摘要
以渭北张桥非饱和原状黄土为对象,进行了增湿湿陷试验。由试验测得湿陷体应变与球应力(shve-p)、湿陷体应变与基质吸力[shve-(au-wu)]曲线和湿陷剪应变与剪应力(shse-q)、湿陷剪应变与基质吸力[shse-(au-wu)]曲线,确定出有效球应力参数xp和有效剪应力参数xq的湿陷体应变与湿陷有效球应力参数的shve-px曲线和湿陷剪应变与湿陷有效球应力参数(shse-qx)曲线,进而得到非饱和原状黄土增湿有效应力的变化规律。
In this paper,the collapse test with increasing moisture for Weibei Zhangqiao unsaturated loess is studied. The curves of shve-p,shve-(au-wu),shse-q,as well as shse-(au-wu) are obtained respectively. The parameters defining effective stresses,xp and xq,are determined through curves of shve-px and shse-qx. Using these results,the variation of effective stresses under collapse condition with increasing moisture for unsaturated intact loess can be estimated.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2004年第7期1100-1103,共4页
Chinese Journal of Rock Mechanics and Engineering
基金
国家863计划项目(2001AA242071)资助课题。
关键词
土力学
非饱和黄土
增湿湿陷
有效应力
剪应力
soil mechanics,unsaturated loess,increasing moisture collapse,effective stress
