Details of the Researcher

PHOTO

Shuji Moriguchi
Section
International Research Institute of Disaster Science
Job title
Professor
Degree

  • 博士（工学） (Gifu University)

Research History 8

  • 2026/12 - Present
    Tohoku University　International Research Institute of Disaster Science　Professor

  • 2013/06 - 2025/11
    Tohoku University　International Research Institute of Disaster Science

  • 2010/06 - 2013/05
    Gifu University

  • 2007/04 - 2010/06
    東京工業大学　日本学術振興会特別研究員PD

  • 2009/04 - 2010/05
    Gifu University

  • 2008/06 - 2009/03
    Stanford University　Visiting scholar

  • 2006/04 - 2007/03
    東京工業大学　原子炉工学研究所　特別研究員

  • 2005/04 - 2006/03
    Gifu University

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Education 3

  • 岐阜大学大学院　工学研究科　生産開発システム工学専攻博士後期課程

    2002/04 - 2005/03

  • 岐阜大学大学院　工学研究科　土木工学専攻博士前期課程

    2000/04 - 2002/03

  • Gifu University

    1996/04 - 2000/03

Committee Memberships 9

  • 仙台市　仙台市宅地保全等審議会委員

    2025/04 - Present

  • 土木学会　応用力学委員会土木分野の数値解析におけるに関するV&Vに関する小委員会委員長

    2024/06 - Present

  • 日本地すべり学会　理事，東北支部支部長

    2023/06 - Present

  • 国土交通省東北地方整備局　東北の砂防を考えるアドバイザー会議委員

    2022/04 - Present

  • 地盤工学会　災害連絡会議地方連絡委員（宮城県）

    2020/06 - Present

  • International Society for Soil Mechanics and Geotechnical Engineering　Technical Committee 105 (Geomechanics from Micro to Macro), Nominated Member

    2020/04 - Present

  • 日本計算工学会　多元災害シミュレーション研究会主査

    2018/04 - Present

  • 地盤工学会東北支部　幹事

    2013/04 - Present

  • 地盤工学会　TC105国内委員会幹事長

    2012/04 - Present

Show all ︎Show first 5

Professional Memberships 5

  • The Japan Landslide Society

    2022/06 - Present

  • 日本自然災害学会

  • 日本計算工学会

  • 土木学会

  • 地盤工学会

Research Interests 3

  • Numeircal simulation

  • Slope disaster

  • Geo-disaster

Research Areas 1

  • Social infrastructure (civil Engineering, architecture, disaster prevention) / Geotechnical engineering /

Awards 3

  1. 地盤工学会東北支部賞（貢献的業績部門）

    2025/04　地盤工学会東北支部

  2. 2017年度日本計算工学会論文集論文賞

    2018/05　日本計算工学会　非ニュートン流体モデルを用いた雪崩の3次元非構造有限要素解析

  3. 地盤工学会賞論文賞

    2006/06　地盤工学会

Papers 196

  1. Rapid City-Scale Earthquake Assessment by Combining Numerical Simulation and Sparse Sensing Peer-reviewed

    Dongyang Tang, Hidekazu Usami, Saneiki Fujita, Reika Nomura, Kenjiro Terada, Susumu Ohno, Jia Guo, Masaaki Sakuraba, Kazuya Nojima, Shuji Moriguchi

    EARTHQUAKE SPECTRA　42　(2)　2026/03/25

    DOI： 10.1002/esp4.70052 　

    ISSN： 8755-2930

    eISSN： 1944-8201

  2. Unified Permeability Modeling for Transitional Darcy/Non-Darcy Flow Based on 3D Pore-Level Numerical Flow Tests Peer-reviewed

    Reika Nomura, Ryota Itto, Shinsuke Takase, Shuji Moriguchi, Kenjiro Terada

    INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS　50　(1)　162-177　2026/01

    DOI： 10.1002/nag.70095 　

    ISSN： 0363-9061

    eISSN： 1096-9853

  3. Quantification of the impact of historical land-use changes on disaster risk using numerical simulations Peer-reviewed

    MORIGUCHI Shuji, YOSHIZAWA Mika, DOLOJAN Nilo, NOMURA Reika, TERADA Kenjiro, SUGAWARA Daisuke, KAWAUCHI Atsushi, EBINA Yuichi, SUZUKI Atsushi, MIZOGUCHI Atsuko, FUJII Yukiyasu, KODAKA Takeshi

    Transactions of the Japan Society for Computational Engineering and Science　2025　(2)　20252003-20252003　2025/12/26

    Publisher: JAPAN SOCIETY FOR COMPUTATIONAL ENGINEERING AND SCIENCE

    DOI： 10.11421/jsces.2025.20252003 　

    eISSN： 1347-8826

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    In disaster-affected areas, the impact of land use changes from the past to the present on disaster risk is often discussed, but most of these observations are qualitative. However, quantitative analysis could provide valuable information for disaster prevention and mitigation. This study aims to analyze the impact of land use changes through a series of heavy rainfall disaster simulations. Past and present models of a real region that experienced an extreme rainfall disaster were prepared, with flooding and landslides represented in the simulations. The results quantitatively demonstrated that, to reduce flood damage effectively, it is essential not only to implement basin maintenance, but also to prioritize safety in residential area selection and to proceed with land development in a careful manner. Finally, the potential advantages and limitations of the proposed approach are discussed.

  4. Influence of the Parameters in Resistance Models for 2D Shallow Water Debris Flow Simulation –A Case Study in Atami City, Japan— Peer-reviewed

    Reika Nomura, Nilo Lemuel Dolojan, Chiho Otsuka, Soma Hidano, Shuji Moriguchi, Takeshi Kodaka, Kenjiro Terada

    Journal of Disaster Research　20　(6)　1062-1079　2025/12/01

    DOI： 10.20965/jdr.2025.p1062 　

    ISSN： 1881-2473

    eISSN： 1883-8030

  5. Large-area slope stability analysis: Performance comparison of three-dimensional limit equilibrium methods Peer-reviewed

    Daichi Sugo, John Y. Choe, Saneiki Fujita, Nilo Lemuel J. Dolojan, Kenta Tozato, Reika Nomura, Kenjiro Terada, Eiji Tominaga, Shoji Iwanaga, Shuji Moriguchi

    Soils and Foundations　65　(6)　101703-101703　2025/12

    DOI： 10.1016/j.sandf.2025.101703 　

    ISSN： 0038-0806

    eISSN： 2524-1788

  6. Rapid prediction of rainfall-induced landslides over a wide area aided by a simulation-based surrogate model Peer-reviewed

    Kenta Tozato, Daichi Sugo, Nilo Lemuel J. Dolojan, Reika Nomura, Kenjiro Terada, Shinsuke Takase, Kenji Kaneko, Shuji Moriguchi

    Computers and Geotechnics　188　107480-107480　2025/12

    DOI： 10.1016/j.compgeo.2025.107480 　

    ISSN： 0266-352X

    eISSN： 1873-7633

  7. Submarine landslide induced tsunami modeling using 3D slope stability analysis Method: The 2024 Noto Peninsula earthquake and tsunami in Toyama Bay, Japan Peer-reviewed

    Muhammad Daffa Al Farizi, Anawat Suppasri, Tsuyoshi Nagasawa, Yukio Mabuchi, Tatsunori Nogami, Hidetoshi Masuda, Daichi Sugo, Shuji Moriguchi, Yoshinori Shigihara, Fumihiko Imamura

    OCEAN ENGINEERING　340　2025/11/30

    DOI： 10.1016/j.oceaneng.2025.122240 　

    ISSN： 0029-8018

    eISSN： 1873-5258

  8. Evaluation of Stiffness and Tensile Strength in Hardened Cement Paste Using Bayesian Updating Peer-reviewed

    Md Samdani Azad, Donghwi Eum, Se-Yun Kim, Shuji Moriguchi, Tong-Seok Han

    INTERNATIONAL JOURNAL OF CONCRETE STRUCTURES AND MATERIALS　19　(1)　2025/11/26

    DOI： 10.1186/s40069-025-00862-5 　

    ISSN： 1976-0485

    eISSN： 2234-1315

  9. An efficient Quantum Approximate Optimization Algorithm with fixed linear ramp schedule for truss structure optimization Peer-reviewed

    Junsen Xiao, Naruethep Sukulthanasorn, Reika Nomura, Shuji Moriguchi, Kenjiro Terada

    Advanced Modeling and Simulation in Engineering Sciences　12　(1)　14-14　2025/06/18

    DOI： 10.1186/s40323-025-00298-2 　

    eISSN： 2213-7467

  10. Integrated multihazard study combining qualitative and quantitative analyses of floods, landslides, and debris flows: A case study on the impacts of Typhoon Yun-Yeung on Iwaki City, Fukushima Peer-reviewed

    Nilo Lemuel J. Dolojan, Takayuki Takahashi, Masakazu Hashimoto, Akihiro Shibayama, Reika Nomura, Kenjiro Terada, Shuji Moriguchi

    International Journal of Disaster Risk Reduction　127　105647-105647　2025/06

    DOI： 10.1016/j.ijdrr.2025.105647 　

    ISSN： 2212-4209

  11. Evaluating the Impact of DEM Parameters on the Angle of Repose Peer-reviewed

    S. Moriguchi, M. Otsubo, A. Oya, A. Kono, M. Taue, H. Saomoto, S. Kajiyama, N. Kikkawa, Y. Nakata

    IOP Conference Series: Earth and Environmental Science　1480　(1)　012034-012034　2025/04/01

    Publisher: IOP Publishing

    DOI： 10.1088/1755-1315/1480/1/012034 　

    ISSN： 1755-1307

    eISSN： 1755-1315

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    Abstract The Discrete Element Method (DEM) is widely utilized to solve engineering problems. However, validating DEM analysis is still challenging except in simple cases. To address this issue, the TC105 Japanese committee conducted the round-robin test using 3D-printed particles for angle of repose experiments. To further develop the project, this study aims to quantify the impact of DEM input parameters. A series of DEM simulations were conducted using different program codes, and the sensitivity analysis was performed through four different methodologies. The results qualitatively indicated that the friction angle between particles had a dominant impact.

  12. A novel design update framework for topology optimization with quantum annealing: Application to truss and continuum structures Peer-reviewed

    Naruethep Sukulthanasorn, Junsen Xiao, Koya Wagatsuma, Reika Nomura, Shuji Moriguchi, Kenjiro Terada

    Computer Methods in Applied Mechanics and Engineering　437　117746-117746　2025/03

    DOI： 10.1016/j.cma.2025.117746 　

    ISSN： 0045-7825

    eISSN： 1879-2138

  13. Radial basis function-based surrogate computational homogenization for elastoplastic composites at finite strain Peer-reviewed

    Akari Nakamura, Yosuke Yamanaka, Reika Nomura, Shuji Moriguchi, Kenjiro Terada

    Computer Methods in Applied Mechanics and Engineering　436　117708-117708　2025/03

    DOI： 10.1016/j.cma.2024.117708 　

    ISSN： 0045-7825

    eISSN： 1879-2138

  14. Speeding up MPM calculations in MPM-FEM hybrid method incorporating inconsistent domain decomposition patterns for solid and fluid phases Peer-reviewed

    Shaoyuan Pan, Soma Hidano, Reika Nomura, Lu Jing, Yohei Miki, Masatoshi Kawai, Shuji Moriguchi, Kengo Nakajima, Kenjiro Terada

    Computational Mechanics　75　(6)　1867-1892　2025/02/11

    DOI： 10.1007/s00466-025-02601-9 　

    ISSN： 0178-7675

    eISSN： 1432-0924

  15. B-spline-based material point method with dynamic load balancing technique for large-scale simulation Peer-reviewed

    Soma Hidano, Shaoyuan Pan, Keina Yoshida, Reika Nomura, Yohei Miki, Masatoshi Kawai, Shuji Moriguchi, Kengo Nakajima, Kenjiro Terada

    Engineering with Computers　41　(3)　1619-1636　2025/01/07

    DOI： 10.1007/s00366-024-02099-4 　

    ISSN： 0177-0667

    eISSN： 1435-5663

  16. Sensitivity Analysis on Critical Combinations of Input Parameters in DEM Granular Flow Analysis Peer-reviewed

    Junsen Xiao, Kenta Tozato, Reika Nomura, Yu Otake, Kenjiro Terada, Shuji Moriguchi

    TC 105 INTERNATIONAL SYMPOSIUM　1480　2025

    DOI： 10.1088/1755-1315/1480/1/012102 　

    ISSN： 1755-1307

  17. EFFECTS OF INERTIAL FORCE TERM ON THE 2D SHALLOW WATER FLOW THROUGH COASTAL FORESTS Peer-reviewed

    ISHIZAWA Shuji, NOMURA Reika, MORIGUCHI Shuji, TERADA Kenjiro

    Japanese Journal of JSCE　81　(15)　n/a　2025

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejj.24-15006 　

    eISSN： 2436-6021

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    This study investigates the influence of the inertial force term in shallow water simulations through a coastal forest. First, we formulate two patterns of 2D shallow water momentum equation which consider trees’ resistance as an external force term consisting of either the drag force or the combination of drag and inertial forces. To obtain the parameters characterizing drag and inertial force, we carry out the 3D numerical flow tests with the 3D tree model. Finally, we conduct several 2D dam break simulations by incorporating the evaluated parameters into the resistance force term. By comparing the wave arrival time and the inundation depth, we could argue that the existence of inertial force has the potential to affect the ultimate evaluation of disaster mitigation performance of trees if they are densely arranged.

  18. Modeling effect of rock shape characteristics on run-out distribution of rockfalls Peer-reviewed

    T. Yoshida, R. Nomura, Y. Tuda, I. Yoshida, K. Terada, S. Moriguchi

    Soils and Foundations　64　(6)　101531-101531　2024/12

    Publisher: Elsevier BV

    DOI： 10.1016/j.sandf.2024.101531 　

    ISSN： 0038-0806

  19. Comparative Performance of Scenario Superposition by Sequential Bayesian Update for Tsunami Risk Evaluation Peer-reviewed

    Nomura Reika, Hirao-Vermare Louise Ayako, Fujita Saneiki, Rim Donsub, Moriguchi Shuji, LeVeque Randall J., Terada Kenjiro

    Journal of Disaster Research　19　(6)　896-911　2024/12/01

    DOI： 10.20965/jdr.2024.p0896 　

    ISSN： 1881-2473

    eISSN： 1883-8030

  20. Scenario Superposition Method for Real‐Time Tsunami Prediction Using a Bayesian Approach Peer-reviewed

    Saneiki Fujita, Reika Nomura, Shuji Moriguchi, Yu Otake, Randall J. LeVeque, Kenjiro Terada

    Journal of Geophysical Research: Oceans　129　(12)　2024/12

    DOI： 10.1029/2024jc021565 　

    ISSN： 2169-9275

    eISSN： 2169-9291

  21. Extended B-spline-based implicit material point method for saturated porous media

    Yuya Yamaguchi, Shuji Moriguchi, Kenjiro Terada

    INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS　48　(16)　4057-4085　2024/11

    DOI： 10.1002/nag.3827 　

    ISSN： 0363-9061

    eISSN： 1096-9853

  22. Surrogate modeling for transient electrochemical potential analysis for SOFC using proper orthogonal decomposition Peer-reviewed

    Masami Sato, Mayu Muramatsu, Kenta Tozato, Shuji Moriguchi, Tatsuya Kawada, Kenjiro Terada

    Solid State Ionics　414　2024/10

    DOI： 10.1016/j.ssi.2024.116642 　

    ISSN： 0167-2738

    eISSN： 1872-7689

  23. Application of factorization machine with quantum annealing to hyperparameter optimization and metamodel-based optimization in granular flow simulations

    Junsen Xiao, Katsuhiro Endo, Mayu Muramatsu, Reika Nomura, Shuji Moriguchi, Kenjiro Terada

    INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS　48　(13)　3432-3451　2024/09

    DOI： 10.1002/nag.3800 　

    ISSN： 0363-9061

    eISSN： 1096-9853

  24. A diffusive‐discrete crack transition scheme for ductile fracture at finite strain Peer-reviewed

    Jike Han, Yuichi Shintaku, Shuji Moriguchi, Kenjiro Terada

    International Journal for Numerical Methods in Engineering　125　(19)　2024/06/27

    Publisher: Wiley

    DOI： 10.1002/nme.7553 　

    ISSN： 0029-5981

    eISSN： 1097-0207

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    Summary This study presents a diffusive‐discrete crack transition scheme for stably conducting ductile fracture simulations within a finite strain framework. In the developed scheme, the crack initiation and propagation processes are determined according to an energy minimization problem based on crack phase‐field theory, and the predicted diffusive path is transformed to a discrete representation using the finite cover method during the staggered iterative scheme. In particular, for stably conducting ductile fracture simulations, three computational techniques, the staggered iterative configuration update technique, the subincremental damage update technique, and the crack opening stabilization technique, are introduced. The first and second techniques can be used regardless of whether discrete cracks are considered, and the third technique is specialized for diffusive‐discrete crack transition schemes. Accordingly, ductile fracture simulations with the developed scheme rarely encounter troublesome problems such as oscillations in the displacement field and severe distortion of finite elements that can lead to divergence of calculations. After the crack phase‐field model for ductile fractures is formulated and discretized, the numerical algorithms for realizing the diffusive‐discrete crack transition while maintaining computational stability are explained. Several representative numerical examples are presented to demonstrate the performance and capabilities of the developed approach.

  25. Diffusive-discrete crack transition without remeshing achieved by extended B-spline-based implicit material point method Peer-reviewed

    Riichi Sugai, Jike Han, Shuji Moriguchi, Kenjiro Terada

    Computer Methods in Applied Mechanics and Engineering　421　2024/03/01

    DOI： 10.1016/j.cma.2024.116771 　

    ISSN： 0045-7825

    eISSN： 1879-2138

  26. Optimization of a Tsunami Gauge Configuration for Pseudo-Super-Resolution of Wave Height Distribution Peer-reviewed

    Saneiki Fujita, Reika Nomura, Shuji Moriguchi, Yu Otake, Shunichi Koshimura, Randall J. LeVeque, Kenjiro Terada

    Earth and Space Science　11　(2)　2024/02

    DOI： 10.1029/2023EA003144 　

    eISSN： 2333-5084

  27. Crack phase-field enhanced finite cover method for dynamic fracture at finite strain Peer-reviewed

    Jike Han, Daigo Hirayama, Yuichi Shintaku, Shuji Moriguchi, Kenjiro Terada

    International Journal for Numerical Methods in Engineering　125　(2)　2024/01/30

    DOI： 10.1002/nme.7371 　

    ISSN： 0029-5981

    eISSN： 1097-0207

  28. On the performance of sequential Bayesian update for database of diverse tsunami scenarios.

    Reika Nomura, Louise A. Hirao Vermare, Saneiki Fujita, Donsub Rim, Shuji Moriguchi, Randall J. LeVeque, Kenjiro Terada

    CoRR　abs/2407.03631　2024

    DOI： 10.48550/arXiv.2407.03631 　

  29. Quantum annealing-based structural optimization with a multiplicative design update.

    Naruethep Sukulthanasorn, Junsen Xiao, Koya Wagatsuma, Shuji Moriguchi, Kenjiro Terada

    CoRR　abs/2406.18833　2024

    DOI： 10.48550/arXiv.2406.18833 　

  30. QAにおけるGaussian on-offエンコーディングの構造解析に対する適用性に関する検討

    遠藤 克浩, 村松 眞由, 野村 怜佳, 森口 周二, 寺田 賢二郎

    計算力学講演会講演論文集　2024.37　OS-1007　2024

    Publisher: 一般社団法人 日本機械学会

    DOI： 10.1299/jsmecmd.2024.37.os-1007 　

    ISSN： 2424-2799

    eISSN： 2424-2799

  31. Sensitivity analysis on critical combinations of input parameters in DEM granular flow analysis

    Junsen Xiao, Kenta Tozato, Reika Nomura, Yu Otake, Kenjiro Terada, Shuji Moriguchi

    Acta Geotechnica　20　(1)　387-412　2024

    DOI： 10.1007/s11440-024-02499-2 　

    ISSN： 1861-1125

    eISSN： 1861-1133

  32. A Study on Digital Model for Decision-Making in Crisis Response Peer-reviewed

    Naoko Kosaka, Shuji Moriguchi, Akihiro Shibayama, Tsuneko Kura, Naoko Shigematsu, Kazuki Okumura, Erick Mas, Makoto Okumura, Shunichi Koshimura, Kenjiro Terada, Akinori Fujino, Hiroshi Matsubara, Masaki Hisada

    Journal of Disaster Research　19　(3)　489-500　2024

    DOI： 10.20965/jdr.2024.p0489 　

    ISSN： 1881-2473

    eISSN： 1883-8030

  33. A numerical simulation method combining gradient damage model and finite cover method for dynamic fracture Peer-reviewed

    Daigo Hirayama, Jike Han, Shuji Moriguchi, Kenjiro Terada

    Transactions of the Japan Society for Computational Engineering and Science　2024　2024

    DOI： 10.11421/jsces.2024.20240001 　

    eISSN： 1347-8826

  34. On the flow conditions requiring detailed geometric modeling for multiscale evaluation of coastal forests Peer-reviewed

    Reika Nomura, Shinsuke Takase, Shuji Moriguchi, Kenjiro Terada

    Advanced Modeling and Simulation in Engineering Sciences　10　(1)　13-13　2023/12

    DOI： 10.1186/s40323-023-00250-2 　

    eISSN： 2213-7467

  35. Quantification of the contribution ratio of relevant input parameters on DEM-based granular flow simulations Peer-reviewed

    Junsen Xiao, Kenta Tozato, Shuji Moriguchi, Yu Otake, Kenjiro Terada

    Soils and Foundations　63　(6)　2023/12

    DOI： 10.1016/j.sandf.2023.101378 　

    ISSN： 0038-0806

  36. Surrogate modeling for the homogenization of elastoplastic composites based on RBF interpolation Peer-reviewed

    Yosuke Yamanaka, Seishiro Matsubara, Norio Hirayama, Shuji Moriguchi, Kenjiro Terada

    Computer Methods in Applied Mechanics and Engineering　415　2023/10/01

    DOI： 10.1016/j.cma.2023.116282 　

    ISSN： 0045-7825

  37. Foreword – Special issue on the 3rd International Symposium on Risk Assessment and Sustainable Stability Design of Slopes – ISRSS-Sendai 2022

    Feng Zhang, Shuji Moriguchi, Kazuhide Sawada, Guanlin Ye

    Soils and Foundations　63　(5)　2023/10

    DOI： 10.1016/j.sandf.2023.101377 　

    ISSN： 0038-0806

  38. Hydrologic-geotechnical modelling of shallow landslide and flood hazards caused by heavy rainfall Peer-reviewed

    Nilo Lemuel J. Dolojan, Shuji Moriguchi, Masakazu Hashimoto, Nguyen Xuan Tinh, Hitoshi Tanaka, Kenjiro Terada

    Engineering Geology　323　107184-107184　2023/09

    DOI： 10.1016/j.enggeo.2023.107184 　

    ISSN： 0013-7952

    eISSN： 1872-6917

  39. Variable passing method for combining 3D MPM-FEM hybrid and 2D shallow water simulations of landslide-induced tsunamis Peer-reviewed

    Shaoyuan Pan, Reika Nomura, Guoming Ling, Shinsuke Takase, Shuji Moriguchi, Kenjiro Terada

    INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS　96　(1)　17-43　2023/08

    DOI： 10.1002/fld.5233 　

    ISSN： 0271-2091

    eISSN： 1097-0363

  40. Free-surface flow simulations with floating objects using lattice Boltzmann method Peer-reviewed

    Seiya Watanabe, Jun Kawahara, Takayuki Aoki, Kenta Sugihara, Shinsuke Takase, Shuji Moriguchi, Hirotada Hashimoto

