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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,分析了不同层间摩阻力对路面结构车辙变形、剪应力大小的影响,对半刚性、柔性两种路面结构进行了对比分析。研究结果表明:随着层间摩阻力的逐步增大,荷载下路面车辙变形及剪应力逐渐减小并趋向于恒定值;在相同层间摩阻力下,柔性路面剪应力变化要大于半刚性路面,从而导致车辙变形较大;良好的层间接触能降低车辙的变形。
The numerical model of asphalt pavement structure considering the inter-layer frictional resistance of pavement structure was established. The influence of frictional resistance between pavement layers on rutting deformation and shear stress was analyzed. The semi-rigid and flexible pavement structures were compared and analyzed . The results show that the rutting deformation and shear stress of the pavement gradually decrease and tend to be constant with the increase of the frictional resistance between layers. Under the same frictional resistance, the change of the shear stress of the flexible pavement is greater than that of the semi-rigid pavement , Resulting in larger rut deformation; good interlayer contact can reduce the deformation of rutting.