高架快速路排水沥青铺装车辙变形分析  

Rutting Analysis of Elevated Drainage Asphalt Pavement

作　　者：黄晓清 HUANG Xiaoqing

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,上海200092

出　　处：《上海公路》2025年第1期7-11,50,M0003,共7页Shanghai Highways

摘　　要：高架快速路排水沥青铺装在车辆荷载和高温的耦合作用下,易产生车辙变形。现建立高架快速路排水沥青铺装结构的三维有限元模型,分析不同温度场与荷载作用下的铺装结构车辙变形特征。研究结果表明:随着作用次数的增加,高架排水沥青铺装的车辙呈减速上升,逐渐稳定;温度越高,初始上升速度越快,达到稳定的时间越短;低温、常温条件下,排水沥青铺装车辙可满足15 mm的规范要求,可承受较重的交通荷载;高温条件下,排水沥青铺装的车辙发展迅速,仅可满足部分轻交通的需求,需避免高温重载的耦合作用。Under the action of load and high temperature,the elevated drainage asphalt pavement is prone to rutting.In this paper,a three-dimensional finite element model of drainage asphalt pavement structure of elevated expressway is established.The rutting deformation of pavement under different temperature fields and loads is analyzed.The results show that as the number of loading cycles increases,the rut depth of porous asphalt pavement exhibits a decelerating rising trend and gradually stabilizes.The higher the temperature,the faster the initial rising rate and the shorter the time it takes to reach a stable state.Under ow-temperature and normal-temperature conditions,the rut depth of porous asphalt pavement can meet the specification requirement of 15 mm and can withstand relatively heavy traffic loads.However,under high-temperature conditions,the development of rut depth inporous asphalt pavement is rapid,and it can only meet the requirements of some light traffic.Therefore,it is necessary to avoid the coupling effect of high temperature and heavy loads.

关 键 词：有限元 温度场 排水沥青铺装 车辙变形 

分 类 号：U41[交通运输工程—道路与铁道工程]