    Engineering Applications of Computational Fluid Mechanics　17　(1)　2023/05/12

    Publisher: Informa UK Limited

    DOI： 10.1080/19942060.2023.2211143 　

    ISSN： 1994-2060

    eISSN： 1997-003X

  41. A method of fully implicit coupled analyses for thermoset resin subjected to cure based on variationally consistent formulation for finite thermo-viscoelasticity Peer-reviewed

    Yosuke Yamanaka, Seishiro Matsubara, Shuji Moriguchi, Kenjiro Terada

    International Journal of Solids and Structures　268　112161-112161　2023/04

    Publisher: Elsevier BV

    DOI： 10.1016/j.ijsolstr.2023.112161 　

    ISSN： 0020-7683

  42. A method for rockfall risk quantification and optimal arrangement of protection structures along a road Peer-reviewed

    Hasuka Kanno, Shuji Moriguchi, Yuto Tsuda, Ikumasa Yoshida, Shoji Iwanaga, Kenjiro Terada

    Engineering Geology　314　2023/03/05

    DOI： 10.1016/j.enggeo.2023.107004 　

    ISSN： 0013-7952

  43. Extended B‐spline‐based implicit material point method enhanced by F‐bar projection method to suppress pressure oscillation Peer-reviewed

    Riichi Sugai, Jike Han, Yuya Yamaguchi, Shuji Moriguchi, Kenjiro Terada

    International Journal for Numerical Methods in Engineering　124　(11)　2423-2448　2023/02/12

    DOI： 10.1002/nme.7216 　

    ISSN： 0029-5981

    eISSN： 1097-0207

  44. 三次元解析の現状と課題 Peer-reviewed

    森口周二

    地盤工学会誌　71　(2)　1-3　2023/02

  45. Round robin test on angle of repose: DEM simulation results collected from 16 groups around the world Peer-reviewed

    Hidetaka Saomoto, Naotaka Kikkawa, Shuji Moriguchi, Yukio Nakata, Masahide Otsubo, Vasileios Angelidakis, Yi Pik Cheng, Kevin Chew, Gabriele Chiaro, Jérôme Duriez, Sacha Duverger, Joaquín Irazábal González, Mingjing Jiang, Yohei Karasaki, Akiko Kono, Xintong Li, Zhuyuan Lin, Asen Liu, Sadegh Nadimi, Hitoshi Nakase, Daisuke Nishiura, Utsa Rashique, Hiroyuki Shimizu, Kumpei Tsuji, Takashi Watanabe, Xiaomin Xu, Mourad Zeghal

    Soils and Foundations　63　(1)　101272-101272　2023/02

    Publisher: Elsevier BV

    DOI： 10.1016/j.sandf.2023.101272 　

    ISSN： 0038-0806

  46. 広域を対象とした土砂災害の予測・評価技術

    森口周二

    消防防災の科学　151　(151)　25-29　2023/01/31

    Publisher: 三鷹 : 消防防災科学センター

    ISSN： 2432-325X

  47. Surrogate Model-based Multiscale Analysis of Elastoplastic Composites with Nonperiodicity

    Akari Nakamura, Yosuke Yamanaka, Yuichi Shintaku, Norio Hirayama, Shuji Moriguchi, Kenjiro Terada

    Transactions of the Japan Society for Computational Engineering and Science　2023　2023

    DOI： 10.11421/jsces.2023.20230008 　

    eISSN： 1347-8826

  48. River flood in the Osaki Plain triggered by the heavy rain July 2022 in the northern part of the Miyagi Prefecture and its geomorphological background

    Takahashi Takayuki, Hashimoto Masakazu, Moriguchi Shuji

    Proceedings of the General Meeting of the Association of Japanese Geographers　2023a　(104)　14　2023

    Publisher: The Association of Japanese Geographers

    DOI： 10.14866/ajg.2023a.0_14 　

    ISSN： 1345-8329

  49. Gradient damage model for ductile fracture introducing degradation of damage hardening modulus: implementation and experimental investigations Peer-reviewed

    Jike Han, Seishiro Matsubara, Shinnosuke Nishi, Kenji Takada, Mayu Muramatsu, Masaki Omiya, Kensuke Ogawa, Kai Oide, Takaya Kobayashi, Masanobu Murata, Shuji Moriguchi, Kenjiro Terada

    International Journal of Fracture　240　(2)　183-208　2022/12/06

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1007/s10704-022-00681-9 　

    ISSN： 0376-9429

    eISSN： 1573-2673

  50. A numerical study on the effects of particle size distribution on run-out distance of granular flow Peer-reviewed

    D. Watanabe, S. Moriguchi, K. Terada

    Soils and Foundations　62　(6)　101242-101242　2022/12

    Publisher: Elsevier BV

    DOI： 10.1016/j.sandf.2022.101242 　

    ISSN： 0038-0806

  51. A transition scheme from diffusive to discrete crack topologies at finite strain during the course of a staggered iterative procedure Peer-reviewed

    Jike Han, Yuichi Shintaku, Shuji Moriguchi, Kenjiro Terada

    International Journal for Numerical Methods in Engineering　124　(6)　1405-1433　2022/11/21

    Publisher: Wiley

    DOI： 10.1002/nme.7169 　

    ISSN： 0029-5981

    eISSN： 1097-0207

  52. Sequential Bayesian Update to Detect the Most Likely Tsunami Scenario Using Observational Wave Sequences Peer-reviewed

    Reika Nomura, Saneiki Fujita, Joseph M. Galbreath, Yu Otake, Shuji Moriguchi, Shunichi Koshimura, Randall J. LeVeque, Kenjiro Terada

    Journal of Geophysical Research: Oceans　127　(10)　2022/10/05

    Publisher: American Geophysical Union (AGU)

    DOI： 10.1029/2021jc018324 　

    ISSN： 2169-9275

    eISSN： 2169-9291

  53. Crack phase-field model for ductile fracture introducing a degrading fracture toughness: implementation and experimental investigations Peer-reviewed

    Jike Han, Seishiro Matsubara, Shinnosuke Nishi, Kenji Takada, Mayu Muramatsu, Masaki Omiya, Kensuke Ogawa, Kai Oide, Takaya Kobayashi, Masanobu Murata, Shuji Moriguchi, Kenjiro Terada

    preprint　2022/10/01

  54. Variational crack phase-field model for ductile fracture with elastic and plastic damage variables Peer-reviewed

    Jike Han, Seishiro Matsubara, Shuji Moriguchi, Kenjiro Terada

    Computer Methods in Applied Mechanics and Engineering　400　115577-115577　2022/10

    Publisher: Elsevier BV

    DOI： 10.1016/j.cma.2022.115577 　

    ISSN： 0045-7825

  55. Limit equilibrium method-based 3D slope stability analysis for wide area considering influence of rainfall Peer-reviewed

    Kenta Tozato, Nilo Lemuel J. Dolojan, Yoshiya Touge, Shuichi Kure, Shuji Moriguchi, Seiki Kawagoe, So Kazama, Kenjiro Terada

    Engineering Geology　308　106808-106808　2022/10

    DOI： 10.1016/j.enggeo.2022.106808 　

    ISSN： 0013-7952

    eISSN： 1872-6917

  56. Experimental data of 3D printed granular material for verification of discrete element modeling simulation Peer-reviewed

    Yukio Nakata, Shuji Moriguchi, Shintaro Kajiyama, Ryunosuke Kido, Naotaka Kikkawa, Hidetaka Saomoto, Daiki Takano, Yosuke Higo

    Soils and Foundations　62　(4)　101178-101178　2022/08

    Publisher: Elsevier BV

    DOI： 10.1016/j.sandf.2022.101178 　

    ISSN： 0038-0806

  57. Optimal probabilistic placement of facilities using a surrogate model for 3D tsunami simulations Peer-reviewed

    Kenta Tozato, Shuji Moriguchi, Shinsuke Takase, Yu Otake, Michael R. Motley, Anawat Suppasri, Kenjiro Terada

    Natural Hazards and Earth System Sciences　23　(5)　1891-1909　2022/08/01

    Publisher: Copernicus GmbH

    DOI： 10.5194/nhess-2022-208 　

    ISSN： 1561-8633

    eISSN： 1684-9981

  58. Three-dimensional limit equilibrium slope stability analysis on real slope failures caused by heavy rain and earthquake Peer-reviewed

    Saneiki FUJITA, Nilo Lemuel DOLOJAN, Shuji MORIGUCHI, Kenjiro TERADA, Takashi KYOYA

    Japanese Geotechnical Journal　17　(2)　159-169　2022/06/01

    Publisher: The Japanese Geotechnical Society

    DOI： 10.3208/jgs.17.159 　

    eISSN： 1880-6341

  59. Real-time tsunami risk evaluation method by synthetic dynamics and Bayesian update Peer-reviewed

    NOMURA Reika, FUJITA Saneiki, OTAKE Yu, MORIGUCHI Shuji, KOSHIMURA Shunichi, TERADA Kenjiro, HASHIZUME Masahiro

    Transactions of the Japan Society for Computational Engineering and Science　2022　20220003-20220003　2022/05/19

    Publisher: JAPAN SOCIETY FOR COMPUTATIONAL ENGINEERING AND SCIENCE

    DOI： 10.11421/jsces.2022.20220003 　

    eISSN： 1347-8826

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    This study presents a method of real-time tsunami risk evaluation by combined use of proper orthogonal decomposition (POD) and Bayesian update. The validity of the proposed method is demonstrated through the numerical example targeting plausible tsunamis induced by Nankai-Trough events. First, tsunami simulations are carried out for plausible tsunami scenarios determined by various patterns of fault rupture, and the time histories of wave heights are stored at selected synthetic gauge points. Then, POD is applied to the resulting data matrix of the synthetic dynamics (SD) composed of dynamics modes and coefficients, the latter of which represent scenario-specific information. In the real-time risk evaluation phase, the wave sequences of an actual tsunami event are sequentially measured at the synthetic gauge points and used to estimate the corresponding dynamics coefficients of the constructed SD. At the same time, by the application of Bayesian update, the likelihood of each of the dynamics coefficients pre-calculated for the selected tsunami scenarios is evaluated at each time and sequentially updated to detect the most probable scenario. Finally, the pre-calculated tsunami arrival time and inundation depth distribution corresponding to the detected scenario are determined as risk assessment indices seven minutes after the tsunami generation.

  60. Rapid tsunami force prediction by mode-decomposition-based surrogate modeling Peer-reviewed

    Kenta Tozato, Shinsuke Takase, Shuji Moriguchi, Kenjiro Terada, Yu Otake, Yo Fukutani, Kazuya Nojima, Masaaki Sakuraba, Hiromu Yokosu

    Natural Hazards and Earth System Sciences　22　(4)　1267-1285　2022/04/11

    Publisher: Copernicus GmbH

    DOI： 10.5194/nhess-22-1267-2022 　

    eISSN： 1684-9981

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    Abstract. This study presents a framework for rapid tsunami force predictions by the application of mode-decomposition-based surrogate modeling with 2D–3D coupled numerical simulations. A limited number of large-scale numerical analyses are performed for selection scenarios with variations in fault parameters to capture the distribution tendencies of the target risk indicators. Then, the proper orthogonal decomposition (POD) is applied to the analysis results to extract the principal modes that represent the temporal and spatial characteristics of tsunami forces. A surrogate model is then constructed by a linear combination of these modes, whose coefficients are defined as functions of the selected input parameters. A numerical example is presented to demonstrate the applicability of the proposed framework to one of the tsunami-affected areas during the Great East Japan Earthquake of 2011. Combining 2D and 3D versions of the stabilized finite element method, we carry out a series of high-precision numerical analyses with different input parameters to obtain a set of time history data of the tsunami forces acting on buildings and the inundation depths. POD is applied to the data set to construct the surrogate model that is capable of providing the predictions equivalent to the simulation results almost instantaneously. Based on the acceptable accuracy of the obtained results, it was confirmed that the proposed framework is a useful tool for evaluating time-series data of hydrodynamic force acting on buildings.

  61. Submarine landslide source modeling using the 3D slope stability analysis method for the 2018 Palu, Sulawesi, tsunami Peer-reviewed

    Chatuphorn Somphong, Anawat Suppasri, Kwanchai Pakoksung, Tsuyoshi Nagasawa, Yuya Narita, Ryunosuke Tawatari, Shohei Iwai, Yukio Mabuchi, Saneiki Fujita, Shuji Moriguchi, Kenjiro Terada, Cipta Athanasius, Fumihiko Imamura

    Natural Hazards and Earth System Sciences　22　(3)　891-907　2022/03/17

    DOI： 10.5194/nhess-22-891-2022 　

    ISSN： 1561-8633

    eISSN： 1684-9981

  62. QUANTIFICATION OF THE EFFECT OF ROCK SHAPE PROPARTIES ON THE DISTRIBUTION CHARACTERISTICS OF ROCKFALL RUN-OUT Peer-reviewed

    YOSHIDA Taiki, WATANABE Daiki, KANNO Hasuka, MORIGUCHI Shuji, TERADA Kenjiro

    Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)　78　(3)　210-224　2022

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejge.78.3_210 　

    eISSN： 2185-6516

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    This study aims to analyse the relationships between rock shapes and distribution characteristics of rockfall run-out. A series of rockfall simulations is performed using the Discrete Element Method (DEM). 36 rock models with different shapes were defined by changing the geometrical parameters that were aspect ratio, oblateness, and cut ratio. A total of 200 simulations are carried out for each rock model to obtain the distribution of the final run-out position. The sphericity was employed for analysing the contributions of rock shape, and the relation between the sphericity and the distribution characteristics of rockfall run-out was analysed. According to the result, it was found that the effect of rock shapes on distribution characteristics of rockfall run-out can be expressed in a unified manner using two types of sphericity.

  63. Extended B-spline 基底関数を用いた陰的 MPM の有限変形弾塑性問題への適用 Peer-reviewed

    菅井理一, 山口裕矢, 森口周二, 寺田賢二郎

    日本計算工学会論文集　2021　20210022-20210022　2021/12/08

  64. Multiscale evaluation method of the drag effect on shallow water flow through coastal forests based on 3D numerical simulations Peer-reviewed

    Reika Nomura, Shinsuke Takase, Shuji Moriguchi, Kenjiro Terada, Randall J. LeVeque

    International Journal for Numerical Methods in Fluids　94　(1)　32-58　2021/10/11

    Publisher: Wiley

    DOI： 10.1002/fld.5046 　

    ISSN： 0271-2091

    eISSN： 1097-0363

  65. Crack phase-field model equipped with plastic driving force and degrading fracture toughness for ductile fracture simulation Peer-reviewed

    Jike Han, Seishiro Matsubara, Shuji Moriguchi, Michael Kaliske, Kenjiro Terada

    Computational Mechanics　69　(1)　151-175　2021/09/23

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1007/s00466-021-02087-1 　

    ISSN： 0178-7675

    eISSN： 1432-0924

  66. Time‐Dependent Probabilistic Tsunami Inundation Assessment Using Mode Decomposition to Assess Uncertainty for an Earthquake Scenario Peer-reviewed

    Yo Fukutani, Shuji Moriguchi, Kenjiro Terada, Yu Otake

    Journal of Geophysical Research: Oceans　126　(7)　2021/07

    Publisher: American Geophysical Union (AGU)

    DOI： 10.1029/2021jc017250 　

    ISSN： 2169-9275

    eISSN： 2169-9291

  67. Thermo-mechanical coupled incremental variational formulation for thermosetting resins subjected to curing process Peer-reviewed

    Yosuke Yamanaka, Seishiro Matsubara, Risa Saito, Shuji Moriguchi, Kenjiro Terada

    International Journal of Solids and Structures　216　30-42　2021/05/01

    DOI： 10.1016/j.ijsolstr.2021.01.014 　

    ISSN： 0020-7683

  68. Survey report on damage caused by 2019 Typhoon Hagibis in Marumori Town, Miyagi Prefecture, Japan Peer-reviewed

    S. Moriguchi, H. Matsugi, T. Ochiai, S. Yoshikawa, H. Inagaki, S. Ueno, M. Suzuki, Y. Tobita, T. Chida, K. Takahashi, A. Shibayama, M. Hashimoto, T. Kyoya, N. L.J. Dolojan

    Soils and Foundations　61　(2)　586-599　2021/04

    DOI： 10.1016/j.sandf.2021.01.009 　

    ISSN： 0038-0806

  69. Disaster report on geotechnical damage in Miyagi Prefecture, Japan caused by Typhoon Hagibis in 2019 Peer-reviewed

    Motoki Kazama, Yuki Yamakawa, Akira Yamaguchi, Shotaro Yamada, Akiyoshi Kamura, Tomonori Hino, Shuji Moriguchi

    Soils and Foundations　61　(2)　549-565　2021/04

    DOI： 10.1016/j.sandf.2020.12.001 　

    ISSN： 0038-0806

  70. A computational design optimization method for rockfall protection embankments Peer-reviewed

    Hasuka Kanno, Shuji Moriguchi, Shunsuke Hayashi, Kenjiro Terada

    Engineering Geology　284　2021/04

    DOI： 10.1016/j.enggeo.2020.105920 　

    ISSN： 0013-7952

  71. Extended B-spline-based implicit material point method Peer-reviewed

    Yuya Yamaguchi, Shuji Moriguchi, Kenjiro Terada

    International Journal for Numerical Methods in Engineering　122　(7)　1746-1769　2021/04

    DOI： 10.1002/nme.6598 　

    ISSN： 0029-5981

    eISSN： 1097-0207

  72. A decoupling scheme for two-scale finite thermoviscoelasticity with thermal and cure-induced deformations Peer-reviewed

    Risa Saito, Yosuke Yamanaka, Seishiro Matsubara, Tomonaga Okabe, Shuji Moriguchi, Kenjiro Terada

    International Journal for Numerical Methods in Engineering　122　(4)　1133-1166　2021/02/28

    DOI： 10.1002/nme.6575 　

    ISSN： 0029-5981

    eISSN： 1097-0207

  73. Ductile fracture crack phase-field model equipped with a novel degrading fracture toughness Peer-reviewed

    HAN Jike, MURATA Masanobu, MORIGUCHI Shuji, TERADA Kenjiro, MATSUBARA Seishiro, NISHI Shinnosuke, TAKADA Kenji, MURAMATSU Mayu, OMIYA Masaki, OGAWA Kensuke, OIDE Kai, KOBAYASHI Takaya

    Transactions of the Japan Society for Computational Engineering and Science　2021　20210014-20210014　2021

    Publisher: JAPAN SOCIETY FOR COMPUTATIONAL ENGINEERING AND SCIENCE

    DOI： 10.11421/jsces.2021.20210014 　

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    <p>This study aims to enhance the crack phase-field model for ductile fracture by introducing a novel degrading fracture toughness to reflect damage evolution based on the phenomenological justification for the failure mechanism in elastoplastic materials. The free energy consists of elastic, pseudo-plastic and crack components. The governing equations are derived as stationary conditions for the corresponding local and global optimization problems within the continuum thermodynamics framework. Then, we introduce a degrading fracture toughness to reflect the evolution of micro-defects and their coalescences that are caused by both plastic deformation and negative hydrostatic pressure. Equipped with this implement, the proposed crack phase-field model realizes the reduction of both stiffness and fracture toughness to simulate the failure phenomena of elastoplastic materials. Two numerical examples are presented to demonstrate the capability of the proposed model in reproducing typical ductile fracture behaviors.</p>

  74. MPM–FEM hybrid method for granular mass–water interaction problems Peer-reviewed

    Shaoyuan Pan, Yuya Yamaguchi, Anawat Suppasri, Shuji Moriguchi, Kenjiro Terada

    Computational Mechanics　155-173　2021

    DOI： 10.1007/s00466-021-02024-2 　

    ISSN： 0178-7675

    eISSN： 1432-0924

  75. Correction to: Mapping method of rainfall-induced landslide hazards by infiltration and slope stability analysis: A case study in Marumori, Miyagi, Japan, during the October 2019 Typhoon Hagibis (Landslides, (2021), 10.1007/s10346-020-01617-x) Peer-reviewed

    Nilo Lemuel J. Dolojan, Shuji Moriguchi, Masakazu Hashimoto, Kenjiro Terada

    Landslides　18　(6)　2059-2059　2021

    DOI： 10.1007/s10346-021-01642-4 　

    ISSN： 1612-510X

    eISSN： 1612-5118

  76. FE r method with surrogate localization model for hyperelastic composite materials Peer-reviewed

    Ryo Hatano, Seishiro Matsubara, Shuji Moriguchi, Kenjiro Terada, Julien Yvonnet

    Advanced Modeling and Simulation in Engineering Sciences　7　(1)　39-39　2020/12/01

    DOI： 10.1186/s40323-020-00175-0 　

    eISSN： 2213-7467

  77. Suppression of arsenic release from alkaline excavated rock by calcium dissolved from steel slag Peer-reviewed

    Sayuko Hada, Shuji Moriguchi, Yuuzo Akashi, Masahiko Katoh

    Environmental Geochemistry and Health　42　(11)　3983-3993　2020/11/01

    DOI： 10.1007/s10653-020-00657-5 　

    ISSN： 0269-4042

    eISSN： 1573-2983

  78. Probabilistic tsunami hazard assessment with simulation-based response surfaces Peer-reviewed

    T. Kotani, K. Tozato, S. Takase, S. Moriguchi, K. Terada, Y. Fukutani, Y. Otake, K. Nojima, M. Sakuraba, Y. Choe

    Coastal Engineering　160　2020/09

    DOI： 10.1016/j.coastaleng.2020.103719 　

    ISSN： 0378-3839

  79. Preface to the special issue on “Seismic performance-based design for resilient and sustainable slope engineering” Peer-reviewed

    Yu Huang, Jin Sun, Shuji Moriguchi

    Engineering Geology　272　2020/07

    DOI： 10.1016/j.enggeo.2020.105643 　

    ISSN： 0013-7952

  80. Decoupled two-scale viscoelastic analysis of FRP in consideration of dependence of resin properties on degree of cure Peer-reviewed

    Risa Saito, Yuya Yamaguchi, Seishiro Matsubara, Shuji Moriguchi, Yasuko Mihara, Takaya Kobayashi, Kenjiro Terada

    International Journal of Solids and Structures　190　199-215　2020/05/01

    DOI： 10.1016/j.ijsolstr.2019.11.010 　

    ISSN： 0020-7683

  81. Solid–liquid coupled material point method for simulation of ground collapse with fluidization Peer-reviewed

    Yuya Yamaguchi, Shinsuke Takase, Shuji Moriguchi, Kenjiro Terada

    Computational Particle Mechanics　7　(2)　209-223　2020/03/01

    DOI： 10.1007/s40571-019-00249-w 　

    ISSN： 2196-4378

    eISSN： 2196-4386

  82. 数値解析結果の空間モード分解による津波のリスク評価 Peer-reviewed

    外里 健太, 小谷 拓磨, 波多野 僚, 高瀬 慎介, 森口 周二, 寺田 賢二郎, 大竹 雄

    計算工学会論文集　p.20200003　2020/02

  83. OPTIMAL DESIGN OF ROCKFALL PROTECTION STRUCTURES BASED ON RISK ASSESSMENT FOR ROAD

    TSUDA Yuto, SHISHIKURA Terumi, TSUKAMOTO Hiroaki, YOSHIDA Ikumasa, Hasuka KANNO, MORIGUCHI Shuji

    Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))　76　(2)　I_531-I_541　2020

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejam.76.2_i_531 　

    eISSN： 2185-4661

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    This study proposed a methodology for optimal design of protection structures against rockfall based on minimization of the total cost (the construction cost of protection structures + the risk). The risk is defined as the product of the probability of damage due to rockfall and the consequence. The probability of damage was calculated rockfall hazard assessment method based on collision energy. The consequence was evaluated based on human life loss and economic loss due to traffic interruption. It is not practical to determine an optimal placement only from total cost because usually there are some budget constraints. Therefore, the proposed method determinines an optimal placement of protection structure solving optimization problem based on linear pragramming with constaraint, so that it can satisfy a given budget construction cost. We applied the proposed method to the actual slope shape and show examples of optimal placement of rockfall protection structures.

