基于差异出行比较的城轨方案道路总出行时间评价

Analysis of Total Road Travel Time for Urban Rail Transit Schemes Based on Differential OD Pairs Comparison

摘要:

针对当前轨道交通规划方案评价中综合交通出行时间的道路交通部分不易准确比较的问题，提出利用比选方案道路交通出行的差异部分对全道路网总出行时间进行比较的方法。聚焦轨道交通比选方案下道路交通出行的差异OD，修正差异OD的预测出行路段参数并预测车流量，估算差异OD本体的出行时间。同时基于Wardrop第一平衡准则构建了利用差异OD及其出行路段参数直接估算差异OD的影响时间的计算模型。通过比较差异OD本体出行时间与差异OD影响时间之和，实现比选方案道路网总出行时间的分析。以某城市轨道交通线网规划方案比选为例设计了实验案例，验证结果显示该方法的分析结果可靠，在规划工作中容易实现。

Abstract:

This study aims at the difficult problem of calculating and comparing the total road travel time costs of rail transit network planning schemes. Focusing on the differential road OD pairs of the comparison schemes， we conduct traffic surveys on the predicted urban road section through which the differential OD pairs pass， and revise the travel time functions of the road sections so that the travel time of the differential OD pairs is accurately calculated. Given the interactive nature of vehicle travel， a computational model based on Wardrop First Principle was constructed using the surveyed road sections to directly estimate the impact times of differential OD pairs on the road network. By calculating and comparing the sum of differential OD pair travel time and impact time between the comparison schemes， an accurate comparison of total road network travel time was completed.We selected two rail transit schemes for a particular city to verify this method， the results showed that the comparative analysis of this method is reliable and easy to implement in practical work.