Design-oriented approach to predict shear strength of reinforced concrete beams
Autor(a) principal: | |
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Data de Publicação: | 2018 |
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/1822/71717 |
Resumo: | There are different approaches to predict the shear strength of reinforced concrete (RC) beams, but their predictive performance is still relatively low due to several and complex resisting mechanisms involved in shear. In addition, most of design approaches ignore the influence of the flange of T cross section beams on the ultimate shear capacity. This paper aims to present a design‐oriented approach to predict the load carrying capacity of RC beams failing in shear. This approach is based on the simplified modified compression field theory (SMCFT). A sensitivity analysis is carried out to assess the importance of the input parameters that mostly affect the shear strength of RC members. Taking into account the results of the sensitivity analysis, two simple equations are proposed for obtaining the: (a) tensile stress factor in the cracked concrete (β) and (b) inclination of the diagonal compressive stress in the web of the section (θ). The obtained equations eliminate the iterative process required by the SMCFT and provide a straightforward design methodology to find β and θ with suitable accuracy for design purposes. In addition, a coefficient is presented to take into account the effect of the flange on the shear capacity of T shaped cross section beams. To appraise the predictive performance of the new approach, a database is set. By evaluating the ratio between the experimental results and the analytical predictions, an average value of 1.24 with a coefficient of variation of 20.9% is obtained |
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Design-oriented approach to predict shear strength of reinforced concrete beamsReinforced concrete beamsShear strengthSimplified Modified Compression Field TheorySensitivity AnalysisMonte Carlo simulationT cross section beamsEngenharia e Tecnologia::Engenharia CivilScience & TechnologyThere are different approaches to predict the shear strength of reinforced concrete (RC) beams, but their predictive performance is still relatively low due to several and complex resisting mechanisms involved in shear. In addition, most of design approaches ignore the influence of the flange of T cross section beams on the ultimate shear capacity. This paper aims to present a design‐oriented approach to predict the load carrying capacity of RC beams failing in shear. This approach is based on the simplified modified compression field theory (SMCFT). A sensitivity analysis is carried out to assess the importance of the input parameters that mostly affect the shear strength of RC members. Taking into account the results of the sensitivity analysis, two simple equations are proposed for obtaining the: (a) tensile stress factor in the cracked concrete (β) and (b) inclination of the diagonal compressive stress in the web of the section (θ). The obtained equations eliminate the iterative process required by the SMCFT and provide a straightforward design methodology to find β and θ with suitable accuracy for design purposes. In addition, a coefficient is presented to take into account the effect of the flange on the shear capacity of T shaped cross section beams. To appraise the predictive performance of the new approach, a database is set. By evaluating the ratio between the experimental results and the analytical predictions, an average value of 1.24 with a coefficient of variation of 20.9% is obtainedFundação para a Ciência e a Tecnologia. Grant Number: SFRH/BSAB/114302/2016Ernst & SohnUniversidade do MinhoBaghi, HadiBarros, Joaquim A. O.2018-022018-02-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/71717engBaghi, H., & Barros, J. A. (2018). Design‐oriented approach to predict shear strength of reinforced concrete beams. Structural Concrete, 19(1), 98-115.1464-417710.1002/suco.201700095https://onlinelibrary.wiley.com/doi/full/10.1002/suco.201700095info: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:RCAAP2023-07-21T12:54:20Zoai:repositorium.sdum.uminho.pt:1822/71717Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:53:51.232467Repositório 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 |
Design-oriented approach to predict shear strength of reinforced concrete beams |
title |
Design-oriented approach to predict shear strength of reinforced concrete beams |
spellingShingle |
Design-oriented approach to predict shear strength of reinforced concrete beams Baghi, Hadi Reinforced concrete beams Shear strength Simplified Modified Compression Field Theory Sensitivity Analysis Monte Carlo simulation T cross section beams Engenharia e Tecnologia::Engenharia Civil Science & Technology |
title_short |
Design-oriented approach to predict shear strength of reinforced concrete beams |
title_full |
Design-oriented approach to predict shear strength of reinforced concrete beams |
title_fullStr |
Design-oriented approach to predict shear strength of reinforced concrete beams |
title_full_unstemmed |
Design-oriented approach to predict shear strength of reinforced concrete beams |
title_sort |
Design-oriented approach to predict shear strength of reinforced concrete beams |
author |
Baghi, Hadi |
author_facet |
Baghi, Hadi Barros, Joaquim A. O. |
author_role |
author |
author2 |
Barros, Joaquim A. O. |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Baghi, Hadi Barros, Joaquim A. O. |
dc.subject.por.fl_str_mv |
Reinforced concrete beams Shear strength Simplified Modified Compression Field Theory Sensitivity Analysis Monte Carlo simulation T cross section beams Engenharia e Tecnologia::Engenharia Civil Science & Technology |
topic |
Reinforced concrete beams Shear strength Simplified Modified Compression Field Theory Sensitivity Analysis Monte Carlo simulation T cross section beams Engenharia e Tecnologia::Engenharia Civil Science & Technology |
description |
There are different approaches to predict the shear strength of reinforced concrete (RC) beams, but their predictive performance is still relatively low due to several and complex resisting mechanisms involved in shear. In addition, most of design approaches ignore the influence of the flange of T cross section beams on the ultimate shear capacity. This paper aims to present a design‐oriented approach to predict the load carrying capacity of RC beams failing in shear. This approach is based on the simplified modified compression field theory (SMCFT). A sensitivity analysis is carried out to assess the importance of the input parameters that mostly affect the shear strength of RC members. Taking into account the results of the sensitivity analysis, two simple equations are proposed for obtaining the: (a) tensile stress factor in the cracked concrete (β) and (b) inclination of the diagonal compressive stress in the web of the section (θ). The obtained equations eliminate the iterative process required by the SMCFT and provide a straightforward design methodology to find β and θ with suitable accuracy for design purposes. In addition, a coefficient is presented to take into account the effect of the flange on the shear capacity of T shaped cross section beams. To appraise the predictive performance of the new approach, a database is set. By evaluating the ratio between the experimental results and the analytical predictions, an average value of 1.24 with a coefficient of variation of 20.9% is obtained |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-02 2018-02-01T00:00:00Z |
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/1822/71717 |
url |
http://hdl.handle.net/1822/71717 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Baghi, H., & Barros, J. A. (2018). Design‐oriented approach to predict shear strength of reinforced concrete beams. Structural Concrete, 19(1), 98-115. 1464-4177 10.1002/suco.201700095 https://onlinelibrary.wiley.com/doi/full/10.1002/suco.201700095 |
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 |
Ernst & Sohn |
publisher.none.fl_str_mv |
Ernst & Sohn |
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 |
|
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1799133135879798784 |