Study On The Transfer Efficiency Of Triple-line Transfer Station For Urban Rail Transit

With the accelerated process of urbanization, the internal demand of urban rail transit construction is growing. At the present time, the number of planning lines in our country has exceed 300, with a total mileage of 12,000 kilometers. Rail transit will enter a relatively complete network construction and operation stage. As one of the most important parts of rail transit network, transfer station plays a important supporting role for the transfer efficiency while its transfer efficiency also will directly impacts on the service level of the whole network.With the further construction of urban rail transit in our country, the number of multi-line transfer stations will be increasing. Consequently, it is very necessary to research the transfer efficiency of multi-line transfer station for it attract a large number of passenger flow and the relationship between transfer passenger flows are complex. The research about triple-line transfer station is the base of multi-line transfer station research. However, there has not been a reasonable design theory of triple-line transfer station so far. The paper aims to research it from the perspective of transfer efficiency.The paper mainly summarizes a series of transfer modes of triple-line transfer station, and analyzes and compares the functions and features between different modes. Then, the paper sums up the formula for transfer directions by analyzing the features of transfer passenger flow and calculating their transfer directions at triple-line transfer station. Besides, the paper summarizes the design principles of triple-line transfer station from civil engineering costs, complexity of reserve project, enablement of project, convenience of organization and management of transfer passenger and so on.On the basis of the analyzing the transfer efficiency, the paper defines its concept and proposes the method of calculating the efficiency. Based on the method, the paper obtains the transfer time of different transfer passenger flows in transfer stations with different modes by building the simulation models for different transfer modes. Furthermore, the paper sorts the different transfer modes according to the level of their transfer efficiency.At last, the paper compares the level of transfer efficiency between current statue and the optimization scheme of Beijing Song Jiazhuang transfer station by building their simulation models with Vissim, and proposes plan to improve.