A novel design model for predicting the shear resistance of reinforced concrete beams strengthened with EBR-CFRP systems
Autor(a) principal: | |
---|---|
Data de Publicação: | 2024 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/1822/88670 |
Resumo: | Shear resistance prediction of reinforced concrete (RC) beams strengthened with externally bonded reinforcements (EBR) is a challenging task due to the complex nature of shear resisting mechanisms and their intricate interaction. Existing design models often overlook these dependencies, leading to significant variations in prediction accuracy. In this paper, a design model is proposed by integrating the most relevant shear resisting mechanisms based on the evidence demonstrated by a large database of experimental results from RC beams shear strengthened with wet layup carbon fibre reinforced (CFRP) sheets applied according to the EBR technique. The developed approach integrates the simplified modified compression field theory (SMCFT) with a regressionbased model. A global sensitivity analysis was conducted according to which closed form equations were derived to obtain the tensile stress factor in cracked concrete and the inclination angle of the critical diagonal crack. A reliability analysis is carried out, and resistance reduction factors are achieved for different levels of reliability index. The database, composed of 284 RC beams shear strengthened with EBR-CFRP technique, is utilized to validate the proposed model, and compare its performance against some well-established existing design models. The results show that the proposed model, with an adequate framework for its use on design practice, outperforms the other considered models. |
id |
RCAP_f55cb494189458cce7fa3a6e8dd1cd28 |
---|---|
oai_identifier_str |
oai:repositorium.sdum.uminho.pt:1822/88670 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
A novel design model for predicting the shear resistance of reinforced concrete beams strengthened with EBR-CFRP systemsDesign modelShear strengtheningReinforced concrete beamsExternally bonded reinforcementsFRPReliability analysisEngenharia e Tecnologia::Engenharia CivilShear resistance prediction of reinforced concrete (RC) beams strengthened with externally bonded reinforcements (EBR) is a challenging task due to the complex nature of shear resisting mechanisms and their intricate interaction. Existing design models often overlook these dependencies, leading to significant variations in prediction accuracy. In this paper, a design model is proposed by integrating the most relevant shear resisting mechanisms based on the evidence demonstrated by a large database of experimental results from RC beams shear strengthened with wet layup carbon fibre reinforced (CFRP) sheets applied according to the EBR technique. The developed approach integrates the simplified modified compression field theory (SMCFT) with a regressionbased model. A global sensitivity analysis was conducted according to which closed form equations were derived to obtain the tensile stress factor in cracked concrete and the inclination angle of the critical diagonal crack. A reliability analysis is carried out, and resistance reduction factors are achieved for different levels of reliability index. The database, composed of 284 RC beams shear strengthened with EBR-CFRP technique, is utilized to validate the proposed model, and compare its performance against some well-established existing design models. The results show that the proposed model, with an adequate framework for its use on design practice, outperforms the other considered models.This study is a part of the project “Sticker –Innovative technique for the structural strengthening based on using CFRP laminates with multifunctional attributes and applied with advanced cement adhesives”, with the reference POCI-01-0247-FEDER-039755. The first author also acknowledges the support provided by FCT PhD individual fellowship with the reference of 2020.08876.BD. This work was partly financed by FCT / MCTES through national funds (PIDDAC) under the R&D Unit Institute for Sustainability and Innovation in Structural Engineering (ISISE), under reference UIDB/04029/2020 (doi.org/10.54499/UIDB/04029/2020), and under the Associate Laboratory Advanced Production and Intelligent Systems ARISE under reference LA/P/0112/2020.ElsevierUniversidade do MinhoMohammadi, Amir HosseinBarros, Joaquim A. O.Sena-Cruz, José20242024-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/88670eng0263-82231879-108510.1016/j.compstruct.2024.117901https://www.sciencedirect.com/science/article/pii/S0263822324000291info: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:RCAAP2024-02-10T01:21:08Zoai:repositorium.sdum.uminho.pt:1822/88670Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:37:18.261240Repositório 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 |
A novel design model for predicting the shear resistance of reinforced concrete beams strengthened with EBR-CFRP systems |
title |
A novel design model for predicting the shear resistance of reinforced concrete beams strengthened with EBR-CFRP systems |
spellingShingle |
A novel design model for predicting the shear resistance of reinforced concrete beams strengthened with EBR-CFRP systems Mohammadi, Amir Hossein Design model Shear strengthening Reinforced concrete beams Externally bonded reinforcements FRP Reliability analysis Engenharia e Tecnologia::Engenharia Civil |
title_short |
A novel design model for predicting the shear resistance of reinforced concrete beams strengthened with EBR-CFRP systems |
title_full |
A novel design model for predicting the shear resistance of reinforced concrete beams strengthened with EBR-CFRP systems |
title_fullStr |
A novel design model for predicting the shear resistance of reinforced concrete beams strengthened with EBR-CFRP systems |
title_full_unstemmed |
A novel design model for predicting the shear resistance of reinforced concrete beams strengthened with EBR-CFRP systems |
title_sort |
A novel design model for predicting the shear resistance of reinforced concrete beams strengthened with EBR-CFRP systems |
author |
Mohammadi, Amir Hossein |
author_facet |
Mohammadi, Amir Hossein Barros, Joaquim A. O. Sena-Cruz, José |
author_role |
author |
author2 |
Barros, Joaquim A. O. Sena-Cruz, José |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Mohammadi, Amir Hossein Barros, Joaquim A. O. Sena-Cruz, José |
dc.subject.por.fl_str_mv |
Design model Shear strengthening Reinforced concrete beams Externally bonded reinforcements FRP Reliability analysis Engenharia e Tecnologia::Engenharia Civil |
topic |
Design model Shear strengthening Reinforced concrete beams Externally bonded reinforcements FRP Reliability analysis Engenharia e Tecnologia::Engenharia Civil |
description |
Shear resistance prediction of reinforced concrete (RC) beams strengthened with externally bonded reinforcements (EBR) is a challenging task due to the complex nature of shear resisting mechanisms and their intricate interaction. Existing design models often overlook these dependencies, leading to significant variations in prediction accuracy. In this paper, a design model is proposed by integrating the most relevant shear resisting mechanisms based on the evidence demonstrated by a large database of experimental results from RC beams shear strengthened with wet layup carbon fibre reinforced (CFRP) sheets applied according to the EBR technique. The developed approach integrates the simplified modified compression field theory (SMCFT) with a regressionbased model. A global sensitivity analysis was conducted according to which closed form equations were derived to obtain the tensile stress factor in cracked concrete and the inclination angle of the critical diagonal crack. A reliability analysis is carried out, and resistance reduction factors are achieved for different levels of reliability index. The database, composed of 284 RC beams shear strengthened with EBR-CFRP technique, is utilized to validate the proposed model, and compare its performance against some well-established existing design models. The results show that the proposed model, with an adequate framework for its use on design practice, outperforms the other considered models. |
publishDate |
2024 |
dc.date.none.fl_str_mv |
2024 2024-01-01T00:00:00Z |
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 |
https://hdl.handle.net/1822/88670 |
url |
https://hdl.handle.net/1822/88670 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0263-8223 1879-1085 10.1016/j.compstruct.2024.117901 https://www.sciencedirect.com/science/article/pii/S0263822324000291 |
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 |
repository.mail.fl_str_mv |
|
_version_ |
1799137423922298880 |