基于路面材料动态模量的沥青路面响应仿真分析  

Asphalt Pavement Dynamic Response Simulation Based on Dynamic Modulus of Pavement Materials

作　　者：李岩涛 胡朋[2] 王亚平 张波 王静静 

机构地区：[1]烟台市莱州公路管理局,山东烟台261400 [2]山东交通学院交通土建工程学院,山东济南250357 [3]潍坊市公路管理局,山东维坊261000

出　　处：《山东交通学院学报》2017年第2期54-60,共7页Journal of Shandong Jiaotong University

基　　金：交通部应用基础项目(2014319817250)

摘　　要：为研究动荷载作用下沥青路面的动态响应,确定沥青路面各层的动态模量参数,建立路面有限元模型,利用荷载步实现动荷载的加载。测试试验模型沥青面层层底的动态响应,将仿真分析结果和试验数据进行对比,验证仿真结果的正确性。研究结果表明:在动荷载作用下基层和底基层的拉应变和弯沉小于静荷载作用;荷载频率超过5 Hz后,频率对弯沉和层底拉应变的影响不大,温度和动荷载对面层层底拉应变的影响较大。In order to study the asphalt pavement response under the act of dynamic load, the dynamic model of pavement materials is determined, the finite element model is established and the dynamic load is applied to test the experimental model for the dynamic response of the bottom layer. The simulation results are compared with testing results, which verifies the accuracy of the model. The research results show that the tensile strain at the bottom of surface and base under the action of dynamic load is obviously less than the strain under the action of static load; when the frequency of dynamic load is more than 5 Hz, frequency has small effect on deflection and tensile strain, but the temperature and dynamic load have great effect on the tensile strain of the bottom layer.

关 键 词：路面材料 动荷载 有限元 动态模量 动态响应 

分 类 号：U416.217[交通运输工程—道路与铁道工程]