Discussion on Design of Track Joining of Departure and Arrival Track of Vehicle Depot of Urban Rail Transit

Research purposes:The research on the track joining of the departure and arrival track of the vehicle depot is a very important work in the prophase design.In this paper,through comprehensively analyzing and comparing the schemes for the one-station track joining and two-station track joining of the departure and arrival track of the Xizhang Vehicle Depot of Line 1 of the Wuxi metro,the analysis is made from areas of the scale of the station where the track joins,track conditions,the interference degree on the traffic,the turn-back operation,the operation efficiency of the train departing the depot and the construction investment so as to decide the most reasonable scheme. Research conclusions:The factors of the easy operation,optimization of the plane and vertical sections conditions,reduction of the traffic interference on the main track,improvement of the operation efficiencies of the train turning back and departing and arriving at the depot and reduction of the operation cost should be considered for selection of the track joining mode of the departure and arrival track.In addition,the factors of the depot site,the main track conditions,the station scale,the traffic conditions,the operational conditions and investment should be considered to select the reasonable track joining mode in the design of the urban rail transit.According to the layout of the station,the train has the function of changing direction if possible.When selecting the track joining mode of the departure and arrival track of the depot,the factors of the regional plan and the social and economic benefits also should be considered to decide the most reasonable scheme.