Factors affecting moment redistribution at ultimate in continuous beams prestressed with external CFRP tendons
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/27899 https://doi.org/10.1016/j.compositesb.2014.05.007 |
Resumo: | A numerical investigation of redistribution of moments in continuous concrete beams prestressed with external carbon fiber reinforced polymer (CFRP) tendons at failure loads is described. A finite element analysis (FEA) model is introduced, and an extensive parametric study is carried out on two-span continuous beams. The factors examined in this study include the content of non-prestressed steel, tendon eccentricities, tendon area, effective prestress, span-to-height ratio, concrete strength, CFRP modulus of elasticity and load type. The results obtained from FEA are compared with those obtained from various codes. The study shows that the importance of some factors is not reflected in the codes. When used to calculate the degree of moment redistribution in these beams, the parameter εt (net strain in extreme tension steel) seems to be more reasonable than the parameter c/d (ratio of neutral axis depth to section effective depth). A simplified equation for calculating the degree of moment redistribution at ultimate is proposed. |
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Factors affecting moment redistribution at ultimate in continuous beams prestressed with external CFRP tendonsA. Carbon fiberB. StrengthC. Finite element analysis (FEA)C. Numerical analysisA numerical investigation of redistribution of moments in continuous concrete beams prestressed with external carbon fiber reinforced polymer (CFRP) tendons at failure loads is described. A finite element analysis (FEA) model is introduced, and an extensive parametric study is carried out on two-span continuous beams. The factors examined in this study include the content of non-prestressed steel, tendon eccentricities, tendon area, effective prestress, span-to-height ratio, concrete strength, CFRP modulus of elasticity and load type. The results obtained from FEA are compared with those obtained from various codes. The study shows that the importance of some factors is not reflected in the codes. When used to calculate the degree of moment redistribution in these beams, the parameter εt (net strain in extreme tension steel) seems to be more reasonable than the parameter c/d (ratio of neutral axis depth to section effective depth). A simplified equation for calculating the degree of moment redistribution at ultimate is proposed.Elsevier2014-11info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/27899http://hdl.handle.net/10316/27899https://doi.org/10.1016/j.compositesb.2014.05.007engLOU, Tiejiong; LOPES, Sergio M. R.; LOPES, Adelino V. - Factors affecting moment redistribution at ultimate in continuous beams prestressed with external CFRP tendons. "Composites Part B: Engineering". ISSN 1359-8368. Vol. 66 (2014) p. 136–1461359-8368http://www.sciencedirect.com/science/article/pii/S1359836814002054Lou, TiejiongLopes, Sérgio M. R.Lopes, Adelino V.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2021-09-21T08:22:41Zoai:estudogeral.uc.pt:10316/27899Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:50:17.669636Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Factors affecting moment redistribution at ultimate in continuous beams prestressed with external CFRP tendons |
title |
Factors affecting moment redistribution at ultimate in continuous beams prestressed with external CFRP tendons |
spellingShingle |
Factors affecting moment redistribution at ultimate in continuous beams prestressed with external CFRP tendons Lou, Tiejiong A. Carbon fiber B. Strength C. Finite element analysis (FEA) C. Numerical analysis |
title_short |
Factors affecting moment redistribution at ultimate in continuous beams prestressed with external CFRP tendons |
title_full |
Factors affecting moment redistribution at ultimate in continuous beams prestressed with external CFRP tendons |
title_fullStr |
Factors affecting moment redistribution at ultimate in continuous beams prestressed with external CFRP tendons |
title_full_unstemmed |
Factors affecting moment redistribution at ultimate in continuous beams prestressed with external CFRP tendons |
title_sort |
Factors affecting moment redistribution at ultimate in continuous beams prestressed with external CFRP tendons |
author |
Lou, Tiejiong |
author_facet |
Lou, Tiejiong Lopes, Sérgio M. R. Lopes, Adelino V. |
author_role |
author |
author2 |
Lopes, Sérgio M. R. Lopes, Adelino V. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Lou, Tiejiong Lopes, Sérgio M. R. Lopes, Adelino V. |
dc.subject.por.fl_str_mv |
A. Carbon fiber B. Strength C. Finite element analysis (FEA) C. Numerical analysis |
topic |
A. Carbon fiber B. Strength C. Finite element analysis (FEA) C. Numerical analysis |
description |
A numerical investigation of redistribution of moments in continuous concrete beams prestressed with external carbon fiber reinforced polymer (CFRP) tendons at failure loads is described. A finite element analysis (FEA) model is introduced, and an extensive parametric study is carried out on two-span continuous beams. The factors examined in this study include the content of non-prestressed steel, tendon eccentricities, tendon area, effective prestress, span-to-height ratio, concrete strength, CFRP modulus of elasticity and load type. The results obtained from FEA are compared with those obtained from various codes. The study shows that the importance of some factors is not reflected in the codes. When used to calculate the degree of moment redistribution in these beams, the parameter εt (net strain in extreme tension steel) seems to be more reasonable than the parameter c/d (ratio of neutral axis depth to section effective depth). A simplified equation for calculating the degree of moment redistribution at ultimate is proposed. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-11 |
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://hdl.handle.net/10316/27899 http://hdl.handle.net/10316/27899 https://doi.org/10.1016/j.compositesb.2014.05.007 |
url |
http://hdl.handle.net/10316/27899 https://doi.org/10.1016/j.compositesb.2014.05.007 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
LOU, Tiejiong; LOPES, Sergio M. R.; LOPES, Adelino V. - Factors affecting moment redistribution at ultimate in continuous beams prestressed with external CFRP tendons. "Composites Part B: Engineering". ISSN 1359-8368. Vol. 66 (2014) p. 136–146 1359-8368 http://www.sciencedirect.com/science/article/pii/S1359836814002054 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799133784548835328 |