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Damage detection in bridge structures including environmental effects
Nguyen, Viet Ha; Mahowald, Jean; Golinval, Jean-Claude et al.
2014In the Ninth International Conference on Structural Dynamics EURODYN 2014
Peer reviewed
 

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Keywords :
Civil engineering structures; Damage detection; Principal component analysis; Statistics; Eigenfrequency.
Abstract :
[en] Damage identification for two real big bridges in Luxembourg is carried out in this paper. Vibration responses were captured from different types of excitation such as measurable and adjustable harmonic swept sine excitation and hammer impact. Before, different analysis methods were applied to the data measured from these structures showing interesting results. However, some difficulties are faced, especially due to environmental influences (temperature and soil-behaviour variations) overlaid to the structural changes caused by damage. These environmental effects are investigated in detail in this work. First, the modal parameters are identified from the response data by means of Wavelet Transform. In the next step, they are stochastically collected and processed through Principal Component Analysis. Damage index is based on outlier analysis.
Disciplines :
Civil engineering
Author, co-author :
Nguyen, Viet Ha ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Mahowald, Jean ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Golinval, Jean-Claude
Maas, Stefan ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Language :
English
Title :
Damage detection in bridge structures including environmental effects
Publication date :
July 2014
Event name :
9th International Conference on Structural Dynamics
Event organizer :
European Association for Structural Dynamics (EASD)
Event place :
Porto, Portugal
Event date :
from 30 June to 2 July 2014
Audience :
International
Main work title :
the Ninth International Conference on Structural Dynamics EURODYN 2014
Peer reviewed :
Peer reviewed
Available on ORBilu :
since 06 September 2014

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