Evolution Model of Urban Road Network

Abstract:

In order to explore the evolution rule of urban road network,the paper presents a road network evolution model based on the vein growth model and an analysis of the generation mechanism of new nodes in the network.According to this mechanism,a connection rule among the generated nodes and existing road network was established.A case study was made of Pudong New District of Shanghai on the relationship among nodes generation proportion and indicators such as economy and populations,and a node generation proportion model was proposed.The proposed network evolution model was employed to simulate the evolution of road network in different years.Some complex network indicators were defined to compare the actual and simulated road network.The results demonstrate that the road network evolution model is able to simulate the evolution of the actual road network.