考虑换乘意愿的城市轨道交通跨线运营客流分配方法

Passenger Flow Assignment Method for Cross-line Operation of Urban Rail Transit Considering Transfer Willingness

本文以城市轨道交通常见的“Y/T型”跨线运营模式为例,针对城市轨道交通跨线运营背景下,乘客出行方式多样、出行决策复杂这一问题,综合考虑乘客在各个车站的换乘决策,将同站台换乘跨线直达列车作为乘客出行策略之一,研究跨线运营背景下的客流分配方法。同时,利用换乘意愿这一指标综合测算乘客在同站台换乘时产生的换乘等待心理感知时间,以更全面地刻画乘客在同站台换乘时的决策成本。在此基础上,构建了考虑同站台换乘意愿成本的城轨跨线运营服务网络,并提出基于最优出行策略的城轨跨线运营客流分配模型,设计了相应算法并结合算例进行乘客出行路径搜索、客流分配比例计算及乘客出行时间计算。结果表明,考虑乘客同站台换乘意愿后,乘客的最大换乘次数为1次,且能够排除不合理换乘路径,提高了客流分配模型的效率,且客流分配结果更加贴合乘客真实出行情况。

This paper takes the"Y/T"cross-line operation mode,which is common in urban rail transit,as an example.In the crossline operation of urban rail transit,passengers have various modes of travel and complicated travel decisions.In this paper,we consider the passenger's decision to transfer at each station,use the same platform transfer to direct cross-line trains as one of the passenger travel strategies,and study the passenger flow assignment method in the context of cross-line operation.At the same time,the psychological perception time of passengers waiting for interchanging at the same station is measured by using the indicator of transfer willingness in order to provide a more comprehensive picture of passengers'decision cost when interchanging at the same station.Based on this,this paper constructs a service network for cross-line operation considering the cost of willingness to transfer at the same station and proposes a passenger flow assignment model for cross-line operation based on the optimal travel strategy,and finally designs the corresponding algorithm and carries out passenger travel route search,passenger flow allocation ratio calculation and passenger travel time calculation with the example.The results show that the maximum number of passenger transfers is one when considering the passengers'willingness to transfer at the same station,and the unreasonable transfer path can be excluded.This method improves the efficiency of the passenger flow assignment model,and the passenger flow assignment results are more accurate to the actual travel situation of passengers.