Post-fire behavior of RC columns repaired with square hollow section steel tube and RC concrete jackets

Detalhes bibliográficos
Autor(a) principal: Belakhdar, Ahmed Rafik
Data de Publicação: 2023
Outros Autores: Dimia, Mohamed Salah, Baghdadi, Mohamed
Tipo de documento: Artigo
Idioma: eng
Título da fonte: The Journal of Engineering and Exact Sciences
Texto Completo: https://periodicos.ufv.br/jcec/article/view/16145
Resumo: This paper investigates numerically fire-exposed reinforced concrete (RC) columns. As a first step, the study examined the effects of exposing the columns to fire for 60 minutes according to the ISO 834 fire standard on the column's residual load-bearing capacity by considering some decisive geometrical parameters such as the column height and its cross-sectional area. The second step consisted of investigating the effectiveness of the strengthening technique utilized by incorporating composite jackets, considering different strengths of concrete, in order to improve the post-fire behavior of these columns. The results showed that the longer the column is exposed to fire, the lower its bearing capacity. However, it was also found that increasing the column cross-sectional area can reduce the percentage of load-bearing capacity. Finally, it was revealed that the strengthening method used herein allowed restoring the capacity of the columns exposed to fire for a period of one hour by up to 180%.  
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spelling Post-fire behavior of RC columns repaired with square hollow section steel tube and RC concrete jacketsComportamiento post-incendio de columnas CR reforzadas con tubo de acero de sección hueca cuadrada y camisas de concreto RCReinforced concrete columnFire damagePost-fire strengtheningComposite jacketColumna de hormigón armado; Daño por fuego; Fortalecimiento post-incendio; chaqueta compuesta.This paper investigates numerically fire-exposed reinforced concrete (RC) columns. As a first step, the study examined the effects of exposing the columns to fire for 60 minutes according to the ISO 834 fire standard on the column's residual load-bearing capacity by considering some decisive geometrical parameters such as the column height and its cross-sectional area. The second step consisted of investigating the effectiveness of the strengthening technique utilized by incorporating composite jackets, considering different strengths of concrete, in order to improve the post-fire behavior of these columns. The results showed that the longer the column is exposed to fire, the lower its bearing capacity. However, it was also found that increasing the column cross-sectional area can reduce the percentage of load-bearing capacity. Finally, it was revealed that the strengthening method used herein allowed restoring the capacity of the columns exposed to fire for a period of one hour by up to 180%.  Este artículo investiga columnas de hormigón armado (RC) expuestas numéricamente al fuego. Como primer paso, el estudio examinó los efectos de exponer las columnas al fuego durante 60 minutos del estándar ISO 834 sobre la capacidad de carga residual de la columna considerando algunos parámetros geométricos decisivos como la altura de la columna y su área de sección transversal. El segundo paso consistió en investigar la efectividad de la técnica de reforzamiento utilizada mediante la incorporación de jackets compuestas, considerando diferentes resistencias del hormigón, con el fin de mejorar el comportamiento post-incendio de estas columnas. Los resultados mostraron que cuanto más tiempo está expuesta la columna al fuego, menor es su capacidad portante. Sin embargo, también se encontró que aumentar el área de la sección transversal de la columna puede reducir el porcentaje de capacidad de carga. Finalmente, se reveló que el método de refuerzo aquí utilizado permitió restaurar la capacidad de las columnas expuestas al fuego por un período de una hora hasta en un 180%.  Cet article étudie numériquement les poteaux en béton armé (RC) exposés au feu. Dans un premier temps, l'étude a examiné les effets d'une exposition des poteaux au feu pendant 60 minutes selon la norme incendie ISO 834 sur la capacité portante résiduelle du poteau en considérant certains paramètres géométriques décisifs tels que la hauteur du poteau et sa section transversale. zone. La deuxième étape a consisté à étudier l'efficacité de la technique de renforcement utilisée en incorporant des chemises composites, en considérant différentes résistances de béton, afin d'améliorer le comportement après feu de ces colonnes. Les résultats ont montré que plus la colonne est exposée au feu longtemps, plus sa capacité portante est faible. Cependant, il a également été constaté que l'augmentation de la section transversale de la colonne peut réduire le pourcentage de capacité portante. Enfin, il a été révélé que la méthode de renforcement utilisée ici permettait de restaurer jusqu'à 180 % la capacité des colonnes exposées au feu pendant une durée d'une heure.  Universidade Federal de Viçosa - UFV2023-07-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufv.br/jcec/article/view/1614510.18540/jcecvl9iss6pp161456-01eThe Journal of Engineering and Exact Sciences; Vol. 9 No. 6 (2023); 161456-01eThe Journal of Engineering and Exact Sciences; Vol. 9 Núm. 6 (2023); 161456-01eThe Journal of Engineering and Exact Sciences; v. 9 n. 6 (2023); 161456-01e2527-1075reponame:The Journal of Engineering and Exact Sciencesinstname:Universidade Federal de Viçosa (UFV)instacron:UFVenghttps://periodicos.ufv.br/jcec/article/view/16145/8064Copyright (c) 2023 The Journal of Engineering and Exact Scienceshttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessBelakhdar, Ahmed RafikDimia, Mohamed SalahBaghdadi, Mohamed2024-03-26T17:21:54Zoai:ojs.periodicos.ufv.br:article/16145Revistahttp://www.seer.ufv.br/seer/rbeq2/index.php/req2/oai2527-10752527-1075opendoar:2024-03-26T17:21:54The Journal of Engineering and Exact Sciences - Universidade Federal de Viçosa (UFV)false
dc.title.none.fl_str_mv Post-fire behavior of RC columns repaired with square hollow section steel tube and RC concrete jackets
Comportamiento post-incendio de columnas CR reforzadas con tubo de acero de sección hueca cuadrada y camisas de concreto RC
title Post-fire behavior of RC columns repaired with square hollow section steel tube and RC concrete jackets
spellingShingle Post-fire behavior of RC columns repaired with square hollow section steel tube and RC concrete jackets
Belakhdar, Ahmed Rafik
Reinforced concrete column
Fire damage
Post-fire strengthening
Composite jacket
Columna de hormigón armado; Daño por fuego; Fortalecimiento post-incendio; chaqueta compuesta.
