Exact Dynamic Characteristic Analysis of Steel-Concrete Composite Continuous Beams

Sun, Q; Zhang, N; Yan, G; Zhu, X; Liu, X; Li, W

Exact Dynamic Characteristic Analysis of Steel-Concrete Composite Continuous Beams

Sun, Q Zhang, N Yan, G Zhu, X

Liu, X Li, W

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Publisher:: HINDAWI LTD
Publication Type:: Journal Article
Citation:: Shock and Vibration, 2021, 2021, pp. 1-13
Issue Date:: 2021-01-01

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Field	Value	Language
dc.contributor.author	Sun, Q
dc.contributor.author	Zhang, N
dc.contributor.author	Yan, G
dc.contributor.author	Zhu, X https://orcid.org/0000-0001-5083-9320
dc.contributor.author	Liu, X
dc.contributor.author	Li, W
dc.date.accessioned	2022-04-12T04:58:09Z
dc.date.available	2022-04-12T04:58:09Z
dc.date.issued	2021-01-01
dc.identifier.citation	Shock and Vibration, 2021, 2021, pp. 1-13
dc.identifier.issn	1070-9622
dc.identifier.issn	1875-9203
dc.identifier.uri	http://hdl.handle.net/10453/156119
dc.description.abstract	The free vibration characteristics of steel-concrete composite continuous beams (SCCCBs) are analyzed based on the Euler-Bernoulli beam theory. A modified dynamic direct stiffness method has been developed, which can be used to analyze the SCCCBs with some lumped masses and elastic boundary conditions. The results obtained by the proposed method are exact due to the elimination of approximated displacement and force fields in derivation. The proposed method is verified by comparing its results with those obtained by ANSYS software and laboratory tests. Then, the influencing factors on the reduction of natural frequency are analyzed and discussed in detail using the proposed method. The results show that stronger interfacial interaction results in higher values of natural frequency as well as larger steel subbeam and thinner concrete slab. The smaller the natural frequency of the SCCCBs is, the more significant effect the interfacial interaction on the natural frequency is. The reduction of natural frequency is not affected by the different numbers of spans but the equal single-span length and various ratios of the side span to the main span but equal total length, but it is influenced by the extra single-span length and different ratios of the side span to the main span but equal main span length. And it is only affected by bending stiffness. Furthermore, the reasonable ratio of the side span to the main span is 0.9∼1.0.
dc.language	English
dc.publisher	HINDAWI LTD
dc.relation.ispartof	Shock and Vibration
dc.relation.isbasedon	10.1155/2021/5577276
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0905 Civil Engineering, 0913 Mechanical Engineering
dc.subject.classification	Acoustics
dc.title	Exact Dynamic Characteristic Analysis of Steel-Concrete Composite Continuous Beams
dc.type	Journal Article
utslib.citation.volume	2021
utslib.for	0905 Civil Engineering
utslib.for	0913 Mechanical 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	open_access	*
pubs.consider-herdc	false
dc.date.updated	2022-04-12T04:58:05Z
pubs.publication-status	Published
pubs.volume	2021

Abstract:

The free vibration characteristics of steel-concrete composite continuous beams (SCCCBs) are analyzed based on the Euler-Bernoulli beam theory. A modified dynamic direct stiffness method has been developed, which can be used to analyze the SCCCBs with some lumped masses and elastic boundary conditions. The results obtained by the proposed method are exact due to the elimination of approximated displacement and force fields in derivation. The proposed method is verified by comparing its results with those obtained by ANSYS software and laboratory tests. Then, the influencing factors on the reduction of natural frequency are analyzed and discussed in detail using the proposed method. The results show that stronger interfacial interaction results in higher values of natural frequency as well as larger steel subbeam and thinner concrete slab. The smaller the natural frequency of the SCCCBs is, the more significant effect the interfacial interaction on the natural frequency is. The reduction of natural frequency is not affected by the different numbers of spans but the equal single-span length and various ratios of the side span to the main span but equal total length, but it is influenced by the extra single-span length and different ratios of the side span to the main span but equal main span length. And it is only affected by bending stiffness. Furthermore, the reasonable ratio of the side span to the main span is 0.9∼1.0.

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http://hdl.handle.net/10453/156119