Optimization for a Direct Freight Train Plan in Loading Place Based on Logistics Cost

Cao, Zhen

doi:10.1061/9780784479384.324

Cited by 4 publications

(4 citation statements)

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“…Besides, the values of input parameters were still required to be verified. Cao et al [14] analyzed possible combinatorial strategies of flows in the loading stations and combined both transport and inventory costs in the objective function and a non-linear 0-1 programming model is established. As in Ji et al [13], a small-scale numerical case is carried out and solved by enumeration method.…”

Section: Literature Reviewmentioning

confidence: 99%

The Multi-Shipment Train Formation Optimization Problem Along the Ordered Rail Stations Based on Collection Delay

Zhao

Lin

2019

IEEE Access

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In the domain of freight transportation, road transport has occupied a leading position over the past years. Unfortunately, this has contributed to increasingly air pollution. Consequently, countries around the world have been concentrated on attracting freight transportation into rail. To improve the rail transportation efficiency and then to motivate shifting bulk cargo transportation to rail, the optimization of rail operation plan becomes ever-important. As part of operation plan, the multi-shipment train formation problem (MSTFP) is studied in this paper. It not only involves which direct train should be built in the loading area but also obtains the optimal combinatorial strategy of shipments to form a train. The primary objective is to minimize the delay incurred from the collection processes of all the original stations of shipments. A nonlinear 0-1 integer programming model is proposed given train sizes, classification capacities, uniqueness condition of each shipment, and several logical constraints among decision variables. Then a linearization approach is introduced to transform the model into a linear one. The validation of the model is confirmed via a small-scale artificial case. A real-world case is carried out using the data from China rail system, based on which the effectiveness of both non-linear and linear models is compared. Finally, a sensitivity analysis is provided to evaluate the effects of enlarging the scale of shipments.

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Section: Literature Reviewmentioning

confidence: 99%

The Multi-Shipment Train Formation Optimization Problem Along the Ordered Rail Stations Based on Collection Delay

Zhao

Lin

2019

IEEE Access

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“…Moreover, the solving approach of this model was to enumerate all the variables and constraints, which is not suitable for large-scale cases. Motivated by this study, Cao et al [18] analyzed the inventory costs in loading and unloading stations, but no improvement on the solving approach was proposed. The validity of the non-linear programming model was verified by the enumeration method.…”

Section: Literature Reviewmentioning

confidence: 99%

The Systematic Optimization of Train Formation in Loading Stations

Lin¹,

Zhao²

2019

Symmetry

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This paper presents the formulation of a train formation problem in rail loading stations (TFLS) from the systematic perspective. Several patterns of train formation are analyzed thoroughly before modeling, including direct single-commodity trains, direct multi-commodity trains created in the loading stations, and direct trains originating from reclassification yards. One of the crucial preconditions is that the loading and unloading efficiencies in the loading stations and the relational unloading stations are symmetric. Based on this, a non-linear 0–1 programming model is designed with the aim of minimizing the total car-hour cost incurred by the loading, unloading, and reclassification operations, and the commercial software Lingo is employed as the solving approach. A small-scale example is carried out first to illustrate the validity of the presented model and the effectiveness of the proposed method. Then, a series of numerical cases are devised to test the model and solving approach. The computational results show that our model can be regarded as a theoretical foundation of the TFLS problem.

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“…For the 0-1 planning model, Cao [8] solved the feasibility of the freight through trains. Considering the transportation and inventory, a nonlinear 0-1 programming model was established to optimize the train operation.…”

Section: Literature Reviewmentioning

confidence: 99%

An Empirical Study on the Design of China High-Speed Rail Express Train Operation Plan—From a Sustainable Transport Perspective

Lang

Gao

et al. 2018

Sustainability

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Abstract:The sustained and steady development of China's economy has led to the rapid improvement of the logistics. At the same time, the rise of the e-commerce mode has given rise to a huge demand for express delivery and the express industry has entered a period of boom. Fortunately, China's high-speed rail network has been networked, and the development of a high-speed rail express train has entered the test stage. After the high-speed rail express train is put into use, it could effectively relieve the pressure of highway transportation and significantly reduce transport pollution. To make better use of high-speed rail transport resources and give full play to its green and efficient advantages, this study established a two-stage model of a high-speed rail express train operation plan. In the first stage, a train candidate set generation model aiming for the minimum total cost of train operation was established that considered the high-speed line carrying capacity, section flow capacity, and OD requirement satisfaction constraints, which reduces the scale of train spare parts and improves the efficiency of solution. In addition, a column generation algorithm was designed to solve the model. In the second stage, an accurate flow distribution model aiming for the optimal economic efficiency was established, and then the high-speed express train operation plan was designed completely. The computational results are encouraging and demonstrate the effectiveness of the model and solution method.

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Optimization for a Direct Freight Train Plan in Loading Place Based on Logistics Cost

Cited by 4 publications

References 0 publications

The Multi-Shipment Train Formation Optimization Problem Along the Ordered Rail Stations Based on Collection Delay

The Multi-Shipment Train Formation Optimization Problem Along the Ordered Rail Stations Based on Collection Delay

The Systematic Optimization of Train Formation in Loading Stations

An Empirical Study on the Design of China High-Speed Rail Express Train Operation Plan—From a Sustainable Transport Perspective

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