Strength property of Shanghai clay in true triaxial tests

SHENG Jia-ren; WU Chao-jun; YE Guan-lin; WANG Jian-hua

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Strength property of Shanghai clay in true triaxial tests

更新时间：2026-06-25

- Strength property of Shanghai clay in true triaxial tests
- Vol. 34, Issue 1, (2013)
- 作者机构：
  
  上海交通大学土木工程系,上海,200240
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU411
- Online First：10 January 2013，
  
  Published：2013
- 稿件说明：
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SHENG Jia-ren, WU Chao-jun, YE Guan-lin, et al. Strength property of Shanghai clay in true triaxial tests[J]. 2013, 34(1).
DOI：

SHENG Jia-ren, WU Chao-jun, YE Guan-lin, et al. Strength property of Shanghai clay in true triaxial tests[J]. 2013, 34(1). DOI：

摘要

利用自主改造的、大主应力与小主应力方向由刚性加压板加载、中主应力方向由围压室液压加载的自动控制刚柔复合真三轴仪，对上海原状软土进行同一π面上不同洛德角真三轴固结排水剪切试验。原状土样通过分块抽样法获取，共进行了5组不同洛德角（0°、15°、30°、45°和60°）排水剪切试验。试验结果显示，上海原状软土抗剪强度、屈服和破坏点位置随洛德角的增大而减小，体积变化量先增大后减小。三向应力状态下上海软土的破坏强度接近空间滑移面（SMP）破坏准则。

Abstract

A series of isotropic consolidated drained true triaxial tests with different Lode angles in the same π plane are carried out with an automatic controlled mixed boundary true triaxial apparatus. The maximum and minor principal stresses are applied by two pairs of rigid platens; and the intermediate principal stress is applied by water pressure in triaxial cell. Undisturbed soil sample is prepared by block sampling method; and totally 5 drained tests with different Lode angles (0°

15°

30°

45°

60°) are presented. Test results show that the shear strength

the yielding & failure points of Shanghai soft clay decrease while Lode angles increase. The volume change increases first and turns to decrease when Lode angle is larger than 30°. In general

three-dimensional strength of the Shanghai soft clay obeys the SMP (spatial mobilized plane) failure criterion.

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