title_short Post-fire behavior of RC columns repaired with square hollow section steel tube and RC concrete jackets
title_full Post-fire behavior of RC columns repaired with square hollow section steel tube and RC concrete jackets
title_fullStr Post-fire behavior of RC columns repaired with square hollow section steel tube and RC concrete jackets
title_full_unstemmed Post-fire behavior of RC columns repaired with square hollow section steel tube and RC concrete jackets
title_sort Post-fire behavior of RC columns repaired with square hollow section steel tube and RC concrete jackets
author Belakhdar, Ahmed Rafik
author_facet Belakhdar, Ahmed Rafik
Dimia, Mohamed Salah
Baghdadi, Mohamed
author_role author
author2 Dimia, Mohamed Salah
Baghdadi, Mohamed
author2_role author
author
dc.contributor.author.fl_str_mv Belakhdar, Ahmed Rafik
Dimia, Mohamed Salah
Baghdadi, Mohamed
dc.subject.por.fl_str_mv Reinforced concrete column
Fire damage
Post-fire strengthening
Composite jacket
Columna de hormigón armado; Daño por fuego; Fortalecimiento post-incendio; chaqueta compuesta.
topic Reinforced concrete column
Fire damage
Post-fire strengthening
Composite jacket
Columna de hormigón armado; Daño por fuego; Fortalecimiento post-incendio; chaqueta compuesta.
description This paper investigates numerically fire-exposed reinforced concrete (RC) columns. As a first step, the study examined the effects of exposing the columns to fire for 60 minutes according to the ISO 834 fire standard on the column's residual load-bearing capacity by considering some decisive geometrical parameters such as the column height and its cross-sectional area. The second step consisted of investigating the effectiveness of the strengthening technique utilized by incorporating composite jackets, considering different strengths of concrete, in order to improve the post-fire behavior of these columns. The results showed that the longer the column is exposed to fire, the lower its bearing capacity. However, it was also found that increasing the column cross-sectional area can reduce the percentage of load-bearing capacity. Finally, it was revealed that the strengthening method used herein allowed restoring the capacity of the columns exposed to fire for a period of one hour by up to 180%.  
publishDate 2023
dc.date.none.fl_str_mv 2023-07-20
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://periodicos.ufv.br/jcec/article/view/16145
10.18540/jcecvl9iss6pp161456-01e
url https://periodicos.ufv.br/jcec/article/view/16145
identifier_str_mv 10.18540/jcecvl9iss6pp161456-01e
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://periodicos.ufv.br/jcec/article/view/16145/8064
dc.rights.driver.fl_str_mv Copyright (c) 2023 The Journal of Engineering and Exact Sciences
https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2023 The Journal of Engineering and Exact Sciences
https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Viçosa - UFV
publisher.none.fl_str_mv Universidade Federal de Viçosa - UFV
dc.source.none.fl_str_mv The Journal of Engineering and Exact Sciences; Vol. 9 No. 6 (2023); 161456-01e
The Journal of Engineering and Exact Sciences; Vol. 9 Núm. 6 (2023); 161456-01e
The Journal of Engineering and Exact Sciences; v. 9 n. 6 (2023); 161456-01e
2527-1075
reponame:The Journal of Engineering and Exact Sciences
instname:Universidade Federal de Viçosa (UFV)
instacron:UFV
instname_str Universidade Federal de Viçosa (UFV)
instacron_str UFV
institution UFV
reponame_str The Journal of Engineering and Exact Sciences
collection The Journal of Engineering and Exact Sciences
repository.name.fl_str_mv The Journal of Engineering and Exact Sciences - Universidade Federal de Viçosa (UFV)
repository.mail.fl_str_mv
_version_ 1798313316749148160

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