Analysis of concrete-filled steel tubular columns after fire exposure

[EN] Concrete filled steel tubular (CFST) columns have a high probability to resist high temperatures compared to steel structures, whose evaluation after a fire is limited by the resulting deformation. A better understanding of the behaviour of CFST columns after a fire, affected by the maximum tem...

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Authors: Ibáñez, Carmen, Bisby, Luke, Rush, David, Hospitaler, Antonio, Romero, Manuel L.|||0000-0001-5247-4767
Format: book part
Publication Date:2018
Country:España
Institution:Universitat Politècnica de València (UPV)
Repository:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Language:English
OAI Identifier:oai:riunet.upv.es:10251/108060
Online Access:https://riunet.upv.es/handle/10251/108060
Access Level:Open access
Keyword:Post-fire response
Residual capacity
Fiber beam model
Concrete filled steel tubular columns
MECANICA DE LOS MEDIOS CONTINUOS Y TEORIA DE ESTRUCTURAS
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oai_identifier_str oai:riunet.upv.es:10251/108060
network_acronym_str ES
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repository_id_str
spelling Analysis of concrete-filled steel tubular columns after fire exposureIbáñez, CarmenBisby, LukeRush, DavidHospitaler, AntonioRomero, Manuel L.|||0000-0001-5247-4767Post-fire responseResidual capacityFiber beam modelConcrete filled steel tubular columnsMECANICA DE LOS MEDIOS CONTINUOS Y TEORIA DE ESTRUCTURAS[EN] Concrete filled steel tubular (CFST) columns have a high probability to resist high temperatures compared to steel structures, whose evaluation after a fire is limited by the resulting deformation. A better understanding of the behaviour of CFST columns after a fire, affected by the maximum temperature achieved by the concrete infill, is required to properly estimate their residual strength and stiffness in order to adopt a reasonable strategy with minimum post-fire repair. In this paper, a fiber beam model for the simulation of the post-fire response of slender concrete-filled steel tubular (CFST) columns is presented. First, the model is validated against experimental results and subsequently it is employed to analyse the post-fire response of circular CFST columns. The variation of the residual strength with the load level for realistic fire resistance times is numerically studied. Actually, in a building, the columns support load even while a fire is being extinguished, so it is important to take into account this loading condition when predicting the post-fire behaviour. Therefore, in this research, the complete analysis comprises three stages: heating, cooling and post-fire under sustained load conditions. The model considers realistic features typical from the fire response of CFST columns, such as the existence of a gap conductance at the steel-concrete interface or the sliding and separation between the steel tube and the concrete.The authors gratefully acknowledge the financial support given by Generalitat Valenciana (Spain) for providing the funding BEST/2017/141 for the first author's stay as a visiting fellow at the School of Engineering of the University of Edinburgh.Editorial Universitat Politècnica de ValènciaDepartamento de Mecánica de los Medios Continuos y Teoría de EstructurasEscuela Técnica Superior de Ingeniería IndustrialInstituto Universitario de Investigación de Ciencia y Tecnología del HormigónGeneralitat ValencianaRepositorio Institucional de la Universitat Politècnica de València Riunet20182018-06-05book parthttp://purl.org/coar/resource_type/c_3248VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/bookPartapplication/pdfhttps://riunet.upv.es/handle/10251/108060reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengGeneralitat Valenciana https://doi.org/10.13039/501100003359 BEST%2F2017%2F141open accesshttp://purl.org/coar/access_right/c_abf2Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/1080602026-06-13T07:49:27Z
dc.title.none.fl_str_mv Analysis of concrete-filled steel tubular columns after fire exposure
title Analysis of concrete-filled steel tubular columns after fire exposure
spellingShingle Analysis of concrete-filled steel tubular columns after fire exposure
Ibáñez, Carmen
Post-fire response
Residual capacity
Fiber beam model
Concrete filled steel tubular columns
MECANICA DE LOS MEDIOS CONTINUOS Y TEORIA DE ESTRUCTURAS
title_short Analysis of concrete-filled steel tubular columns after fire exposure
title_full Analysis of concrete-filled steel tubular columns after fire exposure
title_fullStr Analysis of concrete-filled steel tubular columns after fire exposure
title_full_unstemmed Analysis of concrete-filled steel tubular columns after fire exposure
title_sort Analysis of concrete-filled steel tubular columns after fire exposure
dc.creator.none.fl_str_mv Ibáñez, Carmen
Bisby, Luke
Rush, David
Hospitaler, Antonio
Romero, Manuel L.|||0000-0001-5247-4767
author Ibáñez, Carmen
author_facet Ibáñez, Carmen
Bisby, Luke
Rush, David
Hospitaler, Antonio
Romero, Manuel L.|||0000-0001-5247-4767
author_role author
author2 Bisby, Luke
Rush, David
Hospitaler, Antonio
Romero, Manuel L.|||0000-0001-5247-4767
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Departamento de Mecánica de los Medios Continuos y Teoría de Estructuras
Escuela Técnica Superior de Ingeniería Industrial
Instituto Universitario de Investigación de Ciencia y Tecnología del Hormigón
Generalitat Valenciana
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Post-fire response
Residual capacity
Fiber beam model
Concrete filled steel tubular columns
MECANICA DE LOS MEDIOS CONTINUOS Y TEORIA DE ESTRUCTURAS
topic Post-fire response
Residual capacity
Fiber beam model
Concrete filled steel tubular columns
MECANICA DE LOS MEDIOS CONTINUOS Y TEORIA DE ESTRUCTURAS
description [EN] Concrete filled steel tubular (CFST) columns have a high probability to resist high temperatures compared to steel structures, whose evaluation after a fire is limited by the resulting deformation. A better understanding of the behaviour of CFST columns after a fire, affected by the maximum temperature achieved by the concrete infill, is required to properly estimate their residual strength and stiffness in order to adopt a reasonable strategy with minimum post-fire repair. In this paper, a fiber beam model for the simulation of the post-fire response of slender concrete-filled steel tubular (CFST) columns is presented. First, the model is validated against experimental results and subsequently it is employed to analyse the post-fire response of circular CFST columns. The variation of the residual strength with the load level for realistic fire resistance times is numerically studied. Actually, in a building, the columns support load even while a fire is being extinguished, so it is important to take into account this loading condition when predicting the post-fire behaviour. Therefore, in this research, the complete analysis comprises three stages: heating, cooling and post-fire under sustained load conditions. The model considers realistic features typical from the fire response of CFST columns, such as the existence of a gap conductance at the steel-concrete interface or the sliding and separation between the steel tube and the concrete.
publishDate 2018
dc.date.none.fl_str_mv 2018
2018-06-05
dc.type.none.fl_str_mv book part
http://purl.org/coar/resource_type/c_3248
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/bookPart
format bookPart
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/108060
url https://riunet.upv.es/handle/10251/108060
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Generalitat Valenciana https://doi.org/10.13039/501100003359 BEST%2F2017%2F141
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Editorial Universitat Politècnica de València
publisher.none.fl_str_mv Editorial Universitat Politècnica de València
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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