FLAC3D在高速铁路路堤边坡稳定性分析中的应用  

Application of FLAC3D in Stability Analysis of Embankment Slope along High-speed Railway

作　　者：佟海宁[1] 隋孝民[1] 

机构地区：[1]铁道第三勘察设计院,天津300142

出　　处：《路基工程》2014年第6期153-156,161,共5页Subgrade Engineering

摘　　要：高速铁路在山区修建,高填陡坡路堤不可避免,其边坡的稳定性分析、破坏模式及支挡防护措施的研究尤为重要。运用有限差分软件FLAC3D,对某客运专线典型高填陡坡路堤工点进行了采用设置路堤边坡方案的稳定性及破坏模式分析,根据分析结果确定了锚固桩支挡防护方案。FLAC3D在锚固桩受力分析中,考虑了路堤边坡体与锚固桩之间整体力学效应,可通过数值模拟直接得到锚固桩的内力分布,比基于刚体极限平衡方法的计算结果更接近真实情况。When high-speed railway is constructed in mountainous area, high-filled steep slope of embankment is inevitable, thus the studies on the slope stability, failure mode and retaining protection measures are very important. This paper, with FLAC3D finite difference software, made stability and failure mode analysis on the embankment slope scheme for a construction site with typical high-filled steep embankment along a passenger dedicated line, and then determined anchor pile retaining protection plan according to the analysis results. Under FLAC3D, the overall mechanical effect between the slope and the anchor pile was considered, and then the internal force distribution in the pile was obtained directly by numerical simulation, which was closer to the truth than the results from rigid limit equilibrium method.

关 键 词：FLAC3D 陡坡路堤 稳定性分析 锚固桩 剪应变 

分 类 号：U213.12[交通运输工程—道路与铁道工程]