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Performance of single and built-up I-shaped cold formed steel stud under double sided walls fire exposure

2025Journal article Open access
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datacite.subject.fosEngenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
dc.contributor.authorHassoune, Mohammed
dc.contributor.authorKada, Abdelhak
dc.contributor.authorMenadi, Belkacem
dc.contributor.authorLamri, Belkacem
dc.contributor.authorYessad, Ouissam
dc.contributor.authorPiloto, Paulo A.G.
dc.contributor.authorJiang, Liming
dc.date.accessioned2025-07-02T14:30:16Z
dc.date.available2025-07-02T14:30:16Z
dc.date.issued2025
dc.description.abstractLight-gauge Steel Frame (LSF) walls are expanded nowadays due to several advantages, especially to achieve economy, sustainability and improved structural performance. The latter has stimulated designers to adopt Cold Formed Steel (CFS) members as primary components of LSF walls. However, the high thermal conductivity and slenderness of CFS sections make them vulnerable to mechanical degradation during fire. While numerous studies have investigated the performance of CFS stud walls under one-sided fire exposure, the investigation on double-sided fire exposure remains limited, especially for built-up studs. This study investigates the performance of CFS stud walls under compression loading, subjected to one-sided and double-sided fire exposure. Numerical models were developed using ANSYS APDL, considering geometric imperfections, material nonlinearities and contact element effect. The developed models were validated against previous experimental and numerical re- sults. Various parameters were analysed through parametric study, including steel thickness and grades, web stiffeners and I-shaped stud configurations. The results demonstrate the significant impact of the double-sided fire exposure on CFS walls performance, reducing the fire resistance by 41 % and 50 % for CFS thicknesses of 1.15 mm and 1.5 mm, respectively, compared to one-sided fire exposure. Steel grade and I-shaped configurations were found to significantly enhance the load-bearing capacity and fire resistance of CFS walls. The maximum temperatures predicted for each load ratio were used to calculate the load ratio as per EN1993–1–2. New for- mulas, based on load ratio were proposed to predict the maximum temperature at failure for CFS walls subjected to one-sided and double-sided fire exposure. The findings will improve fire structural design codes of CFS walls, by ensuring accurate predictions of limiting temperatures and fire resistance and providing engineers with substantial data for LSF structures.eng
dc.identifier.citationKada, Abdelhak; Kada, Abdelhak; Menadi, Belkacem; Lamri, Belkacem; Yessad, Ouissam; Piloto, P.A.G.; Jiang, Liming (2025). Performance of single and built-up I-shaped cold formed steel stud under double sided walls fire exposure. Engineering Structures. ISSN 0141-0296. 335, p. 1-18
dc.identifier.doi10.1016/j.engstruct.2025.120392
dc.identifier.issn0141-0296
dc.identifier.urihttp://hdl.handle.net/10198/34635
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relation.ispartofEngineering Structures
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectLight gauge steel frame (LSF) walls
dc.subjectCold formed steel (CFS)
dc.subjectWeb stiffeners
dc.subjectBuilt-up I-shaped
dc.subjectNumerical modelling
dc.subjectFire resistance
dc.titlePerformance of single and built-up I-shaped cold formed steel stud under double sided walls fire exposureeng
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage18
oaire.citation.startPage1
oaire.citation.titleEngineering Structures
oaire.citation.volume335
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNamePiloto
person.givenNamePaulo A.G.
person.identifier.ciencia-id0519-449D-6F13
person.identifier.orcid0000-0003-2834-0501
person.identifier.ridB-4866-2008
person.identifier.scopus-author-id6506406159
relation.isAuthorOfPublicationbaaee084-ab97-4c95-b636-24ab6bab0e3e
relation.isAuthorOfPublication.latestForDiscoverybaaee084-ab97-4c95-b636-24ab6bab0e3e

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