论文部分内容阅读
现役沥青路面的车辙问题严重,本文以济南城市快速路为例,对沥青路面车辙问题进行研究。本文利用ANSYS有限元软件对济南典型路面结构建立三维有限元模型,并施加双矩形荷载,研究在不同轴载以及不同结构参数下沥青层剪应力的变化规律,以期为济南市沥青路面结构设计提供一些建议。研究表明:当车辆轴载每超载20%时,沥青层最大剪应力值增加12.94%;当模量比在0.75~2之间变化时,模量比每增加0.5,沥青层剪应力增加9.02%。因此建议将基层与沥青层模量比控制在1.5~2.5之间。
The rutting problem of active asphalt pavement is serious. In this paper, taking Jinan City Expressway as an example, the rutting problem of asphalt pavement is studied. In this paper, ANSYS finite element software to build a typical three-dimensional finite element model of Jinan Road, and the application of double rectangular loads, under different loading and different structural parameters of asphalt layer shear stress changes, with a view to Ji’nan asphalt pavement structure design Provide some advice The results show that the maximum shear stress of asphalt layer increases by 12.94% when the vehicle axle load exceeds 20% and the shear stress of asphalt layer increases 9.02% when the modulus ratio changes from 0.75 to 2, . Therefore, it is recommended that the grassroots and asphalt layer modulus ratio control between 1.5 ~ 2.5.