降雨对高速公路小型车行程时间的影响  

Impact of Rainfall on Freeway Travel Time for Passenger Cars

作　　者：叶佳缘[1] 杨赛霓[1] 刘浩[2] 

机构地区：[1]北京师范大学地表过程与资源生态国家重点实验室,北京100875 [2]交通运输部公路科学研究院,北京100088

出　　处：《公路交通科技》2012年第11期135-139,158,共6页Journal of Highway and Transportation Research and Development

基　　金：国家重点基础研究发展计划(九七三计划)项目(2012CB955402);地表过程与资源生态国家重点实验室开放课题(2009-KF-04);科技部国际合作项目(2012DFG20710)

摘　　要：以高速公路抽样收费数据和小时降雨量为基础数据,对各个时段的小型车行程时间根据降雨类别分类,通过数理统计方法研究不同降雨类别对各个时段的行程时间影响。以均值分析为基础,分析各个时段不同降雨类别的行程时间均值差异性。通过绘制小型车行程时间累计频率分析不同降雨类别下的行程时间累计频率特性差异。利用Kruskal-Wallis非参数检验方法检验不同降雨类别下的各时段行程时间差距的显著性和总体行程时间分布差异性,并对不同类别下的行程时间进行最优分布拟合、正态分布拟合、以及Lognormal拟合。最后依据拟合参数得出行程时间增长系数。Based on freeway toll station sampling data and hourly precipitation data, the travel time of passenger cars by precipitation intensity was categorized, and the impact of rainfall category on travel time in different time periods was analyzed using mathematical statistics method. The discrepancy of average travel time in all precipitation intensities and time periods were analyzed using mean value analysis. The cumulative frequency distributions of travel time for passenger cars in each rainfall category were plotted to analyze the difference of travel time cumulative frequency distributions under different precipitation categories. Non- parametric Kruskal-Wallis test was performed to test the significance of difference of different categories＇ travel time in different time periods and the difference in the distribution of the whole travel time. Fitting of best distribution, fitting of normal distribution and fitting of lognormal distribution were obtained for each category＇ travel time as well. Finally, travel time incremental coefficient in each rainfall category was obtained based on the fitting parameters.

关 键 词：智能运输系统 行程时间 非参数检验 降雨影响 

分 类 号：U491.26[交通运输工程—交通运输规划与管理]