Journal
STRUCTURE AND INFRASTRUCTURE ENGINEERING
Volume 11, Issue 10, Pages 1263-1276Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/15732479.2013.845578
Keywords
bridges; infrastructure management; life cycle cost; Markov models
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Funding
- Portuguese Foundation for Science and Technology (FCT) [SFRH/DB/49255/2008]
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This study presents a life cycle cost prediction and cost minimisation methodology for a set of highway concrete bridges, during a medium or a long period of time, in order to facilitate the decision process of the structure management. This methodology takes into consideration bridge intervention costs in addition with some Markov matrices degradation model. It applies a genetic algorithm in order to identify the optimised intervention plan, considering the available budget and the desired minimum performance level. Some Portuguese direct and indirect cost parameters, associated with different types of interventions during bridges lifetime, are presented. Finally, a probabilistic sensitivity analysis is carried out using Monte Carlo simulations.
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