衡重式桩板挡墙整体滑移稳定安全系数计算方法  

Calculation Method for Overall Sliding Stability Coefficient of Sheet Pile Wall with Relieving Platform

作　　者：胡荣华[1] 刘国楠[2] 黄孝刚[3] 潘效鸿[3] 

机构地区：[1]深圳市房地产评估发展中心地质环境部,广东深圳518034 [2]中国铁道科学研究院深圳研究设计院,广东深圳518034 [3]深圳市国土资源和房产管理局直属分局,广东深圳518034

出　　处：《中国铁道科学》2013年第2期52-57,共6页China Railway Science

基　　金：深圳市国土资源与房产管理局资助项目(20080130002A)

摘　　要：采用基于简化Bishop条分法原理的土坡稳定性分析法,假定衡重式桩板挡墙的滑移模式为整体滑移,且整体滑移面为通过桩基底部的圆弧面,推导衡重式桩板挡墙整体滑移稳定安全系数的数值积分公式。使用Matlab软件编制程序,并采用高精度的Quadl积分函数进行积分,求解衡重式桩板挡墙整体滑移稳定安全系数,并以高达14.0m的边坡为例,对为其所做的支护结构-衡重式桩板挡墙进行整体滑移稳定系数计算。计算和监测结果均表明,在不考虑倾覆稳定性的情况下,衡重式桩板挡墙的稳定性非常好。该方法可用于衡重式桩板挡墙的整体稳定性验算。According to the soil slope stability analysis based on simplified Bishop slice method,with the assumption that the sliding mode of the sheet pile wall with relieving platform was overall sliding and the overall sliding surface was the circular arc surface through the bottom of the pile foundation,the numerical integral formula of the overall sliding stability coefficient of the sheet pile wall with relieving platform was deduced.The program was compiled by Matlab in order to calculate the overall sliding stability coefficient of the sheet pile wall with relieving platform with high precision Quadl integral function.Taking a 14.0 m height slope for example,the sheet pile wall with relieving platform was used as its supporting structure,and the overall sliding stability coefficient was calculated.Both the calculation and monitoring results show that the stability of the sheet pile wall with relieving platform is very good without considering its overturning stability.This method can be used for the checking calculation of the overall stability of the sheet pile wall with relieving platform.

关 键 词：边坡支护 整体滑移 衡重式桩板挡墙 稳定安全系数 简化BISHOP法 

分 类 号：TU472[建筑科学—结构工程]