不同含水率下滑带土的力学特性研究

Study on mechanical properties of sliding zone under different water contents

通过中剪试验和侧限压缩试验,研究同一干密度、不同含水率条件下滑带土的抗剪强度、内聚力、摩擦系数和侧限压缩试验中孔隙比、压缩系数、压缩模量的变化规律等。结果表明:随着含水率的增加,抗剪强度呈线性减小,内聚力和摩擦系数减小,可用对数方程表示。孔隙比、压缩系数和压缩模量变化显著,但敏感性有所不同。

Through the shear test and the confined compression test,this paper studied the change rule of the shear strength of soil,cohesion,friction coefficient and confined compression test of void ratio,compression coefficient and compression modulus under the condition of same dry density and different moisture content. Results show that with the increase of moisture content,the shear strength linearly decreases,and cohesion and friction coefficient decreases,which can be expressed by logarithmic equation. Void ratio,compression coefficient and compression modulus changes significantly,but the sensitivity is different.