This paper proposes a multiobjective optimization approach for planning railway ballast, rail, and sleeper renewal operations. The objective is to support an informed decision that considers not only the railway track life-cycle cost (LCC) but also the track occupation times required to perform interventions. Two objective functions were minimized, as follows: (1) railway track unavailability caused by railway track maintenance and renewal operations, and (2) railway track components’ LCC. Furthermore, to rationalize the renewal strategy, the model considers a multicomponent formulation that assesses, in time and space, the opportunistic combination of railway track renewal activities. A numerical application of the model on a real case study (Lisbon-Oporto line) is developed and discussed. The results show the interest of using this simple multiobjective optimization approach to obtain a decision-making process to support the scheduling of major railway track renewal works with an informed LCC-unavailability trade-off.
Availability Approach to Optimizing Railway Track Renewal Operations
Journal of Transportation Engineering ; 139 , 9 ; 941-948
2013-05-15
82013-01-01 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Availability Approach to Optimizing Railway Track Renewal Operations
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