摘要
考虑到目前大城市公交网络规模具有动态增长的特征,提出一个城市公交网络新模型,对新模型模拟与实证研究的结果表明:城市公交网络的度分布近似指数分布,具有近似幂律特性和局域特性,有较高的聚类系数和短的平均路径长度,表现出小世界特性。运用复杂网络中的标准主方法理论,对南昌市的公交网络复杂特征量进行讨论,分析了南昌市公交线路规划、建设存在的不足。在此基础上对南昌市的公交路线提出两个优化方案——建立快速公交系统和公交专用干线,实验数据证明该方案可以减小公交网络的平均路径长度、增大聚类系数,这对缓解南昌市拥挤的交通具有积极的意义。
Regarding the characteristics of dynamic growth of the large scale city transit network, a new model of city public transportation network is put forward, and after modeling and studies, the results show that： the city bus network degree distribution almost takes on an exponential pattern, with approximate power-law characteristics and local characteristics, has higher clustering coefficient and average path length, and exhibit small world properties. By means of the theory of complex network in the standard method, complex of Nanchang City transit network characteristics are discussed, the shortcomings of bus line planning and construction of Nanchang city are analyzed. On the basis two optimization programs for Nanchang city bus routes are proposed： establishment of rapid transit system and bus-only lanes. The experimental data show that the scheme can reduce the average path length and increase the clustering coefficient of bus network, which has positive significance for mitigate the congested traffic in Nanchang city.
出处
《公路》
北大核心
2015年第11期126-131,共6页
Highway
基金
国家自然科学基金
项目编号51167014
50967003
50467003
关键词
城市交通
复杂网络
复杂系统
动态增长
线路优化
city traffic
complex network
complex system
dynamic growth
route optimization