  84. QUANTIFICATION OF PARAMETER CONTRUBUTION IN GRANULAR FLOW SIMULATIONS USING THE DISCRETE ELEMENT METHOD Peer-reviewed

    Shuji MORIGUCHI, Hiroki OKUYAMA, Kenjiro TERADA, Yu OTAKE, Takayuki AOKI

    Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))　76　(2)　I_369-I_377　2020

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejam.76.2_i_369 　

    eISSN： 2185-4661

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    This study aims to quantify the contribution of input parameters in granular flow simulations using DEM. A granular flow simulation with simple condition is performed using DEM under the different combination of the input parameters. Indexes that related to the traveling distance are defined, and surrogate models of the DEM simulation are built with the help of the radial basis function interpolation. The Monte Carlo Simulation is then carried out with quantified contribution rate of the input parameters. According to the results, the basal friction is the most important parameter, but the restitution coefficient strongly contributes characteristic of the front part. It was also found that the spring codfficient and friction angle between elements don’t have strong contribution.

  85. SPATIAL UNCERTAINTY EVALUATION BY MODE DECOMPOSITION OF WATER DEPTH COEFFICIENTS USED FOR TSUNAMI LOADS DESSIGN Peer-reviewed

    Yo FUKUTANI, Shuji MORIGUCHI, Kenjiro TERADA, Yoshinori SHIGIHARA

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)　76　(2)　I_295-I_300　2020

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/kaigan.76.2_i_295 　

    ISSN： 1884-2399

    eISSN： 1883-8944

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    In the evaluation of tsunami loads on various structures, the hydrostatic pressure (water depth coefficient), which is equivalent to three times of the design inundation depth, is basically applied, and its magnification is reduced according to the surrounding conditions. Although there have been many hydraulic model experiments and numerical analyses on tsunami wave pressure and water depth coefficients acting on buildings, there is no quantitative evaluation of the spatial distribution and stochastic variation of it using numerical analysis. In the present study, we evaluated the spatial uncertainty of the water depth coefficient by applying the spatial mode decomposition method using eigenorthogonal decomposition to the tsunami inundation depth due to the the Sagami trough earthquake. As a result, we found that the standard deviation of the water depth coefficient was about 0.6 in some areas and tended to decrease about 0.5 at about 1 km.

  86. Advances of international collaboration on M9 disaster science: scientific session report Peer-reviewed

    Elizabeth Maly, Kenjiro Terada, Randall J. Leveque, Naoko Kuriyama, Daniel B. Abramson, Lan T. Nguyen, Ann Bostrom, Jorge León, Michael Motley, Patricio A. Catalan, Shunichi Koshimura, Shuji Moriguchi, Yuya Yamaguchi, Carrie Garrison-Laney, Anawat Suppasri, Erick Mas

    Journal of Disaster Research　15　(7)　890-899　2020

    DOI： 10.20965/jdr.2020.p0890 　

    ISSN： 1881-2473

    eISSN： 1883-8030

  87. A phase-field ductile fracture model with a variable regularization length parameter Peer-reviewed

    Jike Han, Shinnosuke Nishi, Kenji Takada, Mayu Muramatsu, Masaki Omiya, Kensuke Ogawa, Kai Oide, Takuya Kobayashi, Masanobu Murata, Shuji Moriguchi, Kenjiro Terada

    Transactions of the Japan Society for Computational Engineering and Science　2020　1-15　2020

    DOI： 10.11421/jsces.2020.20200005 　

    eISSN： 1347-8826

  88. Tsunami risk assessment using spatial modes extracted from results of numerical analysis Peer-reviewed

    Kenta Tozato, Takuma Kotani, Ryo Hatano, Shinsuke Takase, Shuji Moriguchi, Kenjiro Terada, Yu Otake

    Transactions of the Japan Society for Computational Engineering and Science　2020　2020

    DOI： 10.11421/jsces.2020.20200003 　

    eISSN： 1347-8826

  89. Incremental variational formulation of time evolution of cure-degree along with viscoelasticity for thermosetting resins Peer-reviewed

    Yosuke Yamanaka, Seishiro Matsubara, Risa Saito, Shuji Moriguchi, Kenjiro Terada

    Transactions of the Japan Society for Computational Engineering and Science　2020　1　2020

    DOI： 10.11421/jsces.2020.20200011 　

    eISSN： 1347-8826

  90. Tsunami hazard and risk assessment for multiple buildings by considering the spatial correlation of wave height using copulas Peer-reviewed

    Yo Fukutani, Shuji Moriguchi, Kenjiro Terada, Takuma Kotani, Yu Otake, Toshikazu Kitano

    Natural Hazards and Earth System Sciences　19　(11)　2619-2634　2019/11/22

    DOI： 10.5194/nhess-19-2619-2019 　

    ISSN： 1561-8633

    eISSN： 1684-9981

  91. SPECIAL ISSUE ON THE HEAVY RAIN EVENT OF JULY 2018

    Norihiro IZUMI, Tatsuhiko UCHIDA, Yoshihisa AKAMATSU, Yoshiharu SUZUKI, Shuji MORIGUCHI, Yasushi OIKAWA, Hiromi SHIRAHATA

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)　75　(1)　138-142　2019

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejhe.75.1_138 　

    eISSN： 2185-467X

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    The heavy rain event of July 2018 had left devastating damages by flood and sediment disaster. The failures of important structures, traffic and infrastructure networks had expanded the damage synergistically in space and time, exposing interdisciplinary issues. One of the most important missions of JSCE is to summarize and disseminate the lessons from the disasters for solving problems in social infrastructure in the future. This special issue includes valuable information obtained in disaster investigations from different disciplinary points of view, aiming to contribute the growth and development of interdisciplinary academic fields of civil engineering.

  92. Numerical simulation of rock slope failure with dynamic frictional contact based on co-rotational technique

    S. Suzuki, K. Takashi, K. Terada, S. Moriguchi, N. Takeuchi

    Rock Dynamics Summit - Proceedings of the 2019 Rock Dynamics Summit, RDS 2019　446-450　2019

    DOI： 10.1201/9780429327933-72 　

  93. Simulation-based optimal design approach for rockfall protection walls

    S. Moriguchi, H. Kanno, K. Terada, T. Kyoya

    Rock Dynamics Summit - Proceedings of the 2019 Rock Dynamics Summit, RDS 2019　481-485　2019

    DOI： 10.1201/9780429327933-78 　

  94. A data-driven micro-macro coupled multiscale analysis for hyperelastic composite materials Peer-reviewed

    Ryo Hatano, Seishiro Matsubara, Shuji Moriguchi, Kenjiro Terada

    Transactions of the Japan Society for Computational Engineering and Science　2019　(0)　1-16　2019

    Publisher: 一般社団法人 日本計算工学会

    DOI： 10.11421/jsces.2019.20190015 　

    eISSN： 1347-8826

  95. Hydrodynamic and debris-damming failure of bridge decks and piers in steady flow

    Kevin Oudenbroek, Nader Naderi, Jeremy D. Bricker, Yuguang Yang, Cor van der Veen, Wim Uijttewaal, Shuji Moriguchi, Sebastiaan N. Jonkman

    Geosciences (Switzerland)　8　(11)　2018/11/09

    DOI： 10.3390/geosciences8110409 　

    eISSN： 2076-3263

  96. Simultaneous control of cadmium release and acidic pH neutralization in excavated sedimentary rock with concurrent oxidation of pyrite using steel slag Peer-reviewed

    Masahiko Katoh, Shuji Moriguchi, Nobuhiro Takagi, Yuuzo Akashi, Takeshi Sato

    Journal of Soils and Sediments　18　(3)　1194-1204　2018/03/01

    Publisher: Springer Verlag

    DOI： 10.1007/s11368-017-1892-0 　

    ISSN： 1439-0108

    eISSN： 1614-7480

  97. A HAZARD MAP BASED ON 3D SNOW AVALANCHE SIMULATION Peer-reviewed

    KITOU Kouhei, KOTANI Takuma, YAMAGUCHI Yuya, TAKASE Shinsuke, MORIGUCHI Shuji, TERADA Kenjiro

    Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))　84　(2)　I_203-I_211　2018/02

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejam.74.i_203 　 10.2208/journalofjsce.24-16111_references_DOI_4qmUNxCoLxDCacXXA1sAZnijoth 　

    eISSN： 2185-4661

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    This study presents a new method which can visually evaluate the spatial distribution of snow avalanche risk against a human body. An empirical formula of the impact force and 3D stabilized FE analysis based on SUPG/PSPG method are efficiently combined to estimate the snow avalanche risk under the low calculation cost. In the 3D FE analysis, flow characteristic of snow is modeled by a Bingham-type fluid model in which the shear strength can be controlled with the internal friction angle and the cohesion. The impact force of snow avalanche against human body is then estimated at every points on the slope surface with the help of calculated flow properties and the empirical formula, and high-risk area is visually defined in the hazard map.

  98. 固液混合流体の直接数値シミュレーションによる巨視的粘性評価 Peer-reviewed

    野村怜佳, 高瀬慎介, 森口周二, 寺田賢二郎

    計算工学会論文集　p.20182007　2018/02

  99. 路線における落石対策工の最適配置評価のための統計モデリング Peer-reviewed

    菅野 蓮華, 森口 周二, 寺田 賢二郎, 林 俊介, 磯部 有作, 岩永 昇二

    応用力学論文集　74　(2)　I_13-I_21　2018/02

  100. Viscosity evaluation of solid-liquid mixture based on direct numerical simulation

    Reika Nomura, Shinsuke Takase, Shuji Moriguchi, Kenjiro Terada

    Transactions of the Japan Society for Computational Engineering and Science　2018　(2)　2018/01/01

    DOI： 10.11421/jsces.2018.20182007 　

    eISSN： 1347-8826

  101. A method of numerical viscosity measurement for solid-liquid mixture Peer-reviewed

    Reika Nomura, Kenjiro Terada, Shinsuke Takase, Shuji Moriguchi

    Lecture Notes in Applied and Computational Mechanics　86　347-363　2018

    Publisher: Springer Verlag

    DOI： 10.1007/978-3-319-65463-8_17 　

    ISSN： 1613-7736

  102. PROBABILISTIC TSUNAMI LOSS ESTIMATION USING RESPONSE-SURFACE METHOD -APPLICATION TO SAGAMI TROUGH EARTHQUAKE- Peer-reviewed

    FUKUTANI Yo, MORIGUCHI Shuji, KOTANI Takuma, TERADA Kenjirou

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)　74　(2)　I-463-I-468　2018

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/kaigan.74.i_463 　

    ISSN： 1884-2399

    eISSN： 1883-8944

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    Various methods such as a logic tree method and a random phase model have been proposed as a probabilistic tsunami hazard evaluation method. However, the calculation load is high because most of the methods require vast numbers of tsunami calculations. In this research, we aimed at evaluating probabilistic tsunami damage of a building using a method to estimate the uncertainty of the tsunami hazard with the Sagami trough earthquake by using the response surface method, which can be evaluated by suppressing the computation load and flexibly incorporating the uncertainty due to the probability distribution.<br> As a result, we confirmed that the expectation of conditional damage of a steel building located on the Sagami Bay coast was estimated to be around 36.9%, and that we can evaluate the earthquake regions contributing to the extreme value of the frequency distribution of the tsunami inudation depth and the conditional excess probability distribution of the loss ratio of the building.

  103. A Tsunami Risk Analysis Considering Correlations Among Coastal Cities Peer-reviewed

    Takuma Kotani, Shuji Moriguchi, Kenjiro Terada, Shinsuke Takase, Yu Otake, Yo Fukutani, Masaaki Sakuraba

    7th Asia Conference on Earthquake Engineering　2018

  104. Characterization of transition from Darcy to non-Darcy flow with 3D pore-level simulations Peer-reviewed

    Ikkoh Tachibana, Shuji Moriguchi, Shinsuke Takase, Kenjiro Terada, Takayuki Aoki, Kohji Kamiya, Takeshi Kodaka

    Soils and Foundations　57　(5)　707-719　2017/10

    DOI： 10.1016/j.sandf.2017.08.003 　

    ISSN： 0038-0806

  105. 混合ガウスモデルを用いた落石危険度の空間的・確率論的評価 Peer-reviewed

    菅野蓮華, 森口周二, 高瀬慎介, 寺田賢二郎, 沢田和秀, 児波昌則

    地盤工学ジャーナル　12　(2)　211-221　2017/06/30

    DOI： 10.3208/jgs.12.211 　

  106. 有限ひずみ損傷モデルを用いた断層の動きに伴う表層地盤変状解析 Peer-reviewed

    大川真里菜, 鈴木峻, 高瀬慎介, 森口周二, 寺田賢二郎, 車谷麻緒

    73　(2)　I_497-I_505　2017/06

  107. A BASIC STUDY OF OPTIMAL DESIGN METHOD FOR ROCKFALL COUNTERMEASURES BASED ON DISCRETE ELEMENT ANALYSIS Peer-reviewed

    KANNO Hasuka, MORIGUCHI Shuji, TAKASE Shinsuke, TERADA Kenjiro

    Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))　73　(2)　i_469-I_476　2017/06

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejam.73.i_469 　 10.2208/jscejj.22-15037_references_DOI_UjiH5dPusAgbIbHZmHlYEQ8wGTI 　

    eISSN： 2185-4661

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    An optimal design method for rockfall countermeasures based on the discrete element method (DEM) is proposed. In this method, firstly, the path and the kinetic energy of rockfalls are simulated using the 3-dimensional DEM. Secondly, optimal design conditions that maximize the performance of rockfall countermeasures are selected based on the DEM results. In order to quantitatively evaluate the performance of countermeasures under a given set of conditions, we introduce a multi-objective function with three separate objectives. A response surface model for the function is determined by using the maximum likelihood estimation, which is based on the data collected from the DEM simulations, and optimal design conditions can be found by maximizing the response surface model. During the course of the explanation, a simple numerical example is presented to demonstrate the capability and the advantage of the proposed method.

  108. FLUID-STRUCTUER INTERACTION ANALYSIS BASED ON FINITE COVER METHOD USING SHALLOW WATER EQUATION Peer-reviewed

    TAKASE Shinsuke, YAMAGUCHI Yuya, MORIGUCHI Shuji, TERADA Kenjiro, NOJIMA Kazuya, SAKURABA Masaaki

    Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))　73　(2)　I_305-I_312　2017/06

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejam.73.i_305 　

    eISSN： 2185-4661

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    This paper presents a numerical method for Fluid-Structure analysis based on Finite Cover Method using shallow water flow. With the help of the two-dimensional finite cover method (FCM) as a tool for interface capturing, the effect of debris is taken into account in fluid-structure interaction (FSI) analyses with the standard shallow water equation. The discontinuous interface boundary between the debris and the fluid is expressed by the Finite Cover Method. The motion of the debris is analyzed by Discrete Element Method (DEM) and the rigid body motion is calculated by using the fluid force action on the debris. For the fundamental resarch, several numerical examples are presented to demonstrate for the proposed fluid-structure interaction method.

  109. Online information as real-time big data about heavy rain disasters and its limitations: Case study of Miyagi prefecture, Japan, during typhoons 17 and 18 in 2015 Peer-reviewed

    Shosuke Sato, Shuichi Kure, Shuji Moriguchi, Keiko Udo, Fumihiko Imamura

    Journal of Disaster Research　12　(2)　335-346　2017/03

    Publisher: Fuji Technology Press

    DOI： 10.20965/jdr.2017.p0335 　

    ISSN： 1881-2473

    eISSN： 1883-8030

  110. Performance of Models for Flash Flood Warning and Hazard Assessment: The 2015 Kali Gandaki Landslide Dam Breach in Nepal Peer-reviewed

    Jeremy D. Bricker, Wolfgang Schwanghart, Basanta Raj Adhikari, Shuji Moriguchi, Volker Roeber, Sanjay Giri

    Mountain Research and Development　37　(1)　5-15　2017/02

    DOI： 10.1659/MRD-JOURNAL-D-16-00043.1 　

    ISSN： 0276-4741

    eISSN： 1994-7151

  111. 個別要素法を用いた大規模土砂流動実験の再現解析 Peer-reviewed

    森口周二, 太田勇真, 高瀬 慎介, 寺田 賢二郎, 阿部慶太, 青木 尊之

    土木学会論文集 A2(応用力学)　72　(2)　449-457　2017/01/29

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejam.72.I_449 　

    eISSN： 2185-4661

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    In order to study suitable calculation conditions for estimating impact force of sediment flow using DEM, a simulation of a large scale sediment flow experiment was performed. By changing element size and element shape, the effects of thease factors were investigated in the simulation. Based on the obtained results, importance of element size and flow chracteristics of the spherical ekement and non-sherical eklement are analyzed. In addition, a flow of the estimation process is proposed, and some points of attention are summarized from the view points of engineering.

  112. EFFECTS OF SPATIAL CHARACTERISTICS OF SLOPE PROPERTIES IN ROCKFALL SIMULATIONS USING DEM Peer-reviewed

    UEHARA Naohide, TACHIBANA Ikkoh, KANNO Hasuka, MORIGUCHI Shuji, TERADA Kenjiro, TAKASE Shinsuke, OTAKE Yu

    Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))　73　(2)　I_507-I_516　2017

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejam.73.I_507 　

    eISSN： 2185-4661

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    This study presents a numerical study on effects of spatial characteristics of slopes in rockfall simulations using DEM. A series of DEM simulations of a model experiment were performed under the different calcu- lation conditions and different spatial characteristics of slope, and effects of these factors were quantified. Based on the obtained results, it was found the accuracy of the mean values of input parameters is much more important than considering the spatial characteristics. However the conclusion is limited to simulated results obtained in this study, hence more detailed verification is necessary.

  113. 近年の東北地方豪雨災害の概要と減災に向けた今後の取り組み

    呉修一, 森口周二, 佐藤翔輔, 有働恵子, 地引泰人

    東北地域災害科学研究　53　199-204　2017

    Publisher:

  114. Three-dimensional nonstructural finite element analysis of snow avalanche using non-Newtonian fluid model Peer-reviewed

    Yuya Yamaguchi, Shinsuke Takase, Shuji Moriguchi, Kenjiro Terada, Kenichi Oda, Isao Kamiishi

    Transactions of the Japan Society for Computational Engineering and Science　2017　20170011　2017

    DOI： 10.11421/jsces.2017.20170011 　

    eISSN： 1347-8826

  115. ウェブからリアルタイムで収集できる大雨情報とその限界に関する事例分析－2015年台風17・18号における宮城県内の場合－

    佐藤翔輔, 呉修一, 森口周二, 有働恵子, 今村文彦

    日本災害情報学会 第18回研究発表大会予稿集　8-9　2016/10

  116. 応答曲面を用いた数値解析援用確率論的津波ハザード評価 Peer-reviewed

    小谷拓磨, 高瀬慎介, 森口周二, 寺田賢二郎, 福谷陽, 大竹雄, 野島和也, 桜庭雅明

    土木学会論文集A2（応用力学）　72　(1)　58-69　2016/09/20

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejam.72.58 　

    eISSN： 2185-4661

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    This study presents a new framework of the probabilistic tsunami hazard evaluation which enables us to use numerical simulation effectively. The basic idea of the framework had been proposed for the reliability analysis of geostructures, and the key issue of the framework is use of the response surface which obtained from the results of numerical simulations. In this study, the response surface of the tsunami height is obtained from the results of the tsunami simulation. In addition, uncertainties related to tsunami simulations are quantified. By using the framework, we can create an environment in which the Monte Carlo Simulation can be performed based on highly-developed numerical simulations. The proposed framework is finally applied to the probabilistic evaluation of the tsunami that was induced by the great east Japan earthquake. The probability density distributions of tsunami height at Sendai, Ishinomaki, and Kamaishi were evaluated with consideration of uncertainties of some fault parameters and a modeling error of the numerical simulation. The obtained results indicate that the framework is effective for the probabilistic tsunami hazard evaluation.

  117. 2D–3D hybrid stabilized finite element method for tsunami runup simulations Peer-reviewed

    S. Takase, S. Moriguchi, K. Terada, J. Kato, T. Kyoya, K. Kashiyama, T. Kotani

    Computational Mechanics　58　(3)　411-422　2016/09/01

    DOI： 10.1007/s00466-016-1300-4 　

    ISSN： 0178-7675

    eISSN： 1432-0924

  118. 高炉水砕スラグによる黄鉄鉱を含む掘削土砂の酸性pH中和とカドミウム溶出抑制 Peer-reviewed

    加藤雅彦, 森口周二, 沢田和秀, 高木信浩, 赤司有三, 佐藤健

    土木学会論文集C（地圏工学）　72　(2)　179-189　2016/06/20

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejge.72.179 　

    eISSN： 2185-6516

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    The aim of this study was to elucidate that how granulated blast-furnace slag can suppress cadmium release and neutralize acid pH in excavated soil in which pyrite is being oxidizing. In the soil without granulated blast-furnace slag, soil pH decreased with the increase in incubation time, while the amount of cadmium release increased. The addition of granulated blast-furnace slag at rates of 7.5wt% and 25wt% led the amounts of cadmium release less than 0.05 mg/kg during 90 days incubation, and kept soil pH at neutral and alkaline ranges, respectively. The addition of granulated blast-furnace slag did not cause the change of pyrite oxidation reaction. The unconfined compressive strength of soil with granulated blast-furnace slag was not significantly different from that of soil without granulated blast-furnace slag. Over 90% of cadmium removed in solution by granulated blast-furnace slag under neutral pH range was not dissolved at neutral to alkali pH ranges. These results suggest that the granulated blast-furnace slag is useful material to reuse excavated soil containing pyrite.

  119. Evaluation of probable maximum hydrodynamic force of flood inundation at the Shibui River in September 2015 Peer-reviewed

    Shuichi Kure, Akihiro Hayashi, Shuji Moriguchi, Takahiro Horiai, Hitoshi Tanaka

    Advances in River Engineering　22　297-302　2016/06

  120. 防潮林の減災特性評価を目的としたマルチスケール数値実験 Peer-reviewed

    野村怜佳, 高瀬慎介, 寺田賢二郎, 森口周二

    土木学会論文集A2（応用力学）　71　(2)　I_193-I_201　2016/02

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejam.71.I_193 　

    eISSN： 2185-4661

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    We propose a method of multiscale numerical experiments for evaluating disaster-reductoin characteristics of tide-protection forest against tsunami energy. To conduct the experiments in a hierarchical way, a tide-protection forest is stratified into three spatial scales; the branch-scale is the smallest, the forest-scale is the largest and the tree-scale is intermediate. Tide-Protection Forest is assumed to be porous media and we identify its porous term as reduction characteristics. With the help of the stabilized finite element method, several cases of lower-scale analyses are carried out with different initial and boundary conditions to construct a response surface of the overall resistances at the upper-scale. Thus, with this information about the porous medium's characteristics, a whole costal region can be a analysis target with relatively low computational cost to make a risk assessment for structures behind the forest.

  121. 構造物の破壊を考慮した有限被覆法に基づく構造流体連成解析 Peer-reviewed

    高瀬慎介, 森口周二, 寺田賢二郎, 小山直輝, 金子賢治, 車谷麻緒, 加藤準治, 京谷孝史

    土木学会論文集A2（応用力学）　71　(2)　I_203-I_212　2016/02

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejam.71.I_203 　

    ISSN： 2185-4661

    eISSN： 2185-4661

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    This paper presents stabilized finite cover based fluid-structure interaction analysis including fracture of structure. The fracture of structure and the contact of structure uses the discrete element method using Cohesive model. The stabilized method based on SUPG/PSPG methods are employed to solve the incompressible Navier-Stokes equation. Since the physical domain is defined independently of the mathematical domain in the finite cover method, the physical boundaries of the structure are represented explicitly in a spatially fixed mesh so that the continuity condition can be imposed directly on the actual interface within the framework of Eulerian approach, and the continuity conditions of velocity and stress vectors at the interface are imposed with the penalty method. Several numerical examples are presented to demonstrate the validity and efficiency of the proposed fluid-structure interaction method.

