External CFRP tendon members: Secondary reactions and moment redistribution
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/10316/24821 https://doi.org/10.1016/j.compositesb.2013.10.010 |
Resumo: | The response of prestress secondary reactions in the post-elastic range has been a topic of much controversy. Due to the brittleness of FRP (fiber reinforced polymer) composites, external FRP tendon members may have different moment redistribution characteristics compared to conventional concrete members. This paper presents a numerical investigation into the secondary reactions and moment redistribution in prestressed concrete continuous members with external CFRP tendons. The investigation parameters include the initial prestress level and the pattern of loading. The secondary reactions are computed using a newly developed method based on the linear transformation concept combined with a nonlinear finite element analysis. The results indicate that the secondary reactions increase quicker after concrete cracking and nonprestressed steel yielding. As a consequence, the secondary moment should be included in the design moment. The moment redistribution behavior for symmetrical loading is shown to be quite different from that for unsymmetrical loading. The study also shows that the effect of initial prestress on the moment redistribution is rather important. |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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External CFRP tendon members: Secondary reactions and moment redistributionFibresMechanical propertiesFinite element analysisComputational modelingThe response of prestress secondary reactions in the post-elastic range has been a topic of much controversy. Due to the brittleness of FRP (fiber reinforced polymer) composites, external FRP tendon members may have different moment redistribution characteristics compared to conventional concrete members. This paper presents a numerical investigation into the secondary reactions and moment redistribution in prestressed concrete continuous members with external CFRP tendons. The investigation parameters include the initial prestress level and the pattern of loading. The secondary reactions are computed using a newly developed method based on the linear transformation concept combined with a nonlinear finite element analysis. The results indicate that the secondary reactions increase quicker after concrete cracking and nonprestressed steel yielding. As a consequence, the secondary moment should be included in the design moment. The moment redistribution behavior for symmetrical loading is shown to be quite different from that for unsymmetrical loading. The study also shows that the effect of initial prestress on the moment redistribution is rather important.Elsevier2014-02info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/24821http://hdl.handle.net/10316/24821https://doi.org/10.1016/j.compositesb.2013.10.010engLOU, Tiejiong; LOPES, Sérgio M.R., LOPES, Adelino V. - External CFRP tendon members: Secondary reactions and moment redistribution. "Composites Part B: Engineering". ISSN 1359-8368. Vol. 57 (2014) p. 250-2611359-8368http://www.sciencedirect.com/science/journal/13598368Lou, 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:RCAAP2021-09-21T08:22:22Zoai:estudogeral.uc.pt:10316/24821Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:50:16.543765Repositório 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 |
External CFRP tendon members: Secondary reactions and moment redistribution |
title |
External CFRP tendon members: Secondary reactions and moment redistribution |
spellingShingle |
External CFRP tendon members: Secondary reactions and moment redistribution Lou, Tiejiong Fibres Mechanical properties Finite element analysis Computational modeling |
title_short |
External CFRP tendon members: Secondary reactions and moment redistribution |
title_full |
External CFRP tendon members: Secondary reactions and moment redistribution |
title_fullStr |
External CFRP tendon members: Secondary reactions and moment redistribution |
title_full_unstemmed |
External CFRP tendon members: Secondary reactions and moment redistribution |
title_sort |
External CFRP tendon members: Secondary reactions and moment redistribution |
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 |
Fibres Mechanical properties Finite element analysis Computational modeling |
topic |
Fibres Mechanical properties Finite element analysis Computational modeling |
description |
The response of prestress secondary reactions in the post-elastic range has been a topic of much controversy. Due to the brittleness of FRP (fiber reinforced polymer) composites, external FRP tendon members may have different moment redistribution characteristics compared to conventional concrete members. This paper presents a numerical investigation into the secondary reactions and moment redistribution in prestressed concrete continuous members with external CFRP tendons. The investigation parameters include the initial prestress level and the pattern of loading. The secondary reactions are computed using a newly developed method based on the linear transformation concept combined with a nonlinear finite element analysis. The results indicate that the secondary reactions increase quicker after concrete cracking and nonprestressed steel yielding. As a consequence, the secondary moment should be included in the design moment. The moment redistribution behavior for symmetrical loading is shown to be quite different from that for unsymmetrical loading. The study also shows that the effect of initial prestress on the moment redistribution is rather important. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-02 |
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/10316/24821 http://hdl.handle.net/10316/24821 https://doi.org/10.1016/j.compositesb.2013.10.010 |
url |
http://hdl.handle.net/10316/24821 https://doi.org/10.1016/j.compositesb.2013.10.010 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
LOU, Tiejiong; LOPES, Sérgio M.R., LOPES, Adelino V. - External CFRP tendon members: Secondary reactions and moment redistribution. "Composites Part B: Engineering". ISSN 1359-8368. Vol. 57 (2014) p. 250-261 1359-8368 http://www.sciencedirect.com/science/journal/13598368 |
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 |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
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 |
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1799133784512135168 |