In view of the complexity of the allocation of shunting stations within the hub, an optimization method for the collaborative operation of multi-depot shunting within the region is constructed with the objectives of minimizing the number of shunting utilization, balancing the intensity of shunting operations, and minimizing the shunting travel routes. Taking into account the constraints of shunting allocation, quantity, flow balance, operation time window and the over-axis limit of small-run operations comprehensively, the characteristics of shunting operations are precisely depicted. To improve the solution efficiency and feasibility, a particle swarm optimization algorithm based on fuzzy programming is designed. The dynamic equilibrium among multiple objectives is achieved through fuzzy programming, and the effectiveness of decoding is guaranteed by combining the random key decoding strategy. In the case verification, taking a large railway hub as an example, the solution and comparative analysis are carried out based on the actual railway network data and operation requirements. The results show that the proposed method can increase the shunting utilization rate by approximately 25%. The variance of operation time decreases from a maximum of 1 704 to 277, and the equilibrium is significantly improved. The travel distance is reduced by approximately 30% compared to the worst case, effectively lowering the deadhead rate. This method can provide practical and feasible methodological support for the collaborative organization of multiple shunting station allocation under complex railway hubs.
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