双层刚性道路结构参数反演分析  

Back-analysis of Double-layer Rigid Pavement Structure Parameters

作　　者：刘锋 李浩 方杨 

机构地区：[1]公路交通安全与应急保障技术及装备交通运输行业研发中心,广州510420 [2]广东华路交通科技有限公司,广州510420

出　　处：《武汉理工大学学报（交通科学与工程版）》2016年第6期994-997,1002,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：广东省交通厅科技项目资助(2012-02-011)

摘　　要：为了反演分析出Winkler地基上的双层刚性道路结构参数——地基反应模量k.建立Winkler地基上的双层刚性道路结构ANSYS有限元模型;运用该模型,求出Winkler地基上的双层道路结构在不同k和不同面层板厚度h下的惰性点参数共216组,并分别得出了惰性点距离和惰性点弯沉与面层板厚度和地基反应模量之间的回归方程;以该方程为基础,运用迭代法反演分析出地基反应模量k,并提出了用于确定该迭代过程初始值的新方法.结果表明,该回归方程能惟一地确定地基反应模量.The aim of this paper is to perform back-analysis of the double-layer rigid pavement structure parameter of Winkler foundation,which is the foundation reaction modulus（k）.The ANSYS finite element model of a double-layer rigid pavement structure on Winkler foundation is firstly built.Secondly,by using the model,216 groups of parameters of the double-layer pavement structure on Winkler foundation under different k and surface layer thicknesses are obtained.In addition,the regression equation is obtained among Rc,Dc,the surface layer thickness and the foundation reaction modulus.Finally,on the basis of the equation,by using iterative method,the back-analysis of k is performed and a new method for determining the initial value of the iterative method is put forward.The results show that the regression equation can uniquely determine the foundation reaction modulus.

关 键 词：道路工程 惰性点 刚性道面 WINKLER地基 地基反应模量 回归分析 

分 类 号：U416.2[交通运输工程—道路与铁道工程]