倾斜面墙加筋挡墙施工过程仿真与潜在破裂面分析  

Construction process simulation of certain reinforced earth retaining wall with inclined pads and analysis on potential failure surface

作　　者：刘泽[1] 杨果林[1] 黄向京[1,2] 

机构地区：[1]中南大学土木建筑学院,长沙410075 [2]湖南交通规划勘察设计院,长沙410008

出　　处：《工程勘察》2011年第10期1-7,24,共8页Geotechnical Investigation & Surveying

基　　金：湖南省交通科技项目(200612)

摘　　要：在现场监测的基础上,利用FLAC3D对湖南湘潭至衡阳西线高速公路K124+300路段的倾斜面墙加筋土挡墙进行了施工过程仿真,研究了施工过程中墙内竖向土压力、侧向土压力、侧向变形以及筋带应变的发展过程和挡墙潜在破裂面形态。结果表明,对加筋土挡墙进行施工过程仿真分析可以再现施工过程中挡墙内部的应力应变发展过程;加筋土挡墙的变形主要产生于挡墙的施工期;倾斜面墙加筋挡墙的潜在破裂面不宜采用0.3H法;本文提出的双倾角破裂面考虑了面板倾角的影响,是一种简洁又实用的分析方法。Based on field tests,the construction process of the reinforced earth retaining wall with inclined pads at the section of K124＋300 of Xiangtan to Hengyang West Expressway of Hunan was simulated by using FLAC3D,and the developing processes of vertical earth pressure,lateral earth pressure,reinforcement strain and the stability of the retaining wall were studied.The results show that the construction process simulation can reproduce the stress and strain of the wall within the construction process;the deformation of the reinforced earth retaining wall occurs mainly in this process,and the 0.3H law is not fitted to analyze the potential failure surface of the reinforced earth retaining wall with inclined pads;the double dip angle model proposed in this paper is a simple and practical model.

关 键 词：加筋土挡墙 施工过程仿真 现场监测 潜在破裂面 FLAC3D 

分 类 号：TU47[建筑科学—结构工程]