某边坡预应力锚索抗滑桩设计参数优化  

Optimization on design parameter of a pre-stressed anchor cable anti slip pile in a slope

作　　者：张生才 ZHANG Shengcai(Fenshi Expressway Co.,Ltd.of Transportation Holdings Group Co.,Ltd.,Xiaoyi 032399,Shanxi,China)

机构地区：[1]山西交控汾石高速公路有限公司,山西孝义032399

出　　处：《工程建设》2025年第2期21-24,共4页Engineering Construction

摘　　要：为探明预应力锚索抗滑桩在不同参数下边坡的稳定性情况,以某边坡工程为依托,采用有限元软件Midas GTS NX对抗滑桩设计参数进行模拟,分析预应力锚索抗滑桩的截面尺寸、桩间距、锚索预应力变化对边坡稳定性的影响规律。结果表明:预应力锚索抗滑桩可以提高边坡稳定性,采用支护方案的边坡稳定性从1.02提高到1.30以上。通过对抗滑桩不同参数工况的模拟,得出边坡的稳定性随抗滑桩截面尺寸的增大、桩间距的减小、锚索预应力的增大而增大,反之减小;锚索预应力的增大会在一定程度上提升边坡的稳定性,但边坡稳定性的增长幅度值在逐渐减小,当锚索预应力持续增大后,对边坡稳定性的贡献作用将逐渐降低。本文成果可为预应力抗滑桩边坡的设计参数选定提供一定的借鉴与参考。To investigate the stability of slopes with prestressed anchor anti slip piles under different parameters,based on a certain slope project,finite element software Midas GTS NX is used to simulate the design parameters of anti slip piles.The influence of the cross-sectional size,pile spacing,and pre stress changes of prestressed anchor anti slip piles on slope stability is analyzed.The results indicate that prestressed anchor anti slip piles can improve slope stability,and the slope stability using the support scheme increased from 1.02 to over 1.30.By simulating the working conditions of different parameters of anti slip piles,it is found that the stability of slopes increases with the increase of the cross-sectional size of anti slip piles,the decrease of pile spacing,and the increase of anchor cable prestress,and vice versa;The increase of anchor cable prestress will improve the stability of the slope to a certain extent,but the growth amplitude of slope stability is gradually decreasing.When the anchor cable prestress continues to increase,its contribution to slope stability will gradually decrease.The results of this article can provide some reference and guidance for the selection of design parameters for prestressed anti slip pile slopes.

关 键 词：边坡稳定性 抗滑桩 锚索 数值模拟 

分 类 号：U416.14[交通运输工程—道路与铁道工程]