应力路径对砂土应力应变关系的影响

Effects ofStress Path on Stress-Strain BehaViour of Sand

本文在试验的基础上，对平面应变状态下风化砂不同应力路径的应力变关系进行了分析。表明等应力比路径上的应力应变符合幂函数关系；Ｋ＿０固结后不同应力路径可用双曲线关系表示文中还探讨了模型参数的变化规律。本文所得的结果可用于非线性分析。

In this papor,the stress-strain behaviour of weathered sand under different stress paths in the planestrain condition is analyed。The stras-strain relations under stress paths of constant stress ratio can be modellde with power function,Under several stress peths after Ko-consolidstion,the stress strain laws are described with amodified hyperbolic curve。The variation of model parameters is discussed。The prperoed model can be utiIized tosimulate the effects of stress path in stres-strain analysis of soil。