Study on applicability of effective stress analysis considering large-strain liquefaction characteristics of sandy soils

DOI

Bibliographic Information

Other Title
  • 砂質土の大ひずみ液状化特性を考慮した有効応力解析の適用性に関する研究

Abstract

<p>The behavior of large strain region during liquefaction was analyzed by focusing on the relationship between the normalized cumulative dissipated energy ΣΔW/σ’c and φ/φf, which is the internal friction angle φ at each loading stage divided by the peak internal friction angleφf. The results showed that φ/φf tends to decrease after ΣΔW/σ’c peaks, and this trend depended on the relative density. The tendency of φ/φf to decrease was formulated, and a one-element simulation was performed using an effective stress analysis method based on finite deformation theory that incorporates the formulated relationship. As a result, the improved effective stress analysis method was able to simulate the behavior up to the large strain region with a certain degree of accuracy. However, the simulation using the specimen model caused divergence in the middle of the analysis. We plan to improve the method, including stability improvements.</p>

Journal

  • SEISAN KENKYU

    SEISAN KENKYU 75 (4), 287-291, 2023-11-01

    Institute of Industrial Science The University of Tokyo

Details 詳細情報について

  • CRID
    1390579753348474752
  • DOI
    10.11188/seisankenkyu.75.287
  • ISSN
    18812058
    0037105X
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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