Urban Accessibility Evaluation And Spatial Characteristics In Wuhan

This paper comprehensively considers the various traffic road networks in Wuhan,and uses the shortest distance and average accessibility models to measure the accessibility under different traffic patterns,including urban roads,subway networks,and intercity railway.Analyze the spatial layout characteristics of accessibility under different modes of transportation and evaluate the comprehensive traffic accessibility of Wuhan.In particular,analysis of accessibility changes before and after intercity railway construction,and identify which areas are likely to improve from accessibility and traffic conditions.With the indicators of population and economic attributes,the correlation between comprehensive traffic accessibility and population and economy is evaluated,and the correlation of each district is revealed.Furthermore,the coordination of traffic accessibility level and economic development is discussed.The research results show that the traffic accessibility of Wuhan presents the core---peripheral circle structure.Jiangan District,Hanyang District and Wuchang District are located in the center of the city,with the best accessibility,and the Hankou,Hanyang and Wuchang transportation networks focus on self-contained systems.Due to the influence of the route distribution,the accessibility pattern of the subway network and the urban internal railway network has line coupling.As a result of history,economic and natural environment factors,the correlation between traffic accessibility and economic and population development in different regions is obvious.The Hanyang area has the highest correlation,followed by the Wuchang area,and the Hankou area has the lowest correlation.It shows that economic development and the construction of transportation facilities complement each other.Coordination research shows that the proportion of coordinated display is the highest,reaching 63.57%.The main types are low accessibility,low economic development type,shortly high accessibility,shortly high economic development type,high accessibility and high economic development type.The study found that the transportation of facilities in Wuhan is basically coordinated with economic discoveries.After calculating the intercity railway,the proportion of the area with the accessibility value greater than 0.1 is obviously increasing.It has improved the accessibility level of Panlong economic development zone,Shekou street,Baiquan street and Hengdian street.It shows that intercity railway,as a part of urban internaltransportation,has contributed to the relief of urban traffic pressure and improved the traffic condition in the city.On this basis,the paper further verifies the role of urban internal railway on overall traffic conditions of the city,so as to provide reference for traffic commuting and traffic planning.