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Experimental investigation of cellular steel beams at ambient and elevated temperatures

2026Artigo científico Acesso aberto
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datacite.subject.fosEngenharia e Tecnologia::Engenharia Civil
datacite.subject.fosEngenharia e Tecnologia::Engenharia Mecânica
datacite.subject.fosEngenharia e Tecnologia::Engenharia dos Materiais
datacite.subject.fosEngenharia e Tecnologia::Outras Engenharias e Tecnologias
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
datacite.subject.sdg11:Cidades e Comunidades Sustentáveis
datacite.subject.sdg12:Produção e Consumo Sustentáveis
dc.contributor.authorSilva, Luana Vidoti da
dc.contributor.authorGiacomitti, Nickolas
dc.contributor.authorFerreira, Débora
dc.contributor.authorLopes, Nuno
dc.contributor.authorMesquita, Luís M.R.
dc.date.accessioned2025-12-12T11:52:53Z
dc.date.available2025-12-12T11:52:53Z
dc.date.issued2026
dc.description.abstractCellular steel beams, commonly used in modern construction, exhibit complex failure mechanisms that have not been thoroughly explored, especially under fire conditions. This research investigates the structural behaviour of cellular beams under both ambient and elevated temperatures, with a focus on load-bearing capacity and failure modes. Experimental tests were conducted on a solid beam and six cellular beams with varying hole spacings and diameters at different temperatures. All beams were tested under three-point bending, subjecting the openings and the web posts to different combinations of bending moments and shear forces. Experimental maximum loads and failure modes are compared with the design method of EN1993-1-13 and EN1993-1-2. At ambient temperature, failure modes varied with beam design: specimens with smaller opening spacings failed by web-post buckling, while larger openings resulted in a Vierendeel mechanism. While the Eurocode predictions for load capacity were conservative under ambient conditions, the design model did not accurately predict the correct failure mode. Elevated temperatures significantly reduced the load capacity and, in some cases, changed the collapse mechanism. These results highlight that current design rules are unreliable in predicting the failure mode and may not ensure safety at higher temperatures, stressing the need for specific design rules for cellular beams in fire conditions.eng
dc.description.sponsorshipNone.
dc.identifier.citationDa Silva, Luana V.; Giacomitti, Nickolas; Ferreira, Debora; Lopes, Nuno; Mesquita, Ludis M.R. (2025). Experimental investigation of cellular steel beams at ambient and elevated temperatures. Fire Safety Journal. ISSN 0379-7112. 159
dc.identifier.doi10.1016/j.firesaf.2025.104574
dc.identifier.issn0379-7112
dc.identifier.urihttp://hdl.handle.net/10198/35210
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier BV
dc.relation.ispartofFire Safety Journal
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.subjectCellular steel beams
dc.subjectElevated temperature
dc.subjectExperimental test
dc.subjectFire
dc.subjectWeb-post buckling
dc.subjectVierendeel mechanism
dc.titleExperimental investigation of cellular steel beams at ambient and elevated temperatureseng
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleFire Safety Journal
oaire.citation.volume159
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameSilva
person.familyNameFerreira
person.familyNameMesquita
person.givenNameLuana Vidoti da
person.givenNameDébora
person.givenNameLuís M.R.
person.identifier1339117
person.identifier.ciencia-id1A1B-A0C8-D39B
person.identifier.ciencia-idD81C-FDAD-4D8A
person.identifier.ciencia-id401E-2FEC-8303
person.identifier.orcid0000-0002-5195-8265
person.identifier.orcid0000-0002-2385-4282
person.identifier.ridF-2269-2010
person.identifier.scopus-author-id35334023200
person.identifier.scopus-author-id8585923500
relation.isAuthorOfPublication3a8957fc-f5cf-4a82-b7b8-0edee3584ef9
relation.isAuthorOfPublicationa4fa2eb4-17f1-46a1-ae8e-36f39ad25b39
relation.isAuthorOfPublication3d08baba-b032-42c4-8244-94672c4611a1
relation.isAuthorOfPublication.latestForDiscoverya4fa2eb4-17f1-46a1-ae8e-36f39ad25b39

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