  122. 個別要素法を用いた乾燥砂の流動解析における粒子のサイズと形状の影響 Peer-reviewed

    森口周二, 蛭間雄大, 高瀬慎介, 寺田賢二郎

    土木学会論文集A2（応用力学）　71　(2)　I_587-I_594　2016/02

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejam.71.I_587 　

    ISSN： 2185-4661

    eISSN： 2185-4661

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    In order to investigate effects of particle size and particle shape in DEM simulations, a series of simulations of a model test using dry sand were carried out. By analyzing the simulated results, following findings were obtained. Non-spherical particles can describe flow behavior of sand much better than spherical particles, and it is possible to describe the flow behavior even if some bigger non-spherical particles are used in the simulation. It is also found that considering particle shape is important to describe the flow behavior but degree of the shape is not sensitive factor.

  123. 2015 年 9 月東北豪雨による渋井川洪水氾濫の特徴 Peer-reviewed

    呉修一, 森口周二, 堀合孝博, 小森大輔, 風間聡, 田中仁

    日本自然災害科学　35　(2)　87-103　2016

    ISSN： 0286-6021

  124. 個別要素法による落石の確率論的危険度評価 Peer-reviewed

    森口周二, 大竹雄, 高瀬慎介, 寺田賢二郎, 小坂祐司, 堀内克, 沢田和秀, 八嶋厚

    地盤工学ジャーナル　10　(4)　503-515　2015/12/31

    Publisher: The Japanese Geotechnical Society

    DOI： 10.3208/jgs.10.503 　

    eISSN： 1880-6341

  125. 平成27年9月関東・東北豪雨による東北地方の被害状況 Peer-reviewed

    森口周二, 金鍾官, 呉修一, Bricker D. Jeremy, 山田知寛, 堀合孝博

    基礎工　43　(12)　94-97　2015/11/28

    Publisher:

    ISSN： 0285-5356

  126. SPH-based numerical simulation of catastrophic debris flows after the 2008 Wenchuan earthquake Peer-reviewed

    Yu Huang, Hualin Cheng, Zili Dai, Qiang Xu, Fang Liu, Kazuhide Sawada, Shuji Moriguchi, Atsushi Yashima

    Bulletin of Engineering Geology and the Environment　74　(4)　1137-1151　2015/11/01

    DOI： 10.1007/s10064-014-0705-6 　

    ISSN： 1435-9529

    eISSN： 1435-9537

  127. Euler型流体解析手法を用いた流動解析 Peer-reviewed

    森口周二

    新砂防　68　(3)　39-42　2015/09

    Publisher: Japan Society of Erosion Control Engineering

    DOI： 10.11475/sabo.68.3_39 　

    ISSN： 0286-8385

    eISSN： 2187-4654

  128. InSAR-derived digital elevation models for terrain change analysis of earthquake-triggered flow-like landslides based on ALOS/PALSAR imagery Peer-reviewed

    Yu Huang, Miao Yu, Qiang Xu, Kazuhide Sawada, Shuji Moriguchi, Atsushi Yashima, Chengwei Liu, Long Xue

    Environmental Earth Sciences　73　(11)　7661-7668　2015/06/22

    DOI： 10.1007/s12665-014-3939-5 　

    ISSN： 1866-6280

    eISSN： 1866-6299

  129. 地盤工学のための個別要素法 Peer-reviewed

    森口周二, 前田健一, 松島亘志, 中田幸男, 小山倫史

    地盤工学会誌　63　(5)　53-60　2015/05

    Publisher:

    ISSN： 1882-7276

  130. Slope stability analysis using smoothed particle hydrodynamics (SPH) method Peer-reviewed

    Hideto Nonoyama, Shuji Moriguchi, Kazuhide Sawada, Atsushi Yashima

    Soils and Foundations　55　(2)　458-470　2015/04

    DOI： 10.1016/j.sandf.2015.02.019 　

    ISSN： 0038-0806

  131. フェーズフィールド法によるミクロ構造トポロジー最適化の基礎的研究 Peer-reviewed

    加藤準治, 加茂純宜, 高瀬慎介, 森口周二, 車谷麻緒, 寺田賢二郎, 京谷孝史

    土木学会論文集A2（応用力学）　70　(2)　I_173-I_183　2015/02

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejam.70.I_173 　

    ISSN： 2185-4661

    eISSN： 2185-4661

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    It is well known that the mechanical behavior of material mainly depends on the geometric properties of the microstructure, such as material distribution, shape or size of the material. It is said that it will be possible to maximize the mechanical performance of a macro-structure, if 'types or kinds of materials to be mixed or the combinations thereof' are optimized and 'the geometric properties of micro-structure' are optimized. For this reason, the authors have developed topology optimization of microstructure using the general finite element method as a numerical approach. However, the general finite element mesh is not necessary appropriate to express the complicated real material distribution of microstructure and furthermore depends considerably on the initial value of some parameters. Thus, the present study applies a new approach, the phase-field method, to express the complicated topology of microstructure and introduces the formulation to maximize the stiffness of the microstructure with a prescribed material volume under linear elastic regime. For the fundamental research, we firstly start from investigation of the initial value dependency of the present method on the final optimization solution by making use of a series of numerical examples.

  132. 安定化有限要素法を用いた2D-3Dハイブリット手法による津波解析 Peer-reviewed

    高瀬慎介, 加藤準治, 森口周二, 寺田賢二郎, 京谷孝史, 野島和也, 桜庭雅明, 樫山和男

    土木学会論文集A2（応用力学）　70　(2)　I_307-I_315　2015/02

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejam.70.I_307 　

    ISSN： 2185-4661

    eISSN： 2185-4661

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    This paper presents a 2D-3D hybrid stabilized finite element method that enables us to analyze both tsunami offshore propagation and runup in urban areas with high accuracy and relatively low computational costs. The shallow water equations are employed for 2D simulation of the offshore flow in a global oceanic area, while the incompressible Navier-Stokes equations are used to analyze 3D flow behavior in a local urban area. The SUPG method is commonly applied to stabilize both the 2D and 3D FE discretized equations, and the VOF method is used to capture the 3D free-surface flow. Meshes for 2D and 3D simulations are generated independently of each other and the method of multiple-point constraint is applied to impose the continuity conditions of flow velocities and pressures at the interface between the 2D and 3D meshes of different topologies. Several numerical examples are presented to demonstrate the performance and efficiency of the proposed hybrid method.

  133. Two-scale assessment of tensile and compressive strengths of heterogeneous rock mass Peer-reviewed

    K. Terada, T. Kyoya, T. Ishida, J. Kato, S. Moriguchi, S. Takase, S. Koumura

    Computer Methods and Recent Advances in Geomechanics - Proceedings of the 14th Int. Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014　1459-1464　2015

    DOI： 10.1201/b17435-257 　

  134. Effects of grain size and grain shape in granular flow simulations Peer-reviewed

    S. Moriguchi, K. Terada, J. Kato, S. Takase, T. Kyoya

    Computer Methods and Recent Advances in Geomechanics - Proceedings of the 14th Int. Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014　1453-1458　2015

    DOI： 10.1201/b17435-256 　

  135. A study on a shape effect in rockfall simulation using DEM Peer-reviewed

    S. Moriguchi, I. Tachibana, K. Terada, S. Takase, T. Kyoya, J. Kato, S. Sawada, A. Yashima

    Geomechanics from Micro to Macro - Proceedings of the TC105 ISSMGE International Symposium on Geomechanics from Micro to Macro, IS-Cambridge 2014　1　213-218　2015

    DOI： 10.1201/b17395-37 　

  136. 個別要素法の適用例 －斜面災害シミュレーションと粒子流体連成解析－ Peer-reviewed

    森口周二

    地盤工学会誌　62　(11)　22-25　2014/11

    Publisher:

    ISSN： 1882-7276

  137. An analysis of fatigue crack propagation in pollycrystalline metals using cohesive zone model with damage variable Peer-reviewed

    新宅 勇一, 村松 眞由, 堤 成一郎, 寺田賢二郎, 京谷 孝史, 加藤 準治, 森口 周二

    計算工学会論文集　20140014　2014/10/10

    DOI： 10.11421/jsces.2014.20140014 　

  138. Numerical evaluation of tsunami impact force acted on a bridge girder during tsunami by using a particle method Peer-reviewed

    Shoichi Tanabe, Mitsuteru Asai, Kenjiro Terada, Kazuo Kashiyama, Shuji Moriguchi, Mao Kurumatani

    11th World Congress on Computational Mechanics, WCCM 2014, 5th European Conference on Computational Mechanics, ECCM 2014 and 6th European Conference on Computational Fluid Dynamics, ECFD 2014　4066-4076　2014/07/01

  139. A Method for Two-Scale Analysis for Crack Propagation in Polycrystalline Metals

    Yuichi Shintaku, Kenjiro Terada, Junji Kato, Takashi Kyoya, Shuji Moriguchi, Shinsuke Takase, Seiichiro Tsutsumi

    Proc. COMPSAFE 2014　125-128　2014/04

  140. Two-scale analysis of tensile and compressive strengths of alternate layers of inclined rock masses

    T. Kyoya, T. Ishida, K. Terada, J. Kato, S. Moriguchi, S. Takase

    ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014　429-437　2014

    Publisher: International Society for Rock Mechanics

  141. 2013年8月秋田・岩手豪雨災害の特徴

    呉修一, 久利美和, 安倍祥, Carine Yi, 森口周二, 有働恵子, 真野明

    東北地域災害科学研究　50　81-86　2014

  142. Rockfall risk management based on survey data of real slopes Peer-reviewed

    S. Moriguchi, Y. Otake, M. Iwata, Y. Honjo, A. Takagi, F. Kurauchi, T. Hara, K. Sawada, A. Yashima, N. Asano

    Geotechnical Safety and Risk IV - Proceedings of the 4th International Symposium on Geotechnical Safety and Risk, ISGSR 2013　499-504　2014

  143. Quantitative relationship between shape representation quality and calculation accuracy Peer-reviewed

    TACHIBANA Ikkoh, MORIGUCHI Shuji, TERADA Kenjiro, TAKASE Shinsuke, KYOYA Takashi, KATO Jyunji

    Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))　70　(2)　I_519-I_530　2014

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejam.70.I_519 　

    ISSN： 2185-4661

    eISSN： 2185-4661

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    In this study, the effect of shape representation in rockfall simulations using DEM was investigated. A model test and it's simulation were performed. In the simulation, differnt numerical models were prepared by changing shape representation to figure out a quantitative relationship between shape representation and calculation accuracy. Every simulations were done in the same condition as experiment, except the shape representation quality of calculation models. Two non-dimensional indexes, namely ESR and OR, were defined to enable quantification of the shape representation quality. Eventually, the relationship between the shape representation quality and the accuracy of DEM simulation were found through comparison of simulated data with experiment. Based on the results obtained in this study, the framework to enable quantitative design of calculation accuracy by controlling shape representation quality was proposed.

  144. Future evolution of slope stability analysis created by SPH method

    H. Nonoyama, A. Yashima, S. Moriguchi

    18th International Conference on Soil Mechanics and Geotechnical Engineering: Challenges and Innovations in Geotechnics, ICSMGE 2013　3　2229-2232　2013

  145. Large Deformation Analysis for Costal Geo-Disasters Using Continuum and Discrete Modeling Invited Peer-reviewed

    A. Yashima, S. Moriguchi, R. Uzuoka, H. Nonoyama, K. Sawada

    Springer Geology　13-29　2013

    DOI： 10.1007/978-3-642-31671-5_2 　

    ISSN： 2197-9545

    eISSN： 2197-9553

  146. Landslide-susceptibility analysis using light detection and ranging-derived digital elevation models and logistic regression models: A case study in Mizunami City, Japan Peer-reviewed

    Liang Jie Wang, Kazuhide Sawada, Shuji Moriguchi

    Journal of Applied Remote Sensing　7　(1)　ID: 073561　2013/01

    DOI： 10.1117/1.JRS.7.073561 　

    ISSN： 1931-3195

    eISSN： 1931-3195

  147. A Risk Management Scheme of Rockfall Accidents in Northern Gifu Prefecture Japan Peer-reviewed

    Hara T, Honjo Y, Takagi A, Kurauchi F, Moriguchi S

    Proc. of Fifth Asian-Pacific Symposium on Structural Reliability and its Application　506-511　2012/05

    Publisher: Asian-Pacific Symposium onStructuralReliability and its Application

  148. SPH法による実大規模斜面掘削実験の二次元再現解析 Peer-reviewed

    野々山栄人, 沢田和秀, 森口周二, 八嶋厚, 伊藤和也

    地盤工学ジャーナル　7　(4)　543-555　2012

    Publisher: The Japanese Geotechnical Society

    DOI： 10.3208/jgs.7.543 　

    eISSN： 1880-6341

  149. 岐阜県飛騨圏域を対象とした道路斜面のリスクマネジメント：落石災害を対象として Peer-reviewed

    髙木朗義, 本城勇介, 倉内文孝, 浅野憲雄, 原隆史, 沢田和秀, 森口周二, 北浦康嗣, 八嶋厚

    土木学会論文集C　68　(2)　109-122　2012

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejcm.68.109 　

    ISSN： 2185-6605

    eISSN： 2185-6605

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    Gifu University research group has studied on a comprehensive risk-management method for infrastructures. As a first step, this study presents a prototype of the risk-management system of rockfall countermeasures. In the prototype system, Hida area located in Gifu prefecture was selected as a target area. There are more than 3000 slopes in the target area. Value of the risk at each slope was estimated by multiplying the obtained probability and the economic loss. In the evaluation process of rockfall provability, a relative probability was calculated using results of a slope observation based on the logistic regression analysis. Then, the absolute probability of the rockfall was calculated using history data of rockfall occurrence. In a evaluation process of the economic loss, the physical loss, the human loss, the circumvention loss, the emergency medical service loss and the isolated colony loss were taken into consideration. It was confirmed the results obtained in this study are in good agreement with the reality. It is also found the obtained results are useful information to make decision of the rockfall risk-management.

  150. Risk Management of Infrastructures on Road Network in Hida Area Peer-reviewed

    Shuji Moriguchi, Yu Otake, Maiko Iwata, Akiyoshi Takagi, Fumitaka Kurauchi, Yusuke Honjo

    Journal of Society for Social Management Systems　SMS12-7979　2012

  151. A study on a model error of DEM

    Moriguchi S, Nagayama T, Sawada K, Yashima A

    Proc. of 6th International Workshop on New Frontiers in Computational Geotechnics　13-29　2012

  152. A simulation of a real snow avalanche

    Sawada K, Moriguchi S, Yashima A

    Proc. of 6th International Workshop on New Frontiers in Computational Geotechnics　49-52　2012

  153. Landslide susceptibility mapping by using logistic regression model with neighborhood analysis: A case study in Mizunami city Peer-reviewed

    Liangjie Wang, Kazuhide Sawada, Shuji Moriguchi

    International Journal of GEOMATE　1　(2)　99-104　2011/12

    DOI： 10.21660/2011.2.2c 　

    ISSN： 2186-2982

    eISSN： 2186-2990

  154. Simulation of a snow avalanche model test using computational fluid dynamics Peer-reviewed

    Kenichi Oda, Shuji Moriguchi, Isao Kamiishi, Atsushi Yashima, Kazuhide Sawada, Atsushi Sato

    Annals of Glaciology　52　(58)　57-64　2011/08

    DOI： 10.3189/172756411797252284 　

    ISSN： 0260-3055

  155. CIP-based numerical simulation of Snow Avalanche Peer-reviewed

    K. Oda, A. Yashima, K. Sawada, S. Moriguchi, A. Sato, I. Kamiishi

    Springer Series in Geomechanics and Geoengineering　5　291-306　2011

    DOI： 10.1007/978-3-642-18284-6_16 　

    ISSN： 1866-8755

    eISSN： 1866-8763

  156. Discrete and continuum modeling of sand flow experiment Peer-reviewed

    Shuji Moriguchi, Ronaldo I. Borja, Atsushi Yashima, Kazuhide Sawada, Kenichi Oda

    Geomechanics and Geotechnics: From Micro to Macro - Proceedings of the International Symposium on Geomechanics and Geotechnics: From Micro to Macro, IS-Shanghai 2010　1　531-536　2011

  157. 岐阜県飛騨圏域を対象とした道路斜面危険度評価 Peer-reviewed

    本城勇介, 町田裕樹, 森口周二, 原隆史, 沢田和秀, 八嶋厚

    土木学会論文集C　67　(3)　299-309　2011

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejge.67.299 　

    ISSN： 2185-6516

    eISSN： 2185-6516

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    The road slope hazard, which is the occurrence rate of rock falls along the major road, in Hida region, consists of Takayama, Furukawa and Gero areas, is evaluated in this paper. This rock fall rate is estimated in two folds. First, the relative rate of lock falls is estimated by the Logit regression analysis based on the inventory data of slops along the major roads in the region which includes about 3000 slopes. The inventory data include topological, geological and geotechnical characteristics of each slope evaluated by the experts in 1996. The slopes are also classified into three categories by the experts as "measures required', "continuous observation" and "no measures required". Based on this classification, the logit regression analyses are carried out to rank the hazard of the slopes by their attributed characteristics as the explanatory variables. Once relative rate of lock falls are estimated for each slope, this rate is calibrated to the absolute rate by using the actual rock fall event records between 2004 and 2008. By these two folds estimation procedure, the absolute rate of rock fall for each slope along the roads are finally esti-mated. This study is a part of the infrastructure asset management strategy decision making program based on risk, and the information gained in this study is combined with other evaluation data for damage to propose the strategy for repair and maintenance plan of the road slopes in this region.

  158. Level Ⅲ reliability based design employing numerical analysis: Application of RBD to DEM Peer-reviewed

    Moriguchi S, Otake Y, Honjo Y, Hara T

    Proc. of 3rd International Symposium on Geotechnical Safety and Risk　369-375　2011

  159. Level III Reliability Based Design employing Numerical Analysis - Application of RBD to FEM - Peer-reviewed

    Y. Otake, Y. Honjo, T. Hara, S. Moriguchi

    Proc. of 3rd International Symposium on Geotechnical Safety and Risk　359-367　2011

  160. Application of reliability based design (RBD) to Eurocode 7 Peer-reviewed

    T. Hara, Y. Honjo, Y. Otake, S. Moriguchi

    Proc. of 3rd International Symposium on Geotechnical Safety and Risk　489-496　2011

  161. Performance of the SPH method for deformation analyses of geomaterials Peer-reviewed

    H. Nonoyama, A. Yashima, K. Sawada, S. Moriguchi

    Springer Series in Geomechanics and Geoengineering　5　275-290　2011

    DOI： 10.1007/978-3-642-18284-6_15 　

    ISSN： 1866-8755

    eISSN： 1866-8763

  162. Road slopes risk assessment of the northern part of Gifu Prefecture, Japan

    Yusuke Honjo, Yu Otake, Shuzi Moriguchi, Takashi Hara

    Geotechnical Special Publication　(224 GSP)　988-995　2011

    DOI： 10.1061/41183(418)107 　

    ISSN： 0895-0563

  163. 数値解析技術--粒状体 Invited Peer-reviewed

    58　(1)　68-70　2010/01/15

    Publisher:

    ISSN： 1882-7276

  164. Permeability simulation of geomaterial using microscopic modeling Peer-reviewed

    Moriguchi S, Sawada K

    Proc. of 5th International Workshop on New frontiers in computational Geotechnics　87-92　2010

  165. Estimating the impact force generated by granular flow on a rigid obstruction Peer-reviewed

    Shuji Moriguchi, Ronaldo I. Borja, Atsushi Yashima, Kazuhide Sawada

    Acta Geotechnica　4　(1)　57-71　2009/03

    DOI： 10.1007/s11440-009-0084-5 　

    ISSN： 1861-1125

    eISSN： 1861-1133

  166. ボーリングコアから得られるデータを利用した岩盤斜面のスクリーニング手法の提案 Peer-reviewed

    小嶋正樹, 鷲見武富, 山口誠, 八嶋厚, 沢田和秀, 森口周二

    地盤工学ジャーナル　4　(1)　47-57　2009

    Publisher: The Japanese Geotechnical Society

    DOI： 10.3208/jgs.4.47 　

    eISSN： 1880-6341

  167. Impact force of flowing sediments on a rigid obstruction Peer-reviewed

    Moriguchi S, Borja R. I, Yashima A, Sawada K

    Proc. of the 4th international young geotechnical engineers conference　127-130　2009

  168. 自然共生型補強土河川護岸工法の開発 Peer-reviewed

    沢田和秀, 八嶋厚, 森口周二, 前田英史, 横田善弘, 西村淳, 松本七保子, 間昭徳, 黄雨

    土木学会論文集C　64　(3)　440-455　2008

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejc.64.440 　

    eISSN： 1880-604X

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    In recent years, there has been a development of new construction methods to satisfy the river environmental conservation. In this study, a new method called reinforced river dike using geotextile is proposed as a new application of soil reinforcement technique. By using this method, it is possible to reduce the construction period and cost and to use vegetation on the slope. A real-scale field construction and field monitoring, full-scale destruction experiment, model experiment and numerical simulations have been conducted to establish design and construction methods for the proposed reinforced river dike. A manual with respect to design and construction is proposed based on these studies. In this paper, the design manual is reported.

  169. 斜面崩壊土砂の挙動予測解析へのSPH法の適用 Peer-reviewed

    沢田和秀, 野々山栄人, 八嶋厚, 森口周二

    混相流　22　(4)　339-347　2008

    Publisher:

    ISSN： 0914-2843

  170. Direct numerical simulation of geomaterial

    Moriguchi S, Aoki T

    Proc. of 4th International Workshop on New Frontiers in Computational Geomechanics　47-52　2008

  171. すべり・落下・転倒を対象としたきれつ性岩盤斜面の簡易安定性評価手法 Peer-reviewed

    鷲見武富, 八嶋厚, 沢田和秀, 森口周二, 小嶋正樹

    土木学会論文集C　63　(1)　188-206　2007

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejc.63.188 　

    eISSN： 1880-604X

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    To manage and treat huge number of roadside slopes, simple evaluation method of slope stability is required. In this paper, a method for evaluation of discontinuous rock slope is proposed. Main features of this method are as follows; 1)stability of triangular pyramid and wedge shaped blocks can be evaluated; 2)three modes of failure, i.e. rockslide , rockfall and toppling are taken into account; 3)stability analysis is based on limit equilibrium theory; 4)friction angle, cohesion and tensile strength of joints are taken into account; 5)pore-water pressure and seismic force can be applied to the block; 6)conditions of stability of blocks are evaluated with simplified vector formulas.

  172. Fluid dynamics based numerical analysis for estimating earth pressure Peer-reviewed

    Moriguchi S, Goshima M, Sawada K

    Proc. of 13th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering　1081-1084　2007

  173. Numerical prediction of impact force of geomaterial flow against retaining structure using CIP method Peer-reviewed

    S. Moriguchi, A. Yashima, K. Sawada, M. Ito, S. Hadush, S. Inoue

    BIFURCATIONS, INSTABILITIES, DEGRADATION IN GEOMECHANICS　381-402　2007

  174. Numerical assessment of the effect of reinforcement on the performance of reinforced soil dikes Peer-reviewed

    Yu Huang, Kazuhide Sawada, Shuji Moriguchi, Atsushi Yashima, Feng Zhang

    Geotextiles and Geomembranes　24　(3)　169-174　2006/06

    DOI： 10.1016/j.geotexmem.2005.11.005 　

    ISSN： 0266-1144

  175. A computational method for the bearing capacity of a foundation using a fluid model Peer-reviewed

    S. Hadush, A. Yashima, S. Moriguchi, K. Sawada

    Computational Methods, Pts 1 and 2　275-279　2006

  176. DECISION OF COUNTERMEASURE PRIORITY FOR DANGEROUS SLOPES BY GIS-BASED LOGIT ANALYSIS Peer-reviewed

    KOJIMA Masaki, SUGII Toshio, YASHIMA Atsushi, SAWADA Kazuhide, MORIGUCHI Syuji

    Japanese Geotechnical Journal　1　(3)　33-43　2006

    Publisher: The Japanese Geotechnical Society

    DOI： 10.3208/jgs.1.33 　

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    There are so many dangerous slopes that need appropriate countermeasures in Japan. In this study, a logit model is used to determine the priority of countermeasure for dangerous slope. A specific area in Gifu prefecture is targeted as the model area. First, some technical keywords related to the slope stability in the investigation chart prepared by specialists are chosen. Then, a logit model that determine the priority of countermeasure for slopes is proposed based on the selected keywords. The proposed model is applied to other areas in Gifu prefecture. It is concluded that the keywords used in the logit model varies from area to area even in Gifu prefecture.

