常规公交站台容纳线路能力计算模型

从公交站台停靠线路数和线路特征入手,运用排队理论建立公交站台容纳线路能力的计算模型.该模型充分反映了公交车到达特性对公交站台通行效率的影响,从理论上计算公交站台车位数与站台容纳线路及线路特征的定量关系,为公交站台的车位数以及线路数的设计提供理论设计依据.运用该模型对南京市某公交站台进行了实例分析,对公交站台的线路数进行了优化分析.从实例计算结果可以看出,公交站台的实际流量小于其通行能力,但仍常出现公交车排长队现象,导致站台内拥堵,其原因主要是公交车到达的不均匀性.合理设置站台的线路数和线路发车频率可以有效地控制站台内公交车的排队长度,减少公交车在站的运行延误.

Calculation process research of routine bus-stop routes capacity

Based on queue-theory,a calculation model of bus-stop routes capacity is constructed,which reflects how the bus arriving characteristics influence the bus-stop travel efficiency and quantifies the relation of routes capacity and berths.These researches provide a theoretical basis for berth's design and routes capacity design of bus-stop.Finally,a practice of bus-stop optimization is performed for some bus-stop in Nanjing.Although the factual bus flow was under the travel capacity,long queue was found in bus-stop frequently resulting in bus jam.It is mainly because of the bus uneven arriving,and it will be an efficient method to control the queue by designing the number of route and frequency of bus reasonably,which will decrease the delay of bus in bus-stop remarkably.