土体结构性对软粘土动应变特性的影响  

The influence of soil structural status on dynamic strain of soft clay

作　　者：陈颖平[1] 

机构地区：[1]福建船政交通职业学院建筑工程系,福建福州350007

出　　处：《苏州科技学院学报（工程技术版）》2013年第1期22-25,共4页Journal of Suzhou University of Science and Technology （Engineering and Technology）

基　　金：福建省教育厅基金资助项目(JA09263)

摘　　要：对杭州某粘土原状样和重塑样,以及掺2%水泥的重塑样进行循环荷载作用下的动力特性差异研究,发现土体的结构性强弱对土体的动应变特性有很大影响,尤其是在动应力较小的情况下。应变发展存在一个突然增大的临界点,软粘土宜以应变是否达到该临界值作为破坏与否的判别标准。This paper presented a study on the dynamic triaxial of the natural clay （derived from Hangzhou）, re- molded clay and cemented clay by the same density under effect of cyclic loading, the result shows that the structure of clay plays an important role in the curves of dynamic strain-cyclic number, especially under a small dynamic stress. The strain curves with the cycle number of natural and remolded clay have all critical points over which the samples would be destructed. It＇s proper for the soft clay to adopt this critical value as the soil＇s failure criterion.

关 键 词：循环荷载 软粘土 结构性 动应变 

分 类 号：U412.36[交通运输工程—道路与铁道工程]