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2006 Fiscal Year Final Research Report Summary

On the in-situ soil property evaluation method by electronic cone penetration testing

Research Project

Project/Area Number 16580199
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Irrigation, drainage and rural engineering/Rural planning
Research InstitutionSaga University

Principal Investigator

KOUMOTO Tatsuya  Saga University, Department of Bioenvironmental Science, Professor, 農学部, 教授 (60038304)

Co-Investigator(Kenkyū-buntansha) HINO Takenori  Saga University, Institute of Lowland Technology, Lecturer, 低平地研究センター, 講師 (20295033)
Project Period (FY) 2004 – 2006
KeywordsLand Development / Geotechnical Engineering / In-situ Test Method / Electronic Cone Penetration Testing / Clay / Pore Water pressure / Density / Undrained Shear Strength
Research Abstract

The Electronic Cone Penetration Testing (ECPT) is world-widely used as as in-situ ground investigation technique for determining accurate soil profiles and providing quantitative soil properties. The main purpose of ECPT is to obtain data on mechanical properties like undrained shear strength (S_u ) and excess pore water pressure of soft cohesive soils.
The values of S_u, which are obtained from laboratory tests, usually include some disturbed values due to sample transportation, different procedure, various laboratory tests and the technique of determination of S_u. To obtain undisturbed strength data, filtering the samples from disturbed soil is needed. In this research, the filtering equation which is expressed as the function of the deformation modulus ( E_<50> ) and the excess pore water pressure ( u_d ) is proposed as a simple equation and applied for Ariake clay sites to remove the s_u values which are considered to be rather disturbed in which E_<50> and u_d are considered to depend on the disturbance of strength and structure of clay, respectively.
The filtered selected s_u values were compared to find fairly good agreement with the s_u predicted by the ECPT data for Ariake clay sites.

  • Research Products

    (10 results)

All 2007 2006

All Journal Article (10 results)

  • [Journal Article] Applicability of the fall cone method to determine the plastic limit of clays2007

    • Author(s)
      Tatsuya Koumoto
    • Journal Title

      Proc. of Plasticity'07, Alaska (印刷中)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Applicability of the fall cone method to determine the plastic limit of clays2007

    • Author(s)
      T.Koumoto, F.Kondo, G.T.Houlsby
    • Journal Title

      Proc. of Plasticity '07, Alaska (in press)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] On the electronic cone factor N_<kt>2006

    • Author(s)
      Tatsuya Koumoto
    • Journal Title

      Proc. of Plasticity' 06, Halifax

      Pages: 187-189

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Bearing capacity and bending moments of laterally loaded flexible piles2006

    • Author(s)
      V.V.R.N.Sastry
    • Journal Title

      Proc. of Plasticity' 06, Halifax

      Pages: 208-210

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Soil stress distribution under tractor tire : Real size tests2006

    • Author(s)
      Nguyen N. Van
    • Journal Title

      Jour. Of Kyushu Branch of the Jap. Soc. of Agricultural Machinery 55

      Pages: 1-8

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Filtering equation used to predict undrained shear strength from ECPT result2006

    • Author(s)
      Tatsuya Koumoto
    • Journal Title

      Proc. of the Int. Sym. on Lowland Technology, Saga

      Pages: 49-54

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] On the electronic cone factor N_<kt>2006

    • Author(s)
      Koumoto, T., M.A.E.Rashwan
    • Journal Title

      Proc. of Plasticity '06, Halifax

      Pages: 187-189

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Bearing capacity and bending moments of laterally loaded flexible piles2006

    • Author(s)
      V.V.R.N.Sastry, T.Koumoto
    • Journal Title

      Proc. of Plasticity '06, Halifax

      Pages: 208-210

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Soil stress distribution under tractor tire : Real size tests2006

    • Author(s)
      N.N.Van, T.Matsuo, S, Inaba, T.Koumoto
    • Journal Title

      Jour. Of Kyushu Branch of the Jap. Soc. of Agricultural Machinery No. 55

      Pages: 1-8

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Filtering equation used to predict undrained shear strength from ECPT result2006

    • Author(s)
      T.Koumoto, M.A.E.Rashwan
    • Journal Title

      Int. Sym. on Lowland Technology, Saga

      Pages: 49-54

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2008-05-27  

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