红粘土路堑边坡稳定因素敏感性正交试验分析  

Orthogonal Analysis on the Sensitivity of Stabilizing Factors of Red Clay Cutting Slope

作　　者：方薇[1] 杨果林[2] 刘晓红[2] 

机构地区：[1]长沙理工大学运输工程学院,长沙410076 [2]中南大学土木建筑学院,长沙410075

出　　处：《路基工程》2011年第5期59-61,65,共4页Subgrade Engineering

基　　金：国家自然科学基金项目(50778180);铁道部建设科技项目(2005K002-B-2-1)

摘　　要：通过正交设计,结合内嵌强度折减法的FLAC有限差分程序和数理统计分析方法,对武广客运专线泉口红粘土路堑边坡的稳定影响因素诸如粘聚力、内摩擦角、滑体密度、地下水位、坡比、剪胀角等进行了敏感性分析,然后采用极差分析对其进行了评价。结果表明,对红粘土路堑边坡稳定性影响因素的敏感性大小依次为:粘聚力c>坡比m>内摩擦角φ>滑体密度ρ>地下水位h>剪胀角ψ。Through orthogonal design,combined with strength reduction method FLAC finite difference program and mathematical statistical analysis method,various stabilizing factors of Quankou red clay cutting slope in Wuhan-Guangzhou Passenger Dedicated Line,such as cohesion,inner friction angle,density of sliding mass,ground water level,slope ratio and dilation angle are separately analyzed and then evaluated using extreme difference method.The results show that the sensitivity of these stabilizing factors are cohesion cslope ratio minner friction angle φdensity of sliding mass ρground water level hdilation angle ψ.

关 键 词：正交试验 强度折减法 边坡稳定 敏感性分析 

分 类 号：U416.13[交通运输工程—道路与铁道工程]