Experimental bending tests of partially encased beams at elevated temperatures
Autor(a) principal: | |
---|---|
Data de Publicação: | 2017 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10198/15410 |
Resumo: | This paper presents the result of an experimental research about the lateral torsional buckling instability during bending tests of Partially Encased Beams (PEB) at elevated temperature. A set of twenty seven four-point bending tests, grouped in ten series, were carried out to analyse the influence of relative slenderness, beam temperature and the shear bond conditions between concrete and steel in bending. In addition, this study compares the behaviour of PEB and bare steel beam under bending at room temperature. PEB specimens are based on IPE100 steel profiles, with two different lengths 2.4 m (medium series) and 3.9 m (large series), tested in bending using simple supporting conditions and exposed to different temperatures levels of 200 °C, 400 °C, and 600 °C. Two different shear bond conditions, between steel profile and lateral concrete, were analysed at 400 °C: one series with connectors formed by welded stirrups to the web and another series with natural adherence between steel and concrete, not welded stirrups. PEB attained lateral torsional buckling as deformed failure mode at the ultimate limit state, except for the case of PEB tested at 600 °C that results in a plastic hinge failure. The bending resistance was determined for the maximum load event (F u ) and for the displacement limit corresponding to L/30 (F L/30 ) and compared with the results of the Eurocode 3 part 1–2 simple calculation method, considering an adaptation of its formulae to PEB. The expected reduction in bending resistance at elevated temperature is in good agreement with the experimental reduction factor, when the deformation criterion is used. |
id |
RCAP_880b33abe9475488ddba0a429ec0d083 |
---|---|
oai_identifier_str |
oai:bibliotecadigital.ipb.pt:10198/15410 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Experimental bending tests of partially encased beams at elevated temperaturesBending resistanceComposite steel and concreteElevated temperatureExperimental testsLateral torsional bucklingPartially encased beamsThis paper presents the result of an experimental research about the lateral torsional buckling instability during bending tests of Partially Encased Beams (PEB) at elevated temperature. A set of twenty seven four-point bending tests, grouped in ten series, were carried out to analyse the influence of relative slenderness, beam temperature and the shear bond conditions between concrete and steel in bending. In addition, this study compares the behaviour of PEB and bare steel beam under bending at room temperature. PEB specimens are based on IPE100 steel profiles, with two different lengths 2.4 m (medium series) and 3.9 m (large series), tested in bending using simple supporting conditions and exposed to different temperatures levels of 200 °C, 400 °C, and 600 °C. Two different shear bond conditions, between steel profile and lateral concrete, were analysed at 400 °C: one series with connectors formed by welded stirrups to the web and another series with natural adherence between steel and concrete, not welded stirrups. PEB attained lateral torsional buckling as deformed failure mode at the ultimate limit state, except for the case of PEB tested at 600 °C that results in a plastic hinge failure. The bending resistance was determined for the maximum load event (F u ) and for the displacement limit corresponding to L/30 (F L/30 ) and compared with the results of the Eurocode 3 part 1–2 simple calculation method, considering an adaptation of its formulae to PEB. The expected reduction in bending resistance at elevated temperature is in good agreement with the experimental reduction factor, when the deformation criterion is used.Authors acknowledge material support to the following companies and institutions: Arcelor – Mittal (Spain), J. Soares Correia (Portugal), Fepronor (Portugal), Hierros Furquet (Spain) and D. Samuel Solorzano Barruso Memorial Foundation-University of Salamanca (Spain).Biblioteca Digital do IPBPiloto, P.A.G.Ramos Gavilán, Ana BelénGonçalves, CarlosMesquita, L.M.R.2018-01-31T10:00:00Z20172017-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10198/15410engPiloto, Paulo A.G.; Ramos-Gavilán, Ana B.; Gonçalves, Carlos; Mesquita, Luís M.R. (2017). Experimental bending tests of partially encased beams at elevated temperatures. Fire Safety Journal. ISSN 0379-7112. 92, p. 23-410379-711210.1016/j.firesaf.2017.05.014info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-21T10:36:00Zoai:bibliotecadigital.ipb.pt:10198/15410Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T23:05:00.478075Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Experimental bending tests of partially encased beams at elevated temperatures |
title |
Experimental bending tests of partially encased beams at elevated temperatures |
spellingShingle |
Experimental bending tests of partially encased beams at elevated temperatures Piloto, P.A.G. Bending resistance Composite steel and concrete Elevated temperature Experimental tests Lateral torsional buckling Partially encased beams |
title_short |
Experimental bending tests of partially encased beams at elevated temperatures |
title_full |
Experimental bending tests of partially encased beams at elevated temperatures |
title_fullStr |
Experimental bending tests of partially encased beams at elevated temperatures |
title_full_unstemmed |
Experimental bending tests of partially encased beams at elevated temperatures |
title_sort |
Experimental bending tests of partially encased beams at elevated temperatures |
author |
Piloto, P.A.G. |
author_facet |
Piloto, P.A.G. Ramos Gavilán, Ana Belén Gonçalves, Carlos Mesquita, L.M.R. |
author_role |
author |
author2 |
Ramos Gavilán, Ana Belén Gonçalves, Carlos Mesquita, L.M.R. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Biblioteca Digital do IPB |
dc.contributor.author.fl_str_mv |
Piloto, P.A.G. Ramos Gavilán, Ana Belén Gonçalves, Carlos Mesquita, L.M.R. |
dc.subject.por.fl_str_mv |
Bending resistance Composite steel and concrete Elevated temperature Experimental tests Lateral torsional buckling Partially encased beams |
topic |
Bending resistance Composite steel and concrete Elevated temperature Experimental tests Lateral torsional buckling Partially encased beams |
description |
This paper presents the result of an experimental research about the lateral torsional buckling instability during bending tests of Partially Encased Beams (PEB) at elevated temperature. A set of twenty seven four-point bending tests, grouped in ten series, were carried out to analyse the influence of relative slenderness, beam temperature and the shear bond conditions between concrete and steel in bending. In addition, this study compares the behaviour of PEB and bare steel beam under bending at room temperature. PEB specimens are based on IPE100 steel profiles, with two different lengths 2.4 m (medium series) and 3.9 m (large series), tested in bending using simple supporting conditions and exposed to different temperatures levels of 200 °C, 400 °C, and 600 °C. Two different shear bond conditions, between steel profile and lateral concrete, were analysed at 400 °C: one series with connectors formed by welded stirrups to the web and another series with natural adherence between steel and concrete, not welded stirrups. PEB attained lateral torsional buckling as deformed failure mode at the ultimate limit state, except for the case of PEB tested at 600 °C that results in a plastic hinge failure. The bending resistance was determined for the maximum load event (F u ) and for the displacement limit corresponding to L/30 (F L/30 ) and compared with the results of the Eurocode 3 part 1–2 simple calculation method, considering an adaptation of its formulae to PEB. The expected reduction in bending resistance at elevated temperature is in good agreement with the experimental reduction factor, when the deformation criterion is used. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017 2017-01-01T00:00:00Z 2018-01-31T10:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10198/15410 |
url |
http://hdl.handle.net/10198/15410 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Piloto, Paulo A.G.; Ramos-Gavilán, Ana B.; Gonçalves, Carlos; Mesquita, Luís M.R. (2017). Experimental bending tests of partially encased beams at elevated temperatures. Fire Safety Journal. ISSN 0379-7112. 92, p. 23-41 0379-7112 10.1016/j.firesaf.2017.05.014 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
_version_ |
1799135298370666496 |