Optimized Preventive Maintenance Strategies for Corroded Bridge Columns in Earthquake-Prone Regions
Applying preventive maintenance (PM) strategies to corroded concrete bridge columns along their life spans is essential to reduce sudden loss in bridge functionality during earthquakes and associated risk owing to postearthquake damage. This study identifies optimized applications of condition-based PM for bridge columns with an objective to minimize seismic risk and life-cycle cost (LCC) for applying maintenance interventions. External wrapping of columns with fiber-reinforced polymer (FRP) composites and application of cathodic protection (CP) technique were used as maintenance actions. These maintenance actions were applied in four sequence-oriented strategies, namely simultaneous, FRP followed by CP, CP followed by FRP, and FRP only, to explore the benefit of different application sequences involving FRP and CP. Multiobjective optimization using the Nondominated Sorting Genetic Algorithm-II (NSGA-II) was performed for this purpose. Numerical analyses with a model column identified diverse pools of near-optimal solutions with different FRP materials (i.e., carbon and glass), their number of layers, and time of application of FRP and CP. When comparing solutions from different strategies, it was observed that earlier application of FRP was advantageous to keep the expected seismic risk of the column at a lower level for a longer duration of its design life.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/10840680
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Supplemental Notes:
- © 2022 American Society of Civil Engineers.
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Authors:
- Katikala, Sairam
- Banerjee, Swagata
- Arora, Raj Kamal
- Publication Date: 2022-8
Language
- English
Media Info
- Media Type: Web
- Features: References;
- Pagination: 04022030
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Serial:
- Practice Periodical on Structural Design and Construction
- Volume: 27
- Issue Number: 3
- Publisher: American Society of Civil Engineers
- ISSN: 1084-0680
- Serial URL: http://ascelibrary.org/loi/ppscfx
Subject/Index Terms
- TRT Terms: Bridge substructures; Columns; Corrosion; Earthquake engineering; Optimization; Preventive maintenance
- Subject Areas: Construction; Geotechnology; Highways; Maintenance and Preservation;
Filing Info
- Accession Number: 01859105
- Record Type: Publication
- Files: TRIS, ASCE
- Created Date: Sep 26 2022 9:12AM