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为了解决陕西省高速公路沥青路面早期病害严重问题,选取陕西省典型的半刚性基层沥青路面结构,研究在动载作用下不同结构组合的沥青路面的力学响应。利用Ansys有限元分析软件对动荷载作用下的沥青路面进行仿真模拟,并提取数据进行分析,得到以下结论:随着沥青路面厚度的增加,沥青层拉应力、沥青层剪应力和半刚性基层拉应力均逐渐减小;随着沥青面层模量的增加,沥青层拉应力逐渐增加,而半刚性基层拉应力逐渐减小;该文建议沥青面层在18~20cm之间取值,半刚性基层厚度取值40cm以上。
In order to solve the serious problems of early disease of asphalt pavement in Shaanxi Province, the typical semi-rigid base asphalt pavement structure in Shaanxi Province was selected to study the mechanical response of asphalt pavement with different structures combined under dynamic load. Ansys finite element analysis software is used to simulate the asphalt pavement under dynamic load and the data are extracted for analysis. The conclusions are as follows: With the increase of asphalt pavement thickness, the tensile stress of asphalt layer, the shear stress of asphalt layer and the tensile stress of semi- With the increase of bitumen modulus, the tensile stress of asphalt layer gradually increases, while the tensile stress of semi-rigid base decreases gradually. This paper suggests that bitumen surface layer should be between 18 and 20 cm, semi-rigid Grass-roots thickness of more than 40cm.