摘要
Failure criterion of saturated soft clay is studied under cyclic loads through different experiments. A large number of cyclic torsional shear and cyclic triaxial tests on saturated soft clay under unconsolidated undrained condition are conducted. From the test result analysis, it is seen that the failure of saturated soft clay under static and cyclic loads satisfies Mises criterion. The result from different test stress states is not related to the test stress states or confining pressures. It can be applied in general stress states. Then according to the Mises criterion, the equivalent relationship on failure moment between the test stress state and the general stress state can be established. So the cyclic mechanics characteristics of saturated soft clay at failure moment are clarified in this paper. Furthermore, a theory basis is provided for using pseudo-static elasto-plastic cyclic strength model to evaluate cyclic bearing capacity.
浸透的软泥土的失败标准通过不同实验在周期的负担下面被学习。很多周期扭力砍，在 unconsolidated undrained 状况下面的浸透的软泥土上的周期的 triaxial 测试被进行。从测试结果分析，在静态、周期的负担下面的浸透的软泥土的失败满足协定标准，这被看见。来自不同测试压力状态的结果不与测试压力状态或限制压力有关。它能处于一般压力状态被使用。然后根据协定标准，在在测试压力状态和一般压力状态之间的失败时刻的相等的关系能被建立。在失败时刻的浸透的软泥土的周期的力学特征因此在这篇论文被澄清。而且，一个理论基础用伪静电干扰被提供 elasto 塑料的周期的力量模型评估周期的适用的能力。
基金
Supported by National Natural Science Foundation of China(No. 50379035)
作者简介
LI Chi, born in 1973 ,female,doctorate student, E-mail：tjdxlch 2003@126.com.
