Vibration and impedance monitoring for prestress-loss prediction in PSC girder bridges
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Title
- Vibration and impedance monitoring for prestress-loss prediction in PSC girder bridges
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Author(s)
- Kim, Jeong-Tae; Park, Jae-Hyung; Hong, Dong-Soo; Cho, Hyun-Man; Na, Won-Bae; Yi, Jin-Hak
- KIOST Author(s)
- Yi, Jin-Hak(이진학)
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Alternative Author(s)
- 이진학
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Publication Year
- 2009-01
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Abstract
- A vibration-impedance-based monitoring method is proposed to predict the loss of prestress forces in prestressed concrete (PSC) girder bridges. Firstly, a global damage alarming algorithm using the change in frequency responses is formulated to detect the occurence of damage in PSC girders. Secondly, a local damage detection algorithm using the change in electro-mechanical impedance features is selected to identify the prestress-loss in tendon and anchoring members. Thirdly, a prestress-loss prediction algorithm using the change in natural frequencies is selected to estimate the extent of prestress-loss in PSC girders. Finally, the feasibility of the proposed method is experimentally evaluated on a scaled PSC girder model for which acceleration responses and electro-mechanical impedances were measured for several damage scenarios of prestress-loss.
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ISSN
- 1738-1584
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/4346
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DOI
- 10.12989/sss.2009.5.1.081
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Bibliographic Citation
- SMART STRUCTURES AND SYSTEMS, v.5, no.1, pp.81 - 94, 2009
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Publisher
- TECHNO-PRESS
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Subject
- MODAL IDENTIFICATION; CONCRETE STRUCTURES; MATERIAL SYSTEMS; DAMAGE DETECTION; FREQUENCY; BEAM; SENSORS; FORCE
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Keywords
- structural health monitoring; prestress-loss; vibration-based damage detection; PSC girder; vibration; electro-mechanical impedance; modal parameters
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Type
- Article
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Language
- English
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Document Type
- Article
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