  177. Numerical Analysis for interaction problem between geomaterial and rigid body based on fluid dynamics

    Moriguchi S, Yashima A, Sawada K, Goshima M

    Proc. 3rd International Workshop on New Frontiers in Computational Geotechnics　177-182　2006

  178. Quick and easy approach for large deformation simulations of Geomaterials without any special attention by "G-FRIC/2D"

    Sawada K, Yashima A, Moriguchi S

    Proc. 3rd International Workshop on New Frontiers in Computational Geotechnics　57-62　2006

  179. Numerical simulation of flow failure of geomaterials based on fluid dynamics Peer-reviewed

    Shuji Moriguchi, Atsushi Yashima, Kazuhide Sawada, Ryosuke Uzuoka, Masatoshi Ito

    Soils and Foundations　45　(2)　155-165　2005/04

    DOI： 10.3208/sandf.45.2_155 　

    ISSN： 0038-0806

  180. 補強土防護擁壁の急傾斜における実物大性能試験

    吉田 眞輝, 竜田 尚希, 西田 陽一, 井上 昭一, 八嶋 厚, 沢田 和秀, 森口 周二

    ジオシンセティックス論文集　20　295-300　2005

    Publisher: 国際ジオシンセティックス学会 日本支部

    DOI： 10.5030/jcigsjournal.20.295 　

    ISSN： 1344-6193

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    近年、土とジオテキスタイルを使用した補強土による「補強土防護擁壁工」が落石対策を主に実績が増えてきている。この工法は土の柔軟性による衝撃緩和効果と補強土の耐力(強さ)を併せ持ち,広範囲のエネルギー(100～5000KJ以上)に対応できるとともに、現地発生土や流用土を使用することでコスト削減にも努める工法である。過去、落石に対する実用性の試験を数回実施しているが、今回の実験では急傾斜地における土砂崩壊を想定して、実物大モデルに石及び土砂を衝突させて補強土防護擁壁の耐久性を確認した。実験では2つのタイプによる防護壁を構築した。本編では実験モデルの構造・施工方法および計測結果について報告する。

  181. デジタルカメラを用いた簡易斜面安定 性評価システムの構築 Peer-reviewed

    森口周二, 八嶋厚, 沢田和秀, 伊藤修宏, 荻本健二, 鷲見武富, 小嶋正樹, 中村洋一

    自然災害科学　23　(4)　565-582　2005

    Publisher:

    ISSN： 0286-6021

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    In this study, the system for a rock slope assessment is built using a digital camera photogrammetry. Additionally, for photo shoot of dangerous slopes, a remote controlled airplane equipped with digital camera is used. Although each technology, such as the digital photogrammetry, the slope assessment method and the photo shoot using remote control airplane are the existing technology, by combining those technologies, it is possible to estimate the stability of slopes quickly and at a low cost. Moreover it is possible to evaluate slope stability by administrators themselves. In this research, some applications are conducted to validate the effectivity of the systems. The details of the technique and its applications are reported in this paper.

  182. Fluid dynamics based analysis and experiments of geomaterial flow Peer-reviewed

    Sawada K, Moriguchi S, Yashima A, Ito M, Hadush S, Inoue S, Nishida Y

    Proc. of the 2005 International Conference on Landslide Risk Management / 18th Annual Vancouver Geotechnical Society Symposium　CD-ROM　2005

  183. Large deformation analysis in geomechanics using CIP method Peer-reviewed

    Kazuhide Sawada, Shuji Moriguchi, Atsushi Yashima, Feng Zhang, Ryosuke Uzuoka

    JSME International Journal, Series B: Fluids and Thermal Engineering　47　(4)　735-743　2004/11

    DOI： 10.1299/jsmeb.47.735 　

    ISSN： 1340-8054

  184. Numerical simulation of Tsukidate large-scale landslide using the CIP method

    Moriguchi, S, Sawada, K, Yashima, A, Uzuoka, R, Ito, M

    COMPUTATIONAL MECHANICS, WCCM VI in conjunction with APCOM’04　2185-2186　2004/09

  185. Validation of Visual preprocessor for simulation of sediment movement.

    Moriguchi Shuji, Kozima Masaki, Jason Beverage, Yashima Atsushi, Sawada Kazuhide

    Proceedings of the Japan National Conference on Geotechnical Engineering　39　2103-2104　2004

    Publisher: The Japanese Geotechnical Society

    DOI： 10.11512/jiban.JGS39.0.2103.0 　

  186. Mechanical behavior of reinforced river dike subjected to scouring made from soil using Geo-synthetics

    Sawada K, Yashima A, Moriguchi S, Yumira T, Kubota K, Maeda H, Hazama A, Matsumoto N

    Proc. of the 3rd Asian Regional Conference on Geo-synthetics　851-858　2004

  187. Numerical Simulation of ground flow Using CIP Method

    Sawada K, Hadush S, Moriguchi S, Yashima A, Murakami A, Takasuka T, Mutsuda H

    Proc. of 2nd International Workshop on New Frontiers in Computational Geotechnics　119-126　2004

  188. Application of lage deformation analysis using fluid dynamics to soils with cohesion and friction

    Hayashi Shigenori, Yashima Atushi, Sawada Kazuhide, Moriguchi Shuji

    Proceedings of the Japan National Conference on Geotechnical Engineering　38　2043-2044　2003

    Publisher: The Japanese Geotechnical Society

    DOI： 10.11512/jiban.JGS38.0.2043.0 　

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    Application of lage deformation analysis using fluid dynamics to soils with cohesion and friction.

  189. GIS for disasters-prevention-support system of highway

    Yamaguchi Makoto, Yashima Atushi, Zhang Feng, Moriguchi Shuji

    Proceedings of the Japan National Conference on Geotechnical Engineering　38　2215-2216　2003

    Publisher: The Japanese Geotechnical Society

    DOI： 10.11512/jiban.JGS38.0.2215.0 　

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    GIS for disasters-prevention-support system of highway.

  190. Mechanical behavior of a reinforced river dike subjected to scouring

    Kubota Kaoru, Yashima Atsushi, Sawada Kazuhide, Moriguchi Shuji, Yumira Tomo, Maeda Hidefumi, Matsumoto Nahoko, Hazama Akinori

    Proceedings of the Japan National Conference on Geotechnical Engineering　38　1809-1810　2003

    Publisher: The Japanese Geotechnical Society

    DOI： 10.11512/jiban.JGS38.0.1809.0 　

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    Mechanical behavior of a reinforced river dike subjected to scouring.

  191. 自然共生型補強土護岸工法の設計法について Peer-reviewed

    森口周二, 八嶋厚, 沢田和秀, 前田英史, 松本七保子, 間昭徳, 弓良知, 久保田薫

    ジオシンセティックス論文集　18　191-196　2003

    Publisher:

    DOI： 10.5030/jcigsjournal.18.191 　

    ISSN： 1344-6193

  192. 補強土河川護岸構造物の破壊実験と試験堤防再構築 Peer-reviewed

    森口周二, 八嶋厚, 沢田和秀, 弓良知, 前田英史, 松本七保子, 間昭徳

    ジオシンセティックス論文集　17　195-200　2002

    Publisher:

    DOI： 10.5030/jcigsjournal.17.195 　

    ISSN： 1344-6193

  193. Large deformation analysis of geomaterials in the framework of fluid dynamics using CIP method,

    Moriguchi S, Yashima A, Sawada K

    Proc. of 1st International Workshop on New Frontiers in Computational Geotechnics　107-110　2002

  194. Liquefaction induced lateral spread analysis using the CIP method Peer-reviewed

    S. Hadush, A. Yashima, R. Uzuoka, S. Moriguchi, K. Sawada

    Computers and Geotechnics　28　(8)　549-574　2001

    DOI： 10.1016/S0266-352X(01)00016-7 　

    ISSN： 0266-352X

  195. CIP and CA based large deformation analysis of collapse of a soil column

    K Sawada, S Hadush, S Moriguchi, A Yashima, A Murakami, T Takasuka, H Mutsuda

    COMPUTATIONAL MECHANICS, VOLS 1 AND 2, PROCEEDINGS　479-484　2001

  196. CIP based liquefaction induced lateral spreading analysis

    Hadush S, Moriguchi S, Yashima A, Sawada K, Uzuoka R

    Proc. of the 10th International Conference on Computer Methods and Advances in Geomechanics　1093-1098　2001

Show all ︎Show first 5

Misc. 164

  1. Fundamental Studies for Rainfall Induced Slope Failure Analysis with Switching Explicit and Implicit MPM

    吉田圭那, 飛彈野壮真, 菅井理一, 野村怜佳, 壇上徹, 石澤友浩, 森口周二, 酒井直樹, 寺田賢二郎

    計算工学講演会論文集(CD-ROM)　30　1014-1018　2025/06

    Publisher: 東京 : 日本計算工学会

    ISSN： 1342-145X

  2. Fluid-structure Interaction Analysis using Co-rotational Finite Element Method and Lattice Boltzmann Method

    平山大悟, 下畑和希, 野村怜佳, 渡辺勢也, 森口周二, 青木尊之, 寺田賢二郎

    計算工学講演会論文集(CD-ROM)　30　408-411　2025/06

    Publisher: 東京 : 日本計算工学会

    ISSN： 1342-145X

  3. Strain rate dependent shear resistance models for 2D shallow water type debris flow simulations

    野村怜佳, 大塚千穂, DOLOJAN Nilo L. J., 飛彈野壮真, 森口周二, 小高猛司, 寺田賢二郎

    計算工学講演会論文集(CD-ROM)　30　238-241　2025/06

    Publisher: 東京 : 日本計算工学会

    ISSN： 1342-145X

  4. Quantification of the impact of historical land use changes on disaster risk using numerical simulations

    森口周二, 吉沢美香, DOLOJAN Nilo, 野村怜佳, 菅原大介, 鈴木温, 寺田賢二郎

    計算工学講演会論文集(CD-ROM)　30　220-224　2025/06

    Publisher: 東京 : 日本計算工学会

    ISSN： 1342-145X

  5. Application of a Three-Dimensional Limit Equilibrium Method Based on Ellipsoidal Slip Surfaces and Particle Swarm Optimization to Large-Area Slope Stability Analysis

    須郷大地, CHOE John, 外里健太, 野村怜佳, 寺田賢二郎, 渡邊康介, 森口周二

    計算工学講演会論文集(CD-ROM)　30　1019-1023　2025/06

    Publisher: 東京 : 日本計算工学会

    ISSN： 1342-145X

  6. Three-Dimensional Multiscale Analysis Using RBF-Based Surrogate Homogenization Model at Finite Strain

    中村明莉, 山中耀介, 野村怜佳, 森口周二, 寺田賢二郎

    計算工学講演会論文集(CD-ROM)　30　1075-1079　2025/06

    Publisher: 東京 : 日本計算工学会

    ISSN： 1342-145X

  7. Seepage Failure Analysis by Semi-implicit MPM with Weighted Least Square B-spline Shape Function

    飛彈野壮真, 野村怜佳, 森口周二, 寺田賢二郎

    計算工学講演会論文集(CD-ROM)　30　849-853　2025/06

    Publisher: 東京 : 日本計算工学会

    ISSN： 1342-145X

  8. Application of u-p mixed formulation stabilized by variational multiscale (VMS) method in implicit MPM

    菅井理一, 野村怜佳, 森口周二, 寺田賢二郎

    計算工学講演会論文集(CD-ROM)　30　854-859　2025/06

    Publisher: 東京 : 日本計算工学会

    ISSN： 1342-145X

  9. Investigation of the applicability of quantum singular value transformation as a linear solver for the finite element method in structural analysis.

    我妻航也, 野村怜佳, 森口周二, 寺田賢二郎

    計算工学講演会論文集(CD-ROM)　30　570-572　2025/06

    Publisher: 東京 : 日本計算工学会

    ISSN： 1342-145X

  10. 個別要素法のためのベンチマーク問題の適切な計算条件の分析

    吉川大陽, 肖くん森, 野村怜佳, 寺田賢二郎, 森口周二

    土木学会全国大会年次学術講演会(Web)　80th　2025

  11. 地震力の空間分布を考慮した極限平衡理論に基づく広域を対象とする三次元斜面安定解析

    松田晃汰, 須郷大地, 野村怜佳, 大野晋, 寺田賢二郎, 森口周二

    土木学会全国大会年次学術講演会(Web)　80th　2025

  12. MPM-FEMハイブリッド法による土堤浸透過程の再現解析

    鈴木祐太, 菅井理一, 飛彈野壮真, 野村怜佳, 森口周二, 小高猛司, 寺田賢二郎

    土木学会全国大会年次学術講演会(Web)　80th　2025

  13. 量子フーリエ変換を用いた均質化解析

    飯塚聡, 我妻航也, 中村明莉, 野村怜佳, 森口周二, 寺田賢二郎

    土木学会全国大会年次学術講演会(Web)　80th　2025

  14. Wide-area slope stability analysis considering 3D geological structure

    森口周二, 須郷大地, どろはん にろ れむえる ふにお, 野村怜佳, 寺田賢二郎, 渡邊康介, 冨永英治, 岩永昇二, 高橋一雄

    地盤工学会誌(Web)　73　(5)　2025

    ISSN： 2435-5348

  15. Trees geometry modeling for 3D numerical flow tests on its inertial force effects

    野村怜佳, 石澤修司, 森口周二, 寺田賢二郎

    計算工学講演会論文集(CD-ROM)　29　1356-1359　2024/06

    Publisher: 東京 : 日本計算工学会

    ISSN： 1342-145X

  16. Real-time Tsunami Forecast with Scenario Superposition using Bayesian Approach

    藤田真粹, 野村怜佳, 森口周二, 大竹雄, LEVEQUE Randall J., 寺田賢二郎

    計算工学講演会論文集(CD-ROM)　29　1367-1371　2024/06

    Publisher: 東京 : 日本計算工学会

    ISSN： 1342-145X

  17. Application of Quantum Annealing to Slope Stability Analysis

    外里健太, JUNSEN Xiao, 須郷大地, 山内翔太, 野村怜佳, 森口周二, 高瀬慎介, 金子賢治, 寺田賢二郎

    計算工学講演会論文集(CD-ROM)　29　947-950　2024/06

    Publisher: 東京 : 日本計算工学会

    ISSN： 1342-145X

  18. Large-area Three-dimensional Slope Stability Analysis based on Limit Equilibrium Theory with the Aid of DBSCAN

    須郷大地, 藤田真粹, DOLOJAN Nilo, 外里健太, 野村怜佳, 森口周二, 寺田賢二郎

    計算工学講演会論文集(CD-ROM)　29　1023-1028　2024/06

    Publisher: 東京 : 日本計算工学会

    ISSN： 1342-145X

  19. A surrogate computational homogenization for viscoplastic composites based on RBF interpolation

    山中耀介, 森口周二, 寺田賢二郎

    計算工学講演会論文集(CD-ROM)　29　2024

    ISSN： 1342-145X

  20. Semi-Implicit MPM with Suction Dependant Constitutive Model for Seepage-induced Slope Failure Analysis

    飛彈野壮真, 森口周二, 寺田賢二郎

    計算工学講演会論文集(CD-ROM)　29　2024

    ISSN： 1342-145X

  21. Basics: Part III-Create a Bayesian-based predictive model

    加村晃良, 大竹雄, 森口周二, 村尾英彦

    地盤工学会誌(Web)　72　(6)　2024

    ISSN： 2435-5348

  22. RBF-based surrogate model for computational homogenization of inelastic composites in finite deformation framework

    中村明莉, 山中耀介, 森口周二, 寺田賢二郎

    計算工学講演会論文集(CD-ROM)　29　2024

    ISSN： 1342-145X

  23. 代理モデルのための打ち切りを考慮した最尤推定による落石到達位置分布のモデル化

    山口皓也, 津田悠人, 吉田郁政, 森口周二, 吉田大活, 珠玖隆行

    土木学会全国大会年次学術講演会(Web)　79th　2024

  24. 計算固体力学における最小化問題に対する量子アニーリングの適用性に関する基礎的検討

    我妻航也, 肖くん森, 山中耀介, 野村怜佳, スクタナソーン ナルテープ, 村松眞由, 森口周二, 寺田賢二郎

    土木学会全国大会年次学術講演会(Web)　79th　2024

  25. 都市規模の数値シミュレーションによる非構造部材の耐震性能に着目した地震リスク評価

    山岸広祐, 湯東暘, 野村怜佳, 森口周二, 寺田賢二郎, 野島和也, 櫻庭雅明, 佐藤誠一

    土木学会全国大会年次学術講演会(Web)　79th　2024

  26. 流体構造連成解析に向けた共回転定式化とレベルセット法

    平山大悟, 野村怜佳, 森口周二, 青木尊之, 寺田賢二郎

    土木学会全国大会年次学術講演会(Web)　79th　2024

  27. XPICを用いたMPMによる飽和土流動・衝突解析におけるパラメータスタディー

    吉田圭那, 飛彈野壮真, 野村怜佳, 森口周二, 寺田賢二郎

    土木学会全国大会年次学術講演会(Web)　79th　2024

  28. 現代と過去の実地形を対象とした豪雨災害シミュレーション

    吉沢美香, DOLOJAN Nilo Lemuel J., 野村怜佳, 森口周二, 寺田賢二郎

    土木学会全国大会年次学術講演会(Web)　79th　2024

  29. 防潮林の津波減衰効果評価を目的とした2次元浅水長波解析における慣性力の影響

    石澤修司, 野村怜佳, 森口周二, 寺田賢二郎

    土木学会全国大会年次学術講演会(Web)　79th　2024

  30. Fundamental studies for saturated soil flows and its impact behaviors using Material Point Method with XPIC interpolation

    吉田圭那, 飛彈野壮真, 野村怜佳, 森口周二, 寺田賢二郎

    地盤工学研究発表会(Web)　59th　2024

  31. Clustering aided wide-area slope stability analysis based on limit equilibrium theory

    中村優見, 須郷大地, 野村怜佳, 森口周二, 寺田賢二郎

    地盤工学研究発表会(Web)　59th　2024

  32. On the modeling of resistance force for two-dimensional sediment flow simulations

    大塚千穂, 飛彈野壮真, DOLOJAN Nilo, 野村怜佳, 森口周二, 寺田賢二郎

    地盤工学研究発表会(Web)　59th　2024

  33. Rapid Prediction of Regional Landslide during Rainfall Using Gaussian Process Regression and Spatial Mode Decomposition

    外里健太, 須郷大地, DOLOJAN Nilo, 野村怜佳, 高瀬慎介, 金子賢治, 寺田賢二郎, 森口周二

    地盤工学シンポジウム論文集(Web)　64th　2024

  34. 三次元極限平衡理論に基づく広域斜面安定解析—Wide-area Slope Stability Analysis based on Limit Equilibrium Theory

    須郷 大地, 藤田 真粹, 外里 健太, 野村 怜佳, 森口 周二, 寺田 賢二郎

    計算工学講演会論文集 = Proceedings of the Conference on Computational Engineering and Science / 日本計算工学会 編　28　404-408　2023/05

    Publisher: 日本計算工学会

  35. 落石形状特性が到達分布に与える影響のモデル化—Modeling the Influence of Rock Shape on Run-out distribution of Rockfall

    吉田 大活, 野村 怜佳, 森口 周二, 寺田 賢二郎, 津田 悠人, 吉田 郁政

    計算工学講演会論文集 = Proceedings of the Conference on Computational Engineering and Science / 日本計算工学会 編　28　1299-1301　2023/05

    Publisher: 日本計算工学会

  36. 非Darcy流れにおける透水性低下特性に関する数値解析的検討—A Numerical Study on the Characterization of Permeability Reduction in Non-Darcy Flows

    一藤 亮太, 橘 一光, 野村 怜佳, 高瀬 慎介, 森口 周二, 寺田 賢二郎

    計算工学講演会論文集 = Proceedings of the Conference on Computational Engineering and Science / 日本計算工学会 編　28　368-372　2023/05

    Publisher: 日本計算工学会

  37. ロバスト主成分分析に基づく沖合津波観測点配置の最適化—Optimization of Offshore Gauge Configuration with Robust Principal Component Analysis

    藤田 真粹, 野村 怜佳, 大竹 雄, 越村 俊一, 森口 周二, 寺田 賢二郎

    計算工学講演会論文集 = Proceedings of the Conference on Computational Engineering and Science / 日本計算工学会 編　28　79-82　2023/05

    Publisher: 日本計算工学会

  38. 多様なシナリオデータベースの融合による津波リスク同定—Tsunami risk evaluation by the combined use of heterogenous datasets

    野村 怜佳, 大竹 雄, 森口 周二, 越村 俊一, Randall J. LeVeque, 寺田 賢二郎

    計算工学講演会論文集 = Proceedings of the Conference on Computational Engineering and Science / 日本計算工学会 編　28　83-86　2023/05

    Publisher: 日本計算工学会

  39. 斜面安定解析結果を用いた豪雨による広域斜面崩壊の即時予測—Rapid prediction of rainfall-induced landslides for a wide area using slope stability analysis results

    外里 健太, 野村 怜佳, 森口 周二, 寺田 賢二郎

    計算工学講演会論文集 = Proceedings of the Conference on Computational Engineering and Science / 日本計算工学会 編　28　63-68　2023/05

    Publisher: 日本計算工学会

  40. 浸水被害も含めた,新たな医療機関の事業継続計画(BCP)策定に資する研究 頻発・激甚化する豪雨水害とBCPのあり方に関する研究

    佐々木宏之, 橋本雅和, MAS Erick, 榎田竜太, 丸谷浩明, 森口周二

    浸水被害も含めた、新たな医療機関の事業継続計画(BCP)策定に資する研究 令和4年度 総括研究報告書(Web)　2023

  41. Slope stability analysis of a real wide-area using 3-D simplified Bishop’s method and Hovland’s method

    中村優見, 須郷大地, 外里健太, 野村怜佳, 森口周二, 寺田賢二郎

    土木学会全国大会年次学術講演会(Web)　78th　2023

  42. A Study on Resistance Models and its Applicability for Large-scale Debris Flow Simulations

    大塚千穂, 飛彈野壮真, NILO Dolojan, 野村怜佳, 森口周二, 寺田賢二郎

    土木学会全国大会年次学術講演会(Web)　78th　2023

  43. Slope stability analysis during heavy rainfall using the three-dimensional Limit Equilibrium method over a wide area

    須郷大地, 藤田真粹, 外里健太, 野村怜佳, 森口周二, 寺田賢二郎

    地盤工学研究発表会(Web)　58th　2023

  44. Decision-making Support Systems Using Historical Disaster Information

    倉恒子, 森口周二, MAS Erick, 越村俊一, 奥村誠, 重松直子, 藤野昭典, 清水仁, 小阪尚子, 久田正樹

    情報科学技術フォーラム講演論文集　22nd　2023

  45. 自然災害への対応力を身につけよう—第61回全国保育問題研究集会京都集会(オンライン)報告

    森口 周二

    季刊保育問題研究 / 全国保育問題研究協議会編集委員会 編　(317)　196-226　2022/10

    Publisher: 東京 : 新読書社

    ISSN： 0287-8453

  46. 個別要素法のできること Peer-reviewed

    森口 周二

    地盤工学会誌　70(2)　4-7　2022

  47. Use of Data Science in Disaster Risk Evaluation Using Discrete Element Method

    Moriguchi Shuji

    Journal of the Society of Powder Technology, Japan　59　(5)　226-231　2022

    Publisher: The Society of Powder Technology, Japan

    DOI： 10.4164/sptj.59.226 　

    ISSN： 0386-6157

    eISSN： 1883-7239

    More details Close

    Since great variability is generally included in natural disasters, it’s necessary to evaluate the risk considering the variability. Because of the rapid development of numerical simulations, the risk analysis in consideration of the variability is becoming possible. However, there is still difficulties to perform a large number of simulation cases at the practical level. This paper introduce studies in that DEM simulations and data science techniques are efficiently combined to evaluate the risk of rockfalls and sediment flow problems. Through the introductions of those studies, the importance of integrating disaster simulations and data science techniques is discussed.

