动态荷载下刚柔复合路面结构变形和应力分析

Three Dimensional Finite Element Dynamic Analysis of Stiff-flexible Bonding Pavement

采用温克勒地基上跨接缝复合路面结构的三维有限元模型 ,分析了动力荷载下复合路面系统的最大变形和应力特性 ,比较了路表面纵向和横向上路面系统变形盆的差异 .并通过对接缝区不同层位的应力的比较分析 ,认为表面上反复竖向拉应力 (动态剪切 )

A three dimensional finite element model of stiff-flexible bonding pavement with joint lying on wenkel subgrade is used to obtain dynamic properties and behaviour of pavement system.Max deflection and stress state of pavement system subjected to dynamic load is got and difference of deflection basin along transverse direction and longitudinal direction is compared.On the basis of analysis of stress state of different point,the conclusion that repeated dynamic shear is major reason resulted in surface damage of joint zone is drawn.