重塑饱和亚粘土应力应变关系的非线性模型

本文通过两个状态边界面的概念,并利用正常压密粘土典型的规格化性状,建立了描述土的应力应变关系的一个非线性模型。该模型既能反映土的应力应变非线性,又能反映球应力和偏应力对应变的交叉影响。并引出了描述土的变形特性的四个模量的概念,认为用四个模量描述土的应力应变关系是合理的。

The Stress-strain Relationship Model for Remoulded Saturated Clay-loam

In this paper, according to the concept of two state boundary surfaces and using typical normaliztd behaviour of normally compressed clay, a nonlinear model of soil stress-strain relationship is developed. The model can reflect both nonlinear behaviour of stress-strain relationship of soil and cross effect of spherical stress and deviatoric stress on the strain.Four moduli describing properties of deformation of soil are introduced.It seems reasonable to describ soil stress-strain relationship by four moduli.