各向异性条件下深基坑抗隆起稳定性分析

Analysis of Resistant Heave Stability for Deep Excavations Considering Anisotropic Behavior of Clays

考虑初始不等压固结状态引起的不排水剪强度的各向异性；把在本构方程基础上得到的正常固结和超固结粘土的不排水剪强度应用到深基坑开挖抗隆起稳定的分析中，得到稳定安全系数公式，针对典型上海软土进行分析，并以工程实例加以验证．

In this paper, the anisotropy of undrained shear strength induced by initial anisotropic stress state is taken into consideration.Based on the constitutive equation of the anisotropic clays, the theoretical values of the undrained shear strength of normally consolidated and slightly overconsolidated clays can be obtained. Using the theoretical strength results for the analysis of resistant heave stability for deep excavations, the safety factor of stability can be achieved and the analysing method is verified by the practical engineering example.