Basic Information

Faculty

• Faculty of Engineering

Email Address

• Email Address

  hashimoto.ryota.6ekyoto-u.ac.jp

Professional Memberships

• Japanese Society of Civil Engineers
• Japanese Society for Rock Mechanics
• Japanese Geotechnical Society

Academic Degree

• 24 Mar. 2014

  京都大学修士（工学）
• 23 Mar. 2017

  京都大学博士（工学）

Academic Resume (Graduate Schools)

• Kyoto University, Graduate School of Engineering, Department of Urban Management, D.Eng.
• Kyoto University, Graduate School of Engineering, Department of Urban Management, M.Eng.

Academic Resume (Undergraduate School/Majors)

• 京都大学, 工学部地球工学科, 卒業

High School

• High School

  私立　甲陽学院高等学校

Research History

• From Apr. 2023, To Present

  Kyoto University, Graduate School of Engineering Department of Civil and Earth Resources Engineering, Associate Professor
• From Apr. 2021, To Mar. 2023

  Hiroshima University, Graduate School of Advanced Science and Engineering, Associate Professor
• From 01 Jun. 2021, To 31 Mar. 2022

  University of California, Berkeley, Department of Civil and Environmental Engineering, Visiting Scholar
• From 01 Apr. 2020, To 31 Mar. 2021

  Hiroshima University, Graduate School of Advanced Science and Engineering, Assistant Professor
• From 01 Apr. 2017, To 31 Mar. 2020

  Hiroshima University, Graduate School of Engineering, Assistant Professor
• From 01 Apr. 2014, To 31 Mar. 2017

  Kyoto University, Department of Urban Management, JSPS Research Fellow (DC1)

Profile

• Profile

  a

ID,URL

• ORCID ID

  0000-0003-3274-2255

• J-Global ID

  201801011555919549

• Researcher ID

  F-5400-2017

• Researcher number

  60805349

Website(s) (URL(s))

• http://geomechanics.kuciv.kyoto-u.ac.jp/index.html

researchmap URL

• https://researchmap.jp/RHashimoto

Research

Research Areas

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

Papers

• Mixed material point method formulation, stabilization, and validation for a unified analysis of free-surface and seepage flow

  Bodhinanda Chandra; Ryota Hashimoto; Ken Kamrin; Kenichi Soga

  Journal of Computational Physics, Dec. 2024, Peer-reviewed, Corresponding author

  
• A coupled MPM-FDM for seepage failure analysis of saturated ground

  Hiroshi UEZONO; Ryota HASHIMOTO

  Japanese Geotechnical Journal, 01 Mar. 2024, Peer-reviewed, Invited, Last author, Corresponding author

  
• Stabilized mixed material point method for incompressible fluid flow analysis

  Bodhinanda CHANDRA; Ryota HASHIMOTO; Shinnosuke MATSUMI; Ken KAMRIN; Kenichi SOGA

  Computer Methods in Applied Mechanics and Engineering, Feb. 2024, Peer-reviewed, Lead author, Corresponding author

  
• Geotechnical properties of soft clays along Yangon River – Characteristics of soft clays in Thilawa Port area

  Yoshimitsu Yamada; Takashi Tsuchida; Nyan Myint Kyaw; Tatsuru Aoyama; Toshiya Akasaki; Moe Myint Su Hlaing; Ryota Hashimoto

  Soils and Foundations, Aug. 2023, Peer-reviewed

  
• Relationship between the initial water content of clay and the mixing quality of cement treated marine clay

  Takashi TSUCHIDA; Riki KUROSHITA; Ryota HASHIMOTO; Erika YAMASHITA

  Japanese Geotechnical Journal, 01 Mar. 2022, Peer-reviewed

  
• 2次元DDA-VOF法連成解析による土石流中の巨礫の衝撃力に関する検討

  上園浩志; 橋本涼太

  地盤と建設, Dec. 2021, Peer-reviewed, Last author, Corresponding author

  
• Study on strength estimation formula by cement-treated marine clays with a wide range of initial water content and sand content

  Takashi Tsuchida; Erika Yamashita; Ryota Hashimoto; Arlyn Aristo Cikmit

  Journal of Japanese Geotechnical Society, 01 Sep. 2021, Peer-reviewed

  
• Improvement of discontinuous deformation analysis incorporating implicit updating scheme of friction and joint strength degradation

  Ryota HASHIMOTO, Tomohiro SUEOKA, Tomofumi KOYAMA, Mamoru KIKUMOTO

  Rock Mechanics and Rock Engineering, 18 May 2021, Peer-reviewed, Lead author, Corresponding author

  
• Effects of primary curing and subsequent disturbance on the strength development of steel slag-treated marine clay

  Arlyn Aristo CIKMIT; Takashi TSUCHIDA; Kana TAKEYAMA; Ryota HASHIMOTO; Takatoshi NOGUCHI; Kenji KAYA

  Soils and Foundations, 2021, Peer-reviewed

  
• 土石流災害を対象としたワイヤレスセンサーの設置と観測結果

  土田孝; 橋本涼太; 大町正和; 梅本秀二

  地盤と建設, Dec. 2020, Peer-reviewed

  
• 機械的攪乱を与えた製鋼スラグ混合土の強度発現特性

  白神拓也; Arlyn Aristo CIKMIT; 土田孝; 橋本涼太; 嘉屋健二; 粟津進吾

  地盤と建設, Dec. 2020, Peer-reviewed

  
• Strength estimation of cement-treated marine clay with wide ranges of sand and initial water contents

