复杂移动轮胎力作用下沥青路面黏弹性力学行为模拟研究  

Simulation on viscoelastic behavior of asphalt pavement under complex moving wheel load

作　　者：王扬[1] 王丽娟 路永婕 司春棣 

机构地区：[1]石家庄铁道大学土木工程学院,石家庄050043 [2]河北省交通安全与控制重点实验室,石家庄050043

出　　处：《振动与冲击》2017年第15期181-186,共6页Journal of Vibration and Shock

基　　金：国家自然科学基金(11302138;11572207;11472180)

摘　　要：对复杂移动轮胎力作用下的沥青路面黏弹性有限元建模进行了分析与探讨,在此基础上对路面的黏弹性力学行为进行了仿真,并分析了轮组形式和轴组形式对路面响应的影响。研究表明,在移动轮胎力作用下的路面有限元模型中,沥青混合料的蠕变法则宜采用应变硬化率关系式;在轮胎力反复作用下,路面内部的应力分布趋于均匀,中面层承受较大的Tresca应力;在轮胎工作状态相同的条件下,单轮组对路面永久变形的贡献与双轮组同等重要,双轴组对路面的破坏效应比单轴组更加显著。A finite element model of pavement under the complex moving wheel load was established.Subsequently,viscoelastic behavior simulation of pavement was conducted,and the influence of wheel set and axle set on pavement response was analyzed. Results indicate that the strain-hardening formulation is suitable for the creep rule of asphalt mixture in the proposed model. Under the repeated impact of moving wheel load,the distribution of stress in the pavement tends to be uniform,and the intermediate pavement layer is subjected to a large Tresca stress. Under the same tire operating condition,the single-wheel set makes the same contribution to the permanent deformation of pavement with the dual-wheel set,and the damage effect of daul-axle set on pavement is more significant than that of single-axle set.

关 键 词：沥青路面 黏弹性力学行为 复杂移动轮胎力 有限元分析 

分 类 号：TH212[机械工程—机械制造及自动化] TH213.3