互锚式挡土墙土压力分布规律研究  

Research on Soil Pressure Distribution Regulations of Mutual Anchoring Retaining Wall

作　　者：厉超[1,2] 孟庆宇[1] 解全一 

机构地区：[1]山东大学土建与水利学院,济南市250061 [2]山东省路基安全工程技术研究中心,济南市250061

出　　处：《公路》2015年第7期16-20,共5页Highway

基　　金：国家自然科学基金;项目编号51208284

摘　　要：互锚式挡土墙具有整体性好、抗震能力强等特点,但由于锚杆的互锚作用,其土压力的分布规律较传统挡墙差异很大。为研究互锚式挡土墙的土压力分布规律,进行了室内模型试验和FLAC3D数值计算。模型试验在墙后不同填土深度埋设土压力盒,监测了墙不同填土高度的竖向土压力、侧向土压力以及土压力的横向分布。对照模型试验结果,利用FLAC3D数值计算对模型试验结果进行了验证。结果表明:互锚式挡土墙土压力分布存在明显的三维土拱效应;竖向土压力、侧向土压力和横向土压力均呈非线性分布;竖向和侧向土压力的峰值出现在锚杆附近。Mutual anchoring retaining wall has the advantages of good integrity, strong seismic ability and etc.. Due to the pull effects of the anchor, the distribution of soil pressure varies widely compared to the traditional retaining wall. In order to explore soil pressure distribution regularities of mutual anchoring retaining wall, an indoor model test is made and numerical calculation with FLAC3D is carried out. Soil pressure boxes are buried in different position of the wall to monitor the vertical soil pressure, lateral soil pressure and horizontal soil pressure of the retaining wall. And the result of indoor model test is verified by calculation of FLAC3D. Results show that there is obvious soil arch effect with mutual anchoring retaining wall; the vertical soil pressure, lateral soil pressure and horizontal earth pressure appear nonlinear distribution, the peak points of lateral and horizontal soil pressure appear near the height of the anchors.

关 键 词：互锚式挡土墙 土压力 分布规律 土拱效应 FLAC3D 

分 类 号：U417.11[交通运输工程—道路与铁道工程]