摘要
基于强度折减法理论,采用有限差分软件FLAC3D对某高速公路典型高填方路堤进行建模分析,研究了高填方路堤加筋前后路堤边坡滑动面变化规律及其影响因素。结果表明,在高填方路堤中加入土工格栅可以有效提高路堤边坡安全系数,并且边坡安全系数随着土工格栅界面参数、填土黏聚力及内摩擦角的增加而非线性增加,滑动面也随之由边坡浅层逐渐向深层发展。
Based on the strength reduction method, the model of the high fill embankment from an expressway is built through the finite difference software FLAC3D, and variation of the position of sliding surface and the influencing factors are studied pre and post reinforcement. The results show that through the reinforcement with geogrid, the slope safety factor of the high fill embankment is increased, to which are also contributed by the increase of the interracial parameter, the cohesion and the internal friction angle of the fill. Accordingly, the position of sliding surface develops from the superficial layer to the deep layer.
出处
《公路》
北大核心
2014年第6期27-31,共5页
Highway
基金
山西省交通建设科技项目
项目编号11-2-17
关键词
高填方路堤
土工格栅
强度折减法
安全系数
滑动面
high fill embankment
geogrid
strength reduction method
safety factor
sliding surface
