Abstract
Background: The high-speed railway has been developed rapidly, making track allocation optimization in high-speed railway stations one of the most important problems for traffic control. Methods: This paper proposes a 0-1 nonlinear integer programming model from both infrastructure management and service perspectives to solve this problem at the tactical level. The goal is to balance the track occupation time and at the same time to minimize the total walking distance between the entrance hall and the platforms for all passengers. A pre-calculation technique of time points considering the preparation of the route and a line group method are firstly studied. In order to solve the programming, the simulated annealing algorithm is applied. Results: A case of a China high-speed railway station is used to verify the effectiveness of this model. The optimized result is much better than the original plan in some key indicators. A comparison between the proposed algorithm and an accurate method, the branch-and-bound, is demonstrated. The simulated annealing algorithm obtains almost the same result as the accurate method in a much shorter time. Conclusions: The proposed model is practicable for the the high-speed railway stations.
Highlights
The high-speed railway transportation system is a huge and complex network system, which consists of two parts: stations and lines
Current studies about the track allocation optimization in a high-speed railway station focus on the basic operations from infrastructure management perspective
The problem is solved at the tactical level from both infrastructure management and service perspectives
Summary
The high-speed railway transportation system is a huge and complex network system, which consists of two parts: stations and lines. This paper sets the length of receiving routes and departure routes as two constants by the worst situation, which means the longest routes in the station, to simplify the problem and ensure any trains can satisfy the safety requirements. The routing sections of siding tracks often have a speed limit of 40 km/h, which means the stop trains have a similar speed in the station This paper classifies the receiving–departure tracks which cannot be occupied by different trains at the same time through parallel routes, considering each side of the station, respectively, into a line group.
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