RYOTA HASHIMOTO

Last Updated :2021/04/06

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Associate Professor
Web Site
http://www.civil-hu.jp/geotech/
https://www.researchgate.net/profile/Ryota_Hashimoto2
E-mail
ryotahashimotohiroshima-u.ac.jp

Basic Information

Major Professional Backgrounds

  • 2014/04/01, 2017/03/31, Kyoto University, Department of Urban Management, JSPS Research Fellow (DC1)
  • 2017/04/01, 2020/03/31, Hiroshima University, Graduate School of Engineering, Assistant Professor
  • 2020/04/01, 2021/03/31, Hiroshima University, Graduate School of Advanced Science and Engineering, Assistant Professor
  • 2021/04/01, Hiroshima University, Graduate School of Advanced Science and Engineering, Associate Professor

Educational Backgrounds

  • Kyoto University, Faculty of Engineering, Undergraduate School of Global Engineering, Japan, 2008/04, 2012/03
  • Kyoto University, Graduate School of Engineering, Department of Urban Management (Master's course), Japan, 2012/04, 2014/03
  • Kyoto University, Graduate School of Engineering, Department of Urban Management (Doctoral course), Japan, 2014/04, 2017/03

Educational Activity

  • 【Bachelor Degree Program】School of Engineering : Cluster 4(Civil Engineering and Architecture)
  • 【Master's Program】Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Civil and Environmental Engineering Program
  • 【Doctoral Program】Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Civil and Environmental Engineering Program

Affiliated Academic Societies

Educational Activity

Course in Charge

  1. 2021, Undergraduate Education, 4Term, Soil Mechanics
  2. 2021, Undergraduate Education, 4Term, Exercise of Soil Mechanics
  3. 2021, Undergraduate Education, 1Term, Exercise of Surveying
  4. 2021, Undergraduate Education, 2Term, Experiments in Civil and Environmental Engineering
  5. 2021, Undergraduate Education, 3Term, Design of Infrastructures
  6. 2021, Graduate Education (Master's Program) , First Semester, Civil and Environmental Engineering Research IIB
  7. 2021, Graduate Education (Master's Program) , First Semester, Civil and Environmental Engineering Seminar　IIB
  8. 2021, Graduate Education (Master's Program) , 1Term, Special Exercises on Civil and Environmental Engineering A
  9. 2021, Graduate Education (Master's Program) , 2Term, Special Exercises on Civil and Environmental Engineering A
  10. 2021, Graduate Education (Master's Program) , 3Term, Special Exercises on Civil and Environmental Engineering B
  11. 2021, Graduate Education (Master's Program) , 4Term, Special Exercises on Civil and Environmental Engineering B
  12. 2021, Graduate Education (Master's Program) , Academic Year, Special Study on Civil and Environmental Engineering

