Research On The Problem Of The Urban Rail Transit Station’s Location

Urban City rail transit system as an effective method to solve the problem of the citytraffic jam, can effectively evacuate the passenger flow, because it offers a number ofimportant attributes including: fast operation speed, heavily bearing capacity. City rail transitstation as an import part of the city public traffic system, its construction planning, the scalelayout and other factors not only affect the rail transit network affinity for passengers, but alsoaffect the operation efficiency of rail transit network and also have a decisive impact on urbantraffic structure and passenger transport system.At present,the research on the locationproblem of the rail transit station in our country is so many, but basically confined to choosethe site according to the experience, and comparing and selecting for a given scheme, can notfundamentally solve the problem of determining the site location problem, this will makemany unreasonable places on the rail transit station layout. In order to solve this problem,thispaper made a systemic analysis and research on the location of the rail transit site, andprovides an important guiding significance to construction of the rail transit system.First of all, this paper based on the establishment of urban rail transit site of the theoryand practice research summary in domestic and abroad, introduces the classification of cityrail transit stations,and the role of the site,analyses the related factors of rail transit station,andgives the classical site selection model which commonly used, provide the basis for theestablishment of rail transit station location model for the following.Secondly,the key part of the article is to determine the initial site of rail transit based onVoronoi map. Through the analysis of the resident travel time of passengers,calculated thethreshold constants between stations which based on the minimum travel time, and accordingto the calculated threshold constants to define the rail transit station. This paper focuses on theanalysis of two kinds of situations are establishing of a new site in the existing site conditionsand planning the whole sites without knowing any sites case, considering this question fromtwo aspects: the Voronoi diagram and establishing the node location node model, and solvethe above problems by Matlab programming with establishment the mathematical model, andultimately obtained the specific location of each site. But because each location of the site isonly theoretical data, can not directly applied to this problem, so we should set up certainprinciples for designers in the study after the local situation to give us some reasonable choiceof location, through establishing the selection hierarchy and using the fuzzy AHP to give thelocation model of the site, to find out the most suitable one, then get the most suitable sites ofthe whole line.Last, according to this idea, the paper expounds the application of the method in the lastchapter of this thesis, combining the six areas of the city of Tianjin transportation line construction,the specific location of the theoretically optimal site, to which a method ofdetermining the site as an example, analyze the use of fuzzy analytic hierarchy process, wecan obtain the actual site location.