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<p>A pragmatic method for considering creep deformation during the process of primary consolidation is proposed. The main point of the method is using a modified yield stress in the calculation of consolidation settlement with conventional method. The modified yield stress is evaluated by a well-documented strain rate–yield stress relationship, which is based on isotache concept, and a newly proposed method for evaluating the plastic strain rate (<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\({\dot {\varepsilon }_{EOP}}\)</EquationSource> </InlineEquation>) at the end of primary (EOP) consolidation based on Terzaghi’s consolidation theory. The results of finite element analysis as well as the results of applying the method to some reported test data and analyzed cases in the literature indicate the method is an effective and practical one.</p>

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A Pragmatic Method for Calculating Creep Deformation During Primary Consolidation Using Modified Yield Stress

  • 期刊论文

  • 发表日期：

    2026年6月29日

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  • Jinchun Chai,
  • Qichang Wu,
  • Yafei Qiao,
  • Wenqi Ding,
  • Takenori Hino

摘要

A pragmatic method for considering creep deformation during the process of primary consolidation is proposed. The main point of the method is using a modified yield stress in the calculation of consolidation settlement with conventional method. The modified yield stress is evaluated by a well-documented strain rate–yield stress relationship, which is based on isotache concept, and a newly proposed method for evaluating the plastic strain rate ( \({\dot {\varepsilon }_{EOP}}\) ) at the end of primary (EOP) consolidation based on Terzaghi’s consolidation theory. The results of finite element analysis as well as the results of applying the method to some reported test data and analyzed cases in the literature indicate the method is an effective and practical one.