Abstract:To match the design target of 72 million passenger person-time in 2025 of Beijing Daxing International Airport, the "five-vertical and two-horizontal" traffic network including rail transit, intercity railway and expressway will be built within Beijing. In order to solve the design difficulties of multiline common corridor within the longitudinal channel, the cases of collinear sections in Shanghai and Ningbo are analyzed, and then the characteristics of the expressway, highway and urban track collinear section for Beijing Daxing International Airport are summarized. On this basis, the difficulties and essentials in the section selection, vertical control and traffic organization of highway and urban track collinear section within the common corridor are analyzed and studied. The design indexes, traffic functions, social benefits and economic benefits are analyzed and evaluated. Combined with the projects, the design experience of collinear section of highway and urban track projects is summarized from five aspects of plane linear position, vertical section, cross section and the others, which can be referred for promoting the multiline collaborative design, optimization design and intensive design in the future.
