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建立了考虑路面结构层层间摩阻力的沥青路面结构数值计算模型,分析了层间摩阻力下中面层厚度、中面层温度和动荷载对路面结构车辙变形和剪应力大小的影响,并对半刚性和柔性两种路面结构进行了对比分析。结果表明:随着中面层厚度的逐渐增加,车辙变形逐渐增大;半刚性路面车辙随下面层和基层间的层间摩阻力的增大而减小,说明下面层和基层之间的摩阻力对半刚性沥青路面的车辙变形有较大的影响;半刚性路面的车辙随着中面层温度的升高有较大的车辙变形;在动荷载作用下,两种路面结构下车辙比静荷载下均有较大的变形,且柔性路面的车辙变形大于半刚性路面。
The numerical model of asphalt pavement structure considering the inter-layer frictional resistance of pavement structure layer was established. The influence of middle layer thickness, middle layer temperature and dynamic load on rutting deformation and shear stress of pavement structure was analyzed. The semi-rigid and flexible two pavement structures were compared and analyzed. The results show that the rutting deformation gradually increases with the increase of the thickness of the middle layer, and the rutting of the semi-rigid pavement decreases with the increase of the friction between the lower layer and the base layer. This shows that the friction between the lower layer and the base layer The resistance has a great influence on the rutting deformation of the semi-rigid asphalt pavement. The rut of the semi-rigid pavement has larger rut deformation with the increase of the middle layer temperature. Under the dynamic load, The deformation of the flexible pavement is greater than that of the semi-rigid pavement.