沥青路面倒装结构在动载作用下的力学响应  

Mechanic Response of Inverted Asphalt Pavement Structure Subjected to Dynamic Load

作　　者：刘继忠[1] 张维全[1] 王卫花[1] 

机构地区：[1]重庆交通大学土木学院,重庆400074

出　　处：《交通标准化》2008年第9期100-104,共5页Communications Standardization

摘　　要：基于沥青路面倒装结构动力方程及NEWMARK逐步积分法的基本原理,运用动力有限元专用程序对沥青路面倒装结构和典型结构在动载作用下力学响应的计算结果表明,倒装结构较典型结构力学响应大,但两者的变化趋势相似,另外动载作用下的力学响应比静载小,且倒装结构的应力小于路面结构层材料的容许值。The dynamic equation of asphalt pavement and the basis theory of NEWMARK integration method are introduced. The dynamic infinite element procedure to calculate the mechanic response of both inverted structure and typical structure under dynamic load is applied. The results show that mechanic response of inverted structure is bigger than that of typical structure, and the change tendency is similar. What＇s more, mechanic response of dynamic load is smaller than that of static load and the design point stresses of inverted structure are smaller than tolerances of pavement structure material.

关 键 词：倒装结构 典型结构 三维动力有限元 NEWMARK逐步积分法 

分 类 号：U416.217[交通运输工程—道路与铁道工程]