路堤边坡抗滑桩超前支护研究

Study on Pre-reinforced Road Filling Slope Anti-sliding Piles

在铺设轨道、公路等工程建设过程中,常有需要填筑以保证路基宽度或高度的情况。当填筑边坡设计坡度不能满足工程需要,且由于地形条件限制不能采用放缓设计边坡的方法时,提出了路堤边坡抗滑桩超前支护的思想。采用数值方法分别模拟了按原设计坡度填筑和采用4种不同截面尺寸超前支护桩结构加固后填筑的情况。根据计算得出的路堤边坡塑性区开展结果,分析了边坡的稳定性,通过比较得出最优的路堤边坡抗滑桩超前支护方案。采用有限元方法分析了优选超前支护桩方案,超前支护桩与填筑土体相互作用中超前支护桩上土压力和位移的大小及分布特点。

Road filling is often used to increase the width or height of road.In order to solve the problem that the designed grade of road filling slope is unstability and the method of decrease the grade of slope filling can't be used to enhance the filling slope stability,because of the orographic condition limit,the concept of pre-reinforced by anti-sliding piles in road filling slope was proposed.The method of numerical simulation used to simulate designed slopes and four different pile sizes used in pre-reinforc...