网络拓扑结构对交通流量分布特性的影响分析

分析城市交通网络特性,建立双层城市交通网络模型,其中下层为道路网络,上层为出行网络.以节点平均负荷、拥堵节点、网络负荷标准差、基尼系数为主要指标,研究居民出行网络拓扑结构变化过程中道路网络流量分布的变化情况.研究结果显示,出行网络拓扑结构对交通量分布有较大影响,且存在最优出行网络结构,使城市交通状况达到最佳.

Study on the Network Topology's Impact on Characteristics of Traffic Flow Distribution

Based on analyzing the characteristics of urban traffic network,a bi-level urban traffic network model is established,in which the lower level represents the road network and the upper level represents the trip network.Taking the average load of node,jam node,standard deviation of network load and Gini coefficient as the main indices,the author researches the change status of flow distribution of road network for network topology structure of resident trips.The result shows that the trip network topology has great influence on distribution of traffic volume,and optimum trip network structure exists which adapt to urban traffic conditions.