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Optimum Service Life Management Based on Probabilistic Life-Cycle Cost-Benefit Analysis
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 Title & Authors
Optimum Service Life Management Based on Probabilistic Life-Cycle Cost-Benefit Analysis
Kim, Sunyong;
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Engineering structures including civil infrastructures require a life-cycle cost and benefit during their service lives. The service life of a structure can be extended through appropriate inspection and maintenance actions. In general, this service life extension requires more life-cycle cost and cumulative benefit. For this reason, structure managers need to make a rational decision regarding the service life management considering both the cost and benefit simultaneously. In this paper, the probabilistic decision tool to determine the optimal service life based on cost-benefit analysis is presented. This decision tool requires an estimation of the time-dependent effective cost-benefit under uncertainty to formulate the optimization problem. The effective cost-benefit is expressed by the difference between the cumulative benefit and life-cycle cost of a deteriorating structure over time. The objective of the optimization problem is maximizing the effective cost-benefit, and the associated solutions are the optimal service life and maintenance interventions. The decision tool presented in this paper can be applied to any deteriorating engineering structure.
Benefit;Civil Infrastructure;Life-Cycle Cost;Maintenance;Optimization;Service Life Management;
 Cited by
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