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Title: Life-cycle optimization of FRP-strengthening interventions for RC bridge superstructures
Authors: Yang, DY 
Frangopol, DM
Teng, JG 
Issue Date: 2017
Publisher: CRC Press/Balkema
Source: In J Bakker, DM Frangopol, K van Breugel (Eds.) Life-cycle of engineering systems : emphasis on sustainable civil infrastructure : the Fifth International Symposium on Life-Cycle Civil Engineering (IALCCE 2016), 16-19 October 2016, Delft, The Netherlands, p. 412-416. Leiden : CRC Press/Balkema, 2017 How to cite?
Abstract: This paper presents a systematic method for the optimization of strengthening interventions using fiber reinforced polymer (FRP) for reinforced concrete (RC) bridge superstructures considering two conflicting objectives: life-cycle performance and strengthening cost. The methodology is capable of finding optimal strengthening times for different structural components of an RC bridge superstructure in the form of a Pareto front that can directly facilitate the scheduling and design of FRP-strengthening interventions. Cumulative-time failure probabilities from time-dependent reliability analysis are used as an indicator of life-cycle performance. By virtue of efficient sampling algorithms, cumulative-time failure probabilities can be computed directly during the optimization process. A component-wise bookkeeping technique compatible with parallel computing is employed to further improve computational efficiency. This new method is illustrated using an RC bridge superstructure under chloride-induced corrosion. The proposed method is the first of its kind for optimizing FRPstrengthening interventions for RC bridge superstructures from life-cycle and reliability perspectives.
ISBN: 9781138028470
Appears in Collections:Conference Paper

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