基于复杂网络的交通阻抗模型研究

针对城市道路交通拥堵及路网道路使用不合理的交通现状,将影响交通阻抗的因素分为交通流特性和路网结构特性两大类;结合ArcGIS、UCINET以及Matlab等工具,通过复杂网络理论量化网络结构特性对交通阻抗的影响;采用节点收缩方法从结构上确定其对交通阻抗的影响,并与BPR路阻函数相结合,建立综合阻抗的参数模型;根据熵权法来确定模型中的ψ、ω两个参数值。最后以天津市部分城市道路网络为例,进行实例验证,结果表明综合阻抗算法更精确地表征了城市道路网络的交通阻抗。

Research on traffic impedance model based on complex network

According to the congestion of the city traffic situation and the use of the road is unreasonable, and the factors of the traffic integrated impedance has been divided into two aspects: the characteristics of traffic flow and the characteristics of the structure network; Under the ArcGIS, UCINET, MATLAB, visualize the network topology, and then quantize the structural characteristics of network which affects the traffic impedance; parameter model of an integrated impedance with BPR impedance function, and there are two parameters should be determined by entropy weight method. At last part, use the method in part of the road network in Nankai District, Tianjin , the results show that the combined impedance algorithm is more accurate .