高速公路路段交通量分析及轴载换算

Analysis of Traffic Volume and Equivalent Axle Load Factors in Freeway Sections

交通荷载数据对沥青路面设计和管理有重要作用。轴载谱方法可以更为全面、准确地描述交通荷载。文中收集了江西省部分高速公路荷载站点的实测轴载数据和交通量数据。通过对每一辆车进出收费站的名称识别,结合公路网分布统计得到各路段的交通荷载数据集合。对各路段实测轴载数据特征、交通增长率和累计标准轴次等进行分析,建立了轴载谱数据和交通量数据之间的关系,并给出了调查地区的当量轴次换算系数参考值。

Traffic loading data is very important for asphalt pavement design and management.Axle load spectrum is more comprehensive and accurate in describing the traffic load.This study collected the measured axle load data and traffic volume data of asphalt pavement freeways from toll gates in Jiangxi Province.Traffic loading data in freeway sections is obtained through the data from the entrance and exit toll gate,combined with the highway network.The data was used to analyze the axle load spectrum factors,the number of accumulated equivalent axle loads,and the growth rate of equivalent axle loads.It has been found that the growth rate of equivalent axle loads in some highway sections is negative.In addition,the relationship between axle load data and traffic volume data was developed through the equivalent axle load factors,the value of which in investigated area was listed at last.