  Erika YAMASHITA, Arlyn Aristo CIKMIT, Takashi TSUCHIDA, Ryota HASHIMOTO

  Soils and Foundations, 04 Sep. 2020, Peer-reviewed

  
• Hiroshima Prefecture geo-disasters due to Western Japan Torrential Rainfall in July 2018

  Ryota HASHIMOTO, Takashi TSUCHIDA, Takeo MORIWAKI, Seiji KANO

  Soils and Foundations, 06 Mar. 2020, Peer-reviewed

  
• Erosion resistance capacity of dredged marine clay treated by basic oxygen furnace slag

  Gyeong-O KANG, Takashi TSUCHIDA, Ryota HASHIMOTO, Shingo AWAZU, Young-Sang KIM

  Soils and Foundations, 04 Mar. 2020, Peer-reviewed

  
• Strength development of dredged marine soil stabilized by steelmaking slag under disturbance and re-curing

  Arlyn Aristo CIKMIT, Takashi TSUCHIDA, Takuya SHIRAGA, Ryota HASHIMOTO, Kenji KAYA, Kyoji MIZUTANI

  Jiban to Kensetsu, 27 Dec. 2019, Peer-reviewed

  
• Study on the sequential order of odor generation and sediment discharge in debris flow disaster

  Shohei DOHI, Takashi TSUCHIDA, Minoru SUGIYAMA, Hiroyuki TASHIRO, Ryota HASHIMOTO

  Jiban to Kensetsu, 27 Dec. 2019, Peer-reviewed

  
• 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

  Yoshimitsu YAMADA, Takashi TSUCHIDA, Nyan Myint KYAW, T. AOYAMA, S. H. MOE and Ryota HASHIMOTO

  Soils and Foundations, 25 Dec. 2019, Peer-reviewed

  
• 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)

  Takeo MORIWAKI, Takashi TSUCHIDA, Ryota HASHIMOTO, Shinji NAKAI, Seiji KANO, Masahiro KAIBORI

  Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), 20 Dec. 2019, Peer-reviewed

  
• Expansion characteristic of steel slag mixed with soft clay

  Arlyn Aristo Cikmit, Takashi Tsuchida, Kota Sogawa, Ryota Hashimoto, Hideki Honda, Gyeongo Kang

  Construction and Building Materials, 10 Dec. 2019, Peer-reviewed

  
• Particle size effect of basic oxygen furnace steel slag in stabilization of dredged marine clay

  Arlyn Aristo CIKMIT, Takashi TSUCHIDA, Gyeongo KANG, Ryota HASHIMOTO, Hideki HONDA

  Soils and Foundations, Oct. 2019, Peer-reviewed

  
• Stability analysis of underground space with discontinuous planes using a four node iso-parametric element numerical manifold method with rigid body rotation

  Ryota HASHIMOTO, Yuzo OHNISHI, Takeshi SASAKI, Sigeru MIKI

  Tunnelling and Underground Space Technology, Oct. 2019, Peer-reviewed

  
• Developmentof discontinuous deformation analysis (DDA) with an implicit integration algorithm of friction law

  Ryota HASHIMOTO, Mamoru KIKUMOTO, Tomofumi KOYAMA

  Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering), 20 Aug. 2019, Peer-reviewed

  
• Damage analysis of stone walls of Kumamotocastle due to the 2016 Kumamoto earthquake

  Keisuke KAMIYA, Mamoru KIKUMOTO, Ryota HASHIMOTO, Ryuto KUWAJIMA, Tomofumi KOYAMA

  Journal of Japan Society for Natural Disaster Science, Oct. 2018, Peer-reviewed

  
• Development of stability evaluation methods for soil-masonry structure interactive problems and application to historic structures

  Ryota HASHIMOTO

  International Journal of Japanese Society for Rock Mechanics, Jul. 2018, Invited

  
• Development of soil-water coupled NMM-DDA considering unsaturated seepage

  Ryota HASHIMOTO, Kohei KAWAKAMI, Mamoru MIMURA

  Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)), 31 Jan. 2018, Peer-reviewed

  
• Sealing geomaterial for coastal disposal facility using marine clay with the addition of a small amount of cement

  Ooki Kurihara; Yoshito Takaoka; Takashi Tsuchida; Takuya Shiraga; Ryota Hashimoto; Takahiro Kumagai

  International Journal of GEOMATE, 2018, Peer-reviewed

  
• A study on the bearing capacity characteristics of masonry structure foundation in Angkor, Cambodia

  Ryota HASHIMOTO, Tofomumi KOYAMA, Mamoru KIKUMOTO, Mamoru MIMURA

  Jiban to Kensetsu, Dec. 2017, Peer-reviewed

  
• Damage situation of stone walls in Kumamoto Castle causedby the 2016 Kumamoto Earthquake

  Tomofumi KOYAMA, Mamoru KIKUMOTO, Ryota HASHIMOTO, Ryuto KUWAJIMA

  Safety Science Review, Mar. 2017

  
• Method of deformation analysis for composite structures of soils and masonry stones

  Ryota Hashimoto; Mamoru Kikumoto; Tomofumi Koyama; Mamoru Mimrua

  COMPUTERS AND GEOTECHNICS, Feb. 2017, Peer-reviewed

  
• Numerical study on the bearing capacity of masonry platform with different number of layers

  Ryota HASHIMOTO, Tomofumi KOYAMA, Mamoru KIKUMOTO, Mamoru MIMURA

  Japanese Geotechnical Society Special Publication, Jan. 2017, Peer-reviewed

  
• Development of an enhanced elasto-plastic NMM-DDA with node-based element and its validation

  Ryota HASHIMOTO, Tomofumi KOYAMA, Mamoru KIKUMOTO, Mamoru MIMURA

  Japanese Geotechnical Journal, 30 Jun. 2016, Peer-reviewed

  
• Stability analysis of masonry structure in Angkor ruin considering the construction quality of the foundation

  Ryota HASHIMOTO, Tomofumi KOYAMA, Mamoru KIKUMOTO, Toru SAITO, Mamoru MIMURA

  Journal of Civil Engineering Research, Feb. 2014, Peer-reviewed

  
• Application of coupled elasto-plastic NMM-DDA procedure for the stability analysis of Prasat Suor Prat N1 Tower, Angkor, Cambodia

  R. Hashimoto; T. Koyama; M. Kikumoto; S. Yamada; M. Araya; Y. Iwasaki; Y. Ohnishi

  Geosystem Engineering, Mar. 2013, Peer-reviewed

  

Misc.

