沥青混凝土路面结构层有限元计算方法和分析

Analysis of Layered Asphalt Concrete Pavement Structure Under Heavy-loads

应用三维有限元动力学的基本方法和正交试验设计,结合有限元分析软件AN SYS对重载作用下多层弹性体系的动力响应进行分析.结果表明,路面结构层的厚度是影响竖向应力分布的主要因素.路面材料的弹性模量对路面的整体刚度和面层的剪切应力影响最大,而且材料的弹性模量、泊松比和结构层厚度存在一定的交叉影响.

The dynamic response of layered pavement structure under heavy-loads is analyzed by using the three-dimensional （3D） finite-element method and the orthogonal test in conjunction with ANSYS software. The results show that the thickness of pavement layers is a major factor in affecting vertical dynamic stress distribution. The elastic modules of asphalt concrete have a great influence on the integral stiffness and maximum shear stress in asphalt concrete pavement, and there is a cross impact between the elastic modulus, the Poisson ratio and the thickness of pavement layers. The results can be used for references in asphalt pavement design and the uses of pavement materials.