轮载作用下沥青路面三维非线性有限元分析

ANALYSIS ON ASPHALT PAVEMENT UNDER TYRE LOAD BY THREE-DIMENSIONAL FINITE ELEMENT METHOD

在解析法基础上的多层弹性体系理论 ,是当前国内外广泛使用的描述沥青路面结构的力学模型 ,它有一些局限性 ,而用解析的方法难以建立起更一般的沥青路面结构的力学模型。以三维非线性有限元模型NAAPS为工具 ,对轮载作用下沥青路面的非线性响应进行了初步分析 ,得到了一些有意义的结论 。

Theory of multi layer elastic system based on analytical method is the mechanical model widely used around the world to describe structures of asphalt pavement. It has some limitations whereas the establishment of mechanics model would be exceedingly difficult if the limitations were overcome. A special purpose three dimensional non linear finite element computer program NAAPS (Non linear Analysis for Asphalt pavement Structure) is developed to assess the mechanical responses of asphalt pavement structures under tyre loads. Preliminary non linear analysis of asphalt pavement using NAAPS is carried on, leading to some valuable conclusions.