A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Multi‐hazard upgrade decision making for critical infrastructure based on life‐cycle cost criteria
The life‐cycle cost can be regarded as a benchmark variable in decision making problems involving the retrofit and upgrading of existing structures. A critical infrastructure is often subjected to more than one hazard during its lifetime. Therefore, the problem of evaluating the life‐cycle cost involves uncertainties in both loading and structural modeling parameters. The present study is a preliminary study aiming to calculate the expected life‐cycle cost for a critical infrastructure subjected to more than one hazard in its service lifetime. A methodology is presented that takes into account both the uncertainty in the occurrence of future events due to different types of hazard and also the deterioration of the structure as a result of a series of events. In order to satisfy life safety conditions, the probability of exceeding the limit state of collapse is constrained to be smaller than an allowable threshold. Finally, the methodology is implemented in an illustrative numerical example which considers a structure subjected to both seismic hazard and blast hazard in both upgraded and non‐upgraded configurations. It is demonstrated how expected life‐cycle cost can be used as a criterion to distinguish between the two choices while satisfying the life safety constraint. Copyright © 2011 John Wiley & Sons, Ltd.
Multi‐hazard upgrade decision making for critical infrastructure based on life‐cycle cost criteria
The life‐cycle cost can be regarded as a benchmark variable in decision making problems involving the retrofit and upgrading of existing structures. A critical infrastructure is often subjected to more than one hazard during its lifetime. Therefore, the problem of evaluating the life‐cycle cost involves uncertainties in both loading and structural modeling parameters. The present study is a preliminary study aiming to calculate the expected life‐cycle cost for a critical infrastructure subjected to more than one hazard in its service lifetime. A methodology is presented that takes into account both the uncertainty in the occurrence of future events due to different types of hazard and also the deterioration of the structure as a result of a series of events. In order to satisfy life safety conditions, the probability of exceeding the limit state of collapse is constrained to be smaller than an allowable threshold. Finally, the methodology is implemented in an illustrative numerical example which considers a structure subjected to both seismic hazard and blast hazard in both upgraded and non‐upgraded configurations. It is demonstrated how expected life‐cycle cost can be used as a criterion to distinguish between the two choices while satisfying the life safety constraint. Copyright © 2011 John Wiley & Sons, Ltd.
Multi‐hazard upgrade decision making for critical infrastructure based on life‐cycle cost criteria
Jalayer, F. (author) / Asprone, D. (author) / Prota, A. (author) / Manfredi, G. (author)
Earthquake Engineering & Structural Dynamics ; 40 ; 1163-1179
2011-08-01
17 pages
Article (Journal)
Electronic Resource
English
Multi‐hazard upgrade decision making for critical infrastructure based on life‐cycle cost criteria
| Online Contents | 2011
Infrastructure management: Decision support and life cycle cost analysis
| British Library Conference Proceedings | 1999
RETHINKING WHOLE LIFE CYCLE COST BASED DESIGN DECISION-MAKING
| British Library Conference Proceedings | 2004
A review of multi-criteria decision-making methods for infrastructure management
| Online Contents | 2014