Influence of reinforcement's corrosion into hyperstatic reinforced concrete beams: a probabilistic failure scenarios analysis
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1983-41952015000400004 http://hdl.handle.net/11449/158005 |
Resumo: | AbstractThis work aims to study the mechanical effects of reinforcement's corrosion in hyperstatic reinforced concrete beams. The focus is the probabilistic determination of individual failure scenarios change as well as global failure change along time. The limit state functions assumed describe analytically bending and shear resistance of reinforced concrete rectangular cross sections as a function of steel and concrete resistance and section dimensions. It was incorporated empirical laws that penalize the steel yield stress and the reinforcement's area along time in addition to Fick's law, which models the chloride penetration into concrete pores. The reliability theory was applied based on Monte Carlo simulation method, which assesses each individual probability of failure. The probability of global structural failure was determined based in the concept of failure tree. The results of a hyperstatic reinforced concrete beam showed that reinforcements corrosion make change into the failure scenarios modes. Therefore, unimportant failure modes in design phase become important after corrosion start. |
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Repositório Institucional da UNESP |
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Influence of reinforcement's corrosion into hyperstatic reinforced concrete beams: a probabilistic failure scenarios analysisInfluência da corrosão de armaduras em vigas hiperestáticas em concreto armado: uma análise probabilística dos cenários de falhareinforcements corrosionchlorides ingressFick's lawreliabilityreinforced concretefailure scenarioscorrosão de armadurasingresso de cloretosleis de Fickconfiabilidadeconcreto armadocenários de falhaAbstractThis work aims to study the mechanical effects of reinforcement's corrosion in hyperstatic reinforced concrete beams. The focus is the probabilistic determination of individual failure scenarios change as well as global failure change along time. The limit state functions assumed describe analytically bending and shear resistance of reinforced concrete rectangular cross sections as a function of steel and concrete resistance and section dimensions. It was incorporated empirical laws that penalize the steel yield stress and the reinforcement's area along time in addition to Fick's law, which models the chloride penetration into concrete pores. The reliability theory was applied based on Monte Carlo simulation method, which assesses each individual probability of failure. The probability of global structural failure was determined based in the concept of failure tree. The results of a hyperstatic reinforced concrete beam showed that reinforcements corrosion make change into the failure scenarios modes. Therefore, unimportant failure modes in design phase become important after corrosion start.ResumoEste trabalho tem como principal objetivo analisar os efeitos da corrosão de armaduras em vigas em concreto armado na alteração dos possíveis cenários de falha individuais e na falha global da estrutura ao longo do tempo. As equações de estado limite consideradas descrevem analiticamente a resistência à flexão e ao esforço cortante em seções transversais retangulares em concreto armado. Foi também incorporada uma lei que penaliza a resistência ao escoamento do aço em função da evolução da corrosão em conjunto com a lei de Fick, a qual modela a penetração de íons cloreto no interior dos poros do concreto. Equações empíricas baseadas na lei de Faraday foram utilizadas para a determinação da nova área de armadura a cada instante de tempo na análise. A teoria da confiabilidade foi aplicada adotando-se o método de simulação de Monte Carlo para a avaliação das probabilidades individuais dos modos de falha considerados. A determinação da probabilidade de falha global da estrutura seguiu um procedimento baseado no conceito de árvore de falhas. Os resultados da análise de uma viga hiperestática em concreto armado demonstram que a corrosão das armaduras pode alterar os cenários de falha, de forma que, modos de falha não importantes na fase de projeto se tornam importantes à medida que o processo corrosivo evolui.Universidade de São Paulo Escola de Engenharia de São Carlos Departamento de Engenharia de EstruturasUniversidade Estadual PaulistaUniversidade Estadual PaulistaIBRACON - Instituto Brasileiro do ConcretoUniversidade de São Paulo (USP)Universidade Estadual Paulista (Unesp)Pellizzer, G. P.Leonel, E. D.Nogueira, C. G.2018-11-12T17:27:54Z2018-11-12T17:27:54Z2015-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article479-490application/pdfhttp://dx.doi.org/10.1590/S1983-41952015000400004Revista IBRACON de Estruturas e Materiais. IBRACON - Instituto Brasileiro do Concreto, v. 8, n. 4, p. 479-490, 2015.1983-4195http://hdl.handle.net/11449/15800510.1590/S1983-41952015000400004S1983-41952015000400479S1983-41952015000400479.