Research Activities

Academic Papers

  1. Application of coupled elasto-plastic NMM-DDA procedure for stability analysis of Prasat Sour Prat N1 Tower, Cambodia, Geosystem Engineering, 16(1), 62-74, 20130325
    Link to Paper Search Results by DOI
  2. Stability analysis of masonry structure in Angkor ruin considering the construction quality of the foundation, Journal of Civil Engineering Research, 4(3A), 78-82, 201402
    Link to Paper Search Results by DOI
  3. Development of an enhanced elasto-plastic NMM-DDA with node-based element and its validation, Japanese Geotechnical Journal, 11(2), 163-177, 20160630
    Link to Paper Search Results by DOI
  4. Numerical study on the bearing capacity of masonry platform with different number of layers, Japanese Geotechnical Society Special Publication, 5(2), 44-49, 201701
    Link to Paper Search Results by DOI
  5. ★, Method of deformation analysis for composite structures of soils and masonry stones, Computers and Geotechnics, 82, 67-84, 201702
    Link to Paper Search Results by DOI
  6. Damage situation of stone walls in Kumamoto Castle caused by the 2016 Kumamoto Earthquake, Safety Science Review, 7, 87-95, 201703
  7. A study on the bearing capacity characteristics of masonry structure foundation in Angkor, Cambodia, Jiban to Kensetsu, 35(1), 137-144, 201712
  8. Development of soil-water coupled NMM-DDA considering unsaturated seepage, Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)), 73(2), I_199-I_210, 20180131
    Link to Paper Search Results by DOI
  9. Sealing geomaterial for coastal disposal facility using marine clay with the addition of a small amount of cement, International Journal of GEOMATE, 15(51), 132-139, 201806
    Link to Paper Search Results by DOI
  10. Development of stability evaluation methods for soil-masonry structure interactive problems and application to historic structures, International Journal of Japanese Society for Rock Mechanics, 14(1), 11-12, 201807
    Link to Paper Search Results by DOI
  11. Damage analysis of stone walls of Kumamoto castle due to the 2016 Kumamoto earthquake, Journal of Japan Society for Natural Disaster Science, 37(特別), 1-16, 201810
  12. Regional characteristics of the geodisasters： Hiroshima area, part 1, Geotechnical Engineering Magazine, 67(7), 10-13, 20190701
  13. Regional characteristics of the geodisasters： Hiroshima area, part 2, Geotechnical Engineering Magazine, 67(7), 14-17, 20190701
  14. Development of discontinuous deformation analysis (DDA) with an implicit integration algorithm of friction law, Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering), 75(3), 336-348, 20190820
    Link to Paper Search Results by DOI
  15. Stability analysis of underground space with discontinuous planes using a four node iso-parametric element numerical manifold method with rigid body rotation, Tunnelling and Underground Space Technology, 92, 201910
    Link to Paper Search Results by DOI
  16. Particle size effect of basic oxygen furnace steel slag in stabilization of dredged marine clay, Soils and Foundations, 59(5), 1385-1398, 201910
    Link to Paper Search Results by DOI
  17. Expansion characteristic of steel slag mixed with soft clay, Construction and Building Materials, 227, 20191210
    Link to Paper Search Results by DOI
  18. Characteristics of landslide disaster in Hiroshima prefecture due to torrential rains on July, 2018 (comparison with 6.29, 1999 and 8.20, 2014 landslide disasters), Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), 75(1), 244-259, 20191220
    Link to Paper Search Results by DOI
  19. A study on physical and mechanical properties for soft to firm clays in Yangon area – properties of clays deposit at the sedimentary basins in Myanmar, Soils and Foundations, 59, 2279-2298, 20191225
    Link to Paper Search Results by DOI
  20. Study on the sequential order of odor generation and sediment discharge in debris flow disaster, Jiban to Kensetsu, 37(1), 89-98, 20191227
  21. Strength development of dredged marine soil stabilized by steelmaking slag under disturbance and re-curing, Jiban to Kensetsu, 37(1), 123-130, 20191227
  22. Erosion resistance capacity of dredged marine clay treated by basic oxygen furnace slag, Soils and Foundations, 60(1), 257-265, 20200304
    Link to Paper Search Results by DOI
  23. Hiroshima Prefecture geo-disasters due to Western Japan Torrential Rainfall in July 2018, Soils and Foundations, 60(1), 283-299, 20200306
    Link to Paper Search Results by DOI
  24. Strength estimation of cement-treated marine clay with wide ranges of sand and initial water contents, Soils and Foundations, 60(5), 1065-1083, 20200904
    Link to Paper Search Results by DOI
  25. ★, Improvement of discontinuous deformation analysis incorporating implicit updating scheme of friction and joint strength degradation, Rock Mechanics and Rock Engineering, accepted, 2021

