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Enhancements in Experimental Methods for Failure Mode Analysis Considerating Geomaterial Similarity in Hydraulic Model Test

Research Project

Project/Area Number 20K14824
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 22030:Geotechnical engineering-related
Research InstitutionToyohashi University of Technology

Principal Investigator

Matsuda Tatsuya  豊橋技術科学大学, 工学(系)研究科(研究院), 准教授 (50736353)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords模型実験 / 浸透破壊 / 相似則 / 地盤材料 / 水理模型実験
Outline of Research at the Start

本研究では流体-地盤連成問題に関する重力場の水理模型実験を対象に以下を検討する。
(1)流体-地盤連成問題に関するシンプルな事象を対象とした各種模型実験を実施し、取り扱う地盤材料による現象の違いについて分析する。
(2)(1)の実験データをベースに、地盤材料の取扱いに関する相似則について取りまとめる。特に、考慮すべき相似性と緩和が可能な相似性およびその程度について、判断方法および指標を提案する。

Outline of Final Research Achievements

Three different scale of the model experiments in the gravity field were carried out. In the centrifuge model experiment, the centrifugal acceleration was varied. The results were compared with the results of the large model experiment in the gravity field, and it was found that the processes leading to seepage failure were similar in terms of the water level difference that causes ground deformation and the maximum water level difference that leads to failure, when the grain size of the soil material was considered so that the ratio of horizontal fluid force acting on the soil particles to vertical gravity follows the Froude's law. The results of the centrifuge model experiments showed that the water level difference that causes ground deformation and the maximum water level difference that leads to failure is similar. In the centrifuge experiments, it was confirmed that the process of seepage failure is unified by using a viscous fluid and that the Modeling of Models is valid.

Academic Significance and Societal Importance of the Research Achievements

本研究は豪雨・洪水による河川構造物の被害、高波浪・津波による海岸・港湾構造物の被害メカニズム解明に向けた流体-地盤連成問題に関する基礎的な要素が含まれており、本研究成果で得られた知見は、激甚化する自然災害による構造物等の被災メカニズムの解明における模型実験の精度向上に繋がると考える。また、将来的には重力場水理模型実験において流体-地盤-構造物の相互作用による連成問題の定量的評価に向けた相似条件の検討へと拡張・応用が期待できる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (14 results)

All 2023 2022 2021 2020 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (10 results) (of which Int'l Joint Research: 2 results) Remarks (1 results)

  • [Journal Article] MODEL TESTS ON RESPONSE OF CONCRETE BLOCK ON SEABED SUBJECTED TO UPWARD SEEPAGE FLOW2023

    • Author(s)
      Tatsuya Matsuda, Kinya Miura, Naoto Naito, Yuki Ando
    • Journal Title

      International Journal of GEOMATE

      Volume: 24 Issue: 105 Pages: 50-57

    • DOI

      10.21660/2023.105.g12217

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] MODEL TESTS ON SAND BOILING AROUND COFFERDAM CONSIDERING THE EFFECT OF GEOMATERIAL PROPERTIES2023

    • Author(s)
      Tatsuya Matsuda, Naoto Naito, Kinya Miura
    • Journal Title

      International Journal of GEOMATE

      Volume: 24 Issue: 102 Pages: 50-57

    • DOI

      10.21660/2023.102.g12218

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 海浜堆砂厚および後浜地下水位の影響を考慮した高波による護岸背後土砂の流出現象に関する解析的検討2021

    • Author(s)
      松田達也,内藤直人,伊藤志龍,坪川良太,佐々真志,宮武誠,越智聖志,牛渡裕二,飯田泰成
    • Journal Title

      土木学会論文集B2(海岸工学)

      Volume: 77(2)

    • NAID

      130008113416

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 実験スケールと地盤材料条件が矢板周りの浸透破壊現象に及ぼす影響の評価2023

    • Author(s)
      安藤優希,松田達也,堀口翔平,内藤直人,三浦均也
    • Organizer
      土木学会中部支部研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] MODEL TESTS ON SAND BOILING AROUND SHEET PILE REGARDING PROPERIES OF GROUND MATERIAL2022

    • Author(s)
      Tatsuya MATSUDA, Naoto NAITO, Kinya MIURA
    • Organizer
      12th Int. Conf. on Geotechnique, Construction Materials & Environment
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] MODEL TESTS ON CONCRETE BLOCKS SINKING INTO SEABED GROUND WITH UPWARD SEEPAGE FLOW GENERATED2022

    • Author(s)
      Tatsuya Matsuda, Kinya Miura, Naoto Naito and Yuki Ando
    • Organizer
      12th Int. Conf. on Geotechnique, Construction Materials & Environment
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 波浪が作用する円柱基礎周りに設置した捨石工による洗堀対策効果2022

    • Author(s)
      鈴木陸斗, 松田達也, 竹野史哉, 岡本遥河, 三浦均也, 内藤直人
    • Organizer
      第77回土木学会全国大会年次学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 粒子スケール効果を考慮した造波水路実験による土砂動態分析2022

    • Author(s)
      岡本遥河, 松田達也, 三浦均也, 内藤直人, 鈴木陸斗
    • Organizer
      第77回土木学会全国大会年次学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 矢板周りの浸透破壊に着目した実験スケール効果の分析2022

    • Author(s)
      松田達也, 三浦均也, 内藤直人, 矢上英里香, 安藤優希, Nur Atiqah Syazrina Binti Aziz
    • Organizer
      第57回地盤工学研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 個別要素法による防波堤の単調載荷解析2022

    • Author(s)
      松田達也,田村謙太郎,上田竜也,内藤直人
    • Organizer
      第66回応用力学講演会講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 海浜堆砂厚および後浜地下水位の影響を考慮した高波による護岸背後土砂の流出現象に関する解析的検討2021

    • Author(s)
      松田達也
    • Organizer
      第68回海岸工学講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 小型模型実験による矢板周りの浸透に伴う破壊過程の考察2021

    • Author(s)
      松田達也
    • Organizer
      第56回地盤工学研究発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] 矢板周りの浸透破壊を対象とした模型実験における地盤材料がプレ破壊からポスト破壊現象へ及ぼす影響2020

    • Author(s)
      矢上英里香,松田達也,三浦均也,内藤直人,藤井雄大
    • Organizer
      第32回中部地盤工学シンポジウム
    • Related Report
      2020 Research-status Report
  • [Remarks] http://www.geomech-lab-tut.org

    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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