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目前挡土结构侧土压力计算方法中 ,一般未考虑挡土结构位移对土压力的影响。而控制挡土结构位移 ,使土体不能达到极限平衡状态 ,正是实际基坑工程中的常见情况。本文通过一定数量的室内模型试验研究 ,对不同挡土结构位移下 ,侧土压力由静止土压力逐步向主动土压力发展过程进行了测定 ,得出挡土结构位移和侧土压力强度值间的关系 ,提出了一种考虑挡土结构侧向位移的侧土压力简化计算方法。
At present, the calculation method of earth pressure on the side of retaining structure generally does not consider the influence of retaining structure displacement on earth pressure. The control of retaining structure displacement, so that the soil can not reach the limit equilibrium state, it is common in the actual pit project. In this paper, through a certain number of indoor model tests, the lateral earth pressure is gradually measured from the rest earth pressure to the active earth pressure under the displacement of different retaining structures, and the relationship between the displacement of the retaining earth structure and the lateral earth pressure intensity A simplified method for calculating lateral soil pressure considering the lateral displacement of retaining structure is proposed.