RC beams strengthened in shear using the Embedded Through-Section technique: experimental results and analytical formulation
Autor(a) principal: | |
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Data de Publicação: | 2016 |
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/1822/43537 |
Resumo: | The Embedded Through-Section (ETS) is a recent strengthening technique that has been developed to retrofit existing reinforced concrete (RC) elements with shear reinforcement deficiencies. This technique is based on the execution of holes drilled through the element cross section, in which steel or fiber reinforced polymer (FRP) bars are inserted and bonded to the surrounding concrete with an epoxy adhesive. An experimental program was carried out with RC T-cross section beams strengthened in shear using steel ETS bars. The influence of the inclination and shear strengthening ratio of ETS on the shear strengthening efficiency was evaluated, as well as the interaction of ETS bars with existing steel stirrups. Two different analytical models are presented in this paper in order to calculate the contribution of ETS to shear resistance. The first model follows an empirical approach (experimental-based approach), while the second model takes into account the physical and mechanical principles of the technique (mechanical-based approach). The predictive performance of both models is assessed by using the experimental results. |
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RC beams strengthened in shear using the Embedded Through-Section technique: experimental results and analytical formulationEmbedded Through-Section techniqueDebondingAnalytical modellingMechanical testingB. DebondingC. Analytical modellingD. Mechanical testingScience & TechnologyThe Embedded Through-Section (ETS) is a recent strengthening technique that has been developed to retrofit existing reinforced concrete (RC) elements with shear reinforcement deficiencies. This technique is based on the execution of holes drilled through the element cross section, in which steel or fiber reinforced polymer (FRP) bars are inserted and bonded to the surrounding concrete with an epoxy adhesive. An experimental program was carried out with RC T-cross section beams strengthened in shear using steel ETS bars. The influence of the inclination and shear strengthening ratio of ETS on the shear strengthening efficiency was evaluated, as well as the interaction of ETS bars with existing steel stirrups. Two different analytical models are presented in this paper in order to calculate the contribution of ETS to shear resistance. The first model follows an empirical approach (experimental-based approach), while the second model takes into account the physical and mechanical principles of the technique (mechanical-based approach). The predictive performance of both models is assessed by using the experimental results.The authors wish to acknowledge the support provided by the CutInov project QREN n. 38780 supported by ADI, and by the Engineering Department of the University of Ferrara.ElsevierUniversidade do MinhoBreveglieri, M.Aprile, A.Barros, Joaquim A. O.2016-032016-03-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/43537eng1359-836810.1016/j.compositesb.2015.11.023info: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:RCAAP2023-07-21T11:54:20Zoai:repositorium.sdum.uminho.pt:1822/43537Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:43:48.988330Repositório 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 |
RC beams strengthened in shear using the Embedded Through-Section technique: experimental results and analytical formulation |
title |
RC beams strengthened in shear using the Embedded Through-Section technique: experimental results and analytical formulation |
spellingShingle |
RC beams strengthened in shear using the Embedded Through-Section technique: experimental results and analytical formulation Breveglieri, M. Embedded Through-Section technique Debonding Analytical modelling Mechanical testing B. Debonding C. Analytical modelling D. Mechanical testing Science & Technology |
title_short |
RC beams strengthened in shear using the Embedded Through-Section technique: experimental results and analytical formulation |
title_full |
RC beams strengthened in shear using the Embedded Through-Section technique: experimental results and analytical formulation |
title_fullStr |
RC beams strengthened in shear using the Embedded Through-Section technique: experimental results and analytical formulation |
title_full_unstemmed |
RC beams strengthened in shear using the Embedded Through-Section technique: experimental results and analytical formulation |
title_sort |
RC beams strengthened in shear using the Embedded Through-Section technique: experimental results and analytical formulation |
author |
Breveglieri, M. |
author_facet |
Breveglieri, M. Aprile, A. Barros, Joaquim A. O. |
author_role |
author |
author2 |
Aprile, A. Barros, Joaquim A. O. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Breveglieri, M. Aprile, A. Barros, Joaquim A. O. |
dc.subject.por.fl_str_mv |
Embedded Through-Section technique Debonding Analytical modelling Mechanical testing B. Debonding C. Analytical modelling D. Mechanical testing Science & Technology |
topic |
Embedded Through-Section technique Debonding Analytical modelling Mechanical testing B. Debonding C. Analytical modelling D. Mechanical testing Science & Technology |
description |
The Embedded Through-Section (ETS) is a recent strengthening technique that has been developed to retrofit existing reinforced concrete (RC) elements with shear reinforcement deficiencies. This technique is based on the execution of holes drilled through the element cross section, in which steel or fiber reinforced polymer (FRP) bars are inserted and bonded to the surrounding concrete with an epoxy adhesive. An experimental program was carried out with RC T-cross section beams strengthened in shear using steel ETS bars. The influence of the inclination and shear strengthening ratio of ETS on the shear strengthening efficiency was evaluated, as well as the interaction of ETS bars with existing steel stirrups. Two different analytical models are presented in this paper in order to calculate the contribution of ETS to shear resistance. The first model follows an empirical approach (experimental-based approach), while the second model takes into account the physical and mechanical principles of the technique (mechanical-based approach). The predictive performance of both models is assessed by using the experimental results. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-03 2016-03-01T00:00:00Z |
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/1822/43537 |
url |
http://hdl.handle.net/1822/43537 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1359-8368 10.1016/j.compositesb.2015.11.023 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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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1799132186077560832 |