Small-strain behaviour of standard sand by stress path controlled triaxial tests

SHI Jian-yong; LAI Yong; LEI Guo-hui; AI Ying-bo

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Small-strain behaviour of standard sand by stress path controlled triaxial tests

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- Small-strain behaviour of standard sand by stress path controlled triaxial tests
- Vol. 28, Issue 4, (2007)
- 作者机构：
  
  河海大学岩土工程研究所,南京,210098
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU411.3
- Online First：05 September 2013，
  
  Published：2007
- 稿件说明：
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SHI Jian-yong, LAI Yong, LEI Guo-hui, et al. Small-strain behaviour of standard sand by stress path controlled triaxial tests[J]. 2007, 28(4).
DOI：

SHI Jian-yong, LAI Yong, LEI Guo-hui, et al. Small-strain behaviour of standard sand by stress path controlled triaxial tests[J]. 2007, 28(4). DOI：

摘要

通过应力路径三轴试验，将标准砂样分别K0固结和等向固结到平均球应力150 kPa，在p-q平面内沿0o，45o，90o，135o，180o，225o，270o，315o应力路径方向进行16组试样的应力应变关系试验研究，对当前应力路径、前期应力路径、应力路径旋转条件下1 %范围内剪应变和体积应变规律进行了对比分析。由试验曲线整理得到的剪切模量和体积模量随应力路径变化规律与已有的Bothkennar黏土试验结果类似。

Abstract

By stress path controlled triaxial tests

the stress-strain curves of 16 standard sand specimens

which were tested along directions 0o

45o

90o

135o

180o

225o

270o

315o in p-q plane after isotropic and K0 consolidation to a same mean effective stress 150kPa

are presented. The shear and volumetric strains less than 1 % are compared by considering effects of recent stress path

historic stress path and stress path rotation. The change laws of shear and volumetric moduli of standard sand tests with the direction of stress path are found to be similar with the reported test results of Bothkennar clay.

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