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Fluid Dynamics Based Numerical Analysis on Failure and Large Deformation of Soft Foundation

Research Project

Project/Area Number 11650503
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

YASHIMA Atsushi  Gifu University, Department of Civil Engineering, Professor, 工学部, 教授 (90144394)

Co-Investigator(Kenkyū-buntansha) SAWADA Kazuhide  Gifu University, Department of Civil Engineering, Research Associate, 工学部, 助手 (30273121)
ZHANG Feng  Gifu University, Department of Civil Engineering, Associate Professor, 工学部, 助教授 (70303691)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2000: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1999: ¥2,400,000 (Direct Cost: ¥2,400,000)
Keywordsfluid dynamic / liquefaction / soft foundation / large deformation / prediction / numerical analysis / CIP method / Bingham fluid / CIP / 多層地盤 / 3次元解析 / 側方流動 / 相似則 / N-S方程式 / Bingham流体
Research Abstract

A new numerical method was proposed to simulate the mechanical behavior of soft foundation from its initial condition to large deformation and ultimate failure state based on the fluid dynamics based framework.
Firstly, the SIMPLE-VOF method was proposed. In the numerical analysis, the Bingham constitutive model which has yield stress criteria was introduced. The proposed method reproduced the similitude law on the lateral spreading due to liquefaction. The large lateral flow failure of the embankment in the lake was also reproduced in the same framework.
Secondly, CIP based numerical method which can treat compressive and incompressive fluids simultaneouly was proposed. The Bingham model was also introduced into the numerical method. The similitude law was reproduced for the lateral spreading of single layer ground. The lateral flow of the liquefied layer on which non-liquefied layer exists was also predicted. The numerical method was found to reproduce the experimental results on multi layer ground quantitatively.
Finally, CIP method was applied to predict the settlement analysis of the embankment with reinforcement. The significant effect of the reinforcement to reduce the embankment settlement was predicted by the newly proposed method.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] Ryosuke Uzuoka: "Fluid dynamics based prediction of liquefaction induced lateral spreading load"Proc.The 7th U.S.-Japan Workshop on Earthquake Resistant Design of Lifeline Facilities and Countermeasures against Soil Liquefaction. 131-144 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Seged Hadush: "Verification of the similitude law for flow of liquefied ground"Proc.The 7th U.S.-Japan Workshop on Earthquake Resistant Design of Lifeline Facilities and Countermeasures against Soil Liquefaction. 221-236 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 八嶋厚: "軟弱地盤上の補強土盛土の挙動予測に関する流体力学的アプローチ"第34回地盤工学研究発表会. 1799-1800 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Seged Hadush: "Importance of viscous fluid characteristics in liquefaction induced lateral spreading analysis"Computers and Geotechnics. 27. 199-224 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Seged Hadush: "CIP based liquefaction-induced lateral spreading analysis"Computer Methods and Advances in Geome chanics. 1093-1098 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Uzuoka, R., Yashima, A.and Kawakami, T.: "Fluid dynamics based prediction of liquefaction induced lateral spreading load"Proc. The 7th U.S.-Japan Workshop on Earthquake Resistant Design of Lifeline Facilities and Countermeasures against Soil Liquefaction. 131-144 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Hadush, S., Yashima, A.and Uzuoka, R: "Verification of the similitude law for flow of liquefied ground"Proc. The 7th U.S.-Japan Workshop on Earthquake Resistant Design of Lifeline Facilities and Countermeasures against Soil Liquefaction. 221-236 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Yashima, A., Mutsuda, H., Haduch, S.and Adachi, T.: "Fluid dynamics based prediction of reinforced embankment on soft faoundation"Proc.34th Annual Meeting of JGS. 1799-1800 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Hadush, S., Yashima, A.and Uzuoka, R.: "Importance of viscous fluid characteristics in liquefaction induced lateral spreading analysis"Computers and Geotechnics. 27. 199-224 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Hadush, S., Moriguchi, S., Yashima, A., Sawada, K.and Uzuoka, R.: "CIP based liquefaction-induced lateral spreading analysis"Computer Methods and Advances in Geomechanics, Desai et al.(eds), Balkema. 1093-1098 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] S.Hadush: "Importance of viscous fluid characteristics in liquefaction induced Lateral spreading analysis"Computers and geotechnics. 27-3. 199-224 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] S.Hadush: "CIP based liquefaction-induced lateral spreading analysis"Preedings of 10^<th> International Conference on Computer methods And Advances in Geomechanics. 2. 1093-1098 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 八嶋 厚: "軟弱地盤上の補強土盛土の挙動予測に関する流体力学的アプローチ"第34回地盤工学研究発表会講演集. 2. 1799-1800 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Seged Hadush: "Fluid dynamics based verification of the law of similitude for liguefied ground flow"土木学会第54回年次学術講演会講演集. B. 778-779 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Seged Hadush: "Velification of the similitude law for flow of liquefied ground"Prec.7th US-Japan Workship on Earthquake Resistant Design of lifeline Facilities and Countermeasures against Soil Liguefaction. (印刷中). (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Seged Hadush: "CIP法による液状化地盤の流動解析"第35回地盤工学研究発表会講演集. (発表予定). (2000)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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