沥青层厚度对沥青路面车辙的影响研究

基于弹性层状体系理论，利用ABAQUS有限元软件对沥青路面结构进行数值模拟，分析沥青层厚度对沥青路面永久变形的影响。分析表明：沥青层厚度对压密型车辙的影响非常显著，车辙深度随着沥青层厚度的增加而增大，但是随着沥青层厚度的增加，增长趋势逐渐减少，由最初的10%的增长量减少到4%；沥青层内最大剪应力出现的深度不随沥青层厚度的变化而变化，均出现在路表下4-6cm处，因此沥青层厚度对剪切流动变形的影响不是很大。

Research on Influences of Asphalt Layer Thickness on Asphalt Pavement Ruts

Based on the elastic layer system theory and by means of ABAQUS finite element software, this paper performs numerical simulation for asphalt pavement structures, and analyzes the influences of asphalt pavement thickness on permanent deformation of asphalt pavement. The analysis shows very remarkable influences of asphalt layer thickness on compaction type ruts, and the depth of ruts increases with asphalt layer thickness, but the tendency of increase gradually reduces from original 10% to 4%;the depth of the maximum shear stress in asphalt layer does not change with asphalt layer thickness and appears at 4 -6 mm under road surface, therefore, the influence of asphalt layer thickness on shear flow deformation is not significant.