基于TransCAD的BPR路阻函数对OD反推影响分析  

Analysis of the Effect of BPR Road Resistance Function on OD Inversing Based on TransCAD

作　　者：程浩 朱从坤[1] 

机构地区：[1]苏州科技大学土木工程学院,苏州215011

出　　处：《价值工程》2018年第1期205-208,共4页Value Engineering

摘　　要：随着交通信息采集技术的发展,路段流量的获取变得越来越容易。因此,通过路段观测流量来反推OD矩阵的方法成为一种经济实用的方法。本文介绍了基于TransCAD软件OD矩阵反推的方法,并结合苏州市部分特定路网建立了路网模型。运用单因素敏感性分析法,结合选定的均方根误差、相对误差以及模态置信准则(MAC)等三个评价指标,分析BPR路阻函数参数α和β对OD矩阵反推结果精度的影响。在反推过程中建议使用随机用户平衡分配法(SUE),并给出α和β的建议取值范围,可为提高利用TransCAD软件进行OD矩阵反推精度提供参考。With the development of traffic information collection technology, the acquisition of road traffic becomes easier. Therefore, it is an economical and practical method to inverse OD matrix by observing the flow of traffic on each link. In this paper, the method of OD matrix inversion based on TransCAD software is introduced, and the road network model is established based on some specific road networks in Suzhou. By using single factor sensitivity analysis and combining with three selected evaluation indexes such as root mean square error, relative error and modal confidence criterion（MAC）, the influence of parameters α and β of the BPR function on the precision of the OD matrix is analyzed. In the process of inversing, it is recommended to use the SUE（Random Balanced User Allocation） method and give the suggested values of α and β, which can provide reference for improving the accuracy of OD matrix using TransCAD software.

关 键 词：TRANSCAD 反推OD矩阵 BPR路阻函数 影响分析 

分 类 号：U491[交通运输工程—交通运输规划与管理]