Invited Lecture, Oral Presentation, Poster Presentation

  1. Stability analysis of masonry structure at Angkor Thom in Cambodia using elasto-plastic NMM-DDA, Ryota HASHIMOTO, Tomofumi KOYAMA, Mamoru KIKUMOTO, Shunsuke YAMADA, Masato ARAYA, Yoshinori IWASAKI, Yuzo OHNISHI, The 4th Central Asian Geotechnical Symposium: Geo-Engineering for Construction and Conservation of Cultural Heritage and Historical Sites - Challenges and Solutions, 2012/09, Without Invitation, English
  2. Development of elasto-plastic NMM-DDA and its application to the stability analysis of Prasat Suor Prat, Angkor, Ryota HASHIMOTO, Tomofumi KOYAMA, Mamoru KIKUMOTO, Shunsuke YAMADA, Masato ARAYA, Yoshinori IWASAKI, Yuzo OHNISHI, The 7th Asian Rock Mechanics Symposium, 2012/10, Without Invitation, English
  3. Stability analysis of masonry structures in Angkor Thom, Cambodia using elasto-plastic NMM-DDA with subloading Cam-clay model, Ryota HASHIMOTO, Tomofumi KOYAMA, Mamoru KIKUMOTO, Shunsuke YAMADA, Masato ARAYA, Yoshinori IWASAKI, Yuzo OHNISHI, The 47th US Rock Mechanics/Geomechanics Symposium, 2013/06, Without Invitation, English
  4. Development of elasto-plastic NMM-DDA with modified Cam-clay model considering subloading surface and its application to the stability analysis of masonry structure in Angkor Thom, Cambodia, Ryota HASHIMOTO, Tomofumi KOYAMA, Mamoru KIKUMOTO, Shunsuke YAMADA, Masato ARAYA, Yoshinori IWASAKI, Yuzo OHNISHI, 11th International Conference on Analysis of Discontinuous Deformation, 2013/08, Without Invitation, English
  5. Numerical study on the influence of traditional soil foundation on the stability of masonry structure in Angkor with NMM-DDA, Ryota HASHIMOTO, Tomofumi KOYAMA, Mamoru MIMURA, Mamoru KIKUMOTO, Toru SAITO, Shunsuke YAMADA, Masato ARAYA, Yoshinori IWASAKI, The 14th International Conference of the International Association for Computer Methods and Advances in Geomechanics, 2014/09, Without Invitation, English
  6. Stability analysis of the Bayon central tower with NMM-DDA considering the excavation of the foundation, Ryota HASHIMOTO, Tomofumi KOYAMA, Mamoru KIKUMOTO, Toru SAITO, Shunsuke YAMADA, Masato ARAYA, Yoshinori IWASAKI, Yuzo OHNISHI, The 8th Asian Rock Mechanics Symposium, 2014/10, Without Invitation, English
  7. Development of soil-water coupled NMM-DDA, Ryota HASHIMOTO, Tomofumi KOYAMA, Mamoru KIKUMOTO, The 49th US Rock Mechanics/Geomechanics Symposium, 2015/06, Without Invitation, English
  8. Simulation of simple earth pressure problem using NMM-DDA, Kohei KAWAKAMI, Ryota HASHIMOTO, Yosuke HIGO, Mamoru MIMURA, The XIX INQUA Congress, 2015/07, Without Invitation, English
  9. Numerical study on dynamic behavior of reinforced soil wall using cylindrical wire net and chain, Takehiro SEKI, Yosuke HIGO, Ryota HASHIMOTO, Akihiro KITAMURA, Makoto KIMURA, The 28th KKHTCNN Symposium on Civil Engineering, 2015/11, Without Invitation, English
  10. Numerical study on the bearing capacity of masonry building foundation in Cambodia, Ryota HASHIMOTO, Tomofumi KOYAMA, Mamoru KIKUMOTO, Mamoru MIMURA, International Mini Symposium Chubu, 2016/05, Without Invitation, English
  11. Nodally integrated NMM-DDA for the continuum-discontinuum interaction analysis, Ryota HASHIMOTO, Tomofumi KOYAMA, Mamoru KIKUMOTO, Mamoru MIMURA, The 9th Asian Rock Mechanics/Geomechanics Symposium, 2016/10, Without Invitation, English
  12. Numerical study on bearing capacity characteristics of masonry platform structure for different stone thickness, Ryota HASHIMOTO, Tomofumi KOYAMA, Mamoru KIKUMOTO, The 51st US Rock Mechanics/Geomechanics Symposium, 2017/06, Without Invitation, English
  13. Influence of stacking conditions of stones on bearing capacity characteristics of masonry foundation, Ryota Hashimoto, Mamoru Mimura, Tomofumi Koyama, The 19th International Conference on Soil Mechanics and Geotechnical Engineering, 2017/09, Without Invitation, English, The International Society of Soil Mechanics and Geotechnical Engineering, Seoul
  14. Introduction of implicit integration of friction law into numerical manifold method, Ryota HASHIMOTO, Tomofumi KOYAMA, Mamoru KIKUMOTO, 10th Asian Rock Mechanics Symposium, 2018/11/01, Without Invitation, English
  15. Fundamental study on the dynamic behavior of Japanese castle masonry wall using NMM-DDA, Tomohiro Sueoka, Ryota Hashimoto, Mamoru Kikumoto, Tomofumi Koyama, 2019 Rock Dynamics Summit in Okinawa, 2019/05/07, Without Invitation, English
  16. Seismic response analysis using a 4-node iso-parametric numerical manifold method and 3d-discontinous deformation analysis, Takeshi Sasaki, Yuzo Ohnishi, Ryota Hashimoto, Sigeru Miki, Naoki Iwata, 2019 Rock Dynamics Summit in Okinawa, 2019/05/07, Without Invitation, English
  17. Simple analytical model for ultimate bearing capacity estimation of historic masonry structure foundation, Ryota HASHIMOTO, Tomofumi KOYAMA, Mamoru MIMURA, The 16th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, 2019/10/14, Without Invitation, English
  18. Improvement of the discontinuous deformation analysis for the rocking motion, Ryu MURAOKA, Ryota HASHIMOTO, The 5th ISRM Young Scholars' Symposium on Rock Mechanics and International Symposium on Rock Mechanics for Innovative Future, 2019/12/01, Without Invitation, English
  19. Deformation analysis of stone walls in Kumamoto Castle after the Kumamoto Earthquake -An example of Uto- and Hira-yagura turrets, Riho TANAKA, Tomofumi KOYAMA, Ryuto KUWAJIMA, Ryota HASHIMOTO, Mamoru KIKUMOTO, The 5th ISRM Young Scholars' Symposium on Rock Mechanics and International Symposium on Rock Mechanics for Innovative Future, 2019/12/01, Without Invitation, English
  20. Seismic response in the hydraulic-mechanical coupling analysis of a CCS site model by NMM, Sasaki, T., Horikawa, S.; Kusunose, K.; Hashimoto, R., The 54th US Rock Mechanics/Geomechanics Symposium, 2020/06, Without Invitation, English
  21. Numerical simulation of bearing capacity tests of composite foundation of soil and masonry stones using NMM-DDA, Ayumi KURIHARA, Ryota HASHIMOTO, Mamoru KIKUMOTO, 2020/07/21, Without Invitation, Japanese, Japanese Geotechnical Society
  22. Dynamic behavior of slope model piled steel hexagonal bar simulating discontinuous rock mass (Part 11) -Prediction by improved discontinuous deformation analysis-, Ryota HASHIMOTO, Tomofumi KOYAMA, The 15th Japan Symposium on Rock Mechanics, 2021/01/14, Without Invitation, Japanese, Japanese Society for Rock Mechanics

