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Damage detection in slab‐on‐girder bridges using vibration characteristics
Author(s) -
Shih H. W.,
Thambiratnam D. P.,
Chan T. H. T.
Publication year - 2013
Publication title -
structural control and health monitoring
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.587
H-Index - 62
eISSN - 1545-2263
pISSN - 1545-2255
DOI - 10.1002/stc.1535
Subject(s) - structural engineering , slab , girder , deck , modal , finite element method , vibration , engineering , structural health monitoring , bridge (graph theory) , materials science , acoustics , physics , medicine , polymer chemistry
ABSTRACT This paper develops and applies a multi‐criteria procedure, incorporating changes in natural frequencies, modal flexibility and the modal strain energy, for damage detection in slab‐on‐girder bridges. The proposed procedure is first validated through experimental testing of a model bridge. Numerically simulated modal data obtained through finite element analyses are then used to evaluate the vibration parameters before and after damage and used as the indices for assessment of the state of structural health. The procedure is illustrated by its application to full scale slab‐on‐girder bridges under different damage scenarios involving single and multiple damages on the deck and girders. Copyright © 2012 John Wiley & Sons, Ltd.