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Finite-element analysis for the performance of steel frames under fire after earthquake

2023Journal article Restricted access
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dc.contributor.authorMerouani, Mohammed Redha
dc.contributor.authorKada, Abdelhak
dc.contributor.authorLamri, Belkacem
dc.contributor.authorPiloto, P.A.G.
dc.date.accessioned2023-03-07T10:02:20Z
dc.date.available2023-03-07T10:02:20Z
dc.date.issued2023
dc.description.abstractRecent events of fire after an earthquake (FAE) show that this is a frequent dual event leading to a significant loss which can only be reduced by increasing the level of safety. This paper presents numerical models developed for FAE analyses on 24 steel portal frames to investigate their behaviour and estimate the performance in terms of ratios with regard to horizontal displacement, fire resistance time, and critical temperature. In this study, validated numerical models are used for a parametric study to explore the effect of number of bays and stories on the performance of steel frames under two fire scenarios. Frames with one bay and one story are designed with the Algerian seismic code, RPA99v2003, considering the seismic region of Chlef and other frames are checked with Eurocode for the ultimate limit state. All frames subjected to the seismic and the ISO834 fire actions are simulated within a single software, ANSYS, for pushover and thermo-mechanical analyses. The performance is evaluated, by FAE analysis for damaged frames remaining in the plastic state and undamaged frames not reaching the plastic state, and compared to those subjected to fire without earthquake (FWoE). The frames under FAE are more vulnerable to fire and increasing damage is produced and hence reducing their structural performance. The results also show that the higher the number of bays is, the higher the performance of the frames. The critical temperature of beams decreases with the beam length. The frames with FAE, under inelastic conditions, have smaller fire resistance, when compared to undamaged frames.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMerouani, Mohammed Redha; Kada, Abdelhak; Lamri, Belkacem; Piloto, P.A.G. (2023). Finite-element analysis for the performance of steel frames under fire after earthquake. Asian Journal of Civil Engineering. ISSN 15630854. 24:2, p. 593-606pt_PT
dc.identifier.doi10.1007/s42107-022-00520-1pt_PT
dc.identifier.issn15630854
dc.identifier.urihttp://hdl.handle.net/10198/27502
dc.language.isoengpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectSteel framespt_PT
dc.subjectFinite elementpt_PT
dc.subjectRPA99v2003pt_PT
dc.subjectPushover analysispt_PT
dc.subjectThermomechanical analysispt_PT
dc.subjectSteel frames ·pt_PT
dc.subjectFinite elementpt_PT
dc.subjectFire after earthquakept_PT
dc.titleFinite-element analysis for the performance of steel frames under fire after earthquakept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage606pt_PT
oaire.citation.issue2pt_PT
oaire.citation.startPage593pt_PT
oaire.citation.titleAsian Journal of Civil Engineeringpt_PT
oaire.citation.volume24pt_PT
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
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationbaaee084-ab97-4c95-b636-24ab6bab0e3e
relation.isAuthorOfPublication.latestForDiscoverybaaee084-ab97-4c95-b636-24ab6bab0e3e

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