Correlation between mechanical properties of marine soft clay and stress path
XIONG Chun-fa1, KONG Ling-wei1, YANG Ai-wu1, 2
1. State Key Laboratory of Rock and Soil Mechanics and Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. Civil Engineering College, Tianjin Chengjian University, Tianjin 300380, China
Abstract:Through triaxial tests on different stress ratios under consolidated and undrained conditions, the correlation among stress-strain curve of undisturbed marine soft clays, tangent modulus, pore pressure and stress path is discussed. The results show that, under the same consolidation pressure, when the direction angle of the stress path increases, the tangent modulus will increase, the ultimate strength will change from increasing to decreasing and reach the peak value in the range of θ=0.44π~0.56π. There is a linear relationship between the unit pore pressure caused by shear stress and the unit pore pressure caused by isotropic stress. When the direction angle of the stress path increases, the pore pressure will change from positive to negative, and the ratio of the pore pressure caused by isotropic stress to the shear stress will decrease linearly.
熊春发, 孔令伟, 杨爱武. 海积软黏土力学特性与应力路径的关联性研究[J]. 岩土工程学报, 2013, 35(zk2): 341-345.
XIONG Chun-fa, KONG Ling-wei, YANG Ai-wu. Correlation between mechanical properties of marine soft clay and stress path. Chinese J. Geot. Eng., 2013, 35(zk2): 341-345.
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