加筋土挡墙侧向变形的影响因素分析

摘要

基于铁路路基支挡工程，以正交设计方法为基础，采用有限差分法分析了6个工程因素对加筋土挡墙侧向变形的影响。分析结果表明：填料摩擦角和格栅刚度对加筋土挡墙侧向变形影响显著，格栅长度、格栅竖向间距以及墙顶荷载有较明显影响；地基体积模量的影响不明显。根据计算分析结果提出加筋土挡墙设计的相关建议。%Based on a railway embankment retaining engineering,the effects of six engineering factors on the lateral deformation of reinforced earth retaining wall were analyzed by using the finite element difference method. Analysis results show that the packing friction angle and the geogrid stiffness are the significant factors influencing the lateral deformation of the reinforced earth retaining wall. T he length of the grating,the vertical spacing of the grid and the load on the top of the wall have obvious influence. T he bulk modulus of foundation is not sensitive to the reinforced earth retaining wall. According to the calculation and analysis results,some suggestions on the design of reinforced earth retaining w all w ere proposed.