• 住宅地に隣接した土石流危険渓流のセンシング

  土田 孝; 大町 正和; 橋本 涼太; 梅本 秀二

  環境システム計測制御学会誌, Apr. 2022

  
• カリフォルニア大学バークリー校 滞在記

  橋本涼太

  地盤工学会誌, Jan. 2022, Invited, Lead author

  
• YMPG/YGESプログラム

  橋本涼太; 塩田絵里加

  地盤工学会誌, Jun. 2020, Invited, Lead author

  
• 平成30年7月豪雨における地域ごとの地盤災害の特徴（中国・広島その2）

  土田孝; 森脇武夫; 後藤順治; 今井卓也; 川本暁; 橋本涼太

  地盤工学会誌, Jul. 2019, Invited

  
• 平成30年7月豪雨における地域ごとの地盤災害の特徴（中国・広島その1）

  橋本涼太; 森脇武夫; 土田孝

  地盤工学会誌, Jul. 2019, Invited, Lead author

  

Presentations

• A fully implicit continuum-discontinuum method for geotechnical problems

  Ryota HASHIMOTO

  The 4th International Workshops on Advances in Computational Mechanics, 19 Sep. 2024, Invited

  
• A Fully Implicit DDA and Its Validity for Seismic Analysis of Rock Slopes

  Ryota HASHIMOTO

  The Second International Young Scientists Forum for Discontinuous Deformation Analysis Time: August, 24 Aug. 2024, Invited

  
• 大規模解析に向けた OpenMP による完全陰的不連続変形法の並列化

  徳田樹; 橋本涼太

  第49回岩盤力学に関するシンポジウム, Jan. 2023

  
• MPM-DDA による石垣振動台実験の再現解析における背面地盤のひずみ軟化の影響

  川野慎之介; 橋本涼太

  第49回岩盤力学に関するシンポジウム, Jan. 2023

  
• 二次元MPM-DDAによるバケット模型掘削実験の再現解析

  橋本涼太; 島津泰彦; 沖本翔; 小岩井一茂

  令和4年度土木学会全国大会第77回年次学術講演会, Sep. 2022

  
• Dynamic behavior and stability of model slopes with hexagonal jointing (paper 6) – prediction by improved Discontinuous Deformation Analysis

  Hashimoto, R; Koyama, T

  he 45th International Conference on Rock Dynamics and Applications, 18 Aug. 2022

  
• A coupled implicit MPM-DDA for soil-structure interaction problems

  Hashimoto, R; Bodhinanda, C; Soga, K

  The 15th World Congress on Computational Mechanics & 8th Asian Pacific Congress on Computational Mechanics, 02 Aug. 2022

  
• 二次元MPM-DDAによる受働土圧解析

  橋本涼太; 島津泰彦; 沖本翔; 小岩井一茂

  第57回地盤工学研究発表会, Jul. 2022

  
• 住宅地・道路の防災のための土石流センサーの開発と渓流における実証実験

  土田孝; 橋本涼太; 大町正和; 梅本秀二

  第57回地盤工学研究発表会, Jul. 2022

  
• 完全陰的不連続変形法への BiCGSTAB 法の導入と並列化

  徳田樹; 橋本涼太

  第57回地盤工学研究発表会, Jul. 2022

  
• 路面の粗度が土石流の流出特性に与える影響に関する傾斜水路模型実験

  上園浩志; 三宅正人; 小林大祐; 内田龍彦; 橋本涼太; 畠俊郎

  第57回地盤工学研究発表会, Jul. 2022

  
• 完全陰的不連続変形法の接触項の組み立て処理の並列化

  徳田樹; 橋本涼太

  第73回土木学会中国支部研究発表会, May 2022

  
• 不連続性岩盤を模擬した金属六角棒積層斜面模型の遠心力載荷加振実験(13)－改良型不連続変形法による評価－

  橋本涼太

  第48回岩盤力学に関するシンポジウム, 12 Jan. 2022

  
• 続・不連続変形法は岩盤解析の選択肢となり得るか？＆UCバークレー滞在レポート

  橋本涼太

  第16回岩盤力学イブニングセミナー, 15 Dec. 2021, Invited

  
• Fundamental Study on Boulder Impact Force by A Debris Flow Trapped in Check Dam Using Coupled DDA-VOF Analysis

  Hiroshi UEZONO

  The 15th International Conference on Analysis of Discontinuous Deformation, 23 Sep. 2021

  
• Seismic Response in the Hydraulic-Mechanical Coupling Analysis of a CCS Site Model by NMM

  Takeshi SASAKI

  The 15th International Conference on Analysis of Discontinuous Deformation, 23 Sep. 2021

  
• Solid and Water Interaction Analysis by DDA and MPS( Moving Particle Semi-implicit) Methods Applied to Dam Foundation

