An Improved Method of Calculation Passing Capacity of High-Speed Railway

Research on carrying capacity of the high-speed rail station based on multi-objective optimization and simulation verification

“…In the calculation of the carrying capacity of high-speed rail track connection scheme, Min Liu et al proposed the calculation methods of station carrying capacity at different levels, including the utilization method of theoretical capacity and the simulation method of actual and effective capacity [1] ; Jiamin Zhang gave the model solving algorithm of MPLC problem-oriented multi-objective rolling optimization with constraints, and applied the model and algorithm to the calculation and evaluation of the capacity of high-speed rail lines in China [2] ; Kai Huang used actual and virtual arcs to represent the selection of trains on routes, established a model for calculating the carrying capacity of high-speed rail stations based on traction calculations, and solved it using CPLEX to convert different yard carrying capacities in equivalent amounts, thus deriving the final high-speed rail station carrying capacity [3] ; Hebi Li et al proposed a full-time iterative method for calculating the capacity of passenger-freight line railroads, which transformed the carrying capacity optimal solution issue into an optimal solution problem of drawing operating trains layer by layer on the parallel train diagram and minimizing the impact of each drawing on the target value, and verified its applicability [4] ; Shirui Gao discussed the calculation methods of carrying capacity of station throat area of the passenger rail line and the arrival and departure track with reference to the calculation methods of station capacity of general speed railroads and the new features of technical standards of passenger rail lines [5] ; Yang Yungui developed and designed the checking information system for station carrying capacity to calculate the throat carrying capacity, the arrival and departure track carrying capacity of the station and the station carrying capacity through the number of times of occupancy and occupancy time of all equipment [6] ; Bo Tang et al proposed a 5-step calculation method with the route as the object and the route occupancy time projection in the saturated state of throat operation as the core in order to efficiently calculate the carrying capacity of railroad station throats, and verified it with examples [7] ; Xinyu Wang et al proposed that the fixed numerical conclusions obtained by using a single theoretical calculation method or the method of drawing train diagrams are generally one-sided, and the results obtained by combining multiple methods can better reflect the capacity range of the arrival and departure track of the station [8] . Although relevant scholars have carried out many fruitful studies, most of them focus on the calculation of the carrying capacity of the stations on existing lines, and the calculation of the carrying capacity of the stations under various cross-line transport scenarios arising from track connection in the station is less explored and still needs to be developed; Leishan Zhou [9] proposed a multi-objective mixed-integer programming problem that calculates the carrying capacity of high-speed railways using a mathematical programming method.…”