Periodic seismic performance evaluation of highway bridges using structural health monitoring system
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Title
- Periodic seismic performance evaluation of highway bridges using structural health monitoring system
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Author(s)
- Yi, Jin-Hak; Kim, Dookie; Feng, Maria Q.
- KIOST Author(s)
- Yi, Jin-Hak(이진학)
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Alternative Author(s)
- 이진학
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Publication Year
- 2009-03-30
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Abstract
- In this study, the periodic seismic performance evaluation scheme is proposed using a structural health monitoring system in terms of seismic fragility. An instrumented highway bridge is used to demonstrate the evaluation procedure involving (1) measuring ambient vibration of a bridge under general vehicle loadings, (2) identifying modal parameters from the measured acceleration data by applying output-only modal identification method, (3) updating a preliminary finite element model (obtained from structural design drawings) with the identified modal parameters using real-coded genetic algorithm, (4) analyzing nonlinear response time histories of the structure under earthquake excitations, and finally (5) developing fragility curves represented by a log-normal distribution function using maximum likelihood estimation. It is found that the seismic fragility of a highway bridge can be updated using extracted modal parameters and can also be monitored further by utilizing the instrumented structural health monitoring system.
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ISSN
- 1225-4568
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/4313
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DOI
- 10.12989/sem.2009.31.5.527
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Bibliographic Citation
- STRUCTURAL ENGINEERING AND MECHANICS, v.31, no.5, pp.527 - 544, 2009
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Publisher
- TECHNO-PRESS
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Subject
- AMBIENT VIBRATION; GENETIC ALGORITHM; ANCIENT AQUEDUCT; IDENTIFICATION
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Keywords
- seismic performance evaluation; seismic fragility curve; model updating; genetic algorithm; output-only modal identification
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Type
- Article
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Language
- English
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Document Type
- Article
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