基于强度折减法的深基坑开挖坑底稳定性分析

基于强度折减法，对基坑的稳定性问题进行了分析，讨论了影响基坑稳定性的主要因素，分析表明：利用强度折减有限元方法得到的安全系数要高于传统的极限平衡方法计算得到的坑底稳定安全系数，土体渗透系数、围护结构插入深度等对安全系数均有影响。

Analysis of stability of excavation based on method of reduced shear strength

Based on the method of reduced shear strength,the stability question of the foundation pit is analyzed,this paper discusses the main factors base stability of pit excavations.The analysis indicate: the safety factor calculated by the method of reduced shear strength is higher than the one by the traditional limit equilibrium method.The permeability coefficient and depth of penetration of diaphragm wall have influence on the stability.