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Lateral-torsional buckling of high strength steel beams: experimental resistance

2021-07Journal article Restricted access
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dc.contributor.authorTankova, Trayana
dc.contributor.authorRodrigues, Filipe
dc.contributor.authorLeitao, Carlos
dc.contributor.authorMartins, Cláudio
dc.contributor.authorSilva, Luis Alberto Proença Simões da
dc.date.accessioned2021-07-27T09:23:13Z
dc.date.available2021-07-27T09:23:13Z
dc.date.issued2021-07
dc.description.abstractEN 1993-1-1 gives stability design rules for columns, beams and beam & ndash;columns up to S460, whereas EN 19931-12 gives additional guidance for S500 up to S700. Recent studies show that high strength steel members may be designed using improved buckling curves, where the enhanced behaviour is usually attributed to the improved material properties but mainly due to the more favourable residual stress distribution. The behaviour of unrestrained beams in HSS has not been widely studied. At present in EN 1993-1-1, the design rules for lateral-torsional buckling of beams are not dependent on the steel grade, meaning that the code does not distinguish between beams in conventional strength steel or HSS. In pursuit of an answer to the mentioned shortcomings, the present research is based on the experimental programme covering 12 full-scale tests, residual stress measurements, advanced numerical models and analytical derivations. The experiments cover different steel grades up to S690, welded and hot-rolled sections, homogeneous and hybrid (flanges in HSS and web in mild steel), double and mono-symmetric sections as well as variations in the cross-section class. This paper provides an overview of the experimental programme, discusses the results for lateral-torsional buckling of beams, and presents an advanced numerical model that was calibrated to the experimental results including the measured residual stress distribution and geometrical properties of the members. The numerical model was explored to assess various assumptions for the member imperfections, and these are further compared with code recommendations.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationTANKOVA, Trayana; [et al] – Lateral-torsional buckling of high strength steel beams: experimental resistance. Thin-Walled Structures. ISSN 0263-8231. Vol. 164 (2021), pp. 1-19pt_PT
dc.identifier.doi10.1016/j.tws.2021.107913pt_PT
dc.identifier.eissn1879-3223
dc.identifier.issn0263-8231
dc.identifier.urihttp://hdl.handle.net/10400.21/13581
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationPOCI-01-0145-FEDER-007633 - FCTpt_PT
dc.relationUIDB/04029/2020 - FCT/MCTES through national funds (PIDDAC) under the R&D Unit Institute for Sustainability and Innovation in Structural Engineering (ISISE)pt_PT
dc.relation743504 (STROBE) - Research Fund for Coal and Steelpt_PT
dc.relation.publisherversionhttps://reader.elsevier.com/reader/sd/pii/S0263823121002950?token=25C5435B8DDF34B69EC562E178044B8465B4F376B205D0A49BC9FE8FFC120CA1B2F4DF61CFA37A1AE007837E091102E6&originRegion=eu-west-1&originCreation=20210727090008pt_PT
dc.subjectLateral-torsional bucklingpt_PT
dc.subjectHigh Strength Steelpt_PT
dc.subjectExperimental testspt_PT
dc.subjectEurocode 3pt_PT
dc.subjectStabilitypt_PT
dc.titleLateral-torsional buckling of high strength steel beams: experimental resistancept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage19pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleThin-Walled Structurespt_PT
oaire.citation.volume164pt_PT
person.familyNameTankova
person.familyNameLeitao
person.familyNameSimoes da Silva
person.givenNameTrayana
person.givenNameCarlos
person.givenNameLuis
person.identifierM-1638-2014
person.identifier887124
person.identifier.ciencia-id331F-9FF9-F09C
person.identifier.ciencia-id9E17-DA8F-CC8A
person.identifier.ciencia-id1B11-765A-4434
person.identifier.orcid0000-0002-2764-0177
person.identifier.orcid0000-0003-0181-7146
person.identifier.orcid0000-0001-5225-6567
person.identifier.ridF-1485-2010
person.identifier.scopus-author-id56403032400
person.identifier.scopus-author-id24331810700
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication8c4ea166-8c3a-4b7a-a11d-de74a2677264
relation.isAuthorOfPublicationd2d5d0b7-83dc-455c-bba5-994a1d97c089
relation.isAuthorOfPublication.latestForDiscoveryd2d5d0b7-83dc-455c-bba5-994a1d97c089

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