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http://hdl.handle.net/10071/12267
acessibilidade
Title: Exploring different alert limit strategies in the maintenance of railway track geometry
Authors: Andrade, A. R.
Teixeira, P. F.
Keywords: Railways
Maintenance strategy
Markov policies
Planned and unplanned costs
Railway track geometry
Issue Date: 2016
Publisher: American Society of Civil Engineers
Abstract: This paper explores a quantitative model with different maintenance strategies to control railway track geometry degradation in Portugal. The alert limits put forward by the international standards are assessed regarding the planned and unplanned impacts associated with those limits, namely preventive maintenance and renewal costs, corrective maintenance costs, planned infrastructure delays due to changes in the maximum permissible speed, and unplanned infrastructure delays due to temporary speed restrictions. The effects of different choices for the alert limits of the main quality indicators for railway track geometry are assessed, considering a cost penalty due to delays set by the regulatory entity. Finally, a sensitivity analysis is conducted on the effect of this delay cost penalty on the optimized choice of the alert limits for both quality indicators.
Peer reviewed: yes
URI: http://hdl.handle.net/10071/12267
DOI: 10.1061/(ASCE)TE.1943-5436.0000867
ISSN: 0733-947X
Ciência-IUL: https://ciencia.iscte-iul.pt/id/ci-pub-28934
Accession number: WOS:000383139900005
Appears in Collections:BRU-RI - Artigos em revistas científicas internacionais com arbitragem científica

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