Designing a Geo-Strategic Railway Freight Network in Brazil Using GIS

Isler, Cassiano Augusto; Asaff, Yesid; Маринов, Марин

doi:10.3390/su13010085

Cited by 10 publications

(22 citation statements)

References 54 publications

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“…In the problem posed, container flows are considered as multi-product flows, therefore, on the multigraph, some vertices are connected by several equally directed arcs. There are also some arcs on the multigraph, along which container flows follow in both directionsthese are arcs (3, 4) and (4, 3); (5, 6) and (6, 5); (14,15) and (15,14).…”

Section: Resultsmentioning

confidence: 99%

“…The problem of distributing container train flows can be represented as a problem of a multicommodity flow of minimum cost, which boils down to determining the optimal option for transporting goods in a network setting [13]. The multiproduct transport problem is of great practical importance and was used by a number of authors to optimize railway network routes [14][15][16][17][18].…”

Section: Methodsmentioning

confidence: 99%

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Optimization of container traffic distribution on the railway network

et al. 2022

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The paper considers the problem of optimal redistribution of transit container flows on the railway network. The problem is proposed to be solved as the problem of a multi-commodity flow of minimum cost using the relaxation method. The relaxation method allows choosing the most efficient variant of the next solution at each iteration step. To search for the optimal distribution of container flows on the network, graph theory was used, i.e., the network is presented as a multigraph with a set of vertices and arcs, for which the costs of transporting a unit of production, the maximum and minimum values of the flows between the vertices are given, the conditions for maintaining the flow at the vertices of the graph and restrictions on the amount of flow along the arcs are given. It has been established that in order to implement the task, it is necessary to take into account the unit costs for the movement of container flows between the nodes of the railway network, taking into account the capacity of the branches between the junction stations. The developed mathematical model for the redistribution of container traffic allows you to identify areas with limited throughput, develop options for optimization measures, and, as a result, achieve an economic effect by reducing the cost of transporting containerized cargo.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Optimization of container traffic distribution on the railway network

et al. 2022

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“…Liimatainen et al [19] reported that the use of longer and heavier vehicles (LHVs) for various commodities in road freight transport can ensure considerable savings in traffic volume and emissions. Isler et al [20] designed a visualized geostrategic railway network for freight services to solve multiple freight type transport problems. Carrone et al [21] found that the use of autonomous vehicles (AVs) in regular vehicle (RV) operation areas will reshape the transport system and greatly improve capacity utilization.…”

Section: Related Workmentioning

confidence: 99%

Evolutionary game analysis of three parties in logistics platforms and freight transportation companies’ behavioral strategies for horizontal collaboration considering vehicle capacity utilization

Deng

Zhou

et al. 2022

Complex Intell. Syst.

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In China, logistics platforms are an effective way to solve vehicle capacity utilization using information sharing. However, most logistics platforms do not possess operational sustainability due to excessive profit-seeking. To address this problem, conflicts of interest among freight transportation participants are discussed using a stakeholder approach. A three-player evolutionary game model (TEGM) is developed to analyze the interactions among freight carriers, freight shippers, and logistics platforms. Then, the asymptotic equilibrium and evolutionary stability strategies of the three-player game are analyzed. The results indicate that a high-level positive network externality is the driving force behind the logistics platform’s “high-level service”. A fairness payment incentive guarantees a “sharing” strategy for freight carriers and shippers. When the high-level positive network externality is limited and lower than a threshold value, there is no stable equilibrium point in the TEGM. A government tax incentive cannot change the freight carriers’ and shippers’ strategy to participate in this horizontal collaboration system, except for the logistics platform’s probability of providing “high-level service”. However, the behavioral strategies of the freight transportation participants can be changed to achieve the sustainability of freight transportation by reducing the value-added tax rate through the logistics platform and increasing the high-level positive network externality of the logistics platform and other participants’ perceived fairness through a payment incentive. Finally, suggestions for regulating the behaviors of freight transportation participants and promoting the sustainability of freight transportation are discussed.

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“…The ISO tank container is a large container for fluids or powders, and it has considerable flexibility; in fact, its transport can take place by road, rail or ship, with the possibility of combining the three ways, with advantages in terms of costs and transport safety. It consists of a single cylindrical tank, called "tank body", arranged inside a rectangular steel frame; furthermore, the whole structure is in accordance with ISO standards, in particular ISO 1496/3 [20,21]. The most common dimensions are a length of 6.058 m, a height of 2.591 m and standard width of 2.438 m. Furthermore, the tare generally varies between 3000 and 5000 kg; by tare, we mean the mass of the empty tank container in its normal operating conditions, i.e., including all accessories and associated equipment.…”

Section: Tank Container For Foodstuffmentioning

confidence: 99%

Study of Tank Containers for Foodstuffs

et al. 2021

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In this study, we examined a tank container for foodstuff that is generally used for the transport of foodstuffs. With the aid of the “ANSYS R17.0” program code, a numerical model of the tank container for foodstuffs was realized. Further, to validate the considered model, the tank container considered was submitted to the most important ISO tests concerning both its support frame and the tank. The results obtained from the FEM analysis, in terms of displacement for each test, were compared with those provided by the manufacturer and related to the tank container considered, evaluating the difference between the numerical results with the experimental ones. This allowed us to validate the model examined. Furthermore, the results obtained from each test, in terms of stress, have made it possible to locate the areas with the highest equivalent stress and quantify the maximum value, comparing it with the allowable stress. In this way, a better understanding of the structure was achieved, and it was detected that the most stressed area is that of the connections between the container and the frame. Furthermore, modal analysis was carried out, in which the natural frequencies relating to the most dangerous modes of vibrations were found, that is, with the lowest frequency values. Finally, changes for the considered tank container were examined, and it was found that, by changing parameters, such as the thickness of the plate and skirt, and subsequently acting on the arrangement of the corner supports, the highest value of the stresses generated by the loads related to the ISO tests, it is significantly lowered, resulting in a better distributed stiffening of the structure and a reduction, although minimal, of weight. It is evident that this modeling and validation method, suitably integrated by further calculation modules, can be used in an iterative optimization process.

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Designing a Geo-Strategic Railway Freight Network in Brazil Using GIS

Cited by 10 publications

References 54 publications

Optimization of container traffic distribution on the railway network

Optimization of container traffic distribution on the railway network

Evolutionary game analysis of three parties in logistics platforms and freight transportation companies’ behavioral strategies for horizontal collaboration considering vehicle capacity utilization

Study of Tank Containers for Foodstuffs

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