Evaluation of effect of intermediate principal stress on sand shear strength

LIU Jin-long; LUAN Mao-tian; YUAN Fan-fan; WANG Ji-li; XU Cheng-shun

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Evaluation of effect of intermediate principal stress on sand shear strength

更新时间：2026-06-25

- Evaluation of effect of intermediate principal stress on sand shear strength
- Vol. 26, Issue 12, (2005)
- 作者机构：
  
  1. 中国科学院武汉岩土力学研究所,武汉,430071
  2. 大连理工大学海岸和近海工程国家重点实验室,大连,116024
  3. 大连理工大学土木水利学院岩土工程研究所,大连,116024
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU432
- Online First：12 January 2014，
  
  Published：2005
- 稿件说明：
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LIU Jin-long, LUAN Mao-tian, YUAN Fan-fan, et al. Evaluation of effect of intermediate principal stress on sand shear strength[J]. 2005, 26(12).
DOI：

LIU Jin-long, LUAN Mao-tian, YUAN Fan-fan, et al. Evaluation of effect of intermediate principal stress on sand shear strength[J]. 2005, 26(12). DOI：

摘要

土的抗剪强度参数一般通过三轴压缩试验确定。而三轴压缩试验中土的应力状态是轴对称的，这往往与实际工程中土体的受力情况不相同。因此，探讨一般应力条件下与三轴应力条件下强度指标之间的相互关系是至关重要的。基于砂土的空间滑动面强度准则即SMP准则，针对不同中主应力系数，通过数值分析探讨了中主应力系数对砂土抗剪强度指标的影响。分析结果表明，中主应力对土的抗剪强度指标具有显著的影响，一般地在平面应变条件下这种影响最大。

Abstract

The shear strength parameters of soils are conventionally obtained by soil triaxial compression tests in laboratory. However

the soils in engineering practice are not always in axisymmetric stress state as in conventional triaxial compression tests. Therefore

it is important to examine the inter-relationship between strength parameters under different stress states. Based on the spatial mobilization plane failure criterion proposed by Matsuoka and Nakai

the strength parameters for different intermediate principal stresses are generally compared. It is demonstrated that the intermediate principal stress ratio has a considerable effect on shear strength parameters of soils; and the effect will be the most significant under plane-strain condition.

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