多级重力式挡土墙施工变形数值模拟  

Numerical Simulation of Deformation of Multistage Gravity Retaining Walls in Construction Stage

作　　者：范瑛[1] 何云川[1] 

机构地区：[1]湖北工业大学土木工程与建筑学院,湖北武汉430068

出　　处：《土木工程与管理学报》2013年第2期27-31,共5页Journal of Civil Engineering and Management

基　　金：湖北省交通厅重点项目(20060428)

摘　　要：在对高速公路工程某标段高边坡多级挡土墙的变形位移实测数据统计及分析的基础上,运用有限元分析软件对该挡土墙整个施工阶段的变形位移进行模拟分析。结果表明:在整个施工过程中,除第一级挡土墙外各级挡土墙的DX、DZ方向位移情况基本相似。DX方向位移随填土高度增加而增加,在一定范围呈现线性关系,然后转变为非线性增加,最终超过某个值后位移就不在发生变化;DZ方向位移变化情况同DX方向具有相似的规律,与常规理论表现不一样的规律。最后通过软件提取各个施工阶段中的最大位移点的节点号,绘制得到最大位移点的轨迹线,确定施工阶段最可能形成破坏面的位置,从而指导施工,保证工程的安全。Based on the deformation displacement measured data statistics and analysis of high slope multistage retaining wall for a section of the actual high-speed engineering, simulation analysis is made, by using the finite element analysis software supplying the deformation displacement of the retaining wall for the whole construction stage. The analysis results show that in the whole construction process but the first level retaining wall, the DX and DZ direction displacement situation of all levels is similar. The DX direction displacement of the multistage retaining wall changes with the filling height, increases linearly in a certain range, and then increases non-linearly, eventually more than a certain value, displacement will not change; the DZ direction displacement change is similar to DX direction displacement. In the whole slope construction phase of the simulation analysis process, the node numbers of the maximum displacement points in each construction stage are extracted, then get points line of the maximal displacement locus, determine the construction stage that most likely to form the damage position, so as to guide construction, and guarantee the safety of the project.

关 键 词：多级挡土墙 高边坡 变形情况 数值模拟 

分 类 号：TU476.4[建筑科学—结构工程]