THE URBAN RAIL TRANSIT SYSTEM TYPE SELECTION BASED ON AHP-ENTROPY-GRAY INTEGRATED CORRELATION OF DECISION-MAKING MODEL

With the rapid development of urban rail transit construction in our country, the types of rail transit systems pattern have developed from the subway to the light rail systems, suburban rail systems, district express rail systems and so on. According to city's own characteristics as well as the line function localization, to choose appropriate system pattern has the vital significance to build convenient, efficient rail transit system. Based on analysis of various system patterns, this paper constructs rail transit system type selection index system. And then it establishes the analysis-entropy-Grey integrated decision-making model by using the combination of quantitative and qualitative analysis of multi-factor decision making. At last it carries the empirical analysis on the Shanghai Metro Line No. 11 Southern Section, and the result is that the best system type option in all options of the Shanghai Metro Line No. 11 Southern Section is the District express rail system.