Formula of intermediate principal stress at failure for Mohr-Coulomb material in plane strain state

DENG Chu-jian; ZHENG Ying-ren; ZHU Jian-kai

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Formula of intermediate principal stress at failure for Mohr-Coulomb material in plane strain state

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- Formula of intermediate principal stress at failure for Mohr-Coulomb material in plane strain state
- Vol. 29, Issue 2, (2008)
- 作者机构：
  
  后勤工程学院,重庆,400041
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU443
- Online First：10 July 2013，
  
  Published：2008
- 稿件说明：
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DENG Chu-jian, ZHENG Ying-ren, ZHU Jian-kai. Formula of intermediate principal stress at failure for Mohr-Coulomb material in plane strain state[J]. 2008, 29(2).
DOI：

DENG Chu-jian, ZHENG Ying-ren, ZHU Jian-kai. Formula of intermediate principal stress at failure for Mohr-Coulomb material in plane strain state[J]. 2008, 29(2). DOI：

摘要

基于Mohr-Coulomb准则，通过引入罗德角参数及Mohr-Coulomb准则平面应变等效广义Mises准则，推导了平面应变条件下材料屈服时的中主应力公式，并给出其与基于SMP准则（Spatial Mobiliaztion Piane）的平面应变中主应力公式之间的关系式。对平面应变条件下的条形地基进行了有限元数值模拟，计算结果验证了所推导的平面应变条件下M-C材料屈服时的中主应力公式的正确性，其公式为岩土体的强度和变形分析、中主应力的强度效应的进一步研究，以及Mohr-Coulomb准则的修正提供了有力的基础。

Abstract

Based on Mohr-Coulomb yield criterion

the Formula of Intermediate principal stress at failure of Mohr-Coulomb material in plane strain state was obtained by analyzing the Lode angle parameter and the general Mises yield criterion matched Mohr-Coulomb yield criterion in plane strain state

which helps to study the strain-stress of geotechnical materials and the strength effect of intermediate principal stress and also helps to modify Mohr-Coulomb yield criterion. Second

the relation of intermediate principal stress at failure in plane strain state between Mohr-Coulomb material and SMP material is put forward. Finally

a foundation under plane strain condition was analyzed by FEM; and the computational results shows that the formula is correct.

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