A Study On A Mathematical Model Of
The Track Maintenance Scheduling Problem
Author(s)
S. M. Oh, J. H. Lee, B. H. Park, H. U. Lee & S. H. Hong
Abstract
This paper presents a mathematical model of the long-term track tamping
scheduling problem in the Korean high-speed railway system. The presented
model encompasses various operational field constraints and moreover improves
a state-of-the-art model in extending the feasible space. We show the model is
sized up to intractable scale, then propose another approximation model that can
be handled with the present computer system and commercial optimization
package directly. The aggregated index, lot, is selected, considering the
resolution of the planning horizon as well as the scheduling purpose. Lastly, this
paper presents two test results for the approximation model. The results show the
approximation model to be quite promising for deployment into an operational
software program for the long-term track tamping scheduling problem.
Keywords: tamping scheduling, mathematical model, index aggregation.
1 Introduction
In the ballasted track system, the amount of gauge irregularity increases in
proportion to the accumulated tonnage passed. When the amount of gauge
irregularity is greater than a certain level, it results in not only the worse quality
of traveling, but also a serious effect on traveling safety of trains. Therefore, the
maintenance works of track systems are carried out based on the predetermined
Keywords
tamping scheduling, mathematical model, index aggregation.
Related Book
Other papers in this volume
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