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Railway infrastructure asset management: the whole-system life cost analysis

Rama, Dovile; Andrews, John D.

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Authors

Dovile Rama

John D. Andrews



Abstract

Delivering the railway infrastructure whose functionality is sustainable and uncompromised in terms of safety and availability under ever decreasing budget constraints is a great challenge. The successful accomplishment of this task relies on the effective management of individual assets within a wider whole system perspective. This is a highly complex decision-making task where mathematical models are required to enable well-informed choices. In this study, a novel modelling framework is proposed for performing the whole system lifecycle cost analysis. The framework is based on two models: railway network performance and costs. Using the former model investigations of the effects of decisions can be carried out for the individual asset and the whole system. A Petri net modelling technique is used to construct the model. A form of Monte Carlo simulation is then used to obtain model results. The infrastructure performance model is then integrated with the cost model to perform the lifecycle cost analysis. A superstructure example is presented to demonstrate the application of the approach. The results show that taking into account interdependencies among the intervention activities greatly influences, not only the performance of the infrastructure, but also its lifecycle costs and thus should be included in the cost analysis.

Journal Article Type Article
Acceptance Date Nov 11, 2015
Publication Date Feb 1, 2016
Deposit Date Dec 16, 2016
Publicly Available Date Dec 16, 2016
Journal IET Intelligent Transport Systems
Print ISSN 1751-956X
Electronic ISSN 1751-9578
Publisher Institution of Engineering and Technology (IET)
Peer Reviewed Peer Reviewed
Volume 10
Issue 1
DOI https://doi.org/10.1049/iet-its.2015.0030
Keywords railway infrastructure, asset management, Petri Nets, life cycle costs, system model
Public URL https://nottingham-repository.worktribe.com/output/770938
Publisher URL http://digital-library.theiet.org/content/journals/10.1049/iet-its.2015.0030

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