组合支挡结构有限土体土压力计算方法分析

Analysis of the Calculation Method of Earth Pressure in Limited Soil of Combined Retaining Structure

摘要: 对于由重力式挡土墙与桩板墙组成的组合支挡结构而言，其土压力计算是一个复杂的过程。在有限土体部分，采用经典土压力求解理论往往导致计算结果偏大，从而引起工程资源的浪费。为解决这一问题，本文基于平行墙理论对组合支挡结构中的有限土体区域建立了计算模型，并进行了受力分析，推导出了土压力计算公式。通过室内模型试验验证了该方法的准确性，为更精准地计算组合支挡结构土压力提供了一种可行的解决方案。

Abstract: For a combined retaining structure consisting of gravity retaining wall and sheet pile wall, the calculation of soil pressure is a complex process. In limited soil regions, employing classical soil pressure theories often leads to overestimated results, causing unnecessary utilization of engineering resources. To address this issue, this paper establishes a computational model based on the parallel wall theory for the limited soil zone within the combined retaining structure. Force analysis is conducted, resulting in the derivation of a soil pressure calculation formula. The accuracy of this method is validated through indoor model experiments, providing a feasible solution for a more precise calculation of soil pressure in combined retaining structures.