货运OD矩阵反推中改进的BPR道路阻抗函数研究  

Study on Improved BPR Road Impedance Function in inversing OD Matrix of Freight Transport

作　　者：张玲瑞[1] 杨扬[1] 

机构地区：[1]昆明理工大学交通工程学院,云南昆明650500

出　　处：《公路交通科技》2016年第7期125-129,144,共6页Journal of Highway and Transportation Research and Development

基　　金：国家自然科学基金项目(71463035)

摘　　要：在针对货运OD的反推过程中,如何准确得到路段上客车对货车的交通影响是进行货运OD矩阵反推亟须解决的问题。在分析将BPR函数直接作为货运OD矩阵反推阻抗函数的不足之后,对路段初始阻抗进行了修正。将客车流量视为路段的背景交通量,提出了针对货车的路段阻抗模型。通过算例分析,采用不同的阻抗模型对不同类型的道路进行了模型参数标定,并对比分析了改进BPR函数与传统BPR函数对不同类型道路的标定结果。结果表明:改进的BPR函数在一定的条件下能更好地反映货运OD矩阵反推中的路段阻抗。In the process of inversing the OD matrix of freight transport,how to accurately obtain the traffic impact of buses on freight vehicles on road is one of the urgent problems in inversing the OD matrix of freight transport. After analyzing the flaws that taken the Bureau of Public Roads（ BPR） function directly as the impedance function for inversing OD matrix of freight transport,we modified the initial impedance of road.Taking the passenger traffic volume being required as the background traffic volume,the impedance model for freight vehicles is proposed. By calculation example analysis,we calibrated the model parameters of different road types using different impedance models,and comparatively analyzed the calibration results of the improved BPR function and traditional BPR function for different road types. The result shows that the improved BPR function can better reflect the road impedance in inversing the OD matrix of freight transport under certain conditions.

关 键 词：交通工程 阻抗模型 最小二乘法 改进BPR函数 货运OD矩阵 初始阻抗 

分 类 号：F57[经济管理—产业经济]