Accessibility of"One City,Two Airports"in Chengdu under Various Traffic Conditions
In order to investigate the spatio-temporal patterns of accessibility in the context of multifaceted transportation and optimize the allocation of aviation capacity in the"One City,Two Airports"scenario.Utilizing data from the Baidu Maps API,a weighted average travel time model for Chengdu Shuangliu International Airport and Tianfu International Airport under varying time-dependent traffic conditions was constructed to conduct an analysis of the accessibility spatial patterns of these two airports under two distinct travel modes:driving and public transportation.The results show that the commissioning of Tianfu International Airport has led to a"balanced east-west"spatial distribution of the service areas of Chengdu's hub airports.The 1 h coverage areas of the two airports are spatially complementary in the driving mode,and the 2 h coverage areas of the two airports are spatially complementary in the public transport mode.The accessibility of airports in Chengdu under driving mode is higher than that of public transportation mode,and the 1 h coverage area of driving mode starts to overlap and the 1.5 h accessibility coverage has completely covered the main urban area.While the 1.5 h coverage area of public transportation starts to overlap and the 3 h accessibility coverage basically covers the main urban area and shows the phenomenon of"better accessibility in the west and worse accessibility in the east".With Chengdu as a transit point,Shuangliu Airport has a more efficient transit,showing the advantages of its location,and the accessibility of public transportation to the eastern edge of the main urban area of Chengdu is extremely poor.The commissioning of the Tianfu Airport and supporting road infrastructure has greatly improved the accessibility of Chengdu county-level region,including a significant increase in travel convenience for residents in Jianyang City of Chengdu,and Jintang County,Qingbaijiang District weekend travel congestion significantly reduced.
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