摘要
在采用杭州饱和软粘土进行室内三轴试验模拟基坑开挖时应力路径的基础上 ,分析了m参数随应力路径、应力水平、应变方向的变化规律 ,获得了考虑应力路径影响的土体的本构模型 ,同时提出了用抗剪强度法确定m参数 ,并探讨了基坑开挖全过程设计中m的选取问题。
The method how to determinate m coefficient by m method during excavation is discussed,a new constitutive model which is considered by the influence of stress paths is constructed at the same.At last,a conclusion is drawed that the safe degree calculated by modified m coefficient is lower than one which is calculated by unmodified m coefficient.
出处
《工业建筑》
CSCD
北大核心
2000年第9期46-51,共6页
Industrial Construction
关键词
m参数
饱和软粘土
本构模型
基坑开挖
m coefficient\ saturated soft clay\ constitutive model\ undrained shear strength\ all course design during excavation
