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Development of a Practical Test Method for Friction Between Cohesive Soil and Structure Foundation

Research Project

Project/Area Number 01850132
Research Category

Grant-in-Aid for Developmental Scientific Research (B).

Allocation TypeSingle-year Grants
Research Field Building structures/materials
Research InstitutionTokyo Institute of Technology

Principal Investigator

KISHIDA Hideaki  Tokyo Institute of Technology, The Graduate School at Department of Environmental Engineering Professor, 大学院・総合理工学研究科, 教授 (30016513)

Co-Investigator(Kenkyū-buntansha) TSUBAKIHARA Yasunori  Tokyo Institute of Technology, The Graduate School at Department of Environmenta, 大学院総合理工学研究科, 助手 (10217367)
KAKURAI Masaaki  Takenaka Corporation, Technical Institute Senior Research Staff, 技術研究所, 主任研究員
Project Period (FY) 1989 – 1990
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥4,700,000 (Direct Cost: ¥4,700,000)
Fiscal Year 1990: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1989: ¥3,500,000 (Direct Cost: ¥3,500,000)
KeywordsFriction / Cohesive Soil / Steel / Test Method / Simple Shear Test / Surface Roughness / Excess Pore Water Pressure / 粘土 / 室内試験
Research Abstract

The purpose of this study is development of a practical test method for estimating the frictional resistance between cohesive soil and structure foundation. To start with, several sets of friction tests (1. and 2.) were carried out systematically to evaluate the efficiency of the test apparatus andto have a good grasp of the fundamental behavior of the friction. After that, friction tests (3.) were practiced with in-situ soil samples for estimating the skin frictions around piles.
The knowledge acquired through this study are as follows :
1. Friction tests between clay and steel :
(1) There is only the shear deformation of a clay sample until the shear stress reaches the maximum value.
(2) For smooth surface steel, the interface sliding occurs and the shear deformation of a clay sample stops after reaching the maximum shear stress.
(3) There is the boundary steel roughness, R_b : if the steel roughness is larger than R_b, the interface sliding does not occur and the frictional resistance reaches the upper limiting value which is equal to the shear strength of a clay sample.
2. Friction tests between cohesive soil and steel :
Clay-sand mixtures have been used as cohesive soil samples.
(1) The maximum shear stress is not affected by the clay-sand mixture ratio and steel roughness.
(2) The more richly a soil sample has sand, the larger R_b is.
(3) There is a complex behavior that the shear deformation of a soil sample occurs simultaneously with the interface sliding.
3. Friction tests with in-situ soil samples :
Two sets of friction tests were practiced by using undisturbed soil samples extracted from the ground around piles.
Since the frictional resistances were in reasonably agreement with the skin frictions around piles, there is a possibility of the application of the test method of this study to practical use.

Report

(3 results)
  • 1990 Annual Research Report   Final Research Report Summary
  • 1989 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] 内川 祐一郎: "単純せん断型試験機による粘土ー鋼材間の摩擦" 第25回土質工学研究発表会講演集. 2分冊の1. 707-708 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 椿原 康則: "粘土ー鋼材間の摩擦挙動に及ぼす試験装置の影響" 第25回土質工学研究発表会講演集. 2分冊の1. 705-706 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 椿原 康則: "原位置土試料を用いた摩擦試験" 1990年度日本建築学会大会学術講演梗概集. B分冊. 1641-1642 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 西山 高士: "混合土と鋼材間の摩擦挙動" 第26回土質工学研究発表会講演集. (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 椿原 康則: "杭の周面摩擦力推定のための室内摩擦試験" 第26回土質工学研究発表会講演集. (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Uchikawa, Y., Tsubakihara, Y. and Kishida, H.: ""Friction between Clay and Steel by Simple Shear Type Test Apparatus"" Proc. of the 25th Japan National Conference on Soil Mechanics and Foundation Engineering. Vol. 1. 707-708 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Tsubakihara, Y., Uchikawa, Y. and Kishida, H.,: ""Effect of Test Apparatus on Frictional Behavior between Clay and Steel"" Proc. of the 25th Japan National Conference on Soil Mechanics and Foundation Engineering,. Vol. 1. 705-706 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Tsubakihara, Y. and Kishida, H.: ""Friction Tests between In-situ Soil Samples and Steel"" Summaries of Technical Papers of Annual Meeting of Architectural Institute of Japan. Vol. B. 1641-1642 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Nishiyama, T., Tsubakihara, Y. and Kishida, H.: ""Frictional Behavior between Sand-Clay Mixtures and Steel"" Proc. of the 26th Japan National Conference on Soil Mechanics and Foundation Engineering. (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Tsubakihara, Y. and Kishida, H.: ""Laboratory Tests for Estimating Skin Friction around a Pile"" Proc. of the 26th Japan National Conference on Soil Mechanics and Foundation Engineering. (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 椿原 康則: "原位置土試料を用いた摩擦試験" 1990年度日本建築学会大会学術講演梗概集. B分冊. 1641-1642 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 西山 高士: "混合土と鋼材間の摩擦挙動" 第26回土質工学研究発表会発表講演集. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 椿原 康則: "杭の周面摩擦力推定のための室内摩擦試験" 第26回土質工学研究発表会発表講演集. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 内川祐一郎: "単純せん断型試験機による粘土と鋼材の摩擦" 第25回土質工学研究発表会発表講演集. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 椿原康則: "粘土-鋼材間の摩擦挙動に及ぼす試験装置の影響" 第25回土質工学研究発表会発表講演集. (1990)

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2016-04-21  

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