基于轴载谱的沥青路面累计当量轴次换算  

Conversion method of accumulated equivalent axle load of asphalt pavement based on measured axle load spectrum

作　　者：周兴业[1] 刘小滔[1,2] 王旭东[1] 沈国辉[1] 

机构地区：[1]交通运输部公路科学研究院道路结构与材料交通行业重点实验室,北京100088 [2]重庆交通大学土木建筑学院,重庆400074

出　　处：《长安大学学报（自然科学版）》2012年第1期16-19,共4页Journal of Chang’an University(Natural Science Edition)

基　　金：国家自然科学基金项目(50878100)

摘　　要：按照轴数和轮组数对公路上常见车辆进行详细分类,根据交通组成的权重确定实测轴载样本量,并采用静态称重系统对其进行了随机抽测,绘制了各主要车型的轴载谱,据此计算了轴载换算系数和等效轴载。结合某高速公路沥青路面改扩建工程,计算了基于实测轴载数据和理论轴载数据的累计当量轴次换算结果。研究结果表明:与采用理论轴载计算相比,基于实测轴载谱计算得到的累计当量轴次数值较大;为了满足结构验算的需要,沥青路面的厚度应加厚。This paper classifies the common vehicles on the road according to the number of axles and number of wheel groups,it determines the sample size of measured axle load according to the weight of traffic data,and adopts static weighing system to random sampling inspection,and plots the axle load spectrum of main vehicle type,finally calculates the conversion coefficient of axle load and equivalent axle load.According to a reconstructing project with bitumen pavement,the conversion results of accumulative equivalent axle load action time based on measured axle load data and theoretical axle load data are calculated.The result shows that the accumulative equivalent axle load action time based on the calculation of measured axle is bigger than the data based on theoretical axle load data.In order to meet the needs of checking computations on structure,the thickness of asphalt pavement should be increased.

关 键 词：道路工程 轴载谱 等效轴载 累计当量轴次 轴载换算系数 静态称重 

分 类 号：U416.02[交通运输工程—道路与铁道工程]