软基路堤稳定安全系数影响因素敏感性数值分析  

Analyzing the influence factors' sensibility of calculating stability safety coefficient of the slope

作　　者：杨林[1] 王恒星[1] 

机构地区：[1]东北林业大学土木工程学院,黑龙江哈尔滨150040

出　　处：《山西建筑》2017年第23期143-145,共3页Shanxi Architecture

摘　　要：为研究软土地基边坡稳定安全系数的影响因素,选择哈尔滨某高速路段边坡进行实地考察,利用有限元软件及控制变量法,通过改变计算模型的几何尺寸和材料等参数探究影响稳定安全系数的影响因子的敏感性,计算结果表明:土的重度γ对一般边坡稳定安全系数的敏感性较大,内摩擦角φ对软基路堤稳定安全系数的敏感性较大。In order to study the factors affecting the stability and safety of slope in soft soil foundation,we select slope of a high-speed section in Harbin for field trips. The subgrade model is calculated by the finite element method. Using the control variable method,the sensitivity of the influence factor of stable safety factor is explored by changing parameters of geometric size and material of the computer model. The calculating results show that: the sensitivity of soil severe γ to the safety factor of general slope stability is large,and the internal friction angle φ is more sensitive to the safety factor of soft foundation embankment.

关 键 词：软基路堤 稳定安全系数 有限元法 极限平衡法 敏感性分析 

分 类 号：U416.12[交通运输工程—道路与铁道工程]