抗滑桩支护公路边坡稳定性分析  

Stability Analysis of Anti-slide Pile Support for Highway Slope

作　　者：周晔 ZHOU Ye(Zhongrong Planning&Design Co.,Ltd.,Changsha,Hunan 410200,China)

机构地区：[1]中榕规划设计有限公司,湖南长沙410200

出　　处：《黑龙江交通科技》2025年第4期25-28,34,共5页Communications Science and Technology Heilongjiang

摘　　要：为了提高边坡稳定性,防止边坡在施工和运营期间出现安全事故,分析了抗滑桩在边坡中的应用。提出了抗滑桩设计的基本要求,从平面布置、桩身嵌固深度、截面尺寸等方面分析了抗滑桩的布置方法,并对混凝土等级、纵向受力钢筋及构造钢筋的直径、间距等进行总结。采用极限平衡法、有限元法分析了边坡稳定性。以G109公路K325+600~K325+850段的路堑高边坡为例,设计了抗滑桩方案,计算了边坡在不同工况、不同抗滑桩设计参数下的安全系数。研究成果表明:抗滑桩嵌固深度越大,布置间距越小,边坡安全系数越大,稳定性越好。当嵌固深度>6 m,边坡稳定性提升幅度不明显。当布置间距>6.5 m,边坡稳定性快速下降。In order to improve the stability of slope and prevent safety accidents during construction and operation,the application of anti-slide pile in slope is analyzed.The basic requirements of anti-slide pile design are put forward,and the layout method of anti-slide pile is analyzed from the aspects of plane layout,embedded depth of pile body,section size,etc.,the concrete grade,the longitudinal force of steel bars and the diameter and spacing of structural steel bars are summarized.Taking the limit equilibrium method and the finite element method as examples,the slope stability analysis methods are analyzed.Taking the high cutting slope of K325+600~K325+850 section of G105 highway as an example,the anti-slide pile scheme is designed,and the factor of safety of the slope under different working conditions and different anti-slide pile design parameters are calculated,the results show that the greater the embedded depth and the smaller the spacing of anti-slide piles,the greater the slope factor of safety and the better the stability.When the embedded depth is more than 6 m,the slope stability improvement is not obvious.When the layout spacing exceeds 6.5 m,the slope stability decreases rapidly.

关 键 词：边坡工程 抗滑桩 加固原理 设计计算 布置方案 稳定性 

分 类 号：U416.14[交通运输工程—道路与铁道工程]