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Microscopic study on crushability and compressibility of residual soils

Research Project

Project/Area Number 09650541
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Geotechnical engineering
Research InstitutionTokyo Institute of Technology

Principal Investigator

KUSAKABE Osamu  Tokyo Institute of Technology, Graduate school of Science and Technology, Professor (40092548)

Co-Investigator(Kenkyū-buntansha) TAKEMURA Jiro  Tokyo Institute of Technology, Graduate school of Science and Technology, Associate Professor (40179669)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 1998: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1997: ¥2,800,000 (Direct Cost: ¥2,800,000)
Keywordsparticle crushing / residual soils / Geotechnical Engineering / 風化 / 破砕性 / マサ土 / せん断 / 圧縮性 / 徴視的挙動 / 粒子 / 微視的挙動
Research Abstract

We consider that phenomena of particle crushing should be regarded as progressive and time dependent behaviour. The outcomes of the research maybe summarized in the following four points.
(1) Evidences of time dependent behavior related to particle crushing have been gathered from a comprehensive literature survey and categorically summarized. It has become clear that time dependent behavior can be observed with particle crushing, without dissipation of pore water pressure
(2) Crushing characteristics of single particle were studied by conducting a series of crushing tests on quarts particles obtained from weathered granite at Hiroshima prefecture. It was found from the tests that crushing strength depends on particle size and the probability of occurrence of the number of fracture exponentially decreases.
(3) One dimensional compression tests were carried out on the specimens formed by a stack of crushable cylindrical materials, from which observed failure mechanisms were classified. It was found that the accumulated number of crushed cylinders reached at 30% when the compression curve exhibits yielding and the two distinct mechanisms were split failure and compression failure a the contact points.
(4) Long-term Two dimensional bearing tests of rigid footing were conducted for the model ground consisting of crushable cylinders. It was confirmed that the time-dependent behavior was observed and the formation of slip line was strongly associated with the rotation of the cylinders.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (14 results)

All 2000 1999 1998 1988 Other

All Journal Article (8 results) Presentation (4 results) Publications (2 results)

  • [Journal Article] 破砕性円柱積層供試体の一次元圧縮試験における時間依存挙動2000

    • Author(s)
      武井正孝, 日下部 治, 林豪人
    • Journal Title

      地盤工学研究発表会概要集 35

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Journal Article] 破砕性円柱積層模型地盤上フーチングの時間依存沈下挙動2000

    • Author(s)
      山川拓郎, 武井正孝, 日下部 治
    • Journal Title

      地盤工学研究発表会概要集 35

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Journal Article] Time dependent behavior of geomaterial due. to particle crushing1999

    • Author(s)
      O. Kusakabe, M. Takei
    • Journal Title

      Proceedings of International workshop on soil crushability

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Journal Article] Time dependent behavior of geomaterial due to particle crushing1999

    • Author(s)
      Kusakabe, O, Takei, M
    • Journal Title

      Proceedings of International workshop on soil crushability

      Pages: 1-24

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Journal Article] 粒子破砕による地盤材料の時間依存挙動について1998

    • Author(s)
      武井正孝, 米今智信, Galer Mircea Mihai, 日下部 治
    • Journal Title

      東京工業大学土木工学科研究報告 58

      Pages: 37-56

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Journal Article] 大谷石模型地盤に設置した模型杭のクリープ沈下挙動1998

    • Author(s)
      武井正孝, 日下部 治
    • Journal Title

      土木学会年次学術講演会 54

      Pages: 818-819

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Journal Article] On the time dependent behavior of crushable geo-materials, Research Report1998

    • Author(s)
      Takei, M, Yoneima, T, Mircea M, Kusakabe, O
    • Journal Title

      Department of Civil Engineering, Tokyo Institute of Technology 58

      Pages: 37-56

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Journal Article] 破砕性材料の一次元圧縮の時間依存性に関する研究1988

    • Author(s)
      日下部治, 林豪人
    • Journal Title

      土木学会年次学術講演会 54

      Pages: 346-347

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Presentation] Study of time dependent behavior of one dimensional compression on crushable materials 54, 346-3471998

    • Organizer
      Annual Meeting of Civil Engineering Society
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Presentation] Creep settlement of model pile on Oya-ston, 54, 818-8191998

    • Author(s)
      Takei, M, Kusakabe, O
    • Organizer
      Annual Meeting of Civil Engineering Society
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Presentation] Time dependent behavior of one dimensional compression on crushable cylinders1998

    • Author(s)
      Takei, M, Kusakabe, 0, Hayashi, T
    • Organizer
      Annual Meeting of Civil Engineering Society
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Presentation] Time dependent behavior of footing on crushable ground1998

    • Author(s)
      Yamakawa, T., Takei, M., Kusakabe, 0
    • Organizer
      Annual Meeting of Civil Engineering Society
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 武井正孝、米今智信、G.M.Mihai & 日下部治: "粒子破砕による地盤材料の時間依存挙動について" 東京工業大学土木工学科研究報告. 58. 37-56 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 米今 智信: "密な砂におけるせん断帯内の粒子挙動の微視的観察" 第32回地盤工学研究発表会講演概要集. 1. 483-484 (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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