Research on Topological Properties of Public Transport Network in Chengdu Based on Complex Network

In order to analyzing the topological properties of public transport network in Chengdu, we gathered the data of the public transport by January 20^th, 2014 and built the directed-weighted network in space-of-stations based on the theory of complex networks, and the differences between up-line and down-line (inner ring and outer ring for circle line) on bus station arrangement and driving directions were considered.The results show that the average node degree of the network in space-of-stations in Chengdu is 2.52, and the node strength, with the maximum at 45 and average at 4.75, performs an uneven distribution.The network follows the power-law distribution as a whole and has obvious small world property.With the expansion of the network size from urban area to suburbs, the average minimum path length of the network increases obviously from 16.90 to 34.19.The clustering coefficient is 0.14, which reflects the high standard of the public traffic net relatively.