Accounting for Network Effects in Railway Asset Management
Publication: Journal of Transportation Engineering
Volume 139, Issue 1
Abstract
System-level infrastructure management involves determining optimal maintenance, rehabilitation, and reconstruction activities for a system of facilities over a planning horizon to maximize the level of service subject to system constraints. In railway networks, different types of facilities (such as tracks, and bridges) comprise the system, and maintenance of one facility may affect the maintenance of other facilities, both economically and functionally. Therefore, when developing an asset management system for railway networks, it is essential to take into account heterogeneity and interdependency in the network. In this paper, a two-stage, bottom-up methodology is formulated to capture these interdependencies and heterogeneities in railroad infrastructure management. Numerical experiments are presented to examine the effects of economic and functional interdependencies on network optimization and to demonstrate the validity of the proposed model. The results show that accounting for heterogeneity and interdependencies at the system level can greatly influence the choice of activities and the estimated life-cycle cost.
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Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 139 • Issue 1 • January 2013
Pages: 92 - 100
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Mar 24, 2012
Accepted: Jun 19, 2012
Published online: Aug 22, 2012
Published in print: Jan 1, 2013
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