Probabilistic analysis of slab-column connections subjected to punching shear according to the ABNT NBR 6118 (2014) recommendations considering the model error measure

Detalhes bibliográficos
Autor(a) principal: Marque, Náyra Louise Alonso [UNESP]
Data de Publicação: 2021
Outros Autores: Nogueira, Caio Gorla [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/S1983-41952021000600009
http://hdl.handle.net/11449/212145
Resumo: Reinforced concrete flat slabs are structural systems in which slabs are directly supported by columns, without the use of beams. A structural phenomenon that deserves attention in these systems is the punching shear, characterized by the occurrence of shear stresses close to the slab-column interface, which can produce fragile rupture in those regions. This study presents some results of reliability index β obtained for slab-column connections based on FORM, according to the Brazilian standard’s model, considering the model error. The critical contours C and C’ without shear reinforcement are analyzed. The results showed that failure in the C contour is very unlikely, while the probabilities of rupture in the C' contour when considering the influence of the model error are greater than the target values recommended in the literature for the ULS.
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spelling Probabilistic analysis of slab-column connections subjected to punching shear according to the ABNT NBR 6118 (2014) recommendations considering the model error measureAnálise probabilística de ligações laje-pilar submetidas à punção segundo as recomendações da ABNT NBR 6118 (2014) considerando a medida do erro de modeloslab-column connectionpunching shearreliabilityreinforced concreteligação laje-pilarpunçãoconfiabilidadeconcreto armadoReinforced concrete flat slabs are structural systems in which slabs are directly supported by columns, without the use of beams. A structural phenomenon that deserves attention in these systems is the punching shear, characterized by the occurrence of shear stresses close to the slab-column interface, which can produce fragile rupture in those regions. This study presents some results of reliability index β obtained for slab-column connections based on FORM, according to the Brazilian standard’s model, considering the model error. The critical contours C and C’ without shear reinforcement are analyzed. The results showed that failure in the C contour is very unlikely, while the probabilities of rupture in the C' contour when considering the influence of the model error are greater than the target values recommended in the literature for the ULS.Lajes lisas de concreto armado são sistemas estruturais compostos por lajes diretamente apoiadas em pilares, sem o uso de vigas. Um fenômeno estrutural que merece atenção nesses sistemas é a punção, caracterizada pela ocorrência de tensões de cisalhamento nas proximidades da interface laje-pilar, que podem produzir ruptura frágil nessas regiões. Este estudo apresenta resultados do índice de confiabilidade β obtidos para ligações laje-pilar a partir de análises de confiabilidade utilizando o FORM, segundo o modelo da norma brasileira, considerando o erro de modelo. Os contornos críticos C e C’ sem armadura de punção são analisados. Os resultados mostraram que a falha no contorno C é muito improvável, enquanto que as probabilidades de ruptura no contorno C’ quando se considera a influência do erro de modelo são maiores que valores alvo recomendados na literatura para o ELU.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Universidade Estadual Paulista, Departamento de Engenharia Civil e AmbientalUniversidade Estadual Paulista, Departamento de Engenharia Civil e AmbientalFAPESP: 2018/06562-4IBRACON - Instituto Brasileiro do ConcretoUniversidade Estadual Paulista (Unesp)Marque, Náyra Louise Alonso [UNESP]Nogueira, Caio Gorla [UNESP]2021-07-14T10:35:21Z2021-07-14T10:35:21Z2021-07-05info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article-application/pdfhttp://dx.doi.org/10.1590/S1983-41952021000600009Revista IBRACON de Estruturas e Materiais. IBRACON - Instituto Brasileiro do Concreto, v. 14, n. 6, p. -, 2021.1983-4195http://hdl.handle.net/11449/21214510.1590/S1983-41952021000600009S1983-41952021000600208S1983-41952021000600208.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista IBRACON de Estruturas e Materiaisinfo:eu-repo/semantics/openAccess2024-01-26T06:32:11Zoai:repositorio.unesp.br:11449/212145Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-06T00:01:47.802347Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Probabilistic analysis of slab-column connections subjected to punching shear according to the ABNT NBR 6118 (2014) recommendations considering the model error measure
