摘要
根据典型测点的各型车辆轴载谱数据,研究了高速公路轴载特性。分析了车辆类型分布系数、月调节系数及轴载分布系数的变化规律,采用多个独立样本的非参数假设检验研究了上述轴载谱参数随时间变化趋势的抽样数据是否来自同一总体,根据轴载谱数据采用假设检验的方法,分析了轴载超载现象。研究结果表明可将不同测点的车辆类型分布系数按B1.2、U1.2及S1.2.3三种车型比例进行分类;三年的车辆类型分布系数、月调节系数及轴载分布系数数据较为稳定,在统计学上不存在明显差异;各轴型均存在一定程度的超载现象,其中以双联轴双轮组尤为突出。
The properties of axle loads on an expressway were studied according to the axle load spectrum data of vehicles of different types on the typical testing sites.The variation laws of the vehicle type distribution coefficient,adjustment coefficient of transportation volume per month and the axle load distribution coefficient on the survey sites were analyzed.The change law of the sample data of these axle load spectrum parameters over time was studied to verify whether the data came from the same population according to a non-parametric hypothesis testing method with many independent samples.The phenomenon of over-loading was analyzed based on the axle load spectrum with non-parametric hypothesis testing method.The results indicated that the vehicle type distribution coefficient could be classified into three categories by using the percent of the total vehicle amounts of B1.2、U1.2 and S1.2.3.The data of the adjustment coefficient of transportation volume per month,the vehicle type distribution coefficient and the axle load distribution coefficient in three years were close to unanimous by statistical analysis.Over-loading phenomena existed in various axle types,the phenomena was most obvious in the double axes with two tires.
出处
《交通运输工程与信息学报》
2010年第4期35-42,共8页
Journal of Transportation Engineering and Information
