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基于有限元软件ABAQUS,建立沥青混凝土路面结构三维有限元模型,分析了基层结构参数对沥青混凝土路面力学响应的影响。揭示了基层厚度、基层模量和基层与面层或底基层接触条件变化,对路表弯沉、面层层底拉应力和基层层底拉应力等路面力学响应量的影响规律;结合正交试验,提出了在基层结构参数中,路表弯沉受基层厚度影响显著,面层层底拉应力受基层与面层之间的接触条件影响最为显著,基层层底拉应力受基层模量影响显著。
Based on the finite element software ABAQUS, a three-dimensional finite element model of asphalt concrete pavement structure was established, and the influence of the basic structure parameters on the mechanical response of the asphalt pavement was analyzed. The effects of the thickness of basement, the modulus of base course and the contact conditions between base course and base course or base course on the dynamic response of pavement such as deflection of road surface, tensile stress of base course and base tensile stress were revealed. Combined with orthogonal The results show that the deflection of the road surface is significantly affected by the thickness of the base course. The tensile stress at the bottom layer is most significantly affected by the contact conditions between the base layer and the surface layer. The tensile stress at the base layer is affected by the base modulus Significant.