Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/30201
Title: Nonlinear characteristics of damaged concrete structures under vehicular load
Authors: Law, SS
Zhu, XQ
Keywords: Bridge decks
Concrete structures
Concrete, reinforced
Continuous beams
Damage
Frequency analysis
Signal processing
Issue Date: 2005
Publisher: American Society of Civil Engineers
Source: Journal of structural engineering, 2005, v. 131, no. 8, p. 1277-1285 How to cite?
Journal: Journal of structural engineering 
Abstract: This paper investigates the possibility of using changes in the nonlinear characteristics of the reinforced concrete structures under vehicular loads to detect damage. An experimental study is carried out on a Tee-section reinforced concrete beam subject to the action of a moving model vehicle. Vertical accelerations and displacements are measured while the vehicle crosses the bridge. Nonlinearities are detected by examining the changes in the instantaneous frequency when the vehicular loads are at different locations along the beam. Results demonstrated that the large changes in the vibration behavior due to the damage could be amplified by the presence of vehicular load on top of the beam. A damage index, based on the flexural rigidity of the beam, is proposed which can be an indicator for the assessment of reinforced concrete bridge deck under vehicular load.
URI: http://hdl.handle.net/10397/30201
ISSN: 0733-9445
EISSN: 1943-541X
DOI: 10.1061/(ASCE)0733-9445(2005)131:8(1277)
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