Study of Bond-Slip Behavior and Constitutive Model of a New M-Section Steel-Skeleton Concrete.

Wei, J; Yang, Q; Yu, Y; Wang, Q; Zhou, L; Chen, F

Study of Bond-Slip Behavior and Constitutive Model of a New M-Section Steel-Skeleton Concrete.

Wei, J Yang, Q Yu, Y

Wang, Q Zhou, L Chen, F

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Publisher:: MDPI
Publication Type:: Journal Article
Citation:: Materials (Basel), 2022, 15, (19), pp. 6776
Issue Date:: 2022-09-29

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Field	Value	Language
dc.contributor.author	Wei, J
dc.contributor.author	Yang, Q
dc.contributor.author	Yu, Y https://orcid.org/0000-0001-9592-8191
dc.contributor.author	Wang, Q
dc.contributor.author	Zhou, L
dc.contributor.author	Chen, F
dc.date.accessioned	2023-03-23T00:06:45Z
dc.date.available	2022-09-26
dc.date.available	2023-03-23T00:06:45Z
dc.date.issued	2022-09-29
dc.identifier.citation	Materials (Basel), 2022, 15, (19), pp. 6776
dc.identifier.issn	1996-1944
dc.identifier.issn	1996-1944
dc.identifier.uri	http://hdl.handle.net/10453/168110
dc.description.abstract	In this study, the bond-slip behavior between a new type of M-section steel skeleton (i.e., M-section steel) applied in assembled shear wall structures and concrete was investigated. First, push-out tests were conducted on 21 M-section steel-concrete (MSSC) specimens, wherein the effects of the concrete cover, concrete strength, and anchorage length on the bond strength between the M-section steel and concrete were considered. Further, the crack patterns, strain distribution of M-section steel, and bond-slip curves of the MSSC specimens were investigated using conventional strain measurement and a non-contact optical three-dimensional deformation measurement system, Digital Image Correlation-3D (DIC-3D). The experimental results demonstrated that the bond-slip curves of the MSSC specimens were divided into four stages: the linear ascending, non-linear ascending, non-linear descending, and residual stages. The initial average bond strength τ¯s was mainly affected by the concrete strength and anchorage length, whereas the concrete cover and anchorage length influenced the residual average bond strength τ¯r, and the ultimate average bond strength τ¯u was affected by the concrete strength, concrete cover, and anchorage length. Consequently, a bond-slip constitutive model of M-section steel and concrete was proposed based on the experimental results, and consistency was observed in comparison with the test results, which verified the applicability of the proposed model. Furthermore, to verify the rationality of the bond-slip constitutive model, a numerical simulation was performed, wherein the bond-slip curves, stress clouds, and interfacial bond damage process of the MSSC specimens were investigated. The numerical simulation results indicated that the bond-slip constitutive model could accurately predict the entire failure process of the MSSC specimens.
dc.format	Electronic
dc.language	eng
dc.publisher	MDPI
dc.relation.ispartof	Materials (Basel)
dc.relation.isbasedon	10.3390/ma15196776
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	03 Chemical Sciences, 09 Engineering
dc.title	Study of Bond-Slip Behavior and Constitutive Model of a New M-Section Steel-Skeleton Concrete.
dc.type	Journal Article
utslib.citation.volume	15
utslib.location.activity	Switzerland
utslib.for	03 Chemical 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
utslib.copyright.status	open_access	*
dc.date.updated	2023-03-22T23:58:11Z
pubs.issue	19
pubs.publication-status	Published online
pubs.volume	15
utslib.citation.issue	19

Abstract:

In this study, the bond-slip behavior between a new type of M-section steel skeleton (i.e., M-section steel) applied in assembled shear wall structures and concrete was investigated. First, push-out tests were conducted on 21 M-section steel-concrete (MSSC) specimens, wherein the effects of the concrete cover, concrete strength, and anchorage length on the bond strength between the M-section steel and concrete were considered. Further, the crack patterns, strain distribution of M-section steel, and bond-slip curves of the MSSC specimens were investigated using conventional strain measurement and a non-contact optical three-dimensional deformation measurement system, Digital Image Correlation-3D (DIC-3D). The experimental results demonstrated that the bond-slip curves of the MSSC specimens were divided into four stages: the linear ascending, non-linear ascending, non-linear descending, and residual stages. The initial average bond strength τ¯s was mainly affected by the concrete strength and anchorage length, whereas the concrete cover and anchorage length influenced the residual average bond strength τ¯r, and the ultimate average bond strength τ¯u was affected by the concrete strength, concrete cover, and anchorage length. Consequently, a bond-slip constitutive model of M-section steel and concrete was proposed based on the experimental results, and consistency was observed in comparison with the test results, which verified the applicability of the proposed model. Furthermore, to verify the rationality of the bond-slip constitutive model, a numerical simulation was performed, wherein the bond-slip curves, stress clouds, and interfacial bond damage process of the MSSC specimens were investigated. The numerical simulation results indicated that the bond-slip constitutive model could accurately predict the entire failure process of the MSSC specimens.

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http://hdl.handle.net/10453/168110