Damage analysis of steel-concrete composite beams under static loads

Sadeghi, F; Zhu, X; Li, J

Damage analysis of steel-concrete composite beams under static loads

Sadeghi, F Zhu, X

Li, J

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Publication Type:: Conference Proceeding
Citation:: Proceedings of the International Conference on Structural Dynamic , EURODYN, 2020, 1, pp. 1053-1062
Issue Date:: 2020-01-01

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Field	Value	Language
dc.contributor.author	Sadeghi, F
dc.contributor.author	Zhu, X https://orcid.org/0000-0001-5083-9320
dc.contributor.author	Li, J https://orcid.org/0000-0002-2526-3048
dc.date.accessioned	2021-02-23T04:41:06Z
dc.date.available	2021-02-23T04:41:06Z
dc.date.issued	2020-01-01
dc.identifier.citation	Proceedings of the International Conference on Structural Dynamic , EURODYN, 2020, 1, pp. 1053-1062
dc.identifier.isbn	9786188507203
dc.identifier.issn	2311-9020
dc.identifier.uri	http://hdl.handle.net/10453/146314
dc.description.abstract	© 2020 European Association for Structural Dynamics. All rights reserved. This paper presents a study of the static behavior of steel-concrete composite beams with different types of damage. Since the behavior of a composite beam under load is governed by the shear connection, it is important to investigate the overall structural response due to different levels of damage in the interface and composite layers. A finite element (FE) model of a steel-concrete composite beam is developed based on two Euler-Bernoulli beams as the composite layers coupled with a deformable shear connection. Three different damage indices are defined for the concrete slab, the steel girder, and the distributed shear connection and then embedded into the stiffness matrix of the composite beam. This model is validated by comparing its load-displacement behavior with an equivalent FE model developed using the commercial FE software ABAQUS. The impact that the loading location has on the results is then investigated. A convergence study is also carried out in terms of the displacements and strains to determine the number of composite beam FEs. The maximum displacements and strains of composite beams with different types and levels of damage are then investigated. The numerical analysis showed that after an initial reduction when the number of FEs increase, the changes in displacement and strain at each location are very small. Moreover, the bonding slip has almost no effect on the measurements, and the changes in maximum displacement and strain from undamaged to maximum damage are almost the same.
dc.language	en
dc.relation.ispartof	Proceedings of the International Conference on Structural Dynamic , EURODYN
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Damage analysis of steel-concrete composite beams under static loads
dc.type	Conference Proceeding
utslib.citation.volume	1
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	open_access	*
dc.date.updated	2021-02-23T04:41:02Z
pubs.publication-status	Published
pubs.volume	1

Abstract:

© 2020 European Association for Structural Dynamics. All rights reserved. This paper presents a study of the static behavior of steel-concrete composite beams with different types of damage. Since the behavior of a composite beam under load is governed by the shear connection, it is important to investigate the overall structural response due to different levels of damage in the interface and composite layers. A finite element (FE) model of a steel-concrete composite beam is developed based on two Euler-Bernoulli beams as the composite layers coupled with a deformable shear connection. Three different damage indices are defined for the concrete slab, the steel girder, and the distributed shear connection and then embedded into the stiffness matrix of the composite beam. This model is validated by comparing its load-displacement behavior with an equivalent FE model developed using the commercial FE software ABAQUS. The impact that the loading location has on the results is then investigated. A convergence study is also carried out in terms of the displacements and strains to determine the number of composite beam FEs. The maximum displacements and strains of composite beams with different types and levels of damage are then investigated. The numerical analysis showed that after an initial reduction when the number of FEs increase, the changes in displacement and strain at each location are very small. Moreover, the bonding slip has almost no effect on the measurements, and the changes in maximum displacement and strain from undamaged to maximum damage are almost the same.

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http://hdl.handle.net/10453/146314