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Dynamic behavior of sandy gravel and dense sand during level II earthquake motion considering the properties of soils

Research Project

Project/Area Number14350254
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Geotechnical engineering
Research InstitutionUniversity of Yamanashi

Principal Investigator

GOTO Satoshi  University of Yamanashi, Interdisciplinary Graduate School of Medicine and Engineering, Associate Professor, 大学院・医学工学総合研究部, 助教授 (80303395)

Co-Investigator(Kenkyū-buntansha) KAZAMA Motoki  Tohoku University, Graduate school of Engineering, Professor, 大学院・工学研究科, 教授 (20261597)
HATANAKA Munenori  Chiba Institute of Technology, Faculty of Engineering, Professor, 工学部, 教授 (60333019)
KOKUSHO Takaji  Chuo University, Faculty of Science and Engineering, Professor, 理工学部, 教授 (80286955)
NUMATA Atsunori  Tobishima Corporation, Research Center, Chief Engineer, 技術研究所, 課長(研究職)
KIKU Hiroyoshi  Kanto Gakuin University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (70251759)
Project Period (FY) 2002 – 2003
Project Status Completed(Fiscal Year 2003)
Budget Amount *help
¥6,200,000 (Direct Cost : ¥6,200,000)
Fiscal Year 2003 : ¥700,000 (Direct Cost : ¥700,000)
Fiscal Year 2002 : ¥5,500,000 (Direct Cost : ¥5,500,000)
KeywordsLiquefaction / gravel / Dense sands / Level II earthquake motion / Standard penetration test / liquefaction criteria / Undisturbed sample / Dynamic behavior
Research Abstract

The purpose of this study is to consider the liquefaction properties of gravelly soils and dense sands during level II earthquake motion and to propose highly accurate present-liquefaction criteria or newly developed liquefaction criteria. Following results were obtained:
1.Liquefaction properties of gravelly soil and dense sand deposits
Liquefaction properties of gravelly soils and dense sands were considered by using undisturbed freezing sample of the Kuzuryu and Edo River sand in laboratory liquefaction tests.
2.Scattering reason of liquefaction strength and N-value for gravelly soils and dense sands
Different liquefaction strengths were obtained among almost the same sample with similar N-value and fine contents from the liquefaction tests of undisturbed samples. This may be due to the accuracy of N-value, incorrectness using fine contents to evaluate the viscosity and so on, but the aging effects like cementation may be one of the moss important factors to evaluate the in-situ liquefaction strength.
3.Proposal of newly developed liquefaction criteria
As the process to reach the liquefaction stage is also important properties, newly developed liquefaction criteria using an index to show the continuous properties of soils during the earthquake were proposed.

Report

(3results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report

Research Products

(15results)

All Other

All Publications

  • [Publications] 沼田淳紀, 染谷昇, 後藤聡, 若松加寿江: "N値の大きな地盤の液状化抵抗の一例"土木学会第58回年次学術講演会. III-091. 181-182 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 三上武子, 竹島康人, 藤井紀之, 吉田望, 澤田俊一: "試験方法の違いが密な凍結砂試料の液状化特性に及ぼす影響"土木学会第58回年次学術講演会. III-089. 177-178 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 國生剛治, 岸本隆: "液状化地盤での土の不均一性による流動ポテンシャルについての中空ねじりせん断試験"レベル2地震動による液状化に関するシンポジウム論文集,土木学会. 379-384 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 畑中宗憲, 松村直樹, 馮雷: "砂地盤の締まり具合と強度特性の関係についての一考察"第39回地盤工学研究発表会. 39(投稿中). (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 及川兼司, 風間基樹, 渦岡良介, 仙頭紀明, 福元俊一, 斉藤賢二: "凍結サンプリングされた洪積砂の繰返しせん断抵抗-初期拘束圧の影響について-"第39回地盤工学研究発表会. 39(投稿中). (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Kokusho, T., Yoshikawa, T., Suzuki, K., Kishimoto, T.: "Post-Liquefaction Shear Mechanism in Layered Sand by Torsional Shear Tests"Proc.12th Pan-American Conference on Soil Mechanics and Geotechnical Engineering (Boston). 1. 1045-1050 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Numata, A., Someya, N., Goto, S., Wakamatsu, K.: "One example of liquefaction resistance of sands with a large N-value"proceedings of the 58^<th> JSCE Annual Meeting. III-091. 181-182 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Mikami, T., Takeshima, Y., Fujii, N., Yoshida, N., Sawada, S.: "The effects of different testing methods on the liquefaction properties of dense frozen samples"Proceedings of the 58^<th> JSCE Annual Meeting. III-089. 177-178 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Kokusho, T., Kishimoto, T.: "Hollow cylinder direct shear tests of considering the flow potential due to the non-uniformity of soil sample in liquefied deposits"Proceedings of the domestic symposium of soil liquefaction under level II earthquake motion. 379-384 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Hatanaka, M., Muramatsu, N., Phon, R.: "Relationship between compactness and strengths of sandy soils"Proceedings of the 39^<th> JGS Annual Meeting. (to be published). (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Oikawa, K., Kazama, M., Uzuoka, R., Sento, N.: "Cyclic shear resistance of pleistocene sand taken by in situ freezing method (effect of initial confining pressure)"Proceedings of the 39^<th> JGS Annual Meeting. (to be published). (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Kokushi, T., Yoshikawa, T., Suzuki, K., Kishimoto, T.: "Post-Liquefaction Shear Mechanism in Layered Sand by Torsional Shear Tests"Proc. 12th Pan-American Conference on Soil Mechanics and Geotechnical Engineering (Boston). Vol.1. 1045-1050 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 沼田淳紀, 染谷昇, 後藤聡, 若松加寿江: "N値の大きな地盤の液状化抵抗の一例"土木学会第58回年次学術講演会. III-089. 181-182 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 三上武子, 竹島康人, 藤井紀之, 吉田望, 澤田俊一: "試験方法の違いが密な凍結砂試料の液状化特性に及ぼす影響"土木学会第58回年次学術講演会. III-089. 177-178 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 國生剛治, 岸本隆: "液状化地盤での土の不均一性による流動ポテンシャルについての中空ねじりせん断試験"レベル2地震動による液状化に関するシンボジウム論文集,土木学会. 379-384 (2003)

    • Related Report
      2003 Annual Research Report

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Published : 2002-04-01   Modified : 2016-04-21  

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