不同因素对填筑路堤边坡稳定性影响分析

Influence Analysis of Different Factors on Embankment Slope Stability

路基边坡稳定对公路路基工程施工至关重要,边坡稳定性分析是研究边坡的核心问题,为了研究边坡稳定性及坡率、坡角、填筑高度、粘聚力和内摩擦角等因素对其的影响,以东莞城市轨道交通1#线松山湖站交通疏解道路基边坡为研究背景,通过FLAC 3D软件建立路基模型并进行数值计算,研究结果表明:该路基边坡安全系数为1.47大于规范标准值,稳定性、安全性较好;安全系数随坡率的增大近似呈线性关系增长;随坡角增大近似呈幂函数关系减小;随填筑高度增加近似呈幂函数关系下降;随粘聚力增大近似呈对数关系增长,增长速率逐渐减小,随内摩擦角增大近似线性关系增长。

Roadbed slope stability is very important for highway engineering construction,slope stability analysis is the core issue of studying slopes,in order to study influence of subgrade slope stability and slope,slope angle,filling height,cohesion and internal friction angle,taking the urban slope of Songshanhu Station of Dongguan urban rail transit line 1 as the research background,establish subgrade model and perform numerical calculation through FLAC 3D software,research results show that safety factor of subgrade slope is 1.47 which is greater than the standard value,the stability and safety are good;safety factor increases approximately linearly as slope rate increases;decreases approximately as a function of power as slope angle increases;decreases approximately as a function of power as filling height increases;as cohesive force increases,it increases approximately in a logarithmic relationship,growth rate decreases gradually,as internal friction angle increases,approximately linear.