土工基础

›› 2013, Vol. 27 ›› Issue (6): 107-110.

• 工程实录 • 上一篇    下一篇

广州粘土真三轴试验研究

张新涛1，杨雪强1，汪仕旭2   

  1. (1.广东工业大学 土木与交通工程学院，广州 510006;2.广东交通实业投资有限公司,广州 510000）
  • 收稿日期:2013-01-15 出版日期:2013-12-20 发布日期:2013-12-21
  • 作者简介:张新涛(1986-)，男，硕士研究生，研究方向为结构性粘土屈服面和塑性势发展研究。

True Triaxial Shear Testing on a Guangzhou Clay

ZHANG Xintao1, YANG Xueqiang1， WANG Shixu2   

  1. （1.Faculty of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006；2.Guangdong Communications Industrial Investment Co., Ltd.,Guangzhou 510000）
  • Received:2013-01-15 Online:2013-12-20 Published:2013-12-21

摘要： 通过对广州原状粘土不同围压和不同中主应力系数下的固结不排水真三轴剪切试验，分析结构性粘土在固结不排水剪切状态下的应力与应变、强度与变形特性，并研究偏应力、孔隙水压力，应力比，有效主应力比值随不同围压和中主应力系数的变化规律。

关键词: 结构性粘土, 真三轴, 不排水剪切, 中主应力系数

Abstract: A series of true triaxial shear tests on undisturbed Guangzhou clay under different cell pressures and intermediate principal stress coefficients are performed on a true triaxial apparatus. The stress-strain, strength and deformation characteristics of the undisturbed clay under the consolidated undrained state are evaluated. The deviatoric stress, pore water pressure, stress ratio as well as the effective principal stress ratio with the coefficient of variation of principal stress are also studied.

Key words: Structural Clay, True Triaxial Testing Appratus, Undrained Shear Test, Intermediate Principal Stress Coefficient