基于有限元分析的弯沉盆惰性点理论研究  

Research on Inertial Point Method by Using FEM

作　　者：阳恩慧[1] 邱延峻[1] 蒋鑫[2] 

机构地区：[1]西南交通大学,四川成都610031 [2]同济大学,上海200433

出　　处：《重庆交通大学学报（自然科学版）》2008年第2期232-235,267,共5页Journal of Chongqing Jiaotong University(Natural Science)

摘　　要：采用有限元程序ABAQUS分别计算静载和动载作用下沥青路面的FWD理论弯沉盆,寻找理论弯沉盆中的惰性点,并与基于弹性层状体系理论计算回归公式得到的惰性点进行比较。结果表明路面结构的动、静荷载反应有明显的差别.如忽略动荷载和底基层的影响,则反算结果误差很大,不能满足工程要求。The responses of asphalt pavement to static and dynamic FWD load are analyzed by using the finite element program ABAQUS, to try to find the inertial point in the surface deflection basin. The results illustrate that there are significant differences between the dynamic response and the static response, comparing with the result of static linear elastic theory. There may be obvious errors at the result of backcalculation if the dynamic effects and the sub-base are not considered in backcalculation. The precision of backcalculation can＇t satisfy the engineering requirement.

关 键 词：有限元 沥青路面 落锤式弯沉仪 惰性点 

分 类 号：U416.217[交通运输工程—道路与铁道工程]