城市交叉口路面结构协调性研究  

Study on the Harmony of Pavement Structures at Urban Intersections

作　　者：王燕芳[1] 叶青[1] 倪富健[2] 山宏宇[1] 

机构地区：[1]贵州省交通规划勘察设计研究院股份有限公司,贵阳550014 [2]东南大学交通学院,南京210096

出　　处：《武汉理工大学学报（交通科学与工程版）》2016年第2期298-302,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

摘　　要：由于车辆制动启动频繁、交通渠化的原因,城市交叉口路面车辙病害严重.文中针对城市交叉口路面,在路面车辙预估有限元分析计算基础上,进行路面结构的协调性研究.研究中通过三轴动态蠕变和三轴动态模量试验获取沥青混合料的属性参数,在温度场分析的基础上,进行有限元分析计算,确定了同种材料位于中上面层时对车辙的贡献比值,推荐了针对城市交叉口路面中面层与上面层材料流变次数指标的关系.Permanent deformation in the form of rutting is the largest and most frequently occurring problems when dealing with hot mix asphalt（HMA）pavements at the urban intersections.The increase of traffic volume and truck percentage at the intersections and parking areas,along with the remarkable increase in the allowable maximum load and tire pressure,have exacerbated the extent and severity of the permanent deformation of HMA pavements at these locations.This paper studies the harmony of pavement structures by using the finite element method（FEM）software ABAQUS to predict the rut values of pavements with different kinds of asphalt mixtures.Both triaxial dynamic creep test and triaxial dynamic modulus test are conducted to obtain the property parameters of the asphalt mixtures.Based on the temperature profile analysis,for the same mixture,the contribution ratios of the rut depth at both the surface and the second layer are determined by the FEM.It recommends in this research that the control of the flow number ratio between the two layers could be an effective method to extend the life of the pavement and reduce the diseases of the pavement.

关 键 词：城市交叉口 车辙预估 有限元 协调性 流变次数 

分 类 号：U416.217[交通运输工程—道路与铁道工程]