Fire response of a 3D multi-storey building with buckling restrained braces
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Latin American journal of solids and structures (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252015001102118 |
Resumo: | Abstract This paper investigates the performance of a three-dimensional multi-storey structure with Buckling Restrained Brace system (BRBs) under fire condition, using a sequentially coupled nonlinear thermal stress analysis. Efficiency of using BRBs in enhancing the strength and stiffness of a structural frame is compared with that of Ordinary Concentrically Bracing system (OCBs) under various fire scenarios. The proposed numerical model is verified by a series of full-scale fire tests carried out on an 8-storey structure at Cardington. The results indicate that the vertical movement of heated (buckled) column in the structural frame with BRBs is lesser than that with OCBs. Consequently, the tensile force and bending moment of the beam adjacent to the buckled column in the former is lesser than the latter. Also, BRB elements can perform better in redistributing the load sustained by heated columns without any buckling occurrence in the bracing member, in comparisons to the ordinary system. In general, it is observed that BRBs manifest an improved performance in re-stabilization of structural frame against fire for a longer period of heating time, such that a better fire resistance is offered to the whole building as compared to OCBs, due to a higher restraint provided onto the structure. |
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Latin American journal of solids and structures (Online) |
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Fire response of a 3D multi-storey building with buckling restrained bracesBuckling Restrained Brace system (BRBs)Ordinary Concentrically Brace system (OCB)3D multi-storey steel structuresfire resistanceAbstract This paper investigates the performance of a three-dimensional multi-storey structure with Buckling Restrained Brace system (BRBs) under fire condition, using a sequentially coupled nonlinear thermal stress analysis. Efficiency of using BRBs in enhancing the strength and stiffness of a structural frame is compared with that of Ordinary Concentrically Bracing system (OCBs) under various fire scenarios. The proposed numerical model is verified by a series of full-scale fire tests carried out on an 8-storey structure at Cardington. The results indicate that the vertical movement of heated (buckled) column in the structural frame with BRBs is lesser than that with OCBs. Consequently, the tensile force and bending moment of the beam adjacent to the buckled column in the former is lesser than the latter. Also, BRB elements can perform better in redistributing the load sustained by heated columns without any buckling occurrence in the bracing member, in comparisons to the ordinary system. In general, it is observed that BRBs manifest an improved performance in re-stabilization of structural frame against fire for a longer period of heating time, such that a better fire resistance is offered to the whole building as compared to OCBs, due to a higher restraint provided onto the structure.Associação Brasileira de Ciências Mecânicas2015-11-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252015001102118Latin American Journal of Solids and Structures v.12 n.11 2015reponame:Latin American journal of solids and structures (Online)instname:Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)instacron:ABCM10.1590/1679-78251786info:eu-repo/semantics/openAccessTalebi,ElnazTahir,Mahmood Md.Zahmatkesh,FarshadKueh,Ahmad B.H.eng2015-11-26T00:00:00Zoai:scielo:S1679-78252015001102118Revistahttp://www.scielo.br/scielo.php?script=sci_serial&pid=1679-7825&lng=pt&nrm=isohttps://old.scielo.br/oai/scielo-oai.phpabcm@abcm.org.br||maralves@usp.br1679-78251679-7817opendoar:2015-11-26T00:00Latin American journal of solids and structures (Online) - Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)false |
dc.title.none.fl_str_mv |
Fire response of a 3D multi-storey building with buckling restrained braces |
title |
Fire response of a 3D multi-storey building with buckling restrained braces |
spellingShingle |
Fire response of a 3D multi-storey building with buckling restrained braces Talebi,Elnaz Buckling Restrained Brace system (BRBs) Ordinary Concentrically Brace system (OCB) 3D multi-storey steel structures fire resistance |
title_short |
Fire response of a 3D multi-storey building with buckling restrained braces |
title_full |
Fire response of a 3D multi-storey building with buckling restrained braces |
title_fullStr |
Fire response of a 3D multi-storey building with buckling restrained braces |
title_full_unstemmed |
Fire response of a 3D multi-storey building with buckling restrained braces |
title_sort |
Fire response of a 3D multi-storey building with buckling restrained braces |
author |
Talebi,Elnaz |
author_facet |
Talebi,Elnaz Tahir,Mahmood Md. Zahmatkesh,Farshad Kueh,Ahmad B.H. |
author_role |
author |
author2 |
Tahir,Mahmood Md. Zahmatkesh,Farshad Kueh,Ahmad B.H. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Talebi,Elnaz Tahir,Mahmood Md. Zahmatkesh,Farshad Kueh,Ahmad B.H. |
dc.subject.por.fl_str_mv |
Buckling Restrained Brace system (BRBs) Ordinary Concentrically Brace system (OCB) 3D multi-storey steel structures fire resistance |
topic |
Buckling Restrained Brace system (BRBs) Ordinary Concentrically Brace system (OCB) 3D multi-storey steel structures fire resistance |
description |
Abstract This paper investigates the performance of a three-dimensional multi-storey structure with Buckling Restrained Brace system (BRBs) under fire condition, using a sequentially coupled nonlinear thermal stress analysis. Efficiency of using BRBs in enhancing the strength and stiffness of a structural frame is compared with that of Ordinary Concentrically Bracing system (OCBs) under various fire scenarios. The proposed numerical model is verified by a series of full-scale fire tests carried out on an 8-storey structure at Cardington. The results indicate that the vertical movement of heated (buckled) column in the structural frame with BRBs is lesser than that with OCBs. Consequently, the tensile force and bending moment of the beam adjacent to the buckled column in the former is lesser than the latter. Also, BRB elements can perform better in redistributing the load sustained by heated columns without any buckling occurrence in the bracing member, in comparisons to the ordinary system. In general, it is observed that BRBs manifest an improved performance in re-stabilization of structural frame against fire for a longer period of heating time, such that a better fire resistance is offered to the whole building as compared to OCBs, due to a higher restraint provided onto the structure. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-11-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252015001102118 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252015001102118 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1679-78251786 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Ciências Mecânicas |
publisher.none.fl_str_mv |
Associação Brasileira de Ciências Mecânicas |
dc.source.none.fl_str_mv |
Latin American Journal of Solids and Structures v.12 n.11 2015 reponame:Latin American journal of solids and structures (Online) instname:Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) instacron:ABCM |
instname_str |
Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) |
instacron_str |
ABCM |
institution |
ABCM |
reponame_str |
Latin American journal of solids and structures (Online) |
collection |
Latin American journal of solids and structures (Online) |
repository.name.fl_str_mv |
Latin American journal of solids and structures (Online) - Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) |
repository.mail.fl_str_mv |
abcm@abcm.org.br||maralves@usp.br |
_version_ |
1754302888095514624 |