摘要
由于公交网络的特殊性,公交行驶时间与路段流量关联性很小,同时存在着公交车的容量限制,所以,传统的公交网络模型存在着诸多不足。基于此提出拥挤函数概念描述出行阻抗与流量的关系,结合公交出行时间链对公交网络阻抗进行研究,建立基于站点的多路径 容量限制的概率分配模型并对其算法进行分析探讨。最后将模型应用到扬州公交网络实际项目配流中,结果表明,该模型在应用中具有较高的准确性和可靠性。
The conventional model of public transit assignment has many limitations because of particular characters of transit network,that is the limited capacity for buses and the diminutive relation of bus running time with link flow.Based on these,the concept of congestion function is proposed to describe the relation of trip resistance with flow in this paper.At the same time transit network resistance is investigated combined with transit time chain,then the multi-route probit-based loading model is established and the algorithm is analyzed.At last,the model is applied to the transit network assignment of Yangzhou.The result shows that the model can insure a high precision in the practical operation.
出处
《公路交通科技》
CAS
CSCD
北大核心
2004年第10期105-108,共4页
Journal of Highway and Transportation Research and Development
基金
国家十五科技攻关资助项目<城市公共交通系统优化技术>
关键词
公交网络
时间链
拥挤函数
网络阻抗
Transit network
Time chain
Congestion function
Network resistance
