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针对沥青路面车辙的影响因素,建立了沥青路面车辙分析的有限元模型,采用黏弹塑性理论,利用有限元软件ABAQUS分析了层间接触对沥青路面车辙的影响。对不同荷载、不同层间接触和不同路面结构的沥青路面的剪应力和车辙深度进行了计算。结果表明:对半刚性基层路面和柔性基层路面,良好的层间接触均能提高沥青路面的抗车辙能力;在相同荷载和层间摩阻力下,柔性基层沥青路面的车辙变形要大于半刚性基层沥青路面;对于半刚性基层路面,基面层的接触状态对沥青路面车辙的影响要比中下面层的接触状态大;在不同的层间接触和不同的沥青路面结构下,随着荷载的增大,层间接触较差的路面车辙变形大,超载对柔性基层路面车辙变形的影响要大于半刚性基层路面。
According to the influencing factors of rutting of asphalt pavement, a finite element model of rutting analysis for asphalt pavement was established. The viscoelasto-plastic theory was used to analyze the influence of interlayer contact on rutting of asphalt pavement by using finite element software ABAQUS. The shear stress and rutting depth of asphalt pavement with different loads, different levels of contact and different pavement structures were calculated. The results show that both of the semi-rigid base pavement and the flexible base pavement can improve the anti-rutting ability of the asphalt pavement with good inter-layer contact. Under the same load and interlaminar friction, the rut deformation of the flexible base pavement is greater than that of the semi-rigid base pavement Asphalt pavement. For the semi-rigid base pavement, the contact state of the base pavement affects the rutting of the asphalt pavement more than the contact condition of the middle and lower pavement. With different interlayer contact and different asphalt pavement structure, Large, poor contact between the layers of the road surface rut deformation, overloading on the rudder deformation of the soft grassroots pavement impact is greater than the semi-rigid base pavement.