  Shigeru MIKI

  The 15th International Conference on Analysis of Discontinuous Deformation, 23 Sep. 2021, Invited

  
• Numerical Analysis on Stacking Conditions of Stones Influencing the Seismic Stability of Castle Masonry Wall

  Tomohiro SUEOKA

  The 15th International Conference on Analysis of Discontinuous Deformation, 23 Sep. 2021

  
• Evaluation of Resistive Force on Excavator Bucket Using NMM-DDA

  Ryota HASHIMOTO

  The 15th International Conference on Analysis of Discontinuous Deformation, 23 Sep. 2021, Invited

  
• 油圧ショベルによる掘削中のバケットの進行方向が掘削抵抗に与える影響

  橋本涼太

  令和3年度土木学会全国大会第76回年次学術講演会, 03 Sep. 2021, 土木学会

  
• 油圧ショベルのバケットの姿勢が掘削抵抗に与える影響に関する実験的研究

  橋本涼太

  第56回地盤工学研究発表会, 15 Jul. 2021

  
• DDA-VOF 法連成解析による土石流中の巨礫の流出挙動に関する基礎的研究

  上園浩志

  第56回地盤工学研究発表会, 15 Jul. 2021

  
• DDA と VOF 法を用いた固体―流体連成解析手法の開発

  上園浩志

  第73回令和3年度土木学会中国支部研究発表会, 13 Jun. 2021

  
• Dynamic behavior of slope model piled steel hexagonal bar simulating discontinuous rock mass (Part 11) -Prediction by improved discontinuous deformation analysis-

  Ryota HASHIMOTO

  The 15th Japan Symposium on Rock Mechanics, 14 Jan. 2021, Japanese Society for Rock Mechanics

  
• 油圧ショベルのバケットに作用する掘削抵抗に対する掘削深さの影響

  橋本涼太

  第75回土木学会年次学術講演会, 09 Sep. 2020

  
• 住宅地の土石流対策のための傾斜計を用いたセンサーによる危険渓流監視システムの現地試験

  土田孝

  第10回土砂災害に関するシンポジウム, Sep. 2020, 土木学会西部支部

  
• 豪雨時土砂災害避難体験VRの開発と防災教育への適用

  土田孝

  第10回土砂災害に関するシンポジウム, Sep. 2020

  
• Numerical simulation of bearing capacity tests of composite foundation of soil and masonry stones using NMM-DDA

  Ayumi KURIHARA

  第55回地盤工学研究発表会, 21 Jul. 2020, Japanese Geotechnical Society

  
• Seismic response in the hydraulic-mechanical coupling analysis of aCCS site model by NMM

  Sasaki, T.

  The 54th US Rock Mechanics/Geomechanics Symposium, Jun. 2020

  
• NMM-DDAを用いた石垣模型振動台実験の再現解析

  末岡知紘

  第47回岩盤力学に関するシンポジウム, 09 Jan. 2020, 土木学会岩盤力学委員会

  
• ロッキング振動の解析精度改善のための不連続変形法の接触定式化の改良

  村岡龍

  第47回岩盤力学に関するシンポジウム, 09 Jan. 2020, 土木学会岩盤力学委員会

  
• Deformation analysis of stone walls in Kumamoto Castle after the Kumamoto Earthquake -An example of Uto- and Hira-yagura turrets

  Riho TANAKA

  The 5th ISRM Young Scholars' Symposium on Rock Mechanics and International Symposium on Rock Mechanics for Innovative Future, 01 Dec. 2019

  
• Improvement of the discontinuous deformation analysis for the rocking motion

  Ryu MURAOKA

  The 5th ISRM Young Scholars' Symposium on Rock Mechanics and International Symposium on Rock Mechanics for Innovative Future, 01 Dec. 2019

  
• アルミ棒積層体を用いた石積構造物の基礎の模型載荷実験

  橋本涼太

  第40回地盤工学若手セミナー, 26 Oct. 2019

  
• Simple analytical model for ultimate bearing capacity estimation of historic masonry structure foundation

  Ryota HASHIMOTO

  The 16th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, 14 Oct. 2019

  
• Effect of Different Grain-sizes in Soft Soil Stabilization UsingBasic Oxygen Furnace Slag

  Arlyn Aristo CIKMIT

  令和元年度土木学会全国大会第74回年次学術講演会, 03 Sep. 2019

  
• Parameter study on the height of the castle stone wall usingNMM-DDA

  Keisuke KAMIYA

  令和元年度土木学会全国大会第74回年次学術講演会, 03 Sep. 2019

  
• 平成30年7月豪雨における広島県内の被害と広島大学防災・減災研究センターの活動

  橋本涼太

  防災技術講習会「平成30年7月豪雨に関する講習会」, 02 Aug. 2019, 一般社団法人 石川県建設コンサルタント協会, Invited

  
• 斜面の被害－提言と報告（広島地域）

  橋本涼太

  第54回地盤工学研究発表会, 17 Jul. 2019

  
• アルミ棒積層体とアルミブロックを用いた地盤－石積複合基礎の模型支持力実験

  橋本涼太

  第54回地盤工学研究発表会, 16 Jul. 2019

  
• 災害から生き残るために～知ってわかって行動する土砂災害対策～

  橋本涼太

  あさみなみ区民大学 C土と緑の贈り物コース第4回, 09 Jul. 2019, Invited

  
• 平成30年7月豪雨における広島県内の土砂災害の特徴と課題

  橋本涼太

  令和元年度京都大学土木会広島支部総会, 03 Jul. 2019, Invited

  
• アルミブロックとアルミ棒を用いた石積建造物基礎の模型支持力実験

  鈴江俊介

  第45回地盤工学セミナー報告会, 22 Jun. 2019

  
• 不連続変形法は岩盤解析の選択肢となり得るか？～課題と解決策，適用例～

  橋本涼太

  第8回岩盤力学イブニングセミナー, 14 Jun. 2019, 土木学会岩盤力学委員会, Invited

  
• 平成30年7月豪雨における広島県内の被害と広島大学防災・減災研究センターの活動

  橋本涼太

  第78回福井地域地盤研究会, 22 May 2019, Invited

  
• Seismic response analysis using a 4-node iso-parametric numerical manifold method and 3d-discontinous deformation analysis

