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Optimisation of maintenance interventions for railway bridges
conference contribution
posted on 2017-12-06, 00:00 authored by Dwayne Nielsen, Richard EgelstaffRichard Egelstaff, Timothy McsweeneyTimothy McsweeneyMaintenance of aging infrastructure is a burden on many organisational budgets. Life Cycle Cost Analysis (LCCA) is accepted as an effective method to reduce these costs and keep within budgets. However, LCCA becomes extremely complex when applied at an individual component level. This is particularly so when there is a large population of bridges, because owners need to consider multiple maintenance strategies, varying deterioration rates and intervention intervals. To address this concern, a decision support framework is presented in this paper that proposes maintenance actions for future interventions based on a selection of maintenance strategies, while at the same time keeping within organisational budget constraints. In addition, the remaining value of surrounding bridge components is considered when assessing the most appropriate maintenance actions. Asset managers are encouraged to apply one of three strategies (refurbish, upgrade or renew) to estimate future network budgets and align with existing budgets. An important outcome from this research is a decision support framework that allows decision makers to conduct “what-if” maintenance scenarios. This framework calculates life cycle costs from life gained due to maintenance actions, maintenance costs, maintenance strategy, discount rate, intervention trigger time and minimum intervention intervals.
Funding
Category 4 - CRC Research Income
History
Start Page
1End Page
9Number of Pages
9Start Date
2014-01-01Finish Date
2014-01-01Location
Brisbane, AustraliaPublisher
InformaPlace of Publication
Sydney, NSWPeer Reviewed
- Yes
Open Access
- No
External Author Affiliations
Centre for Railway Engineering; Institute for Resource Industries and Sustainability (IRIS); School of Engineering and Technology (2013- );Era Eligible
- Yes