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Research on the applicability of finite-deformation-consolidation theory to constant-rate-of-strain consolidation tests.

Research Project

Project/Area Number08650578
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Geotechnical engineering
Research InstitutionTottori University

Principal Investigator

SHIMIZU Masayoshi  Tottori University, Associate Professor, 工学部, 助教授 (00115859)

Project Period (FY) 1996 – 1997
Project Status Completed(Fiscal Year 1997)
Budget Amount *help
¥1,600,000 (Direct Cost : ¥1,600,000)
Fiscal Year 1997 : ¥500,000 (Direct Cost : ¥500,000)
Fiscal Year 1996 : ¥1,100,000 (Direct Cost : ¥1,100,000)
Keywordsclay / constant-rate-of-strain consolidation test / consolidation / small deformation / finite deformation / finite element method / simulation / constitutive equation / 圧密試験 / 時間依存性 / ひずみ速度
Research Abstract

The objectives of this research project is to understand the behavior of saturated clayy soils in constant-rate-of-strain consolidation tests through numerical analyzes based on the finite deformation theory and to examine the applicability of analysis methods that estimate the constitutive properties of the sample from the results of CRS consolidation tests. Main conclusions are
1. The small strain assumption may lead us to misunderstand the actual behavior of soils in CRS consolidati tsets although the assumption is practically useful.
2. The analysis method the investigator proposed can estimate the constitutive properties of the sample with a theoretical solution, even if the solution is not based on the small strain assumption. Applying the method to the conventional theory derived with the small strain assumption, the estimated constitutive properties were compared with those properties estimated by the conventionl analysis method. One of advantages of the investigator's method is that constitutive properties can be estimated from CRS tests conducted with ten times higer rate of strain than the rate a Japanese Geotechnical Society Standard specifies.
3. The investigator's method was applied to the theoretical solution derived without the small strain assumption, too. However, the estimated properties were strongly affected by the assumption made to linearize the governing equation, and therefore the properties were different from the actual properties.

Report

(3results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report

Research Products

(20results)

All Other

All Publications

  • [Publications] Shimizu, M.: "Large and small strain FE analysis of CRS consolidation tests of soft marine clays" Proc.of 6th Int.Offshore and Polar Eng.Confereme. 1. 424-430 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 清水 正喜: "飽和土の質量平衡式の混合体理論による定式化" 地盤工学会中国支部論文報告集. 15,1. 41-45 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 清水 正喜: "有限および微小変形有限要素解析による粘土の定ひずみ速度圧密試験のシミュレーション" 地盤工学会中国支部論文報告集. 15,1. 13-21 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 清水 正喜・所司 大輔: "飽和粘性土の定ひずみ速度圧密試験における圧縮速度依存性" 土木学会中国支部第49回研究発表会発表概要集. 1. 261-262 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Shimizu, M.: "Unselued problems in the constant-rate-of-strain consolidation test" Proc.of 8th Int.Offshere and Poler Eng.Conf.(印刷中). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 清水 正喜・田中 瀬二: "CRS圧密試験から推定される構成関係の圧縮速度依存性に対する解析法の影響" 第33回地盤工学研究発表会発表講演集. (印刷中). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Shimizu, M.: "Large and small strain FE analyzes of CRS consolidation tests of soft marine clays." Proc.of 6th Int.Offshore and Polar Engineering Conference.Vol.1. 424-430 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Shimizu, M.: "Mixture-theoty-based formulation of the mass balance equation for saturated soils" Journal of the Chugoku Branch, Japanese Geotechnical Society. Vol.15, No.1. 41-45 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Shimizu, M.: "Small and large deformation FE analyzes of CRS consolidation tests on saturated soils" Journal of the Chugoku Branch, Japanese Geotechnical Society. Vol.15, No.1. 13-21 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Shimizu, M.and Shoshi, D.: "Compression rate dependency of CRS consolidation tests on saturated cohesive soils" Proc.of 49th Regional Conf.on Civil Engineering, Chugoku Branch, Japan Society of Civil Engineers. Vol.1. 261-262 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Shimizu, M.: "Unsolved problems in the constant-rate-of-strain consolidation testing" Proc.of 8th Int.Offshore and Polar Engineering Conference. Vol.1 (in printing). (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Shimizu, M.and Tanaka, S.: "Effects of analysis methods on compression rate dependency of constitutive properties estimated from CRS consolidation tests" Proc.33rd Conference on Geotechnical Engineering. (in printing). (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Shimizu,M.: "Large and small strain FE analysis of CRS consolidation tests of soft marine clays" Proc.of 6th Int.Offshore and Polar Eng.Conference. 1. 424-430 (1996)

    • Related Report
      1997 Annual Research Report
  • [Publications] 清水正喜: "飽和土の質量平衡式の混合体理論による定式化" 地盤工学会中国支部論文報告集. 15・1. 41-45 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 清水正喜: "有限および微小変形有限要素解析による粘土の定ひずみ速度試験のシミュレーション" 地盤工学会中国支部論文報告集. 15.1. 13-21 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 清水正喜・ 所司大輔: "飽和粘性土の定ひずみ速度圧密試験における圧縮速度依存性" 土木学会中国支部第49回研究発表会 発表概要集. 1. 261-262 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Shimizu,M.: "Unsolved problems in the constant-zate-of-strain consolidation test." Proc.of 8th Int.Offshore and Polar Eing.Conference. (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 清水正喜・ 田中瀬二: "CRS圧密試験から推定される構成関係の圧縮速度依存性に対する解析法の影響" 第33回地盤工学研究発表会講演集. (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Masayoshi SHIMIZU: "Large and small strain FE analyses of CRS consolidation tests of soft marine clays." Proc.of the 6th Int.Offshore and Polar Engineering Conference. Vol.1. 424-430 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 清水正喜他: "粘性土の圧縮と圧密に関する研究の現状と問題点" 地盤工学会中国支部論文報告集. 14,1. 1-17 (1996)

    • Related Report
      1996 Annual Research Report

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Published : 1996-04-01   Modified : 2016-04-21  

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