Vitality Coupling Study of Stereoscopic Pedestrian System in Station Area Based on Walkability

A large number of studies believe that the superposition effect of the accessibility of the rail system and urban streets can gather urban space elements, and the coupling effect of the above-ground and underground pedestrian network systems in the rail transit station area affects the quality of public space obviously. The urban design of Qianhai in Shenzhen was taken as the research object. Based on the accessibility of the subway station area and the existing research results, the vitality indicators of the ground pedestrian streets and underground pedestrian paths in the rail transit station area were extracted and quantified by using space syntax, network analysis and attenuation superposition. Through the entropy weight method, the index integration of the above-ground and underground pedestrian networks is carried out respectively. Based on the GIS platform, the simulated values of the vitality of the above-ground and underground pedestrian networks are coupling calculated. Three coupling states in the pedestrian network in the scheme design stage are identified, and a preliminary improvement strategy is proposed for the areas with poor coupling.