平交路口荷载作用下沥青路面粘弹性力学响应研究  

Viscoelastic Response of Asphalt Pavement Under Loads at Grade Crossing

作　　者：张倩[1] 范哲哲 李泽[1] 石鑫 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]石家庄交通运输局,河北石家庄050001

出　　处：《筑路机械与施工机械化》2015年第10期47-51,共5页Road Machinery & Construction Mechanization

基　　金：陕西省自然科学基础研究计划项目(SJ08E208);河北省交通科技项目(Y-2010090);陕西省教育厅专项科研计划项目(12JK0795)

摘　　要：为探求平交路口处水平力对沥青路面面层材料力学响应的影响,根据粘弹性层状体系理论,采用ABAQUS软件建立半刚性基层沥青路面有限元模型,分析启动时水平荷载作用下平交路口沥青路面面层材料的粘弹性力学响应。结果表明,水平力的作用增加了沥青面层间的正应力、剪应力及应变,使得面层材料推移变形的可能性大大增加,加速了沥青路面波浪、拥包等病害的产生。In order to explore the impact of horizontal force on asphalt pavement materials at the grade crossing, a 3D finite element model based on the theory of viscoelastic layered system was presented. A model of semi-rigid base asphalt pavement was established using ABAQUS. The simulation shows that horizontal load can increase normal stress, shear stress and strain between the asphalt surface layers. The possibility of slippage, wave and packet of asphalt surface layers is increased dramatically, and the deterioration at the crossings is aggravated.

关 键 词：平交路口 水平力 有限元分析 粘弹性 

分 类 号：U416.217[交通运输工程—道路与铁道工程]