Overtaking Modes of Fast and Slow Trains in Urban Rail Transit
The application of fast and slow train modes in urban rail transit in China is becoming increasingly common,but there is still a lack of systematic research on the two overtaking modes of fast trains at overtaking stations.By analyzing the current research status and practical cases in China and abroad,the system capacity calculation formula was optimized and established under the existing stopping and overtaking schemes and verified by the train working diagram.The specific differences and adaptation conditions between the two overtaking modes were systematically demonstrated in terms of system capacity,operational efficiency,and overtaking station setting.The research results indicate that from the perspective of functionality and cost,the overtaking station should be set up with a double-island and four-line structure or elevated station.The non-stop overtaking mode is a solution with shorter waiting time for slow trains,less system capacity loss,and fewer overtaking stations,which is suitable for the design phase.At the same time,the possible differences between the design and actual passenger flow characteristics are considered,and the impact and corresponding measures of adjusting to first-stop and overtaking mode for fast trains during the operation phase are proposed,which can provide an effective reference for the design and operation of fast and slow train modes.
Urban Rail TransitFast and Slow Train ModeOvertaking ModeSystem CapacityOperation Efficiency