Influence of reinforcement's corrosion into hyperstatic reinforced concrete beams: a probabilistic failure scenarios analysis

Detalhes bibliográficos
Autor(a) principal: Pellizzer, G. P.
Data de Publicação: 2015
Outros Autores: Leonel, E. D., Nogueira, C. G.
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.
id UNSP_d63821a69c48ac10c00eb9a31987baac
oai_identifier_str oai:repositorio.unesp.br:11449/158005
network_acronym_str UNSP
network_name_str Repositório Institucional da UNESP
repository_id_str 2946
spelling 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

Registros relacionados