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista IBRACON de Estruturas e Materiaisinfo:eu-repo/semantics/openAccess2023-11-19T06:11:34Zoai:repositorio.unesp.br:11449/158005Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:08:01.929212Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Influence of reinforcement's corrosion into hyperstatic reinforced concrete beams: a probabilistic failure scenarios analysis Influência da corrosão de armaduras em vigas hiperestáticas em concreto armado: uma análise probabilística dos cenários de falha |
title |
Influence of reinforcement's corrosion into hyperstatic reinforced concrete beams: a probabilistic failure scenarios analysis |
spellingShingle |
Influence of reinforcement's corrosion into hyperstatic reinforced concrete beams: a probabilistic failure scenarios analysis Pellizzer, G. P. reinforcements corrosion chlorides ingress Fick's law reliability reinforced concrete failure scenarios corrosão de armaduras ingresso de cloretos leis de Fick confiabilidade concreto armado cenários de falha |
title_short |
Influence of reinforcement's corrosion into hyperstatic reinforced concrete beams: a probabilistic failure scenarios analysis |
title_full |
Influence of reinforcement's corrosion into hyperstatic reinforced concrete beams: a probabilistic failure scenarios analysis |
title_fullStr |
Influence of reinforcement's corrosion into hyperstatic reinforced concrete beams: a probabilistic failure scenarios analysis |
title_full_unstemmed |
Influence of reinforcement's corrosion into hyperstatic reinforced concrete beams: a probabilistic failure scenarios analysis |
title_sort |
Influence of reinforcement's corrosion into hyperstatic reinforced concrete beams: a probabilistic failure scenarios analysis |
author |
Pellizzer, G. P. |
author_facet |
Pellizzer, G. P. Leonel, E. D. Nogueira, C. G. |
author_role |
author |
author2 |
Leonel, E. D. Nogueira, C. G. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Pellizzer, G. P. Leonel, E. D. Nogueira, C. G. |
dc.subject.por.fl_str_mv |
reinforcements corrosion chlorides ingress Fick's law reliability reinforced concrete failure scenarios corrosão de armaduras ingresso de cloretos leis de Fick confiabilidade concreto armado cenários de falha |
topic |
reinforcements corrosion chlorides ingress Fick's law reliability reinforced concrete failure scenarios corrosão de armaduras ingresso de cloretos leis de Fick confiabilidade concreto armado cenários de falha |
description |
AbstractThis work aims to study the mechanical effects of reinforcement's corrosion in hyperstatic reinforced concrete beams. The focus is the probabilistic determination of individual failure scenarios change as well as global failure change along time. The limit state functions assumed describe analytically bending and shear resistance of reinforced concrete rectangular cross sections as a function of steel and concrete resistance and section dimensions. It was incorporated empirical laws that penalize the steel yield stress and the reinforcement's area along time in addition to Fick's law, which models the chloride penetration into concrete pores. The reliability theory was applied based on Monte Carlo simulation method, which assesses each individual probability of failure. The probability of global structural failure was determined based in the concept of failure tree. The results of a hyperstatic reinforced concrete beam showed that reinforcements corrosion make change into the failure scenarios modes. Therefore, unimportant failure modes in design phase become important after corrosion start. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-08-01 2018-11-12T17:27:54Z 2018-11-12T17:27:54Z |
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/S1983-41952015000400004 Revista IBRACON de Estruturas e Materiais. IBRACON - Instituto Brasileiro do Concreto, v. 8, n. 4, p. 479-490, 2015. 1983-4195 http://hdl.handle.net/11449/158005 10.1590/S1983-41952015000400004 S1983-41952015000400479 S1983-41952015000400479.pdf |
url |
http://dx.doi.org/10.1590/S1983-41952015000400004 http://hdl.handle.net/11449/158005 |
identifier_str_mv |
Revista IBRACON de Estruturas e Materiais. IBRACON - Instituto Brasileiro do Concreto, v. 8, n. 4, p. 479-490, 2015. 1983-4195 10.1590/S1983-41952015000400004 S1983-41952015000400479 S1983-41952015000400479.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 |
479-490 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_ |
1808128899942449152 |