  Takeshi Sasaki

  2019 Rock Dynamics Summit in Okinawa, 07 May 2019

  
• Fundamental study on the dynamic behavior of Japanese castle masonry wall using NMM-DDA

  Tomohiro Sueoka

  2019 Rock Dynamics Summit in Okinawa, 07 May 2019

  
• 剛体回転を考慮した4節点iso-parametric要素マニホールド法による落石モデルの解析

  橋本涼太

  第46回岩盤力学に関するシンポジウム, 12 Jan. 2019, 土木学会岩盤力学委員会

  
• 動摩擦を考慮した完全陰解法DDAによる岩盤斜面振動台実験の再現解析

  末岡知紘

  第46回岩盤力学に関するシンポジウム, 12 Jan. 2019, 土木学会岩盤力学委員会

  
• Introduction of implicit integration of friction law into numerical manifold method

  Ryota HASHIMOTO

  10th Asian Rock Mechanics Symposium, 01 Nov. 2018

  
• 石積構造のモデル

  橋本涼太

  地盤工学の知見に基づく歴史的地盤遺跡の保全と活用に関する研究委員会講習会, 12 Oct. 2018, 土木学会関西支部 歴史的地盤遺跡の保全と活用に関する研究委員会

  
• 広島市安芸区矢野東地区を対象とした現地踏査

  橋本涼太

  25 Jul. 2018, 地盤工学会

  
• 地盤工学が文化遺産を救う？

  橋本涼太

  第26回広島大学土木会技術シンポジウム, 09 Jun. 2018, Invited

  
• Development of discontinuous deformation analysis incorporating implicit integration of friction law

  Ryota HASHIMOTO

  The 45th Rock Mechanics Symposium, 15 Jan. 2018, Rock Mechanics Committee, JSCE

  
• Influence of stacking conditions of stones on bearing capacity characteristics of masonry foundation

  Ryota Hashimoto

  The 19th International Conference on Soil Mechanics and Geotechnical Engineering, Sep. 2017, The International Society ofSoil Mechanics and Geotechnical Engineering

  
• 歴史的石積構造物基礎の極限支持力算定法の提案

  橋本涼太

  第52回地盤工学研究発表会, Jul. 2017, 地盤工学会

  
• Numerical study on bearing capacity characteristics of masonry platform structure for different stone thickness

  Ryota HASHIMOTO

  The 51st US Rock Mechanics/Geomechanics Symposium, Jun. 2017

  
• 不飽和土－水連成NMM-DDAの開発

  橋本涼太

  第20回応用力学シンポジウム, May 2017, 土木学会 応用力学委員会

  
• 離散体の地震応答解析におけるマニフォールド法の適用に関する基礎的研究

  橋本涼太

  第14回岩の力学国内シンポジウム, Jan. 2017

  
• 熊本地震における石積構造物の被害の調査と分析

  小山倫史

  第14回岩の力学国内シンポジウム, Jan. 2017

  
• Nodally integrated NMM-DDA for the continuum-discontinuum interaction analysis

  Ryota HASHIMOTO

  The 9th Asian Rock Mechanics/Geomechanics Symposium, Oct. 2016

  
• プレア・ヴィヘア寺院第三ゴープラにおける地盤調査と石積構造物の変状分析

  桑島流音

  第51回地盤工学研究発表会, Sep. 2016

  
• 石積基壇構造の支持力特性に関する数値解析的検討

  橋本涼太

  第51回地盤工学研究発表会, Sep. 2016

  
• Numerical study on the bearing capacity of masonry building foundation in Cambodia

  Ryota HASHIMOTO

  International Mini Symposium Chubu, May 2016

  
• 精密写真測量によるアンコール遺跡バイヨン中央塔における塔体・基壇の石積みの変位計測

  中西由起

  第44回岩盤力学に関するシンポジウム, Jan. 2016

  
• 地盤数値解析法に基づく歴史的石積構造物の安定性検討

  橋本涼太

  日本材料学会関西支部第10回若手シンポジウム, Dec. 2015

  
• Numerical study on dynamic behavior of reinforced soil wall using cylindrical wire net and chain

  Takehiro SEKI

  The 28th KKHTCNN Symposium on Civil Engineering, Nov. 2015

  
• 円筒金網とチェーンを用いた補強盛土のモデル化と地震時挙動解析

  関健宏

  第70回土木学会年次学術講演会, Sep. 2015

  
• NMM-DDAによる擁壁転倒時の土圧問題の解析

  川上紘平

  第70回土木学会年次学術講演会, Sep. 2015

  
• NMMによる打継目を有する無筋コンクリート橋脚の地震応答解析

  橋本涼太

  第70回土木学会年次学術講演会, Sep. 2015

  
• アンコール遺跡バイヨン中央塔における精密写真測量を用いた塔体・基壇の石積み変状の計測

  中西由起

  第50回地盤工学研究発表会, Sep. 2015

  
• NMM-DDAによる地盤と擁壁の相互作用問題に関する研究

  川上紘平

  第50回地盤工学研究発表会, Sep. 2015

  
• 土－水連成NMM-DDAの開発と検証解析

  橋本涼太

  第50回地盤工学研究発表会, Sep. 2015

  
• Simulation of simple earth pressure problem using NMM-DDA

  Kohei KAWAKAMI

  The XIX INQUA Congress, Jul. 2015

  
• Development of soil-water coupled NMM-DDA

  Ryota HASHIMOTO

  The 49th US Rock Mechanics/Geomechanics Symposium, Jun. 2015

  
• NMM-DDAによる準静的土圧問題の解析

  川上紘平

  平成27年度土木学会関西支部年次学術講演会, May 2015

  
• Stability analysis of the Bayon central tower with NMM-DDA considering the excavation of the foundation