  48. 支持力問題の一斉解析による不確実性の定量化の試み—Attempt to Quantify Uncertainty by Simultaneous Analyses of Bearing Capacity Problem

    中井 健太郎, 森口 周二, 大野 進太郎, 佐藤 伸, 若井 明彦, 竹原 和夫, 鈴木 隼人, 石川 裕規, 馬塲 菜々子, 渦岡 良介, 櫻井 英行

    計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science / 日本計算工学会 編　26　1163-1166　2021/06

    Publisher: 日本計算工学会

  49. Realtime tsunami risk estimation approach development using particle filter

    26　487-490　2021/06

    Publisher: 日本計算工学会

  50. 落石挙動の数値モデリング Peer-reviewed

    森口 周二, 寺田 賢二郎

    地盤工学会誌　69　2021

  51. Special issue on the heavy rain event of July 2018 in western Japan

    Tatsuhiko Uchida, Yoshihisa Akamatsu, Yoshiharu Suzuki, Shuji Moriguchi, Yasushi Oikawa, Hiromi Shirahata, Norihiro Izumi

    Journal of Japan Society of Civil Engineers　9　(1)　1-7　2021

    DOI： 10.2208/JOURNALOFJSCE.9.1_1 　

    eISSN： 2187-5103

  52. 令和元年台風19号における丸森町の被害調査報告—Report on damage survey in Marumori Town caused by Typhoon No.19

    柴山 明寛, 森口 周二, 橋本 雅和

    東北地域災害科学研究 = Tohoku journal of natural disaster science / 自然災害研究協議会東北地区部会, 日本自然災害学会東北支部 編　56　17-20　2020/03

    Publisher: 東北大学災害科学国際研究所東北地区自然災害資料センター

  53. 三陸沖北部地震を考慮した八戸市における X-GISを用いた津波遡上解析

    中村 優真, 高瀬 慎介, 野島 和也, 櫻庭 雅明, 山口 裕矢, 森口 周二, 寺田 賢二郎

    東北地域災害科学研究　56　179-182　2020/03

  54. Proposed disaster response based on probable maximum flood evaluation to improve local awareness of disaster-related information

    呉修一, 千村紘徳, 地引泰人, 佐藤翔輔, 森口周二, 邑本俊亮

    自然災害科学　38　(4)　2020

    ISSN： 0286-6021

  55. V&V-シミュレーションの信頼性確保のために-土木分野におけるV&Vの現状

    櫻井英行, 渦岡良介, 森口周二, 山本佳士, 車谷麻緒, 岡崎慎一郎, 上田尚史, 小倉大季

    日本機械学会誌　123　(1222)　2020

    ISSN： 0021-4728

  56. Road Slope Risk Assessment and Optimal Allocation of Protection Structures Using Rockfall Simulation

    菅野蓮華, 森口周二, 寺田賢二郎, 林俊介, 磯部有作, 吉田郁政

    計算工学講演会論文集(CD-ROM)　24　ROMBUNNO.B‐11‐03　2019/06/29

    ISSN： 1342-145X

  57. Decoupled Multi-scale Analysis of FRP in Consideration for Dependency of Resin's Properties on Degree of Cure

    齋藤 理沙, 山口 裕矢, 森口 周二, 三原 康子, 小林 卓哉, 寺田 賢二郎

    計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science　24　2019/05

    Publisher: 日本計算工学会

  58. Estimation of impact force acting on structures caused by sediment movement using Material Point Method

    吉田 昂平, 山口 裕矢, 森口 周二, 寺田 賢二郎

    計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science　24　2019/05

    Publisher: 日本計算工学会

  59. 地盤流動化の数値解析を目的としたMPMの提案と適用性の検討

    山口裕矢, 高瀬慎介, 森口周二, 寺田賢二郎

    計算工学講演会論文集　24　B-05-04　2019/05

  60. 二次元広域流れにおける樹木抵抗評価のための三次元数値実験手法

    野村怜佳, 高瀬慎介, 森口周二, 寺田賢二郎

    計算工学講演会論文集　24　B-05-05　2019/05

  61. An evaluation of spatial risk distribution of snow avalanche using 3D simulation and empirical formula of impact force

    鬼頭昂平, 菅野蓮華, 小谷拓磨, 森口周二, 寺田賢二郎, 中村一樹, 上石勲

    計算工学講演会論文集(CD-ROM)　24　2019

    ISSN： 1342-145X

  62. Determination of macroscopic viscoelastic properties as well as macroscopic thermal deformation and cure-shrinkage properties of fiber reinforced plastics in consideration of cure process

    SAITO Risa, YAMAGUCHI Yuya, MORIGUCHI Shuji, MIHARA Yasuko, KOBAYASHI Takaya, TERADA Kenjiro

    Transactions of the JSME (in Japanese)　85　(870)　18-00396-18-00396　2019

    Publisher: The Japan Society of Mechanical Engineers

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    &lt;p&gt;This study presents a method of determining the macroscopic viscoelastic properties as well as the macroscopic coefficients of thermal expansion and cure-shrinkage of fiber-reinforced plastics (FRP) in consideration of the dependence of the viscoelastic properties of the resin used in the matrix phase on the degree of cure (DOC). The DOC-dependent viscoelastic material behavior of the resin is represented by the generalized Maxwell model and is accompanied with non-mechanical strains such as thermal strain and cure shrinkage. Within the framework of computational homogenization, a series of numerical material tests (NMTs) are conducted on a representative volume element (microstructure) with different DOCs to discretely evaluate the macroscopic viscoelastic properties. On the assumption that the macroscopic material behavior can be represented by the anisotropic version of the generalized Maxwell model, we originally propose a method to determine the macroscopic viscoelastic properties and the macroscopic coefficients of thermal expansion and cure-induced shrinkage, both of which are functions of DOC. After numerical examples to determine these properties for a specific unit cell of FRP are presented, a simple numerical verification is carried out to demonstrate that the proposed method is capable of determining the DOC-dependent macroscopic viscoelastic properties associated with mechanical and non-mechanical strains.&lt;/p&gt;

  63. An evaluation method of spatial risk distribution based on 3D snow avalanche simulation

    鬼頭昂平, 小谷拓磨, 山口裕也, 森口周二, 寺田賢二郎, 小田憲一, 上石勲

    計算工学講演会論文集(CD-ROM)　23　ROMBUNNO.B‐08‐06　2018/06/06

    ISSN： 1342-145X

  64. Numerical evaluation of viscous dissipation for flow involving coastal forest

    23　3p　2018/06

    Publisher: 日本計算工学会

  65. Development of solid-liquid mixture MPM and its application to deformation and flow analysis of soil

    山口 裕矢, 高瀬 慎介, 森口 周二, 寺田 賢二郎

    計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science　23　2018/06

    Publisher: 日本計算工学会

  66. Multiscale simulation of FRP considering cure shrinkage of resin

    齋藤 理沙, 山口 裕矢, 森口 周二, 寺田 賢二郎, 三原 康子, 小林 卓哉

    計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science　23　2018/06

    Publisher: 日本計算工学会

  67. Effects of material properties and particle shape characteristics on repose angle

    奥山 大輝, 橘 一光, 寺田 賢二郎, 森口 周二, 青木 尊之

    計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science　23　2018/06

    Publisher: 日本計算工学会

  68. Statistical modeling for evaluating the optimal placement of rockfall protection structures on a road

    Hasuka Kanno, Shuji Moriguchi, Kenjiro Terada, Shunsuke Hayashi, Yusaku Isobe, Shoji Iwanaga

    Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))　74　(2)　I_13-I_21　2018

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejam.74.i_13 　

    eISSN： 2185-4661

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    We propose an rockfall prevention methodology coupling numerical simulation, risk assessment, and the optimal design of protective measures on a transport corridor. Firstly, rockfall simulations are carried out and the location and the kinetic energy when rocks reached the transport corridor respectively is recorded. Secondly, the rockfall hazard is quantified, followed by the mitigation effect of placing a protective measure. Thirdly, an optimization problem that aims to maximize the total mitigation effect under constraints is formulated. Its solution finally shows the optimal placement of protective measures on the transport corridor. In this study, the effectivity of the proposed methodology is validated in a simplified application.

  69. 数値解析のV&V(検証と妥当性確認)

    渦岡良介, 櫻井英行, 中井健太郎, 森口周二

    地盤工学会誌　65　(11/12)　48‐49　2017/11/01

    ISSN： 1882-7276

  70. A study on the suppression of CFRP static strength variation using data mining techniques

    22　3p　2017/05

    Publisher: 日本計算工学会

  71. A Quantitative Evaluation Method for Effective Placement of Rockfall Countermeasures Based on a Numerical Simulation

    22　3p　2017/05

    Publisher: 日本計算工学会

  72. Characterization of deformation properties of surface ground due to fault movement using finite-strain damage model

    OKAWA Marina, SUZUKI Shun, TAKASE Shinsuke, MORIGUCHI Shuji, TERADA Kenjiro, KURUMATANI Mao

    Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))　22　(2)　4p-I_505　2017/05

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejam.73.i_497 　

    eISSN： 2185-4661

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    In the 2016 Kumamoto Earthquake, numerous serious structural damages occurred along the active faults. Many of these damages are caused by the fault movement and the deformation of surface ground. This suggests the importance of deformation prediction of the surface ground around the active fault. In this study, employing finite element method with a finite-strain damage model, we conduct a series of case studies on numerical models with ideal topography as a basis examination for predicting the surface ground deformation. After confirming the applicability of the employed material models and analysis conditions, we investigate the effects of the inclination of the fault and the topography on the surface rupture due to fault movement.

  73. A proposal of evaluation method for tsunami loading including debris impact using surrogate model

    22　3p　2017/05

    Publisher: 日本計算工学会

  74. Effects of uncertainties of slope in rockfall simulations

    22　5p　2017/05

    Publisher: 日本計算工学会

  75. Modeling of Solid-Liquid Mixture for Fluid-Sediment Interaction Analysis

    22　4p　2017/05

    Publisher: 日本計算工学会

  76. Simulations of Snow Avalanches considering actual complex terrain using unstructured mesh

    山口 裕矢, 高瀬 慎介, 森口 周二, 寺田 賢二郎, 上石 勲

    計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science　22　4p　2017/05

    Publisher: 日本計算工学会

  77. Numerical analysis on non-linear characteristic of permeability coefficient of geomaterial using fluid-particle-coupled simulation

    橘 一光, 森口 周二, 高瀬 慎介, 寺田 賢二郎, 青木 尊之, 神谷 浩二, 小高 猛司

    計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science　22　4p　2017/05

    Publisher: 日本計算工学会

  78. Reproduction of the Nasu-Avalanche which occurred on March 27 using three-dimensional flow

    小田憲一, 高瀬慎介, 森口周二, 上石勲, 内山庄一郎, 中村一樹, 阿部直樹

    雪氷研究大会講演要旨集(Web)　2017　75(J‐STAGE)-75　2017

    Publisher: The Japanese Society of Snow and Ice / Japan Society for Snow Engineering

    DOI： 10.14851/jcsir.2017.0_75 　

    ISSN： 1883-0889

  79. 土木の工学シミュレーションにおけるV&Vの重要性と課題

    櫻井英行, 桐山貴俊, 渦岡良介, 中井健太郎, 森口周二

    土木学会年次学術講演会講演概要集(CD-ROM)　71st　ROMBUNNO.CS8‐022-70　2016/08

  80. 災害予測シミュレーションの高度化とその見える化の試み : 計算災害科学の確立にむけて (安全・安心な生活とICT)

    寺田 賢二郎, 森口 周二, 高瀬 慎介

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報　116　(92)　63-72　2016/06/14

    Publisher: 電子情報通信学会

    ISSN： 0913-5685

  81. Tsunami debris simulation using shallow water equations based on finite cover method

    21　4p　2016/05

    Publisher: 日本計算工学会

  82. A Spatial and Probabilistic Risk Evaluation Method of Rockfalls Based on Discrete Element Method

    21　6p　2016/05

    Publisher: 日本計算工学会

  83. Two-stage cohesive failure simulation with co-rotational formulation

    21　4p　2016/05

    Publisher: 日本計算工学会

  84. A simulation of a real-scale sediment flow experiment using DEM

    21　4p　2016/05

    Publisher: 日本計算工学会

  85. Simulations of Snow Avalanches Using Stabilized Finite Element Method

    山口 裕矢, 高瀬 慎介, 森口 周二, 寺田 賢二郎

    計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science　21　4p　2016/05

    Publisher: 日本計算工学会

  86. A Numerical Simulation of Grain-scale seepage flow of Geomaterials using Immersed Boundary Method

    橘 一光, 森口 周二, 高瀬 慎介, 寺田 賢二郎, 神谷 浩二, 小高 猛司

    計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science　21　4p　2016/05

    Publisher: 日本計算工学会

  87. Conference Reports : The 21st Conference on Computational Engineering and Science

    21　(3)　3479-3481　2016

    Publisher: 日本計算工学会

    ISSN： 1341-7622

  88. 平成27年9月関東・東北豪雨 宮城県仙台市青葉区川内三十人町の斜面崩壊調査報告書

    森口, 周二

    2015/09/13

    Publisher: 東北大学災害科学国際研究所

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    紀要類（bulletin）

  89. 初級講座 地盤工学のための個別要素法(7)パラメータの設定と土と地盤の作り方(その2)

    前田 健一, 森口 周二, 松島 亘志, 小山 倫史, 中田 幸男

    地盤工学会誌 : 土と基礎　63　(9)　56-64　2015/09

    Publisher: 地盤工学会

    ISSN： 1882-7276

  90. 初級講座 地盤工学のための個別要素法(6)パラメータの設定と土と地盤の作り方(その1)

    63　(8)　71-78　2015/08

    Publisher: 地盤工学会

    ISSN： 1882-7276

  91. 初級講座 地盤工学のための個別要素法(5)個別要素法の様々な拡張

    63　(7)　49-56　2015/07

    Publisher: 地盤工学会

    ISSN： 1882-7276

  92. 地震荷重を受ける鋼製橋脚のき裂進展評価

    番場良平, 新宅勇一, 村松眞由, 高瀬慎介, 森口周二, 寺田賢二郎, 堤成一郎

    計算工学講演会論文集(CD-ROM)　20　ROMBUNNO.A-1-2　2015/06/08

    ISSN： 1342-145X

  93. 有限被覆法による自動き裂進展解析

    新宅勇一, 新宅勇一, 村松眞由, 高瀬慎介, 森口周二, 寺田賢二郎, 堤成一郎, 車谷麻緒

    計算工学講演会論文集(CD-ROM)　20　ROMBUNNO.B-8-3　2015/06/08

    ISSN： 1342-145X

  94. 埋込型結合力モデルを導入した損傷構成則

    新宅勇一, 新宅勇一, 村松眞由, 高瀬慎介, 森口周二, 寺田賢二郎, 堤成一郎

    計算工学講演会論文集(CD-ROM)　20　ROMBUNNO.D-4-2　2015/06/08

    Publisher: 日本計算工学会

    ISSN： 1342-145X

  95. Effects grain characteristic in sediment flow simulations using DEM

    20　4p　2015/06

    Publisher: 日本計算工学会

  96. An evaluation of anisotropic deformation and strength characteristics of ground structures using numerical material testing

    20　4p　2015/06

    Publisher: 日本計算工学会

  97. Development of a Numerical Method for Debris Flow based on Stabilized Finite Element Method

    20　4p　2015/06

    Publisher: 日本計算工学会

  98. Finite Strain Viscoelasto-Viscoplastic Constitutive Model for Thermoplastic Resins in consideration of Self-heating Phenomenon

    20　6p　2015/06

    Publisher: 日本計算工学会

  99. Probabilistic Evaluation of Tsunami Hazard Based on Numerical Simulation

    20　6p　2015/06

    Publisher: 日本計算工学会

  100. 初級講座 地盤工学のための個別要素法(4)二次元の個別要素法

    松島 亘志, 前田 健一, 森口 周二, 中田 幸男, 小山 倫史

    地盤工学会誌 : 土と基礎　63　(6)　55-62　2015/06

    Publisher: 地盤工学会

    ISSN： 1882-7276

  101. A simulation of a drop-experiment of crushed stone using DEM

    森口 周二, 橘 一光, 寺田 賢二郎

    計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science　20　5p　2015/06

    Publisher: 日本計算工学会

  102. Micro-Scale Permeability Behavior of Geomaterial Expressed in Solid-Fluid Coupled Analysis Using Immersed Boundary Method

    橘 一光, 森口 周二, 高瀬 慎介

    計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science　20　5p　2015/06

    Publisher: 日本計算工学会

  103. Clarification of calculation conditions for rockfall and rock failure simulations

    Moriguchi Shuji

    Annual report of the Society for the Promotion of Construction Engineering　50　21-27　2015/04/01

    Publisher: Tohoku University

    ISSN： 0288-9994

  104. 初級講座 地盤工学のための個別要素法(2)個別要素法でできること

    中田 幸男, 前田 健一, 松島 亘志, 森口 周二, 小山 倫史

    地盤工学会誌 : 土と基礎　63　(4)　49-56　2015/04

    Publisher: 地盤工学会

    ISSN： 1882-7276

  105. 防潮林による津波減衰効果を評価するためのマルチスケール数値実験

    野村怜佳, 高瀬慎介, 寺田賢二郎, 森口周二

    計算工学講演会論文集(CD-ROM)　20　2015

    ISSN： 1342-145X

  106. Extraction of embankments on mountain roads using the digital elevation model

    K. Sawada, S. Moriguchi, N. Asano

    Computer Methods and Recent Advances in Geomechanics - Proceedings of the 14th Int. Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014　863-868　2015

  107. 3D Simulation of an actual snow avalanche

    K. Sawada, S. Moriguchi, K. Oda

    Computer Methods and Recent Advances in Geomechanics - Proceedings of the 14th Int. Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014　495-500　2015

    DOI： 10.1201/b17435-83 　

  108. Numerical modeling of post-earthquake debris flows

    Z. L. Dai, Y. Huang, H. L. Cheng, Q. Xu, K. Sawada, A. Yashima, S. Moriguchi

    Computer Methods and Recent Advances in Geomechanics - Proceedings of the 14th Int. Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014　1811-1815　2015

    DOI： 10.1201/b17435-321 　

  109. 塑性変形に伴う損傷を考慮した結合力モデルの提案

    新宅勇一, 村松眞由, 堤成一郎, 寺田賢二郎, 京谷孝史, 加藤準治, 森口周二, 高瀬慎介

    日本機械学会計算力学講演会論文集(CD-ROM)　27th　(0)　ROMBUNNO.1913-496　2014/11/21

    Publisher: 一般社団法人 日本機械学会

    ISSN： 1348-026X

  110. 多結晶体内の水素拡散および水素脆化き裂進展連成解析

    新宅勇一, 村松眞由, 堤成一郎, 寺田賢二郎, 京谷孝史, 加藤準治, 森口周二, 高瀬慎介

    日本機械学会計算力学講演会論文集(CD-ROM)　27th　(0)　ROMBUNNO.2020-542　2014/11/21

    Publisher: 一般社団法人 日本機械学会

    ISSN： 1348-026X

  111. 安定化有限要素法を用いた津波遡上の2D‐3Dハイブリッド計算

    高瀬慎介, 加藤準治, 森口周二, 寺田賢二郎, 京谷孝史, 野島和也, 桜庭雅明, 車谷麻緒, 浅井光輝, 樫山和男

    計算工学講演会論文集(CD-ROM)　19　ROMBUNNO.G-7-6　2014/06/11

    ISSN： 1342-145X

  112. 化学的作用を考慮した多結晶体内のき裂進展解析

    新宅勇一, 寺田賢二郎, 加藤準治, 京谷孝史, 森口周二, 高瀬慎介, 堤成一郎

    計算工学講演会論文集(CD-ROM)　19　ROMBUNNO.D-6-4　2014/06/11

    ISSN： 1342-145X

  113. 安定化有限要素法を用いた津波遡上の2D-3Dハイブリッド計算—2D-3D Hybrid Method for Tsunami Simulation based on Stabilized Finite Element Method

    高瀬 慎介, 加藤 準治, 森口 周二

    計算工学講演会論文集 = Proceedings of the Conference on Computational Engineering and Science / 日本計算工学会 編　19　3p　2014/06

    Publisher: 東京 : 日本計算工学会

  114. A Modeling Error in Behavior Prediction of Rockfalls Using Sphere Elements Based DEM

    森口 周二, 橘 一光, 寺田 賢二郎

    計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science　19　6p　2014/06

    Publisher: 日本計算工学会

  115. 土砂災害シミュレーションの現状と課題

    森口周二

    計算工学　19　(1)　11-14　2014/01/31

    Publisher: 日本計算工学会

  116. The Present Situation and Problems of Sediment Disaster Simulations

    19　(1)　3045-3048　2014

    Publisher: 日本計算工学会

    ISSN： 1341-7622

  117. Characteristics of heavy rainfall disaster in Akita and Iwate Prefecture on August 2013

    呉 修一, 久利美和, 安倍 祥, 森口周二, 有働恵子, 真野 明

    東北地域災害科学研究　50　81-86　2014

    Publisher: 仙台 : 東北大学災害科学国際研究所東北地区自然災害資料センター

  118. Landslide susceptibility analysis with logistic regression model based on FCM sampling strategy

    Liang Jie Wang, Kazuhide Sawada, Shuji Moriguchi

    Computers and Geosciences　57　81-92　2013/08

    DOI： 10.1016/j.cageo.2013.04.006 　

    ISSN： 0098-3004

  119. A framework of rockfall hazard evaluation using DEM with consideration of uncertainties

    18　4p　2013/06

    Publisher: 日本計算工学会

  120. A study on a modeling error of DEM in rockfall simulations

    Moriguchi Shuji, Sawada Kazuhide

    NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan　62　13　2013

    Publisher: National Committee for IUTAM

    DOI： 10.11345/japannctam.62.0.13.0 　

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    Discrete element method (DEM) has been used in various research fields. Because the method can describe collision of solids, it is recently used in rockfall simulations. Although complex shape of rocks can be considered, simulated results strongly depend on surface resolution (numbers of particles). It is therefore important to investigate a relation between a modeling error and surface resolution. In this study, a series of simple laboratory tests and its simulations were carried out. obtained results are analyzed based on statistical analysis, and the modeling error of DEM in rockfall simulations is discussed.

