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1995 Fiscal Year Final Research Report Summary

Time-dependent behavior of undisturbed Pleistocene deposits and its prediction method

Research Project

Project/Area Number 06555143
Research Category

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

Allocation TypeSingle-year Grants
Research Field Geotechnical engineering
Research InstitutionOsaka University

Principal Investigator

MATSUI Tamotsu  Osaka University, Civil Eng., Professor, 工学部, 教授 (20029143)

Co-Investigator(Kenkyū-buntansha) NABESHIMA Yasuyuki  Osaka Univ., Civil Eng., Research Associate, 工学部, 助手 (40263214)
ODA Kazuhiro  Osaka Univ., Civil Eng., Research Associate, 工学部, 助手 (00185597)
Project Period (FY) 1994 – 1995
Keywordsstrain path control / digital pressure-volume control device / mini-triaxial test / remolded saturated clay / strain increment ratio
Research Abstract

A series of strain path control tests was carried out to investigate fundamental mechanical behavior of remolded clays in strain path control mini-triaxial tests. The outline of this research was summarized as follows ;
1. The authors decided the applicable range of strain incremental ratios, which was the ratio between volumetric and axial strain increments, based on undrained test data of remolded clays. Using these strain incremental ratios (0-0.41), a series of strain path control mini-triaxial tests was carried out.
2. The mechanical behavior in strain path control tests was different from that in undrained or drained tests. Especially, relationship between deviator stress and axial strain was quite different, in which deviator stress repidly increased as increasing strain increment ratio. This phenomenon can be explained by the interaction between volume change due to digital pressure volume control device (DPVC) and dilatancy of clay.
3. The mechanical behavior of remolded clays was also different from that of sands in strain path control tests. Consequently, it is essential to investigate mechanical behavior of soils based on strain path.

  • Research Products

    (6 results)

All Other

All Publications (6 results)

  • [Publications] 松井 保、他: "ひずみ経路制御ミニ三軸試験機の試作(印刷中)" 土木学会関西支部年次学術講演会. III. (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 松井 保、他: "ひずみ経路制御ミニ三軸試験機の試作と練返し粘土への適用" 地盤工学研究発表会. 3-1(印刷中). (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 松井 保、他: "ひずみ経路制御ミニ三軸試験機における練返し粘土のせん断挙動" 土木学会年次学術講演会. III(印刷中). (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Matsui T.et al.: "Development of strain path control mini-triaxial apparatus" Proc.of Annual Conference of JSCE Kansai Chapter, JSCE Kansai Chapter. (in press). (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Matsui T.et al.: "Development of strain path control mini-triaxial apparatus and its application to remolded clay" Proc.of 31th National Conference on Geotechnical Engineering, JGES. (in press). (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Matsui T.et al.: "Mechanical behavior of remolded clay in strain path control mini-triaxial tests" Proc.of 51th Annual Conference of JSCE,JSCE. (in press). (1996)

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

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Published: 1997-03-04  

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