  Ryota HASHIMOTO

  The 8th Asian Rock Mechanics Symposium, Oct. 2014

  
• Numerical study on the influence of traditional soil foundation on the stability of masonry structure in Angkor with NMM-DDA

  Ryota HASHIMOTO

  The 14th International Conference of the International Association for Computer Methods and Advances in Geomechanics, Sep. 2014

  
• NMM-DDAによるアンコール遺跡バイヨン寺院と地盤の安定解析

  橋本涼太

  第69回土木学会年次学術講演会, Sep. 2014

  
• NMM-DDAによるアンコール遺跡バイヨン寺院の基壇掘削時安定解析

  橋本涼太

  第49回地盤工学研究発表会, Jul. 2014, 地盤工学会

  
• アンコール遺跡バイヨン寺院の版築および周辺の自然地盤の力学特性

  斎藤徹

  第49回地盤工学研究発表会, Jul. 2014, 地盤工学会

  
• 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

  11th International Conference on Analysis of Discontinuous Deformation, Aug. 2013

  
• 下負荷面Cam-clayモデルを導入したNMM-DDAのプラサート・スープラN1塔の安定解析への適用

  橋本涼太

  第48回地盤工学研究発表会, Jul. 2013

  
• Stability analysis of masonry structures in Angkor Thom, Cambodia using elasto-plastic NMM-DDA with subloading Cam-clay model

  Ryota HASHIMOTO

  The 47th US Rock Mechanics/Geomechanics Symposium, Jun. 2013

  
• 弾塑性NMM-DDAによるプラサート・スープラN1塔の安定解析および補修効果の事後検討

  橋本涼太

  第13回岩の力学国内シンポジウム, Jan. 2013

  
• Development of elasto-plastic NMM-DDA and its application to the stability analysis of Prasat Suor Prat, Angkor

  Ryota HASHIMOTO

  The 7th Asian Rock Mechanics Symposium, Oct. 2012

  
• Stability analysis of masonry structure at Angkor Thom in Cambodia using elasto-plastic NMM-DDA

  Ryota HASHIMOTO

  The 4th Central Asian Geotechnical Symposium: Geo-Engineering for Construction and Conservation of Cultural Heritage and Historical Sites - Challenges and Solutions, Sep. 2012

  
• 弾塑性NMM-DDAによる石積構造物と地盤の相互作用を考慮した安定性評価

  橋本涼太

  第67回土木学会年次学術講演会, Sep. 2012

  
• 弾塑性NMM-DDAを用いたプラサート・スープラN1塔の安定解析

  橋本涼太

  第47回地盤工学研究発表会, Jul. 2012, 地盤工学会

  
• 弾塑性NMM-DDAの開発および石積構造物の安定性評価への適用

  橋本涼太

  平成24年度土木学会関西支部年次学術講演会, Jun. 2012, 土木学会関西支部

  

Books and Other Publications

• 平成30年7月豪雨を踏まえた豪雨地盤災害に対する地盤工学の課題－地盤工学からの提言－

  Joint work

  31 May 2019, Not refereed

  
• 2018年7月西日本豪雨災害調査報告書

  橋本涼太, Single work

  地盤工学会中国支部, 10 Dec. 2018, Not refereed

  

Awards

• 12 Jan. 2023

  土木学会 岩盤力学委員会, 第49回岩盤力学に関するシンポジウム優秀講演論文賞

  大規模解析に向けたOpenMPによる完全陰的不連続変形法の並列化, Japan society

  徳田樹;橋本涼太
• 29 Aug. 2022

  地盤工学会, 第57回地盤工学研究発表会優秀論文発表者賞

  二次元MPM-DDAによる受働土圧解析, Japan society

  橋本涼太
• 17 Jun. 2022

  岩の力学連合会, 令和3年度岩の力学連合会論文賞

  Improvement of discontinuous deformation analysis incorporating implicit updating scheme of friction and joint strength degradation, Japan society

  Ryota HASHIMOTO; Tomofumi KOYAMA; Mamoru KIKUMOTO
• 地盤工学会中国支部, 地盤工学会中国支部 令和3年度「技術賞」

  豪雨時土砂災害避難体験VRの開発と防災教育への適用

  広島大学橋本研究室
• 20 Apr. 2022

  文部科学省, 令和4年度科学技術分野の文部科学大臣表彰 若手科学者賞

  地盤と岩盤の力学に立脚した石積文化財の安定性評価法の研究, Others

  橋本涼太
• 11 Jun. 2021

  土木学会, 令和2年度土木学会論文奨励賞

  摩擦構成則の陰的積分アルゴリズムを導入した不連続変形法（DDA）の開発, Japan society

  橋本涼太
• 14 Jan. 2021

  岩の力学連合会, 第15回岩の力学国内シンポジウム優秀講演論文賞

  不連続性岩盤を模擬した金属六角棒積層の斜面模型の動的挙動評価(11)ー改良型不連続変形法による予測解析ー, Japan society

  橋本涼太;小山倫史
• 05 Jun. 2020

  地盤工学会, 令和元年度国際会議若手優秀論文賞

  Simple analytical model for ultimate bearing capacity estimation of historic masonry structure foundation, Japan society