  121. 防護工の評価のための雪崩シミュレーション

    森口周二, 沢田和秀, 八嶋厚, 上石勲

    地盤工学研究発表会発表講演集(CD-ROM)　48th　ROMBUNNO.1031-1　2013

  122. 土砂混じり雪崩に関する基礎的研究

    久野泰嗣, 森口周二, 沢田和秀, 上石勲, 岩田麻衣子

    地盤工学研究発表会発表講演集(CD-ROM)　48th　ROMBUNNO.19-1　2013

  123. GIS-based landslide susceptibility mapping using logistical regression method with LiDAR data in nature slopes

    Liangjie Wang, Kazuhide Sawada, Shuji Moriguchi

    Disaster Advances　5　(4)　258-263　2012/10

    ISSN： 0974-262X

    eISSN： 2278-4543

  124. 浄化槽技術者のための土質力学 ([9]土のせん断強さ),

    森口周二

    月刊浄化槽　439　(439)　35-40　2012/10

    Publisher: 公益財団法人日本環境整備教育センター

    ISSN： 1347-6866

  125. ビンガム流体モデルによる雪崩解析

    森口周二, 沢田和秀, 上石勲, 阿部修, 小田憲一

    計算工学講演会論文集(CD-ROM)　17　ROMBUNNO.E-1-3　2012/05/29

    Publisher: 日本計算工学会

    ISSN： 1342-145X

  126. 浄化槽技術者のための土質力学 ([3]有効応力と間隙水圧)

    森口周二

    月刊浄化槽　433　(433)　28-32　2012/05

    Publisher: 公益財団法人日本環境整備教育センター

    ISSN： 1347-6866

  127. 大変形流体解析手法を用いたカナダの雪崩解析

    小田憲一, WAN Richard G, JAMIESON Bruce, 森口周二, 沢田和秀

    日本自然災害学会学術講演会講演概要集　31st　27-28　2012

  128. Simulation of snow avalanche with application to a Canadian case study

    Oda Kenichi, Wan Richard G, Jamieson Bruce, Moriguchi Shuji, Sawada Kazuhide

    Summaries of JSSI and JSSE Joint Conference on Snow and Ice Research　2012　(0)　100-100　2012

    Publisher: The Japanese Society of Snow and Ice / Japan Society for Snow Engineering

    DOI： 10.14851/jcsir.2012.0_100 　

    ISSN： 1883-0870

  129. 811 Snow avalanche simulation using a non-Newtonian fluid model

    MORIGUCHI Shuji, SAWADA Kazuhide, Kamiishi Isao, Oda Kenichi

    The Proceedings of The Computational Mechanics Conference　2012　(0)　24-26　2012

    Publisher: The Japan Society of Mechanical Engineers

    ISSN： 1348-026X

  130. A simulation of real scale experiment of slope excavation using SPH method

    16　4p　2011/05

    Publisher: 日本計算工学会

  131. 流体解析手法による雪崩の再現解析

    小田憲一, 森口周二, 八嶋厚, 沢田和秀, 上石勲

    地盤工学研究発表会発表講演集(CD-ROM)　46th　ROMBUNNO.950　2011

  132. ストマー型粘度計による流動化した雪のせん断特性の把握

    山川大貴, 小田憲一, 沢田和秀, 森口周二, 上石勲

    地盤工学研究発表会発表講演集(CD-ROM)　46th　ROMBUNNO.949　2011

  133. 地盤工学の今後の新たな展開 数値解析技術 －粒状体－

    前田健一, 松島亘志, 森口周二

    地盤工学会誌　58　(1)　68-69　2011/01/01

    Publisher: 地盤工学会

    ISSN： 1882-7276

  134. 近年の土地開発によって造成された地域の地震に対する脆弱性

    森口周二

    季刊文教施設　42　19-22　2011

    Publisher: 社団法人文教施設協会

  135. 模型斜面を用いた人工雪崩の流動計測

    山川大貴, 小田憲一, 森口周二, 上石勲, 八嶋厚, 沢田和秀, 町田敬

    地盤工学研究発表会発表講演集　45th　(2)　1779-1780　2010/07/15

    ISSN： 1342-2863

  136. 流体解析手法による人工雪崩実験の再現解析

    小田憲一, 山川大貴, 森口周二, 上石勲, 八嶋厚, 沢田和秀, 佐藤篤司

    地盤工学研究発表会発表講演集　45th　(2)　1781-1782　2010/07/15

    ISSN： 1342-2863

  137. Report of 4th International Young Geotechnical Engineer Conference(17th International Conference on Soil Mechanics and Geotechnical Engineering)

    58　(3)　34-34　2010/03/01

    Publisher: 社団法人地盤工学会

    ISSN： 1882-7276

  138. Simulation of artificial avalanche using bed friction

    Kenichi Oda, Daiki Yamakawa, Shuji Moriguchi, Kazuhide Sawada, Atsushi Yashima, Masaaki Isizaka, Isao Kamiishi, Takashi Machida

    Summaries of JSSI and JSSE Joint Conference on Snow and Ice Research　2010　(0)　188-188　2010

    Publisher: 公益社団法人 日本雪氷学会／日本雪工学会

    DOI： 10.14851/jcsir.2010.0.188.0 　

    ISSN： 1883-0870

    eISSN： 1883-0889

  139. Observation of Avalanche motion in Chuetsu area and Verification of Fluid Dynamics model

    Isao Kamiisi, Kenichi Oda, Shuji Moriguchi, Kazuhide Sawada, Atsushi Yashima, Takashi Machida

    Summaries of JSSI and JSSE Joint Conference on Snow and Ice Research　2010　(0)　105-105　2010

    Publisher: 公益社団法人 日本雪氷学会／日本雪工学会

    DOI： 10.14851/jcsir.2010.0.105.0 　

    ISSN： 1883-0870

    eISSN： 1883-0889

  140. 連続体モデルと離散体モデルを用いた砂の流動実験の再現解析

    小田憲一, 森口周二, 沢田和秀, 八嶋厚

    中部地盤工学シンポジウム論文集(Web)　22nd　9‐14 (WEB ONLY)　2010

  141. A Research Trend of Granular Mechanics Based on DEM

    57　(11)　38-38　2009/11/01

    Publisher: 地盤工学会

    ISSN： 1882-7276

  142. 連続体モデルによる粒状材料の流動シミュレーションにおける底面摩擦の影響

    森口周二, BORJA Ronaldo I, 八嶋厚, 沢田和秀, 小田憲一

    理論応用力学講演会講演論文集　58th　297-298　2009/06/09

    Publisher: National Committee for IUTAM

    DOI： 10.11345/japannctam.58.0.143.0 　

    More details Close

    Granular material is assumed to be the Bingham fluid, and a laboratory flow experiment of sand was reproduced in a numerical simulation based on continuum modeling. The numerical method is based on the method for two phase flow simulation. A CIP method is used for solving the advection part of governing equation of fluid motion, and a THINC method is introduced for treatment of the free surface. The internal friction angle is considered as a parameter of shear strength of the Bingham model, and an effect of bottom friction was newly introduced in the numerical method. Modeling for the bottom friction is proposed and effect of bottom friction angle is discussed by comparing based on comparison between obtained simulated results and the experimental results.

  143. Model tests for travel distance and impact force of snow avalanche

    Kenichi Oda, Atsushi Yashima, Kazuhide Sawada, Shuji Moriguchi, Daiki Yamakawa, Atsushi Sato, Isao Kamiishi, Takashi Machida

    Summaries of JSSI and JSSE Joint Conference on Snow and Ice Research　2009　(0)　211-211　2009

    Publisher: 公益社団法人 日本雪氷学会／日本雪工学会

    DOI： 10.14851/jcsir.2009.0.211.0 　

    ISSN： 1883-0870

    eISSN： 1883-0889

  144. 301 Simulation of dry sand flow considering the bottom friction

    MORIGUCHI Shuji, BORJA Ronald I, YASHIMA Atsushi, SAWADA Kazuhide, ODA Keinchi

    The Proceedings of The Computational Mechanics Conference　2009　(0)　484-485　2009

    Publisher: The Japan Society of Mechanical Engineers

    ISSN： 1348-026X

  145. Application of SPH method for large deformation analyses of geomaterials

    H. Nonoyama, A. Yashima, K. Sawada, S. Moriguchi

    Prediction and Simulation Methods for Geohazard Mitigation　227-233　2009/01/01

  146. A simple method for evaluating fragility of rock slope

    T. Sumi, A. Yashima, K. Sawada, S. Moriguchi

    Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering: The Academia and Practice of Geotechnical Engineering　2　1710-1713　2009

    DOI： 10.3233/978-1-60750-031-5-1710 　

  147. CIP法を用いた3次元雪崩流動解析モデルの実斜面への適用

    上石勲, 平島寛行, 山口悟, 佐藤篤司, 森口周二, 小田憲一, 八嶋厚, 沢田和秀, 町田敬

    寒地技術論文・報告集(CD-ROM)　25　ROMBUNNO.I-022　2009

    ISSN： 1883-3489

  148. 606 Bearing capacity analyses of cohesive ground using SPH method and CIP method

    NONOYAMA Hideto, MORIGUCHI Shuji, YASHIMA Atsushi, SAWADA Kazuhide

    The Computational Mechanics Conference　2008　(21)　257-258　2008/11/01

    Publisher: The Japan Society of Mechanical Engineers

    ISSN： 1348-026X

  149. 双曲型正接関数を用いた簡易界面追跡手法(THINC)による人工雪崩の再現解析

    小田憲一, 片岡雅貴, 五島麻希, 八嶋厚, 沢田和秀, 森口周二, 上石勲, 平島寛行, 町田敬

    地盤工学研究発表会発表講演集　43rd　799-800　2008/06/12

    ISSN： 1342-2863

  150. Fundamental research about deformation analysis of geomaterial using SPH Method

    NONOYAMA Hideto, YASHIMA Atsushi, SAWADA Kazuhide, MORIGUCHI Shuji, HUANG Yu

    Proceedings of the conference on computational engineering and science　13　(1)　215-218　2008/05/19

    Publisher: 日本計算工学会

    ISSN： 1342-145X

  151. Numerical simulation for particle-fluid interaction including free surface flow

    MORIGUCHI Shuji, AOKI Takayuki

    Proceedings of the conference on computational engineering and science　13　(2)　799-802　2008/05/19

    Publisher: 日本計算工学会

    ISSN： 1342-145X

  152. CIP法による雪崩の再現解析

    小田憲一, 八嶋厚, 沢田和秀, 森口周二, 五島麻希, 佐藤篤司, 上石勲

    計算工学講演会論文集　13　(2)　803-806　2008/05/19

    Publisher: 日本計算工学会

    ISSN： 1342-145X

  153. 1303 Development of numerical method for liquefaction problem using Immersed boundary method

    MORIGUCHI Shuji, AOKI Takayuki

    The Computational Mechanics Conference　2007　(20)　171-172　2007/11/25

    Publisher: The Japan Society of Mechanical Engineers

    DOI： 10.1299/jsmecmd.2007.20.171 　

    ISSN： 1348-026X

    eISSN： 2424-2799

  154. 斜面災害に対するジオテキスタイルを用いた補強土防護擁壁の各種実験とその効果

    吉田眞輝, 竜田尚希, 西田陽一, 井上昭一, 八嶋厚, 沢田和秀, 森口周二

    砂防学会研究発表会概要集　2007　2007

    ISSN： 2187-7696

  155. 地盤工学会論文賞を受賞して

    森口 周二, 八嶋 厚, 沢田 和秀, 渦岡 良介, 伊藤 正俊

    土と基礎 = Soil mechanics and foundation engineering　54　(9)　76-76　2006/09/01

    Publisher: 社団法人地盤工学会

    ISSN： 0041-3798

  156. CIP-based numerical simulation for large deformation problems considering the interaction between geomaterial and rigid body

    K. Sawada, S. Moriguchi, A. Yashima, M. Goshima, S. Inoue, Y. Nishida

    Proceedings of the 6th European Conference on Numerical Methods in Geotechnical Engineering - Numerical Methods in Geotechnical Engineering　713-719　2006

  157. 地盤材料の特性を活かした落石 土砂防護壁に関する実大規模実験

    森口周二

    第14回調査 設計 施工技術報告会, 2005　2005

  158. 地盤への剛体貫入に関する大変形問題への新しい試み

    森口周二

    第17回中部地盤工学シンポジウム論文集, 2005　85-92　2005

  159. CIP-based numerical analysis for large deformation of geomaterials

    2005

  160. 補強土防護擁壁の急傾斜地における性能確認試験 (その1 施工編)

    吉田真輝, 竜田尚希, 八嶋厚, 沢田和秀, 森口周二, 井上昭一, 西田陽一

    地盤工学研究発表会発表講演集　40th　2005

    ISSN： 1342-2863

  161. 補強土防護擁壁の急傾斜地における性能確認試験 (その2 結果編)

    竜田尚希, 吉田真輝, 八嶋厚, 沢田和秀, 森口周二, 井上昭一, 西田陽一

    地盤工学研究発表会発表講演集　40th　2005

    ISSN： 1342-2863

  162. CIP法を用いた築館大規模土砂流動の再現解析

    伊藤正俊, 森口周二, 八嶋厚, 沢田和秀, 渦岡良介

    地盤工学研究発表会発表講演集　39th　(0)　2185-2186　2004/06

    Publisher: The Japanese Geotechnical Society

    DOI： 10.11512/jiban.JGS39.0.2185.0 　

    ISSN： 1342-2863

    More details Close

    筆者らは、流体力学的な解析手法を用いて、地盤材料の大変形に有効な解析手法の開発を行ってきた。本研究では、これまでに高度化された流体力学的な解析手法を用いて、実際に発生した土砂流動の再現を行い、土砂の到達距離と流動速度を求める。本解析で得られた土砂の到達距離、流動速度と実現象の到達距離、流動速度とを比較し、本解析手法の精度を検証した。その結果、本解析手法が、実際に発生した土砂災害に対して適応できる可能性があることを確認した。

  163. SPH-based numerical simulation of catastrophic debris flows after the 2008 Wenchuan earthquake

    Yu Huang, Yu Huang, Hualin Cheng, Zili Dai, Qiang Xu, Fang Liu, Fang Liu, Kazuhide Sawada, Shuji Moriguchi, Atsushi Yashima

    Bulletin of Engineering Geology and the Environment　74　1137-1151　2003/11/06

    DOI： 10.1007/s10064-014-0705-6 　

    ISSN： 1435-9529

    More details Close

    © 2014, Springer-Verlag Berlin Heidelberg. Post-earthquake debris flows that have occurred in Sichuan Province in southwestern China following the Wenchuan earthquake on May 12, 2008, have caused significant damage and casualties. Previous earthquake-induced landslides produced large amounts of loose material that remained on the steep slopes and in the gullies. As a consequence of heavy rainstorms during the rainy seasons, the existing loose material was transformed into numerous debris flows. Research has shown that the debris flows in the Wenchuan earthquake disaster areas have been characterized by their large scale, high speed, long run-out, and destructive impact. In order to identify the areas potentially at risk and to predict the flow severity, an accurate numerical method is needed to simulate these debris flows. In this paper, we have proposed a smoothed particle hydrodynamics (SPH) modeling technique—a meshfree particle method—to simulate the post-earthquake debris flows in the Wenchuan earthquake disaster areas. The SPH modeling technique introduces a Bingham model to analyze the relationship between material stress rates and particle motion velocity. Compared to

  164. CIP法による液状化地盤の流動解析

    HADUSH S, 森口周二, 八嶋厚, 渦岡良介

    地盤工学研究発表会発表講演集　35th　2229-2230　2000/05

    ISSN： 1342-2863

Show all ︎Show first 5

Books and Other Publications 5

  1. 地球防災ラボ : 実験でしくみを知って、命を守る

    東北大学災害科学国際研究所

    岩崎書店　2022/09

    ISBN: 9784265059775

  2. 東日本大震災からのスタート: 災害を考える51のアプローチ

    東北大学災害科学国際研究所

    東北大学出版会　2021/03/18

    ISBN: 4861633575

  3. いまさら聞けない計算力学の定石

    土木学会応用力学委員会計算力学小委員会

    丸善出版　2020/03

    ISBN: 9784621304983

  4. 地盤・土構造物のリスクマネジメント : 地盤崩壊・液状化のメカニズムとその解析、監視、防災対策

    鳥居, 宣之

    エヌ・ティー・エス　2019/01

    ISBN: 9784860435820

  5. 落石対策工の設計法と計算例

    地盤工学会, 地盤工学会

    地盤工学会　2015/02/01

    ISBN: 4886440975

Presentations 40

  1. Impact Force Evaluation in 2D Debris Flow Simulations Based on Steep-Slope Shallow Water Equation International-presentation

    Reika Nomura, So Fujisawa, Nilo L Dolojan, Shuji Moriguchi, Antonia Larese, Kenjiro Terada

    HYDROROM 2026 workshop　2026/02/26

  2. Strain-rate dependent shear resistance model for debris flow simulations in 2D shallow water equation

    Reika Nomura, Chiho Otsuka, Soma Hidano, Nilo Lemuel Dolojan, Shuji Moriguchi, Takeshi Kodaka, Kenjiro Terada

    The 4th International Conference on Computational Engineering and Science for Safety and Environmental Problems (COMPSAFE2025)　2025/07/03

  3. 数値シミュレーションとデータサイエンスの融合による津波リスク評価技術の開発 Invited

    Reika Nomura, Shuji Moriguchi, Kenjiro Terada

    2025/06/24

  4. Strain rate dependent shear resistance models for 2D shallow water type debris flow simulations

    2025/06/04

  5. インクルーシブ防災と数値シミュレーション

    Reika Nomura, Shuji Moriguchi, Kenjiro Terada

    Sendai Bosai Mirai Forum 2024　2024/03/09

  6. 急勾配斜面を対象とした2次元浅水長波解析による土石流の衝撃力評価

    藤沢 颯, Nilo Doloja, 野村 怜佳, 寺田 賢二, 森口 周二

    令和 7 年度 土木学会東北支部技術研究発表会　2026/03/07

  7. 片方向流体・構造連成解析手法の構築による樹木の対流体力挙動評価

    武田 万有花, 鈴木 祐太, 中村 明莉, 野村 怜佳, 松原 成志朗, 寺田 賢二郎, 森口 周二

    令和 7 年度 土木学会東北支部技術研究発表会　2026/03/07

  8. 数値解析と観測を融合した地震力による斜面崩壊の広域即時予測

    小島 空, 松田 晃汰, 湯 東暘, 須郷 大地, 野村 怜佳, 寺田 賢二郎, 森口 周二

    令和 7 年度 土木学会東北支部技術研究発表会　2026/03/07

  9. 3D LEM-Based Regional-Scale Slope Stability Analysis

    Shuji Moriguchi

    Workshop on Modeling and Simulation of Extreme Events　2026/02/26

  10. 3D LEM-Based Regional-Scale Slope Stability Analysis Invited

    Shuji Moriguchi, Daichi Sugo, John, Y. Choe, Kenta Tozato, Nilo Lemuel, J. Dolojan, Reika Nomura, Kosuke Watanabe, Kenjiro Terada

    The 5th International Symposium on Slope Risk and Resilience　2026/02/08

  11. 力学に基づくシミュレーションによる広域を対象とした災害リスク評価 Invited

    森口周二

    SSLアンカー工法・Q&Sフレーム工法技術講習会　2025/12/11

  12. 地震力の空間分布を考慮した極限平衡理論に基づく広域を対象とする三次元斜面安定解析

    松田 晃汰, 須郷 大地, 野村 怜佳, 寺田 賢二郎, 大野 晋, 森口 周二

    令和７年度土木学会全国大会　2025/09/12

  13. MPM-FEMハイブリッド法による土堤浸透過程の再現解析

    鈴木 祐太, 菅井 理一, 飛彈野 壮真, 野村 怜佳, 森口 周二, 小高 猛司, 寺田 賢二郎

    令和７年度土木学会全国大会　2025/09/12

  14. 個別要素法のためのベンチマーク問題の適切な計算条件の探索

    吉川 大陽, XIAO JUNSE, 野村 怜佳, 寺田 賢二郎, 森口 周二

    令和７年度土木学会全国大会　2025/09/12

  15. 量子フーリエ変換を用いた均質化解析

    飯塚 聡, 我妻 航也, 中村 明莉, 野村 怜佳, 森口 周二, 寺田 賢二郎

    令和７年度土木学会全国大会　2025/09/12

  16. A Study on the Optimal Calculation Setup for a Benchmark Problem Designed for the Discrete Element Method

    S. Moriguchi, T. Yoshikawa, M. Otsubo, A. Oya, A. Kono, M. Taue, H. Saomoto, S. Kajiyama, N. Kikkawa, D. Takano, Y. Nakata, J. Yamaguchi

    The 10th International Conference on Discrete Element Methods　2025/07/04

  17. Enhanced semi-implicit MPM for seepage slope failure analysis

    Soma Hidano, Reika Nomura, Shuji Moriguchi, Kenjiro Terada

    the 4th International Conference on Computational Engineering and Science for Safety and Environmental Problems (COMPSAFE2025)　2025/07/02

  18. Sequential updating of building fragility functions through large-scale seismic simulations and sensor integration

    Dongyang Tang, Sukulthanasorn Naruethep, Reika Nomura, Kazuya Nojima, Atsushi Mori, Susumu Ohno, Jia Guo, Seiichi Sato, Shuji Moriguchi, Masaaki Sakuraba, Kenjiro Terada

    the 4th International Conference on Computational Engineering and Science for Safety and Environmental Problems (COMPSAFE2025)　2025/07/03

  19. Multihazard framework for regional-scale simulation of rain-induced flood and landslide disasters

    Nilo Lemuel Junio Dolojan, Takayuki Takahashi, Masakazu Hashimoto, Akihiro Shibayama, Reika Nomura, Kenjiro Terada, Shuji Moriguchi

    the 4th International Conference on Computational Engineering and Science for Safety and Environmental Problems (COMPSAFE2025)　2025/07/03

  20. Large-area Slope Stability Analysis using Three-dimensional Limit Equilibrium Method with Ellipsoidal Slip Surfaces and Particle Swarm Optimization

    Daichi Sugo, John Yeonjun Choe, Kenta Tozato, Reika Nomura, Kenjiro Terada, Kosuke Watanabe, Shuji Moriguchi

    The 4th International Conference on Computational Engineering and Science for Safety and Environmental Problems (COMPSAFE2025)　2025/07/04

  21. Extended B-spline-based mixed implicit material point method stabilized by variational multiscale method International-presentation

    Riichi Sugai, Reika Nomura, Shuji Moriguchi, Kenjiro Terada

    The 4th International Conference on Computational Engineering and Science for Safety and Environmental Problems (COMPSAFE2025)　2025/07/04

  22. 数値シミュレーションによる斜面災害のリスク評価 Invited

    森口 周二

    補強土植生のり枠工協会技術講習会2025　2025/06/20

  23. Investigation of the applicability of quantum singular value transformation as a linear solver for the finite element method in structural analysis

    2025/06/04

  24. Application of u-p mixed formulation stabilized by variational multiscale (VMS) method in implicit MPM

    2025/06/04

  25. Seepage Failure Analysis by Semi-implicit MPM with Weighted Least Square B-spline Shape Function

    2025/06/04

  26. Three-Dimensional Multiscale Analysis Using RBF-Based Surrogate Homogenization Model at Finite Strain

    2025/06/04

  27. Fundamental Studies for Rainfall Induced Slope Failure Analysis with Switching Explicit and Implicit MPM

    2025/06/04

  28. Fluid-structure Interaction Analysis using Co-rotational Finite Element Method and Lattice Boltzmann Method

    2025/06/04

  29. Application of a Three-Dimensional Limit Equilibrium Method Based on Ellipsoidal Slip Surfaces and Particle Swarm Optimization to Large-Area Slope Stability Analysis

    2025/06/04

  30. Quantification of the impact of historical land use changes on disaster risk using numerical simulations

    2025/06/04

  31. Sequential Fragility Updates for City-Scale Seismic Assessments Using Numerical Simulations and Sensor Data

    Dongyang Tan, Naruethep Sukulthanasor, Reika Nomura, Kazuya Nojim, Atsushi Mori, Susumu Ohno, Jia Guo, Seiichi Sato, Shuji Moriguchi, Masaaki Sakurab, Kenjiro Terada

    2025/06/04

  32. 個別要素法のためのベンチマーク問題の適切なパラメータの検証

    吉川 大陽, XIAO JUNSE, 野村 怜佳, 寺田 賢二郎, 森口 周二

    第28回応用力学シンポジウム　2025/05/16

  33. 地震力の空間分布を考慮した極限平衡理論に基づく 三次元広域斜面安定解析

    松田 晃汰, 須郷 大地, 野村 怜佳, 寺田 賢二郎, 森口 周二, 大野 晋

    第28回応用力学シンポジウム　2025/05/16

  34. 計算固体力学における線形ソルバーとしての量子特異値変換の適用性に関する基礎的検討

    我妻 航也, 野村 怜佳, スクタナソーン ナルテープ, 森口 周二, 寺田 賢二郎

    第28回応用力学シンポジウム　2025/05/16

  35. 有限変形の代理均質化モデルを用いたマクロ構造のトポロジー最適化

    中村 明莉, 山中 耀介, Sukulthanasorn Naruethe, 野村 怜佳, 森口 周二, 寺田 賢二

    第28回応用力学シンポジウム　2025/05/17

  36. Weighted Least Square B-spline 形状関数を採用した半陰的 MPM による不飽和地盤解析

    飛彈野 壮真, 野村 怜佳, 森口 周二, 寺田 賢二郎

    第28回応用力学シンポジウム　2025/05/17

  37. VMS法を用いたu-p混合定式化を適用した陰的MPMによる超弾性体の解析

    菅井 理一, 野村 怜佳, 森口 周二, 寺田 賢二郎

    第28回応用力学シンポジウム　2025/05/17

  38. MPM-FEMハイブリッド法による地盤透水現象の再現解析

    鈴木 祐太, 菅井 理一, 飛彈野 壮真, 野村 怜佳, 森口 周二, 小高 猛司, 寺田 賢二郎

    第28回応用力学シンポジウム　2025/05/17

  39. 量子フーリエ変換を用いた均質化法に基づくマルチスケール解析

    飯塚 聡, 我妻 航也, 中村 明莉, 野村 怜佳, 森口 周二, 寺田 賢二郎

    第28回応用力学シンポジウム　2025/05/17

  40. 構造解析における量子アニーリングの適用性に関する検討

    我妻航也, 肖珺森, 山中耀介, 野村怜佳, スクンタナソーン, ナルテープ, 村松 眞由, 森口 周二, 寺田 賢二郎

    令和５年度土木学会東北支部 技術研究発表会　2023/03/02

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Research Projects 29

  1. Upgrading of river embankments from "resilient" to "non-collapsible" and its realization by elucidating the piping phenomenon

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Meijo University

    2025/04/01 - 2029/03/31

  2. Evaluation of past and present regional characteristics related to heavy rainfall disasters based on historical and engineering perspectives

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Challenging Research (Exploratory)

    Institution: Tohoku University

    2025/06/27 - 2028/03/31

  3. A novel approach for risk reduction of heavy rain disaster using a digital shadow with physics-based modeling

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    2024/04 - 2028/03

  4. High-definition Virtualization of sediment disaster by highly accurate and efficient numerical simulation

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    2022/04/01 - 2026/03/31

  5. Development of benchmarks for validating geotechnical discrete element method through international round robin test

    Nakata Yukio

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: Yamaguchi University

    2022/04/01 - 2025/03/31

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    An international round robin test was conducted to reproduce the results of angle of repose experiments using artificial particles. A notable feature of this activity was the use of 3D-printed particles as test materials. Another notable feature was the presentation of two methods for measuring the angle of repose in the field of geotechnical engineering. A further important feature was that participants conducted simulations without referring to the experimental results. The outcomes included the compilation of experimental and analytical data on the angle of repose and the collection of benchmark information through sensitivity analysis of the DEM input parameters used in the analysis. Additionally, the theme for the second round-robin test was established.

