摘要
采用英国GDS变围压动三轴系统对温州饱和软粘土分别进行了应力路径斜率η=1/3时不同初始有效固结围压的静力试验和不同应力路径的静力试验,研究了不同条件下温州饱和软粘土的强度特性。试验结果表明,不同初始有效固结围压和不同应力路径的温州饱和软粘土均呈应变硬化规律,且呈非线性;随着初始有效固结围压的增加,土体的强度在增加;应力路径斜率η=1/3时不同初始有效固结围压下,土体所呈现的变化曲线具有相似性。
The Stress path tests on saturated Wenzhou soft clays were conducted on the GDS dynamic triaxial testing system with variable confining pressures. Tests are performed with the slope of the stress path is set to be 1/3 with different initial ef- fective confining stress and with various stress paths. The test results indicate that, the nonlinear strain hardening phenomena can be observed in different initial effective confining pressures and different stress paths. With the increase of initial effective consolidation pressure, the strength of the soft clay increases. Under a stress path slope of 1/3, all soil hardening curves are similar.
出处
《土工基础》
2016年第3期387-390,共4页
Soil Engineering and Foundation
关键词
软粘土
应力路径
静力特性
GDS动三轴
有效固结围压
Soft Clays
Stress Path
Strength Characterization
Dynamic Triaxial Testing Equipment
Effective Consolidation Pressure