  橋本涼太
• 11 Jan. 2020

  土木学会 岩盤力学委員会, 第47回岩盤力学に関するシンポジウム優秀講演論文賞

  NMM-DDAを用いた石垣模型振動台実験の再現解析, Japan society

  末岡知紘;橋本涼太;菊本統;神谷圭祐;Adrian RUSSELL
• 11 Jan. 2020

  土木学会 岩盤力学委員会, 第47回岩盤力学に関するシンポジウム優秀講演論文賞

  ロッキング振動の解析精度改善のための不連続変形法の接触定式化の改良, Japan society

  村上龍;橋本涼太
• 地盤工学会, 第54回地盤工学研究発表会優秀論文発表者賞

  アルミ棒積層体とアルミブロックを用いた地盤－石積複合基礎の模型支持力実験, Japan society

  橋本涼太
• 31 May 2019

  前田記念工学振興財団, 令和元年度前田工学賞

  地盤－石積複合構造物の安定性評価手法の開発と歴史的構造物への適用に関する研究, Publisher

  橋本涼太
• 13 Jan. 2019

  土木学会 岩盤力学委員会, 第46回岩盤力学に関するシンポジウム優秀講演論文賞

  動摩擦を考慮した完全陰解法DDAによる岩盤斜面振動台実験の再現解析, Japan society

  末岡知紘;橋本涼太;岩田直樹;清田亮二;高橋裕徳
• 15 Jun. 2018

  岩の力学連合会, 平成29年度岩の力学連合会博士論文賞

  Development of Stability Evaluation Methods for Soil-Masonry Structure Interactive Problems and Application to Historic Structures, Japan society
• 31 Mar. 2018

  地盤工学会中国支部, 「地盤と建設」論文賞

  カンボジア・アンコール遺跡の石積構造物基礎の支持力特性に関する一考察, Japan society

  橋本涼太;小山倫史;菊本統;三村衛
• 17 Jan. 2018

  土木学会 岩盤力学委員会, 第45回岩盤力学に関するシンポジウム優秀講演論文賞

  不連続面の摩擦則の陰的積分を導入した不連続変形法の開発, Japan society

  橋本涼太;小山倫史;菊本統
• 19 Dec. 2015

  日本材料学会関西支部, 日本材料学会関西支部第10回若手シンポジウムポスター支部長賞

  地盤数値解析法に基づく歴史的石積構造物の安定性検討, Japan society

  橋本涼太
• 21 Feb. 2014

  京都大学大学院工学研究科都市社会工学専攻, 京都大学大学院都市社会工学専攻優秀修士論文賞

  地盤の弾塑性構成則を導入したNMM-DDAの開発と石積構造物の安定性評価への適用, Others

  橋本涼太
• 28 Nov. 2014

  地盤工学会, 第49回地盤工学研究発表会優秀論文発表者賞

  NMM-DDAによるアンコール遺跡バイヨン寺院の基壇掘削時安定解析, Japan society

  橋本涼太
• 17 Oct. 2012

  地盤工学会, 第47回地盤工学研究発表会優秀論文発表者賞

  弾塑性NMM-DDAを用いたプラサート・スープラN1塔の安定解析, Japan society

  橋本涼太

External funds: Kakenhi

• 不飽和地盤の微生物固化プロセスシミュレータの開発：遺構の基礎修復の理想像に向けて

  Grant-in-Aid for Scientific Research (B)

  Basic Section 22030:Geotechnical engineering-related

  Kyoto University

  橋本 涼太

  From 01 Apr. 2023, To 31 Mar. 2027, Granted

  地盤改良;MICP;数値解析;不飽和土特性

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23H01502/
• レオロジー特性に着目したセメント改良による既存の河川堤防の強化

  Grant-in-Aid for Challenging Research (Exploratory)

  Medium-sized Section 22:Civil engineering and related fields

  Hiroshima University

  半井 健一郎

  From 30 Jun. 2022, To 31 Mar. 2025, Granted

  河川堤防;セメント改良;越水;セメントペースト;レオロジー

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22K18831/
• 耐越水堤防の総合的な性能評価を実現する地盤－構造－流体連成解析技術の開発

  Fund for the Promotion of Joint International Research (Fostering Joint International Research (A))

  Basic Section 22030:Geotechnical engineering-related

  Hiroshima University

  橋本 涼太

  From 01 Apr. 2022, To 31 Mar. 2025, Granted

  河川堤防;越水侵食;数値解析;Material Point Method;不連続変形法;地盤－流体－構造連成解析;地盤－構造－流体連成

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21KK0254/
• New developments in fluid and mixed grain size granular mechanics based on Available Porosity theory

  Grant-in-Aid for Challenging Research (Exploratory)

  Medium-sized Section 22:Civil engineering and related fields

  Hiroshima University

  内田 龍彦

  From 09 Jul. 2021, To 31 Mar. 2024, Granted

  オイラー型混相流モデル;混合粒径;空隙率;粗粒化;混合粒径流砂量式;AP理論;流速分布;堆積実験;利用可能空隙率;粒径比;粗粒子充填;細粒子充填;歪;浸透流

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21K18750/
• Development of stability evaluation method for masonry retaining walls against multi-hazards of earthquake and rainfall

