A Failure Criterion of Cohesion less Soils

KONG De-zhi; ZHU Jun-gao

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A Failure Criterion of Cohesion less Soils

更新时间：2026-06-25

- A Failure Criterion of Cohesion less Soils
- Vol. 26, Issue 1期　刊出日, (2005)
- 作者机构：
  
  河海大学岩土工程研究所,江苏,南京,210098
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU43
- Online First：07 November 2013，
  
  Published：2005
- 稿件说明：
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KONG De-zhi, ZHU Jun-gao. A Failure Criterion of Cohesion less Soils[J]. 2005, 26(1期　刊出日).
DOI：

KONG De-zhi, ZHU Jun-gao. A Failure Criterion of Cohesion less Soils[J]. 2005, 26(1期　刊出日). DOI：

摘要

研究表明，在三轴压缩和伸长试验条件下，土的抗剪强度与莫尔-库仑准则是一致的，而对于一般应力状态下，土体破坏时的应力状态与莫尔-库仑准则有一定的出入。结合以往的真三轴试验结果，建议了一个复杂应力状态下的等效内摩擦角，在此基础上提出了一个考虑中主应力影响的无粘性土（c＝0）的破坏准则。通过和真三轴试验结果比较，发现该准则在π平面内比莫尔-库仑准则更接近于试验结果。该准则有望推广应用到粘性土中。

Abstract

Studies have indicated that the shear strength of soils is influenced by the intermediate principle stress. Generally

the shear strength of soils is correspondent with Mohr-Coulomb criterion under the condition of compression and extension in triaxial tests; but in the condition of three-dimensional stresses

soils have a higher shear strength

and the failure points on π-plane are beyond Mohr-Coulomb criterion. Based on true triaxial tests

this paper proposes an angle of equivalent internal friction and a failure criterion for cohesionless soils. The criterion can take into account the influence of intermediate principle stress. Compared with the results of true triaxial tests

it is found that this failure criterion is better than Mohr-Coulomb criterion. It is promising that the failure criterion can be applied to the cohesive soils in the future.

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