Name: Guilherme de Almeida Eleuterio
Type: MSc dissertation
Publication date: 23/03/2021

Namesort descending Role
Rodrigo de Alvarenga Rosa Advisor *

Examining board:

Namesort descending Role
Glaydston Mattos Ribeiro External Examiner *
Macksuel Soares de Azevedo Internal Examiner *
Rodrigo de Alvarenga Rosa Advisor *

Summary: In Brazil, rail freight transport has achieved a high productivity gain, thanks to the
investments that have been place in the sector in recent years. Due to the increase in
the use of railroads, there was an increase in the demand for maintenance of the
railway track structure, in order to repair the damage caused by transport. One way
to carry out maintenance on the railway track structure is through the use of railway
resources, which must be moved from one section of the railway to another. It is
necessary to elaborate the route that each resource needs to acoomplish in order to
meet maintenance orders (OMs), with some OMs having restrictions of synchronism,
precedence and priority to start the service. In this context, this research proposes a
mathematical model that considers the integration of eight different mathematical
models for vehicle routing in a single mathematical model, to plan the routes of the
resources to attend OMs, seeking to maximize the number of OMs attended in the
planning period and, at the same time, minimizing the costs per kilometer traveled for
each resource and minimizing the delay between the effective moment when OM
service starts and the time requested to start. The literature review shows that no
studies were found on the planning of the railroad resources routes to assist in the
maintenance of the track. Therefore, the study contributes to the development and
advancement in this field of research. Data from the Vitória Minas Railway (EFVM)
were used to test the model. At EFVM, currently, rail resources routes are based on
the experience of the railway maintenance planning team, so the proposed
mathematical model comes in as a support tool for the planner to develop a
maintenance plan that brings a better use of rail resources. The results showed that
the increase in the maximum period to start OM can increase the capacity of
attendance to the OMs by the maintenance team, showing to serve as a tool to
support operational and strategic decisions, making railway maintenance planning
more efficient.
Key-words: Railway Resource, Track structure, Mathematical Model and

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