非饱和土剑桥模型的基本框架

A Basic Framework of Cambridge Model for Unsaturated Soil

分析了用有效应力原理和用两个应力变量建立非饱和土力学理论的区别与联系，借助于有效应力原理将饱和土的剑桥模型推广到非饱和土，并与现有的几种弹塑性模型作了对比分析。

The distinction and relation between the Principle of effective stress and the theory ofunsaturated soil established on the basis of two stress state variables are discussed. The Cambridge model isexpanded to the case of unsaturated soil by the use of effective stress. The comparison between this modeland old elastoplastic models is given.