摘要
利用GDS多功能三轴仪对饱和粘性重塑土分别进行了不同K0状态下的CU试验和K0=0.7时不同围压状态下的CU试验,探讨不同应力路径下粘性土的变形和强度特性。试验表明:不同应力路径下的土的应力—应变关系都呈曲线形态相似的非线性应变硬化型;随着固结应力比K0的增加,应力—应变关系曲线初始坡度逐渐由缓变陡;饱和粘性土不排水试验中:ε3=(1/(1-ε1))^(1/2)-1。
The multifunction-GDS triaxial apparatus was used to do the consolidated undrained triaxial test for the remodeling saturated soil in different states of K0 and under different confining pressures when K0 = 0.7. The differences and commons were found when the remodeling saturated soil was tested in different stress paths. The results show that the stress-strain curve shape appears similar to non-linear hardening in different stress paths; with consolidation stress ratio（K0） increasing the initial slope of the stress-strain curves changes gradually from gentle slope to steep; for the saturated clay the undrained tests have such relationship： ε3=√1/（1-ε1）-1.
出处
《建筑科学》
北大核心
2010年第1期47-49,55,共4页
Building Science
基金
国家自然科学基金资助项目(No.50608038)
关键词
CU试验
不同K0状态
饱和粘性土
应力路径
轴向应变
径向应变
consolidated undrained triaxial test
different states of K0
saturated clay
stress path
axial strain
radial strain
