城市公交线网优化方法的研究与应用

城市公共交通线网优化是城市交通规划的主要组成部分之一.它是解决目前城市居民普遍面临的＂乘车难＂的有效措施,具有非常重要的现实意义.该文根据城市公交线路的功能,将公交线路划分为公交主干层、公交次干层和公交支线层3个层次,并建立了3个层次的公交网络设计优化模型,提出了基于蚁群算法的＂分层建模,优化成网＂规划方法.在一个包括9个交通小区,35个节点的路网中,应用上述方法,对公交线路网络进行了设计.实证表明＂分层建模,优化成网＂设计方法增加了公交线路的覆盖范围,提高了站点的覆盖率,减少了乘客的平均换乘次数.

Research on the Method of Urban Traffic Network and its applications

Optimization of urban pubic transport networks is one of main part of urban passenger transport traffic planning.It can effectively solve ride difficulty problem,which is widely faced in most of cities at present time,and has important practical significance.This article divided the urban public traffic line into the main skeleton layer,the inferior skeleton layer and the branch＇s layer,and built the optimal models of the three layers.Based on this model and ant colony algorithm,we proposed ＂hierarchical modeling,optimizing for joining the bus network＂.Finally,it was applied to optimize a city＇s public traffic network with nine traffic zones and thirty-five nodes.It was proved that it can increase the traffic line＇s coverage,improve the site＇s coverage rate,and reduce the passenger＇s average transfer times.