Models of degradation in railway pavement from a systematic review

Abstract

One of the main factors that accelerates the degradation of the railway pavement in recent years is the increase in cargo handling, caused by the new demands demanded by the national and international market. Consequently, maintenance interventions to correct the track geometry are challenged, requiring new techniques capable of providing cost reductions in maintenance and renovation. Railway companies in Brazil have high amounts of spending on maintenance interventions along the concession stretch, reaching 12.4% in the superstructure and 18.9% in the rolling stock. Therefore, the objective of this work is to identify articles that present the use of degradation models on the railway pavement in the scientific literature using the technique of bibliometric analysis and systematic review, making it possible to verify the type of degradation (geometric or structural), parameters and the results obtained in each search. It was observed that the degradation models provide the identification of the moment of demand for application of maintenance and renovation of the track, using the international technical standards of track quality indexes or state of the railway components.