Modeling the dynamic stiffness of cracked reinforced concrete beams under low-amplitude vibration loads

Xu, T; Castel, A

Modeling the dynamic stiffness of cracked reinforced concrete beams under low-amplitude vibration loads

Xu, T Castel, A

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Publisher:: ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
Publication Type:: Journal Article
Citation:: Journal of Sound and Vibration, 2016, 368, pp. 135-147
Issue Date:: 2016-04-28

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Field	Value	Language
dc.contributor.author	Xu, T
dc.contributor.author	Castel, A https://orcid.org/0000-0003-1619-9643
dc.date.accessioned	2022-03-31T19:29:24Z
dc.date.available	2022-03-31T19:29:24Z
dc.date.issued	2016-04-28
dc.identifier.citation	Journal of Sound and Vibration, 2016, 368, pp. 135-147
dc.identifier.issn	0022-460X
dc.identifier.issn	1095-8568
dc.identifier.uri	http://hdl.handle.net/10453/155810
dc.description.abstract	In this paper, a model, initially developed to calculate the stiffness of cracked reinforced concrete beams under static loading, is used to assess the dynamic stiffness. The model allows calculating the average inertia of cracked beams by taking into account the effect of bending cracks (primary cracks) and steel-concrete bond damage (i.e. interfacial microcracks). Free and forced vibration experiments are used to assess the performance of the model. The respective influence of bending cracks and steel-concrete bond damage on both static and dynamic responses is analyzed. The comparison between experimental and simulated deflections confirms that the effects of both bending cracks and steel-concrete bond loss should be taken into account to assess reinforced concrete stiffness under service static loading. On the contrary, comparison of experimental and calculated dynamic responses reveals that localized steel-concrete bond damages do not influence significantly the dynamic stiffness and the fundamental frequency.
dc.language	English
dc.publisher	ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
dc.relation.ispartof	Journal of Sound and Vibration
dc.relation.isbasedon	10.1016/j.jsv.2016.01.007
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	02 Physical Sciences, 09 Engineering
dc.subject.classification	Acoustics
dc.title	Modeling the dynamic stiffness of cracked reinforced concrete beams under low-amplitude vibration loads
dc.type	Journal Article
utslib.citation.volume	368
utslib.for	02 Physical Sciences
utslib.for	09 Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2022-03-31T19:29:23Z
pubs.publication-status	Published
pubs.volume	368

Abstract:

In this paper, a model, initially developed to calculate the stiffness of cracked reinforced concrete beams under static loading, is used to assess the dynamic stiffness. The model allows calculating the average inertia of cracked beams by taking into account the effect of bending cracks (primary cracks) and steel-concrete bond damage (i.e. interfacial microcracks). Free and forced vibration experiments are used to assess the performance of the model. The respective influence of bending cracks and steel-concrete bond damage on both static and dynamic responses is analyzed. The comparison between experimental and simulated deflections confirms that the effects of both bending cracks and steel-concrete bond loss should be taken into account to assess reinforced concrete stiffness under service static loading. On the contrary, comparison of experimental and calculated dynamic responses reveals that localized steel-concrete bond damages do not influence significantly the dynamic stiffness and the fundamental frequency.

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http://hdl.handle.net/10453/155810