Awards

  1. 2012/10, The 47th Japan National Conference on Geotechnical Engineering Excellent Presentation Award, Japanese Geotechnical Society, Stability analysis of Prasat Suor Prat N1 Tower using elasto-plastic NMM-DDA
  2. 2014/03, Honorable Urban Management Engineer Prize, Dept. of Urban Management, Kyoto University, Developement of NMM-DDA incorporating elasto-plastic constitutive model of soil and its application to stability analysis of masonry structures.
  3. 2014/10, The 49th Japan National Conference on Geotechnical Engineering Excellent Presentation Award, Japanese Geotechnical Society, Stability analysis during ground excavation of Bayon temple in Angkor with NMM-DDA
  4. 2018/01/17, The 45th Japanese Rock Mechanics Symposium Excellent Paper Award, Rock Mechanics Committee of Japan Society of Civil Engineers, Development of discontinuous deformation analysis incorporating implicit integration of friction law
  5. 2018/03/31, "Jiban To Kensetsu" Best Paper Award, Chugoku Branch of Japanese Geotechnical Society, A study on the bearing capacity characteristics of masonry structure foundation in Angkor, Cambodia
  6. 2018/06/15, JSRM Doctoral Thesis Award 2017, Japanese Society for Rock Mechanics, Development of Stability Evaluation Methods for Soil-Masonry Structure Interactive Problems and Application to Historic Structures
  7. 2019/01/13, The 46th Japanese Rock Mechanics Symposium Excellent Paper Award, Rock Mechanics Committee of Japan Society of Civil Engineers, Simulation of shaking table test of discontinuous rock slope by fully implicit DDA considering dynamic friction
  8. 2019/05/31, Maeda Engineering Award, The Maeda Engineering Foundation, Development of Stability Evaluation Methods for Soil-Masonry Structure Interactive Problems and Application to Historic Structures
  9. 2019/08/19, The 54th Japan National Conference on Geotechnical Engineering Excellent Presentation Award, Japanese Geotechnical Society, Model loading experiment of composite foundation of soil and masonry stones using aluminum block and aluminum rods mass
  10. 2020/01/10, The 47th Japanese Rock Mechanics Symposium Excellent Paper Award, Rock Mechanics Committee of Japan Society of Civil Engineers, Improvement of contact formulation of the discontinuous deformation analysis for rocking motion
  11. 2020/01/10, The 47th Japanese Rock Mechanics Symposium Excellent Paper Award, Rock Mechanics Committee of Japan Society of Civil Engineers, Simulation of shaking table test of masonry wall by NMM-DDA
  12. 2020/06/05, Excellent International Conference Paper Award for Young Members, Japanese Geotechnical Society, Simple analytical model for ultimate bearing capacity estimation of historic masonry structure foundation
  13. 2021/01/15, The 15th Japan Symposium on Rock Mechanics, Japanese Society for Rock Mechanics, Dynamic behavior of slope model piled steel hexagonal bar simulating discontinuous rock mass (Part 11) -Prediction by improved discontinuous deformation analysis-

Social Activities

Organizing Academic Conferences, etc.

  1. The 15th Japan Rock Mechanics Symposium, 2020/04, 2021/01
  2. The 5th ISRM Young Scholars' Symposium on Rock Mechanics and International Symposium on Rock Engineering for Innovative Future, Steering Committee, 2018/04
  3. 15th International Conference on Analysis of Discontinuous Deformation, Steering Committee, 2019/05