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利用Abaqus有限元分析软件,采用线性Drucker-Prager理想弹塑性本构模型描述沥青材料,结合实际道路交通量统计结果,分析了连续性周期荷载作用下沥青路面结构的车辙行为,对比了重载车辆限行前后新铺沥青路面的车辙。结果表明:车辙受到中面层性能的影响最大,沥青面层变形占路面结构总变形比例最大;新铺道路开放交通初期,非弹性变形发展较快;限制重载车辆可以有效减小车辙,开放交通较早的道路,限行对减小车辙的作用越明显。
Using Abaqus finite element analysis software, the linear Drucker-Prager ideal elastic-plastic constitutive model is used to describe the asphalt material. Based on the statistical results of actual road traffic volume, the rutting behavior of asphalt pavement structure under continuous cyclic loading is analyzed. Rutting new asphalt pavement before and after the limit line. The results show that the rutting is affected most by the mid-plane performance, and the asphalt pavement deformation accounts for the largest proportion of the total deformation of the pavement structure. In the early stage of open traffic, the inelastic deformation develops rapidly. Restricting the heavy-duty vehicles can effectively reduce the rutting and opening Traffic earlier roads, limit line to reduce the rut more obvious.