摘要
基于硬化土模型(HS模型)只能描述土体应变硬化行为和刚度线性软化现象,提出了考虑刚度非线性软化的修正硬化土模型。
The Hardening Soil （HS） model can only describe the behavior of strain hardening and the linear degradation of stiffness of the soil. A modified HS model was developed to consider the nonlinear degradation of stiffness. The initial backbone curve in the modified HS model was described by using segmented power function and the influences of the initial static deviator stress and loading rate are also considered. of q / qf and Es / E50^ref , The modified HS model can describe the nonlinear degradation of stiffness, the behavior of strain softening and strain hardening under different initial static deviator stress and loading rate. The modified HS model is verified against the traxial testing results for Hangzhou clay.
出处
《工程力学》
EI
CSCD
北大核心
2013年第8期78-82,共5页
Engineering Mechanics
关键词
HS模型
初始骨干曲线
应力应变关系
刚度软化
应变软化
HS model
initial backbone curve
stress-strain relation
stiffness degradation
strain softening
