多级挡土墙下墙主动土压力及稳定性分析

摘要

With a multistage retaining wall engineering built in the hillside as an example,to the soil wedge acting on the lower part of the multi-stage retaining wall,the first fracture plane was determined by actual situation,the second frac-ture plane and its active earth pressure were obtained by graphical method based on Coulomb’ s earth pressure theory,over-turning stability,anti-slip stability and bearing capacity of the foundation were subjected to checking as well. The retaining wall has been built more than two years,now used in good condition,showing that the analysis method is feasible.%以某一建造于山坡上的多级挡土墙工程为例，对作用在多级挡土墙下墙后的土楔体，在按实际确定第一破裂面的情况下，采用基于库伦土压力理论的图解法确定第二破裂面并求得其主动土压力，进行抗倾覆、抗滑移稳定性以及地基承载力验算。挡土墙建成已有两年多的时间，使用情况良好，表明该分析方法合理可行。