均质地基上浅埋矩形基础极限承载力上限分析

基于土体塑性极限分析理论,推导一般黏性土地基上矩形基础承载力的上限解。为了证实上限解的合理性与适用性,采用大型通用有限元分析软件ABAQUS进行数值分析,并分别与Vesic理论解和Salgado et al理论解进行了对比。结果表明,推导的三维矩形基础上限解能较好地计算黏性土地基的极限承载力。

Upper bound limit analysis of bearing capacity of rectangular shallow footing on homogeneous clays

Presented in this paper is a rigorous upper-bound solution of bearing capacity of rectangular shallow footing based on the compatible velocity field.In order to verify the rationality and applicability of this theoretical solution,numerical solution is achieved by using the general-purpose FEM analysis package ABAQUS and comparison is made among upper-bound solution,the solution of Vesic method and the solution of Salgado et al method.The results indicate that the upper-bound solution of the three-dimensional rectangular shallow footing predicted in this paper is accurate.