Neutral axis depth and moment redistribution in FRP and steel reinforced concrete continuous beams
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/10316/27645 https://doi.org/10.1016/j.compositesb.2014.10.044 |
Resumo: | The neutral axis depth is considered the best parameter for quantifying the moment redistribution in continuous concrete beams, as exemplified in various design codes worldwide. It is therefore important to well understand the variation of neutral axis depth against moment redistribution. This paper describes a theoretical investigation into the neutral axis depth and moment redistribution in concrete beams reinforced with fibre reinforced polymer (FRP) and steel bars. A finite element model has been developed. The model predictions are in favourable agreement with experimental results. Three types of reinforcement are considered, namely, glass fibre, carbon fibre and steel. Various levels of reinforcement ratio are used for a parametric evaluation. The results indicate that FRP reinforced concrete continuous beams exhibit significantly different response characteristics regarding the moment redistribution and variation of neutral axis depth from those of steel reinforced ones. In addition, it is found that the code recommendations are generally unsafe for calculating the permissible moment redistribution in FRP reinforced concrete beams, but the neglect of redistribution in such beams may be overconservative. |
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Neutral axis depth and moment redistribution in FRP and steel reinforced concrete continuous beamsA. Carbon fibreA. Glass fibreC. Numerical analysisThe neutral axis depth is considered the best parameter for quantifying the moment redistribution in continuous concrete beams, as exemplified in various design codes worldwide. It is therefore important to well understand the variation of neutral axis depth against moment redistribution. This paper describes a theoretical investigation into the neutral axis depth and moment redistribution in concrete beams reinforced with fibre reinforced polymer (FRP) and steel bars. A finite element model has been developed. The model predictions are in favourable agreement with experimental results. Three types of reinforcement are considered, namely, glass fibre, carbon fibre and steel. Various levels of reinforcement ratio are used for a parametric evaluation. The results indicate that FRP reinforced concrete continuous beams exhibit significantly different response characteristics regarding the moment redistribution and variation of neutral axis depth from those of steel reinforced ones. In addition, it is found that the code recommendations are generally unsafe for calculating the permissible moment redistribution in FRP reinforced concrete beams, but the neglect of redistribution in such beams may be overconservative.Elsevier2014info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/27645http://hdl.handle.net/10316/27645https://doi.org/10.1016/j.compositesb.2014.10.044engLOU, Tiejiong; LOPES, Sergio M. R.; LOPES, Adelino V. - Neutral axis depth and moment redistribution in FRP and steel reinforced concrete continuous beams. "Composites Part B: Engineering". ISSN 1359-8368. Vol. 70 (2013) p. 44-521359-8368http://www.sciencedirect.com/science/article/pii/S1359836814005009Lou, 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:RCAAP2021-09-21T08:24:08Zoai:estudogeral.uc.pt:10316/27645Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:50:17.223305Repositório 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 |
Neutral axis depth and moment redistribution in FRP and steel reinforced concrete continuous beams |
title |
Neutral axis depth and moment redistribution in FRP and steel reinforced concrete continuous beams |
spellingShingle |
Neutral axis depth and moment redistribution in FRP and steel reinforced concrete continuous beams Lou, Tiejiong A. Carbon fibre A. Glass fibre C. Numerical analysis |
title_short |
Neutral axis depth and moment redistribution in FRP and steel reinforced concrete continuous beams |
title_full |
Neutral axis depth and moment redistribution in FRP and steel reinforced concrete continuous beams |
title_fullStr |
Neutral axis depth and moment redistribution in FRP and steel reinforced concrete continuous beams |
title_full_unstemmed |
Neutral axis depth and moment redistribution in FRP and steel reinforced concrete continuous beams |
title_sort |
Neutral axis depth and moment redistribution in FRP and steel reinforced concrete continuous beams |
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 fibre A. Glass fibre C. Numerical analysis |
topic |
A. Carbon fibre A. Glass fibre C. Numerical analysis |
description |
The neutral axis depth is considered the best parameter for quantifying the moment redistribution in continuous concrete beams, as exemplified in various design codes worldwide. It is therefore important to well understand the variation of neutral axis depth against moment redistribution. This paper describes a theoretical investigation into the neutral axis depth and moment redistribution in concrete beams reinforced with fibre reinforced polymer (FRP) and steel bars. A finite element model has been developed. The model predictions are in favourable agreement with experimental results. Three types of reinforcement are considered, namely, glass fibre, carbon fibre and steel. Various levels of reinforcement ratio are used for a parametric evaluation. The results indicate that FRP reinforced concrete continuous beams exhibit significantly different response characteristics regarding the moment redistribution and variation of neutral axis depth from those of steel reinforced ones. In addition, it is found that the code recommendations are generally unsafe for calculating the permissible moment redistribution in FRP reinforced concrete beams, but the neglect of redistribution in such beams may be overconservative. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014 |
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/10316/27645 http://hdl.handle.net/10316/27645 https://doi.org/10.1016/j.compositesb.2014.10.044 |
url |
http://hdl.handle.net/10316/27645 https://doi.org/10.1016/j.compositesb.2014.10.044 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
LOU, Tiejiong; LOPES, Sergio M. R.; LOPES, Adelino V. - Neutral axis depth and moment redistribution in FRP and steel reinforced concrete continuous beams. "Composites Part B: Engineering". ISSN 1359-8368. Vol. 70 (2013) p. 44-52 1359-8368 http://www.sciencedirect.com/science/article/pii/S1359836814005009 |
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 |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799133784534155264 |