Lateral behaviour of hybrid cold-formed and hot-rolled steel wall systems: Experimental investigation

Mortazavi, M; Sharafi, P; Ronagh, H; Samali, B; Kildashti, K

Lateral behaviour of hybrid cold-formed and hot-rolled steel wall systems: Experimental investigation

Mortazavi, M

Sharafi, P Ronagh, H Samali, B Kildashti, K

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Publisher:: ELSEVIER SCI LTD
Publication Type:: Journal Article
Citation:: Journal of Constructional Steel Research, 2018, 147, pp. 422-432
Issue Date:: 2018-08-01

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Field	Value	Language
dc.contributor.author	Mortazavi, M https://orcid.org/0000-0001-5123-7903
dc.contributor.author	Sharafi, P
dc.contributor.author	Ronagh, H
dc.contributor.author	Samali, B
dc.contributor.author	Kildashti, K
dc.date.accessioned	2022-09-03T21:03:23Z
dc.date.available	2022-09-03T21:03:23Z
dc.date.issued	2018-08-01
dc.identifier.citation	Journal of Constructional Steel Research, 2018, 147, pp. 422-432
dc.identifier.issn	0143-974X
dc.identifier.issn	1873-5983
dc.identifier.uri	http://hdl.handle.net/10453/161286
dc.description.abstract	The seismic design of light steel frames (LSF) can not only rely on the application of cold-formed steel (CFS). Some mixed systems and integrated solutions such as hybrid systems can offer new possibilities, in particular with regard to applications in mid-rise construction. A hybrid solution is to replace some CFS chord studs with hot-rolled square hollow section SHS, in order to achieve higher capacity. This paper provides the results of experimental studies on the lateral behaviour of a hybrid light-weight steel panel and investigates the implication of any further system improvements for mid-rise construction. Each hybrid wall panel (HWP) consists of a hot-rolled SHS frame, laterally incorporated in a cold-formed panel. The study includes investigating the lateral performance of HWP, while a CFS top chord acting as a load collector, and a hot-rolled steel frame acting as a lateral load resisting system. The behaviour of specimens is investigated under monotonic and cyclic loads, and the step-by-step enhancement is implemented according to the results. The outcomes revealed that although the hysteretic behaviour of the HWP represents pinching effect, mainly due to poor performance of the cold-formed steel collector, by strengthening the top chord design the behaviour is improved. Relying on the cold-formed part to resist the major portion of gravity loads, while the hot-rolled collector transfers the entire lateral load to the hot-rolled frame, results in significantly improved hysteretic behaviour.
dc.language	English
dc.publisher	ELSEVIER SCI LTD
dc.relation.ispartof	Journal of Constructional Steel Research
dc.relation.isbasedon	10.1016/j.jcsr.2018.04.035
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering, 0915 Interdisciplinary Engineering, 1202 Building
dc.subject.classification	Civil Engineering
dc.title	Lateral behaviour of hybrid cold-formed and hot-rolled steel wall systems: Experimental investigation
dc.type	Journal Article
utslib.citation.volume	147
utslib.for	0905 Civil Engineering
utslib.for	0915 Interdisciplinary Engineering
utslib.for	1202 Building
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	2022-09-03T21:03:20Z
pubs.publication-status	Published
pubs.volume	147

Abstract:

The seismic design of light steel frames (LSF) can not only rely on the application of cold-formed steel (CFS). Some mixed systems and integrated solutions such as hybrid systems can offer new possibilities, in particular with regard to applications in mid-rise construction. A hybrid solution is to replace some CFS chord studs with hot-rolled square hollow section SHS, in order to achieve higher capacity. This paper provides the results of experimental studies on the lateral behaviour of a hybrid light-weight steel panel and investigates the implication of any further system improvements for mid-rise construction. Each hybrid wall panel (HWP) consists of a hot-rolled SHS frame, laterally incorporated in a cold-formed panel. The study includes investigating the lateral performance of HWP, while a CFS top chord acting as a load collector, and a hot-rolled steel frame acting as a lateral load resisting system. The behaviour of specimens is investigated under monotonic and cyclic loads, and the step-by-step enhancement is implemented according to the results. The outcomes revealed that although the hysteretic behaviour of the HWP represents pinching effect, mainly due to poor performance of the cold-formed steel collector, by strengthening the top chord design the behaviour is improved. Relying on the cold-formed part to resist the major portion of gravity loads, while the hot-rolled collector transfers the entire lateral load to the hot-rolled frame, results in significantly improved hysteretic behaviour.

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http://hdl.handle.net/10453/161286