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.
| Original language | English |
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| Title of host publication | Life-Cycle of Engineering Systems |
| Subtitle of host publication | Emphasis on Sustainable Civil Infrastructure - 5th International Symposium on Life-Cycle Engineering, IALCCE 2016 |
| Publisher | CRC Press/Balkema |
| Pages | 412-419 |
| Number of pages | 8 |
| ISBN (Print) | 9781138028470 |
| Publication status | Published - 1 Jan 2017 |
| Event | 5th International Symposium on Life-Cycle Engineering, IALCCE 2016 - Delft, Netherlands Duration: 16 Oct 2016 → 20 Oct 2016 |
Conference
| Conference | 5th International Symposium on Life-Cycle Engineering, IALCCE 2016 |
|---|---|
| Country/Territory | Netherlands |
| City | Delft |
| Period | 16/10/16 → 20/10/16 |
ASJC Scopus subject areas
- Civil and Structural Engineering
- Safety, Risk, Reliability and Quality