有限元技术的发展使得精细化路面结构仿真计算成为可能,但通过软件建立符合实际的有限元模型尤为重要.基于此,依托交通运输部公路科学研究院正在开展的足尺环道试验,采用大型通用有限元软件ABAQUS建立环道上3种典型沥青路面结构的有限元模型,研究模型尺寸、边界条件、荷载形式、网格划分等参数对路面力学响应结果的影响,通过与BISAR软件得到的解析解进行对比,确定合理的有限元建模方法和参数,为后续的沥青路面结构有限元分析提供建模依据.
The development of finite element technology makes it possible to elaborate the simulation calculation of pavement structure, but there is no unified conclusion on how to establish the finite element model in accordance with the reality by software. Based on this, the finite element models of three typical asphalt pavement structures on full-scale test track were established by using the large general finite element software ABAQUS, and the influences of model size, boundary conditions, load forms, mesh division and other parameters on the mechanical response results of pavement were studied. The theoretical values obtained by BISAR software were compared with the results by ABAQUS. The reasonable finite element modeling method and parameters are determined to provide modeling basis for the subsequent in-depth finite element analysis of asphalt pavement structure.
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