Tehnički vjesnik, Vol. 33 No. 4, 2026.
Izvorni znanstveni članak
https://doi.org/10.17559/TV-20250925003017
Coordinated Optimization of Shunting Task Sequencing and Wagon Placement Timing in Single-Locomotive District Stations
Hongxu Chen
; Department of Transportation, Southwest Jiaotong University Hope College. NO. 8, Xuefu Avenue, Jintang County, Chengdu, Sichuan Province, China
Xiaobo Zong
; Chengdu Institude of Rail Transit, No. 96, Linqi Avenue, Jianyang City, Chengdu, Sichuan Province, China
Huan Li
; Department of Transportation, Southwest Jiaotong University Hope College, NO. 8, Xuefu Avenue, Jintang County, Chengdu, Sichuan Province, China
Yang Yang
; School of Traffic and Transportation, Beijing Jiaotong University, Haidian District, Beijing 100044, China
Xue Deng
; Chengdu Institude of Rail Transit No. 96, Linqi Avenue, Jianyang City, Chengdu, Sichuan Province, China
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* Dopisni autor.
Sažetak
In a district station equipped with only a single shunting locomotive, the efficient organization of shunting operations is crucial. To enhance operational efficiency and reduce wagon transit dwell time, this study constructs a coordinated optimization model aiming to jointly determine the sequencing of break-up and marshalling operations and the timing of wagon placement and removal operations. The model integrates detailed wagon flow connection relationships, time window constraints, yard reorganization requirements, and resource exclusivity. It defines four hierarchical optimization objectives: maximizing the number of trains that actually achieve full-axle capacity among those required to be full-axle during the shift, maximizing the number of wagons dispatched, maximizing the number of freight loadings completed, and improving plan robustness by ensuring an even distribution of buffer time periods. To solve this model, a multi-stage search algorithm is designed to generate feasible task sequences while satisfying the complex operational constraints. Furthermore, a case study based on an actual district station was conducted to validate the feasibility of the model and algorithm. The results demonstrate that the model can generate operational schemes that maximize the number of full-axle trains, increase the volume of wagons loaded and dispatched, and maintain scheduling performance stability, thereby providing a practical method for optimizing shunting operation organization in single-locomotive district stations.
Ključne riječi
break-up and marshalling sequence; district station; single-locomotive; timing of wagon placement and removal
Hrčak ID:
348701
URI
Datum izdavanja:
30.6.2026.
Posjeta: 0 *