基于FLAC 3D对抗滑桩在高速公路路堑高边坡加固中的应用

Application of Anti-slide Piles in High Slope of Expressway Based on FLAC 3D

本文依据我国西南某高速公路路堑高边坡防护工程,基于有限元软件FLAC 3D对抗滑桩的桩径、桩间距和锚固深度等参数进行了研究,研究结果表明:本工程最合理的抗滑桩设计参数为:桩径为2.0m,桩间距为6.0m,锚固深度为10m。基于有限元计算结果,分别对正常工况和暴雨工况下边坡的位移场及塑性区分布规律及特征进行了研究,证明了本文设计的抗滑桩的有效性和可靠性。

Based on the high slope protection project of a highway in southwest China,this paper studies the parameters such as pile diameter,pile spacing and anchoring depth of anti-slide pile were studied based on the finite element software FLAC 3D.The research results show that the most reasonable design parameters of anti-slide pile in this project are:the pile diameter is 2.0 m,the pile spacing is 6.0 m,and the anchoring depth is 10m.Based on the results of finite element calculation the displacement field and plastic zone distribution law and characteristics of the slope under normal working conditions and heavy rain conditions are studied respectively,which proves the effectiveness and reliability of the anti-slide pile designed in this paper.