桂林粘土应力—应变关系归一化性状研究  

Normalized Stress-strain Character of Guilin Clay

作　　者：赵鑫[1] 陈学军[2] 王经[2] 王经国[2] 

机构地区：[1]中国地质大学(武汉)工程学院,武汉430074 [2]桂林理工大学土木与建筑工程学院,广西桂林541004

出　　处：《建筑科学》2011年第1期53-55,共3页Building Science

基　　金：广西建筑工程检测与试验重点实验室基金课题(桂科能07109005-B)

摘　　要：本文通过对桂林粘土的固结不排水三轴剪切试验,基于典型的双曲线方程,从理论上推导了为实现应力—应变方程归一化而必须满足的归一化条件,并提出了用主应力差渐近值作为标准归一化因子。同时,运用标准归一化因子,建立了桂林粘土固结不排水条件下应力—应变特性的归一化方程。利用求得的归一化方程对不同围压下的应力—应变关系进行归一化分析,并与试验实测数据进行比较,可以得出用主应力差渐近值作为标准归一化因子,粘土的应力—应变特性归一化程度高,可以很好的预测出不同围压下的应力—应变关系。By the consolidated undrained triaxial shear test of Guilin clay,a new normalized condition is derived theoretically based on hyperbola function for the normalization of its stress-strain relationship.In this condition,the concept of standard normalized factor,which is defined as the ultimate value of principal stress difference,is introduced.Meanwhile,with the standard normalized factor,the normalized equation of Guilin clay under consolidated undrained condition is established.Compared with the real data of test,by the normalized equation analysis of the stress-strain relationship under different confining pressures,the standard normalized factor is good at normalizing the stress-strain relationship of the clay,and could predict the stress-strain relationship under different confining pressures.

关 键 词：桂林粘土 固结不排水三轴试验 应力—应变关系 归一化方程 

分 类 号：TU521.3[建筑科学—建筑技术科学] TU411.7