  6. Formulation of stability evaluation and countermeasure methods for artificial ground consisted by quasi-clay fine particle soils weakening during natural disasters

    Kodaka Takeshi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Meijo University

    2020/04/01 - 2025/03/31

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    Focusing on artificial ground composed of 'pseudo-clay fine-grained soils,' which differ in mechanical properties from cohesive soils owing to a higher fine particle content, this study elucidated the failure mechanisms associated with two types of disasters -heavy rainfall and earthquakes - and examined prediction and countermeasure methods. For seepage, the mechanism of seepage-induced slip failure was clarified through model tests, and effective countermeasures were proposed. In addition, a new water absorption softening test method was developed to establish a means of evaluate the resistance of pseudo-clay fine-grained soils to seepage-induced slip failure. Regarding earthquakes, the study examined the cyclic damage parameters of pseudo-clay fine-grained soils and proposed a highly accurate method for predicting the cyclic softening behavior during seismic events. Furthermore, this study clarified the influence of soil structures formed by fine contents on liquefaction.

  7. Formulation of stability evaluation and countermeasure methods for artificial ground consisted by quasi-clay fine particle soils weakening during natural disasters

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Meijo University

    2020/04/01 - 2025/03/31

  8. クラスタリングとベイズ更新を援用した力学に基づく広域斜面安定解析

    森口周二, 野村怜佳, 寺田賢二郎

    Offer Organization: 中部電力株式会社

    System: 中部電力原子力安全技術研究所公募研究（一般）

    Institution: 東北大学

    2024/04 - 2025/03

  9. Slope stability analysis during heavy rain that directly solve different spatial scales of a single slope and a wide area

    Moriguchi Shuji

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2021/04/01 - 2024/03/31

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    A framework for wide-area slope stability analysis based on the limit equilibrium theory was developed for risk assessment of slope failures caused by heavy rainfall. This framework demonstrates the usefulness of mechanics-based numerical analysis. Additionally, using the framework, the influence of the accuracy of input data and computational conditions on the simulated results was quantified. The results showed that the accuracy of soil parameters have a greater impact on the results than the difference in numerical methods, and that the difference in analysis methods had a similar effect by changing the threshold value of the factor of safety.

  10. Innovative CFD simulation for multiphase flows including free surfaces

    Aoki Takayuki

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (S)

    Institution: Tokyo Institute of Technology

    2019/06/26 - 2024/03/31

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    We developed two types of innovative simulation codes for multiphase flows, which drastically improve computational efficiency on GPU supercomputers by implementing weakly compressible fluid computation schemes and Adaptive Mesh Refinement (AMR) methods. In simulations of flows containing driftwood, we revealed the mechanisms of driftwood trapping and accumulation during river flooding. In simulations of liquid film and foam generation and collapse, we clarified the stability and rupture processes of liquid films and successfully simulated the formation of quasi-stable foams. Accurate computation of surface tension and contact angle enabled us to clarify the flow properties of powders containing solvents. We conducted simulations over a wide range of scales, from micrometers to kilometers, that had not been previously explored.

  11. An interdisciplinary stochastic tsunami disaster prediction accelerated by a surrogate model

    Asai Mitsuteru

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Kyushu University

    2020/04/01 - 2023/03/31

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    An entire series of physics simulations for earthquakes and tsunamis have been developed so far, starting from earthquake scenarios (seismology), through tsunami generation (tsunami science), propagation (tsunami engineering), and prediction of damage to structures and other objects due to run-up to the surface (structural engineering, geotechnical engineering, and earthquake engineering) (across a number of disciplines). We have enhanced the functionality of the interdisciplinary tsunami analysis code. The four main development items are as follows. 1. probabilistic damage prediction technology based on surrogate models, 2. coupled water-soil-structure analysis, 3. structural collapse analysis, and 4. tools for immediate tsunami prediction on a PC-level computer.

  12. Research on digital archives of natural disasters leading to support during disasters

    shibayama akhiro

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2020/04/01 - 2023/03/31

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    In this study, in order to convert digital archives into "natural hazard digital archives" that can be utilized in times of disaster, this study clarified how to add information and metadata information necessary for disaster response, and how to present similarities and differences in disaster response to the users. A pilot system for a new digital archive of natural disasters was developed to support the work of local governments and disaster management agencies during disasters.

  13. Comprehensive study on wide-area disasters due to typhoon no.19 and 21 in 2019

    Nihei Yasuo

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Special Purposes

    Institution: Tokyo University of Science

    2019/12/04 - 2023/03/31

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    This study aims to clarify the damage situation and mechanism of wide-area disasters caused by Typhoon no. 19 and Typhoon no. 21 (low pressure) in 2019. In this study, we conducted five themes: 1) the meteorological phenomenon of heavy rain and runoff caused by typhoons and low pressure systems, 2) the mechanism of flood disasters over a wide area, 3) the mechanism of frequent landslide disasters and soil structure destruction, 4) the actual damage caused by storm surges, wave and strong wind, and 5) the actual situation of residents' evacuation behavior. A report on these results was prepared and published, and proposals for future disaster countermeasures were compiled in the report.

  14. Numerical simulation of ground motion by synthesized representation of transition between solid and liquid

    Terada Kenjiro

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    2019/04/01 - 2022/03/31

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    We develop a semi-implicit MPM to properly express the mechanical behavior of unsaturated soil based on Biot's mixture theory. The new contribution of this study is the incorporation of the fractional-step method into the MPM to solve the pore water pressure implicitly, which improves the numerical stability and computational efficiency. Moreover, the time increment can be determined without considering the magnitude of water permeability because the interaction between solid and liquid phases is evaluated using the intermediate velocity. Several numerical examples are presented to demonstrate the capability and performance of the proposed method for analyses of unsaturated soils. In particular, a validation analysis is carried out using a model experiment of infiltration-induced landslide.

  15. An example of Specific V&V for slope disaster simulations

    Moriguchi Shuji

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2018/04/01 - 2021/03/31

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    It’s generally difficult to discuss the accuracy and reliability in disaster simulations. On the other hand, recently, V&V (Verification & Validation) of numerical simulations has been emphasized and widely discussed. The purpose of this study is to develop the information that are necessary for V&V of rockfall analysis and sediment flow analysis using the discrete element method (DEM). Specifically, information on the following three topics was studied based on the results of DEM analysis: setting up benchmark problems, quantification of the effect of uncertainties in DEM simulations, and frameworks for reducing computational cost.

  16. Reliable deformation analysis based on verification and validation of numerical method

    Uzuoka Ryosuke

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    2016/04/01 - 2020/03/31

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    A numerical analysis was validated for shear and consolidation deformation of clay ground base on uncertainty quantification referring ASME V&V10.1 (2012). The numerical analysis is a soil-water coupled analysis on finite deformation porous media theory. First, centrifugal experiments with the established conditions were performed, and probability distributions of deformation of clay ground were obtained. Second, some triaxial tests with the established conditions were performed, and some elasto-plastic material parameters were assumed as normal distributions from the test results. Third, numerical analyses simulated the centrifugal experiments of clay ground deformation using the uncertainty of elasto-plastic parameters and the embankment load. By comparing the experimental and numerical results, the uncertainty quantification of clay ground deformation and validity of numerical method were discussed.

  17. Development of multiscale multi-physics rock mechanics for swelling rock mass

    Kyoya Takashi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    2016/04/01 - 2020/03/31

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    In order to resolve the problem of deterioration of underground structures after construction due to swelling of rock mass we have developed a new multiscale multi-physics rock mechanics approach. We carried out laboratory swelling tests of montmorillonite and formulated a thermodynamics model for the swelling behavior. We also formulated a numerical analysis model based on the modified Cam-Clay model that can predict deteriorating strength and stiffness of rock mass along with a rigorous return-mapping algorism. Then we developed a multiscale multi-physics analysis model for swelling rock mass by Incorporating the thermodynamics swelling model into the Cam-Clay type model. A series of analyses of a tunnel within a swelling rock mass predicted displacement and stress distribution around the tunnel in good agreement with measured data. We conclude therefore the validity and effectiveness of this proposed multiscale multi-physics rock mechanics theoretical model.

  18. Method of multistage failure simulation for disaster risk evaluation

    Terada Kenjiro

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    2016/04/01 - 2019/03/31

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    Based on the co-rotational formulation to deal with large displacements and rotations of a solid, we propose a method of multi-stage failure simulation of brittle materials and structures involving dynamic frictional-contact behavior. In order to simulate dynamic behavior of the structure, we adopted mid-point algorithm along with energy-momentum method. Also, we employed the penalty method to represent the brittle fracture due to gluing/separation of the elements, and the augmented Lagrange method to consider the frictional contact effects. Verification tests were conducted for the formulation with a simple structure subjected to the large displacements and rotations. Also, some simple numerical examples were presented to demonstrate the capability of the proposed method to simulate the multi-stage failure process.

  19. Advancement of HPC Applications for Manufacturing Technology to Exascale

    Aoki Takayuki, ONODERA Naoyuki, NUKADA Akira, ENDO Toshio

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (S)

    Institution: Tokyo Institute of Technology

    2014/05/30 - 2019/03/31

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    In exascale supercomputers which have relatively poor memory bandwidth and low inter-node connection speed to computational performance, applications of manufacturing technology have revolutionary changes to minimize “Time-to-Solution” by introducing new numerical methods and innovative numerical algorithms. Explicit schemes, Adaptive Mesh Refinement (AMR) method and dynamic load balance extremely improve the “Time-to-Solition”and computational scales of these exascale applications for fluids, materials and particles. We have a strong confidence on execution of exascale applications for manufacturing technology.

  20. Investigation of the surface avlanche at Mt. Nasu on 27 March, 2017

    Kamiishi Isao, MATSUURA Sumio, KATSUSHIMA Takafumi, HASHIMOTO Akihiro, ARAKI Kentaro, IWANAMI Koyuru, SUZUKI Shin-ichi, KOSUGI Kenji, YAMAGUCHI Satoru, MOTOYOSHI Hiroki, HIRASHIMA Hiroyuki, ITO Yoichi, ABE Osamu, ADACHI Satoru, SUZUKI Hinako, ABE Naoki, ABE Mikio, IYOBE Tsutomu, KIEDA Kaori, SAKAMIBARA Kenichi, SATO Kengo, SHIMIZU Shingo, SETANI Oziro, MAESAKA Tsuyoshi, YOSHIKAWA Chisato, WATABE Syun

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Special Purposes

    Institution: National Research Institute for Earth Science and Disaster Prevention

    2017/04/13 - 2018/03/31

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    We investigated the surface avalanche at Mt. Nasu on 27 March, 2017, which killed 8 people including 7 high school students. We found that the weak layer causing the avalanche consisted of no-rimed fallen crystal associated with the cyclone system and heavy snowfall amount on the weak layer triggered the avalanche. Our statistical analyses indicated that the similar heavy snowfall events occur about one every 19 years in March. Using the avalanche dynamics model, we infered the starting point of the avalanche which could not be determined by the field observation. We also make the database of avalanche history in the area and developed the forecasting system of avalanche caused by the cyclone system.

  21. Explicit calculation conditions to guarantee the validity of rockfall simulations

    Moriguchi Shuji

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Young Scientists (B)

    Institution: Tohoku University

    2014/04/01 - 2017/03/31

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    The criteria of calculation conditions and the information of input parameters for rockfall simulations are analyzed from the viewpoint of engineering. Obtained knowledges can be used as basic information for numerical simulations in rockfall disaster prevention. Based on the obtained information, a real rockfall was reproduced to validate the availability of the information. Furthermore, a new method for probabilistic rockfall risk analysis based on numerical simulations was proposed.

  22. A study on mechanism of the generation of pore-air pressure and its resulting the pore-air blow phenomena in the river dike during heavy rainfall

    KAMIYA Kohji, MORIGUCHI Shuji

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: Gifu University

    2013/04/01 - 2016/03/31

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    It has been pointed out that the pore-air blow off from the surface of river dike during heavy rainfall. It is therefore important to consider the influence of the pore-air blows on the slope stability of the dike. In this research, based on the laboratory water infiltration experiment in one-dimension, the pore-air behavior during the wetting process in unsaturated soil was considered and the adaptability of the geotextile on prevention of the pore-air blows was examined. As a result, it was found that the pore-air pressure in the soil with the hydraulic conductivity of 10-3cm/s was generated by the seepage of river water when the air permeability at near the surface was reduced by the rainfall. It was observed that the local crack in the soil occurred due to the larger pore-air pressure. And then, the pore-air blows was prevented in while keeping the air permeability at near the surface by laying the geotextile at the ground surface.

  23. Multi-scale numerical experiments for mechanical interaction between tsunami run-up and structures

    Terada Kenjiro, KASHIYAMA KAZUO, ASAI MITSUTERU, KURUMATANI MAO, MORIGUCHI SHUJI, KATO JUNJI, TAKASE SHINSUKE

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    2013/04/01 - 2016/03/31

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    Unexplained mechanisms of interaction between fluids and solids often causes unpredictable and extensive damages into human lives as well as structures. In this study, focusing our attention to tide-protection forests against tsunami energies, we propose a method of multiscale numerical experiments for evaluating their disaster-reduction characteristics. For that purpose, we introduced a hierarchical way, a tide-protection forest is stratified into three spatial scales; branch-scale, tree-scale and forest-scale. A tide-protection forest is assumed to be porous media and we identify its porous term as reduction characteristics. Several cases of lower-scale analyses are carried out with different initial and boundary conditions to construct a response surface of the overall resistances at the upper-scale. Thus, with this information about the porous medium's characteristics, a whole costal region can be a analysis target to make a risk assessment for structures behind the forest.

  24. ものづくり流体アプリケーションのエクサスケールへの進化

    青木 尊之, 高木 知弘, 滝沢 研二, 森口 周二, 下川辺 隆史

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 基盤研究(A)

    Institution: 東京工業大学

    2014/04/01 - 2015/03/31

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    エクサスケールのスパコンにおいて、ものづくりを革新的に発展させるアプリケーションを開発するためには、既存のアプリケーションから根底から作り直す必要がある。所望する計算結果を得るまでの時間「Time to Solution」を最重要視した新しい陽的時間積分に基づいた数値計算手法と計算アルゴリズムを導入する研究を進めた。 数値計算手法（離散化）に関して陰解法から陽解法、低次精度から高次精度空間離散化、非構造格子から局所的に均一な構造格子等への転換を行い、一方で計算アルゴリズムに対して、① データ移動の最小化、② 演算密度の向上、③ ノード間通信を隣接通信に限定等を行う。さらに詳細なパフォーマンス・モデルを構築し、エクサスケールの問題規模において高い実行性能を確実に達成する。手本となる流体アプリケーションの成功例を示し、ものづくり分野への大きな貢献を目的として研究に着手した。 計算アルゴリズムの検討において、完全陽解法にすることで、ペタスケールの格子系アプリケーションで導入してきた演算と通信のオーバーラップによる通信時間の隠ぺいが計算の殆どの部分で可能になることを確認した。さらに、方向分離を双曲型方程式にTemporal Blockingによる時間積分方向のデータ再利用にキャッシュの利用を促進する計算アルゴリズムを導入を検討した。 この段階で本基盤研究(A)を包含する基盤研究(S)の採択が決定し、以降の研究遂行を基盤研究(S)で行うこととした。

  25. a study on soil-snow mixed snow avalanche induced by earthquake in snowy area

    KAMIISI isao, MORIGUCHI Shuji, ODA Kenichi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: National Research Institute for Earth Science and Disaster Prevention

    2012/04/01 - 2015/03/31

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    Soil-snow mixed avalanches are easy to occur in winter on the collapsed slopes induced by the North Nagano prefecture Earthquake on March 2011 and heavy rain fall on 2011 and 2012. We have experimented soil-snow mixed snow avalanche on 5m slope in low -10℃ temperature room and outside, and observed flow length and flow velocity. We founded that dry snow flow longer than wet snow. By changing of mixing ratio of soil and snow, soil-mixed flow change different flow behavior. We simulated soil-snow mixed flow by two phase liquid model. We simulate the snow avalanche flow of avalanche on slopes.

  26. Development of a numerical tool for soil-water direct simulation

    MORIGUCHI Shuji

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Young Scientists (B)

    Institution: Gifu University

    2010 - 2012

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    A numerical method was developed based on discrete modeling and computational fluid dynamics for direct numerical simulation of soils. A numerical framework for the fluid simulation including many particles with complex shape was developed. Then, the numerical framework was applied to a permeability simulation of saturated soil, and obtained results were validated using empirical equations proposed in the past. Although this study didn’t reach to quantitative numerical simulations of unsaturated soils, potential of the direct numerical simulation was confirmed.

  27. Applicability limit of high accuracy simulation for rock-fall and debris-flow using several numerical methods.

    SAWADA Kazuhide, MAEDA Kenichi, KOBAYASHI Yoshikazu, MORIGUCHI Syuji, AOKI Takayuki

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Gifu University

    2010 - 2011

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    Applicable problems and applicable scopes of numerical methods(DEM, CFD, MPS and SPH) that are used in the field of geo-mechanics are summarized. First, allocable scopes of numerical methods are figured out based on deformation levels and types. Then, suitable numerical methods for each geotechnical problems, mainly focused on rockfalls and soil failures, were figured out. In addition, the numerical methods were applied to some engineering problems and important points were summarized from the point of view of engineering utilization.

  28. Wide and detailed investigation of erosion and it is research of Natural symbiosis measurement in Ocher Plateau in China

    SAWADA Kazuhide, MORIGUCHI Shuji

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Gifu University

    2008 - 2010

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    By the desertification of Ocher Plateau in China, it has been a problem that the yellow dust is carried and affect air environment of Japan. In order to reduce the environmental impact, a new type natural symbiosis protective wall using geo-synthetics and local geo-material is also proposed. Moreover, Advanced Land Observation Satellite (ALOS named Daichi) is utilized for making the three dimensional ground shape by PRISM sensor. Furthermore, in order to detect the accurate movement of the target ground, the Synthetic Aperture Radar : PALSAR sensor is used. Finally, a scheme to make a 3D ground data and to store and use for the database on GIS is proposed.

  29. 微視的構成材料の大規模直接計算による地盤の統一的変形解析

    森口 周二

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 特別研究員奨励費

    Institution: 東京工業大学

    2007 - 2009

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    粒子流体連成解析プログラムの3次元化、および地盤材料の変形解析への適用可能性について調べた。検証として、はじめに、1個の粒子と流体との相互作用シミュレーションを行った。空気中から水中へと粒子を落下させ、粒子に作用する浮力の影響について調べた。解析結果は、粒子に作用する浮力の影響を精度よく表現しており、粒子の運動に伴う自由表面の振動が表現されており、粒子と流体の相互作用が正しく計算されていることを確認した。また、複数個の粒子が存在するケースも同様に解析を行い、複数個の粒子が互いに接触するような複雑条件場であっても、粒子と流体の相互作用を正しく表現され、計算が安定に進むことが確認された。さらに、複雑形状を有する物体の取り扱いも可能となるように、相互作用の計算手法を拡張している。また、地盤材料の変形解析に対する有効性を検証するために、砂の透水試験のシミュレーションを行った。立方体の中に直径1mmの粒子を敷き詰め、1方向に圧力勾配を生じさせることにより、水で飽和した砂の中の間隙水の流れを解析で表現した。圧力勾配を与えた方向では、間隙水の流入と流出を自由とし、間隙水の流出量を出力した。解析結果はダルシー則を満足するものであり、また、解析結果ら得られた透水係数も、砂の透水係数の値として妥当な数値であることが確認された。この結果は、粒子流体連成解析による地盤材料の直接計算への可能性を示唆するものであり、土粒子と間隙流体による相互作用のミクロ情報を詳細に調べることが可能になると考えられる。

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Teaching Experience 11

  1. 耐震工学　東北大学

  2. 応用線形代数学　東北大学

  3. 振動解析学　東北大学

  4. 数値解析　東北大学

  5. 非均質材料の力学　東北大学

  6. 情報基礎B　東北大学

  7. 情報処理演習　東北大学

  8. 土質力学Ⅱ　岐阜大学

  9. 防災科学　岐阜大学

  10. 応用地盤工学　岐阜大学

  11. 土木工学実験　岐阜大学

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Other 4

  1. 秋田・岩手豪雨災害被害調査

  2. 東北地方太平洋沖地震による内陸部の被害調査

  3. 長野県北部地震被害調査

  4. 7月15日豪雨災害における岐阜県加茂郡の土砂災害被害調査