Compressing Arrival Interval By Optimizing Receiving-departure Track Application Of High-speed Railway Station

Since the planning and construction of high-speed railways in China in the 1990 s,China has achieved remarkable results,however,the level of operation is still far from the advanced level in the world.Not only that,China ’s main high-speed railway passenger transportation capacity is insufficient to meet the growing travel needs of passengers.The high-speed railway station represented by the Beijing-Shanghai high-speed railway is becoming increasingly problematic in terms of the ability to arrive at the departure line,especially during peak hours.At this time,if it is possible to ensure that the trains are reasonably arranged at the station,and optimize the application of the train’s arrival and departure line,it is of great practical significance for compressing the train interval time,and thereby improving the efficiency and passing ability of the station’s pick-up and departure.First,this article explains the concepts of train interval time,and summarizes the factors affecting the train interval from the factors of the verification formula.The usage of the arrivaldeparture line involves various factors,which are of great significance to the compression of the train arrival interval.Next,This article introduces two important criteria for judging train interval,time-train buffer time and operating time,and explains the concept of the two and the impact of buffer time on train interval time.Secondly,this paper analyzes the influence mechanism of the arrival and departure line on the train interval.The arrival and departure line usage scheme determines the route occupied by the train in the throat area of the station.The conflict between the routes and the way of unlocking the route affect the station interval of the train.Then this article takes Shanghai Hongqiao Station as an example,takes two adjacent arriving trains of the same direction as object,and uses simulation methods to study the effect of the arrival-departure line application schemes in different unlocking methods on the train arrival interval compressing.Then,based on the unlocking method in sections,the paper analyzes the mechanism of the train arrival interval compression by arrival-departure line.However,because high-speed railway stations often connect multiple running directions,simulation methods cannot accurately analyze the impact of the arrival and departure schedule on the station interval in the complex case of multiple consecutively arriving trains.Therefore,from the perspective of optimization,this article considers all trains in a period of time from different directions,and constructs the integer linear programming model of usage of arrivaldeparture line.It is used to study the compression of train arrival interval in the high-speed railway station connecting multiple operating directionsThen,this paper takes a high-speed railway station as an example to analyze.A 2 hour and 60 train peak time example was used to compare arrival-departure track combination,route combination,and minimum total operating time between the front-to-back train whether the optimization of the arrival-departure line operation plan is used.The scheme can effectively use segmented unlocking to shorten the interval between trains,and reduce the total minimum operating time of the station by 315 s,which is 4.6% smaller than the preoptimization scheme.