基于ABAQUS的水平荷载对路面力学响应影响分析
Analysis of Horizontal Load Influence on Pavement Mechanical Response Based on ABAQUS

国内沥青路面设计方法中，只考虑了轮载的垂直力的作用，对水平荷载作用的考虑较少。而实际情况下，水平荷载作用是路面表面发生病害的重要原因之一。本文基于弹塑性力学基本知识，利用三维有限元方法，分别采用弹性模型和弹塑性模型，计算了垂直荷载作用以及水平荷载作用下的沥青路面结构的力学响应，对比分析了水平荷载对路面力学响应的影响。结果表明，水平荷载对路面沥青层拉应变、剪应力分布有较大影响，采用弹塑性模型比弹性模型计算得到的应变值更大。通过本文研究，我们有效地认识了路面材料弹塑性的性质，为相关深入的研究奠定了理论上的基础，本文的研究成果也对路面结构力学响应分析的相关研究有一定的指导和借鉴意义。
In the domestic asphalt pavement design method, only the effect of the vertical force of wheel load is considered, and less consideration is given to the effect of horizontal load. And in practice, the horizontal load action is one of the important reasons for the occurrence of diseases on the pavement surface. In this paper, based on the basic knowledge of elasto-plastic mechanics, the mechan-ical response of the asphalt pavement structure under the action of vertical load as well as horizontal load is calculated by using the three-dimensional finite element method and the elastic model and the elasto-plastic model respectively, and the effect of horizontal load on the mechanical response of the pavement is compared and analyzed. The results show that the horizontal load has a large effect on the distribution of tensile and shear stresses in the asphalt layer of the pavement, and the strain values obtained by using the elasto-plastic model are larger than those calculated by the elastic model. Through the research of this paper, the elastic-plastic nature of the pavement material is effectively understood, and a theoretical basis is laid for the related in-depth research. The research results of this paper also have certain significance of guidance and reference for the research related to the mechanical response analysis of pavement structures.