Analysis And Research About Road Evaluation Method Of Urban Complex Traffic Network

In recent years,complex network theory has provided an important research method for urban traffic network development.Based on the theory,complex network is combined with the actual urban traffic networks.The spatial topology and complex network characteristics of urban traffic network are calculated and studied.According to the example of urban main roads in Tianjin,using the topology model of network structure is generated based on the modeling theory by the Ucinet software.The node degree,average path length,the average clustering coefficient and other basic parameters of the network are calculated with the software such as Gephi.According to the results,the whole structure of main roads of Tianjin is analyzed.The characteristic parameter and the change of robustness index of complex network during the destruction are analyzed.The results show that the main road of the traffic network near Tianjin station is belong to a small world network feature;nodes with large degree of value have a great influence on the road network;deliberate attack mode is more destructive to the network than the random attack mode.At last,the whole structure of main road network in Tianjin is analyzed and studied.Reasonable suggestions are putted forward for the operation of the whole transportation network.