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1998 Fiscal Year Final Research Report Summary

Study on Progressive Faulure of Satulated Dense Sand

Research Project

Project/Area Number 09450181
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Geotechnical engineering
Research InstitutionNAGOYA UNIVERSITY

Principal Investigator

MTSUO Minoru  PRESIDENT OF NAGOYA UNIVERSITY, 学長 (40025937)

Co-Investigator(Kenkyū-buntansha) YAMADA Eiji  NAGOYA UNIVERSITY,CIVIL ENG., RESEARCH ASSOCIATE, 工学研究科, 助手 (00293647)
NODA Toshihiro  NAGOYA UNIVERSITY,CIVIL ENG., ASSOCIATE PROFESSOR, 工学研究科, 助教授 (80262872)
NAKANO Masaki  NAGOYA UNIVERSITY,CIVIL ENG., ASSOCIATE PROFESSOR, 工学研究科, 助教授 (00252263)
ASAOKA Akira  NAGOYA UNIVERSITY,CIVIL ENG., PROFESSOR, 工学研究科, 教授 (50093175)
Project Period (FY) 1997 – 1998
KeywordsDense Sand / Excess Pore Pressure / Liquifaction / Reinforced Soil / Seepage Failure / Progressive Failure / Time Effect
Research Abstract

In order to investigate the progressive failure of dense sand deposits, a series of seepage failure tests were carried. The experimental setup was made of inhomogeneous sand deposits with different initial conditions either side of the sheet pile. The findings of this study are summarized as follows. a) Constant loading rate tests show the effect of loading rate on failure and the difference in failure modes. The "high" loading rate that should give partially drained condition shows "high" critical head and large failure region, while "low" loading rate that gives drained condition shows "low" critical head and small failure region. b) When the water table was kept constant at the critical head under drained condition after a "high" loading rate, delayed failure occurred. Some sand deposits failed about two minutes after the loading stopped. Excess pore water pressure around the sheet pile rose with upheaval of sand. c) When the water table was kept constant below the critical head under drained condition after instant loading and unloading, it shows the effect of loading history of seepage force application on deformation and progressive failure. The excess pore water pressure around the sheet pile rose with upheaval of sand.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] 浅岡 顕: "浸透力載荷による密な砂地盤の進行性破壊実験と水〜土連成有限変形解析" 第33回地盤工学研究発表会概要集(地盤工学会). 2分冊の2. 1307-1308 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 浅岡 顕: "間隙水の移動を伴った過圧密土の遅れ破壊の解析" 応用力学論文集(土木学会). Vol.1. 449-460 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 浅岡 顕: "浸透力載荷による密詰め飽和砂地盤の遅れ変形/破壊挙動" 土木学会第54回年次学術講演会講演概要集(土木学会). (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Asaoka,A.: "Delayed failure due to pore water migration" Proc.of Workshop on Localization and Bifurcation Theory for Soils and Rocks,Balkema. 333-343 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 浅岡 顕: "砂と粘土の違いについての弾塑性力学的考察" 第34回地盤工学研究発表会概要集(地盤工学会). (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Asaoka, A.: "Progressive failure of dense sand under seepage force and its soil-water coupled simulation" Proc.33^<nd> Annual conference of JGS. (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Asaoka, A.: "Delayd fauilar of overconsiderated soils due to pore water migration" Journal of Applied Mechanics, JSCE. (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Asaoka, A.: "Delayd deformation/failure of satulated dense sand under seepage force and" Proc.54^<nd> Annual conference of JSCE. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Asaoka, A.: "Delayd failure due to pore water migration" Proc.of Workshop on Localization and Bifurcation Theory for Soils and Rocks, Balkema. (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Asaoka, A.: "A consideration on differences between sand and clay based on elasto-plastic mechanics" Proc.34^<nd> Annual conference of JGS. (1999)

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

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Published: 1999-12-08  

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