蜂巢砌块挡土墙结构安全性分析

Safety Analysis of Retaining Wall Structure in Honeycomb Block

摘要: 蜂巢砌块挡土墙是一种生态型挡土墙，从结构上来看它结合了重力式挡墙和悬臂式挡墙的优点，具有施工快速简便、质量可控、外形美观，而且具有极佳的生态效应等优点。本文应用有限元法分析蜂巢砌块挡土墙墙背土和结构之间的非线性接触压力分布，从而确认这种生态挡墙的结构稳定性。结果表明，蜂巢砌块挡土墙墙背土压力会发生土拱现象，1/3高度附近土压力高于主动土压力，但是土压力合力以及作用点和库伦主动土压力基本一致。墙体应力分布和悬臂梁受弯类似，砌块拼接处会发生应力集中。

Abstract: Retaining wall in Honeycomb block is an ecological retaining wall. It combines the advantages of gravity retaining wall and cantilever retaining wall from the structural point of view. It has the advantages of quick and convenient construction, controllable quality and beautiful appearance, and excellent ecological effects and other advantages. In this paper, the finite element method is used to analyze the nonlinear contact stress distribution between the soil and the structure of the retaining wall in honeycomb block to confirm the structural stability of the ecological retaining wall. The results show that the soil arching phenomenon occurs in the soil pressure behind the retaining wall of the honeycomb block. The soil pressure near the height of 1/3 retaining wall is higher than the active earth pressure, but the combined force of the soil pressure and the action point and the Coulomb active earth pressure are basically the same. The stress distribution of the wall is similar to that of the cantilever beam, and stress concentration occurs at the joint of the block.