岩土本构关系的特殊性和统一性

在阐明岩土塑性变形的基本特殊性,特别是应力应变关系与应力路径相关性,产生机理的基础上,明确指出了导致这些特性的内在的共同的根源是,岩土塑性变形中存在两个相对独立的变形,即体积应变和剪切应变,两者之间存在着强烈的非线性的相互作用.这种耦合作用造成岩土的力学响应不仅具有多样性和复杂性,而且也具有内在的统一性.

Particularity and Unity of the Constitutive Relations for Rock and Soil

The mechanism of generating the basic characteristics of plastic deformation for rock and soil, especially the dependence of stress-strain relation on stress path, is explained. It is pointed out that the inherent and common origin leading to these characteristics is that there exist two relatively independent strains in plastic deformations of rock and soil, volumetric and shear strains, and the strong and nonlinear interaction between both ones. Just this coupling makes the mechanical responses for rock and soil not only variety and complexity but also inherent unity.