Probabilistic analysis of slab-column connections subjected to punching shear according to the ABNT NBR 6118 (2014) recommendations considering the model error measure
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | |
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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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 |
|
_version_ |
1808129574254411776 |