Análise probabilística de ligações laje-pilar submetidas à punção segundo as recomendações da ABNT NBR 6118 (2014) considerando a medida do erro de modelo
title Probabilistic analysis of slab-column connections subjected to punching shear according to the ABNT NBR 6118 (2014) recommendations considering the model error measure
spellingShingle Probabilistic analysis of slab-column connections subjected to punching shear according to the ABNT NBR 6118 (2014) recommendations considering the model error measure
Marque, Náyra Louise Alonso [UNESP]
slab-column connection
punching shear
reliability
reinforced concrete
ligação laje-pilar
punção
confiabilidade
concreto armado
title_short Probabilistic analysis of slab-column connections subjected to punching shear according to the ABNT NBR 6118 (2014) recommendations considering the model error measure
title_full Probabilistic analysis of slab-column connections subjected to punching shear according to the ABNT NBR 6118 (2014) recommendations considering the model error measure
title_fullStr Probabilistic analysis of slab-column connections subjected to punching shear according to the ABNT NBR 6118 (2014) recommendations considering the model error measure
title_full_unstemmed Probabilistic analysis of slab-column connections subjected to punching shear according to the ABNT NBR 6118 (2014) recommendations considering the model error measure
title_sort Probabilistic analysis of slab-column connections subjected to punching shear according to the ABNT NBR 6118 (2014) recommendations considering the model error measure
author Marque, Náyra Louise Alonso [UNESP]
author_facet Marque, Náyra Louise Alonso [UNESP]
Nogueira, Caio Gorla [UNESP]
author_role author
author2 Nogueira, Caio Gorla [UNESP]
author2_role author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Marque, Náyra Louise Alonso [UNESP]
Nogueira, Caio Gorla [UNESP]
dc.subject.por.fl_str_mv slab-column connection
punching shear
reliability
reinforced concrete
ligação laje-pilar
punção
confiabilidade
concreto armado
topic slab-column connection
punching shear
reliability
reinforced concrete
ligação laje-pilar
punção
confiabilidade
concreto armado
description Reinforced concrete flat slabs are structural systems in which slabs are directly supported by columns, without the use of beams. A structural phenomenon that deserves attention in these systems is the punching shear, characterized by the occurrence of shear stresses close to the slab-column interface, which can produce fragile rupture in those regions. This study presents some results of reliability index β obtained for slab-column connections based on FORM, according to the Brazilian standard’s model, considering the model error. The critical contours C and C’ without shear reinforcement are analyzed. The results showed that failure in the C contour is very unlikely, while the probabilities of rupture in the C' contour when considering the influence of the model error are greater than the target values recommended in the literature for the ULS.
publishDate 2021
dc.date.none.fl_str_mv 2021-07-14T10:35:21Z
2021-07-14T10:35:21Z
2021-07-05
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://dx.doi.org/10.1590/S1983-41952021000600009
Revista IBRACON de Estruturas e Materiais. IBRACON - Instituto Brasileiro do Concreto, v. 14, n. 6, p. -, 2021.
1983-4195
http://hdl.handle.net/11449/212145
10.1590/S1983-41952021000600009
S1983-41952021000600208
S1983-41952021000600208.pdf
url http://dx.doi.org/10.1590/S1983-41952021000600009
http://hdl.handle.net/11449/212145
identifier_str_mv Revista IBRACON de Estruturas e Materiais. IBRACON - Instituto Brasileiro do Concreto, v. 14, n. 6, p. -, 2021.
1983-4195
10.1590/S1983-41952021000600009
S1983-41952021000600208
S1983-41952021000600208.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Revista IBRACON de Estruturas e Materiais
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.publisher.none.fl_str_mv IBRACON - Instituto Brasileiro do Concreto
publisher.none.fl_str_mv IBRACON - Instituto Brasileiro do Concreto
dc.source.none.fl_str_mv SciELO
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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