  Grant-in-Aid for Early-Career Scientists

  Basic Section 22030:Geotechnical engineering-related

  Hiroshima University

  Ryota Hashimoto

  From 01 Apr. 2020, To 31 Mar. 2023, Project Closed

  石積壁;石垣;数値解析;MPM-DDA;浸透－変形連成解析;FDM;城郭石垣;地震応答解析;大変形;地震;降雨

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20K14827/
• Eulerian calculation method for motion of the sediment particles with grain size distribution in water flows

  Grant-in-Aid for Challenging Research (Exploratory)

  Medium-sized Section 22:Civil engineering and related fields

  Hiroshima University

  Tatsuhiko Uchida

  From 28 Jun. 2019, To 31 Mar. 2022, Project Closed

  混合粒径;空隙率;交換層;オイラー型モデル;利用可能空隙率;土砂堆積膨張;土砂輸送;分級;ひずみ;オイラー型混合粒径モデル;細粒土砂;堆積過程;Fine Packing;Coarse Packing;粒径比;侵食過程;オイラー型堆積モデル;粗粒子充填過程;細粒子充填過程;最密充填;自然堆積;オイラー型粒子群解析法;多相流モデル

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19K21995/
• Simulation of the life of embankments from the construction process through the long-term in-service period to deformation and failure

  Grant-in-Aid for Scientific Research (A)

  Medium-sized Section 22:Civil engineering and related fields

  Yokohama National University

  Mamoru Kikumoto

  From 01 Apr. 2019, To 31 Mar. 2023, Project Closed

  土構造物;応答曲面;浸水破壊;X線撮影;風化・劣化;築造過程;脆弱岩破砕土;締固め曲線;膨潤性粘土鉱物;時間依存挙動;風化現象;強度低下;構成則;締固め土;風化;侵食;盛土;間隙率;含水比;Lambert-Beerの法則;最適含水比;締固めエネルギー;構成関係;締固め;劣化;多孔質体;膨潤;浸水崩壊;配位数;劣化現象;長期供用;X線CT;不飽和土;不均質性;脆弱岩;引張破壊;マルチスケール解析;泥岩;スメクタイト

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19H00780/
• Study on seismic performance of flexible retaining walls using discontinuum-continuum coopled analysis: Focusing on masonry walls

  Grant-in-Aid for Early-Career Scientists

  Basic Section 22030:Geotechnical engineering-related

  Hiroshima University

  Ryota Hashimoto

  From 01 Apr. 2018, To 31 Mar. 2020, Project Closed

  石積擁壁;地震時挙動;数値解析;石積構造物;石材の積み方;ブロック積擁壁;離散体－連続体連成解析;地震応答解析;鉛直地震動;柔構造擁壁;地盤－構造連成;離散体;地震時安定性

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18K13829/
• 不飽和地盤の微生物固化プロセスシミュレータの開発：遺構の基礎修復の理想像に向けて

  Grant-in-Aid for Scientific Research (B)

  Basic Section 22030:Geotechnical engineering-related

  Kyoto University

  橋本 涼太

  From 01 Apr. 2023, To 31 Mar. 2027, Granted

  遺跡建造物;地盤改良;微生物固化;数値解析;MICP;不飽和土特性

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23K26196/
• Proposed on the newly negative emission technology to promote CO2 sequestration in land infrastructures

  Grant-in-Aid for Scientific Research (B)

  Basic Section 22030:Geotechnical engineering-related

  Hiroshima University

  畠 俊郎

  From 01 Apr. 2024, To 31 Mar. 2027, Granted

  土構造物;CO2貯留;ネガティブエミッション

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24K00980/

Education

Teaching subject(s)

• From 01 Apr. 2024, To 31 Mar. 2025

  Rock Engineering

  3175, Fall, Faculty of Engineering, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Soil MechanicsIand Exercise

  3162, Fall, Faculty of Engineering, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Soil mechanics, Laboratory and Exercises

  3138, Spring, Faculty of Engineering, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Experiments on Soil Mechanics and Exercises

  3520, Spring, Faculty of Engineering, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Computational Geotechnics

  K016, Fall, Graduate School of Engineering, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Exercise on Project Planning

  F251, Year-long, Graduate School of Engineering, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Geomechanics

  F025, Spring, Graduate School of Engineering, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Soil Mechanics II and Exercises

  3519, Spring, Faculty of Engineering, 3
• From 01 Apr. 2024, To 31 Mar. 2025

  Internship on Infrastructure Engineering

  U059, Year-long, Graduate School of Engineering, 4
• From 01 Apr. 2024, To 31 Mar. 2025

  Long-Term Internship

  F150, Year-long, Graduate School of Engineering, 4
• From 01 Apr. 2023, To 31 Mar. 2024

  Geomechanics

  F025, Spring, Graduate School of Engineering, 2
• From 01 Apr. 2023, To 31 Mar. 2024

  Integrated Seminar on Urban Management A

  U201, Spring, Graduate School of Engineering, 2
• From 01 Apr. 2023, To 31 Mar. 2024

  Integrated Seminar on Infrastructure Engineering A

  U051, Spring, Graduate School of Engineering, 2

Participation in PhD Defense

• Mechanism investigation on weathered mudstone slope deformation under excavation process with geological complexity and folded structure

  YUAN KAIXUAN, Graduate School of Engineering, Sub-chief Examiner

  25 Mar. 2024
• Mechanism investigation on weathered mudstone slope deformation under excavation process with geological complexity and folded structure

  YUAN KAIXUAN, Graduate School of Engineering, Sub-chief Examiner

  25 Mar. 2024
• Enhancing Geotechnical Properties of High-Water Content Clay Using Finely Shredded Paper

  KEBEDE TESHOME BIRHANU, Graduate School of Engineering, Sub-chief Examiner

  25 Mar. 2024