A design model for fibre reinforced concrete beams pre-stressed with steel and FRP bars

Bibliographic Details
Main Author: Barros, Joaquim A. O.
Publication Date: 2012
Other Authors: Taheri, Mahsa, Salehian, Hamidreza, Mendes, Pedro J. D.
Format: Article
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: https://hdl.handle.net/1822/21513
Summary: This paper presents a design oriented model to determine the moment-curvature relationship of elements of rectangular cross section failing in bending, made by strain softening or strain hardening fibre reinforced concrete (FRC) and reinforced with perfectly bonded pre-stressed steel and fibre reinforced polymeric (FRP) bars. Since FRP bars are not affected by corrosion, they have the minimum FRC cover thickness that guaranty proper bond conditions, while steel bars are positioned with a thicker FRC cover to increase their protection against corrosion. Using the moment-curvature relationship predicted by the model in an algorithm based on the virtual work method, a numerical strategy is adopted to evaluate the load-deflection response of statically determinate beams. The predictive performance of the proposed formulation is assessed by simulating the response of available experimental results. By using this model, a parametric study is carried out in order to evaluate the influence of the main parameters that characterize the post cracking behaviour of FRC, and the prestress level applied to FRP and steel bars, on the moment-curvature and load-deflection responses of this type of structural elements. Finally the shear resistance of this structural system is predicted
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spelling A design model for fibre reinforced concrete beams pre-stressed with steel and FRP barsFibre reinforced concreteStrain hardeningFlexural reinforcementPre-stressed steel barsPre-stressed FRP barsStrain softeningScience & TechnologyThis paper presents a design oriented model to determine the moment-curvature relationship of elements of rectangular cross section failing in bending, made by strain softening or strain hardening fibre reinforced concrete (FRC) and reinforced with perfectly bonded pre-stressed steel and fibre reinforced polymeric (FRP) bars. Since FRP bars are not affected by corrosion, they have the minimum FRC cover thickness that guaranty proper bond conditions, while steel bars are positioned with a thicker FRC cover to increase their protection against corrosion. Using the moment-curvature relationship predicted by the model in an algorithm based on the virtual work method, a numerical strategy is adopted to evaluate the load-deflection response of statically determinate beams. The predictive performance of the proposed formulation is assessed by simulating the response of available experimental results. By using this model, a parametric study is carried out in order to evaluate the influence of the main parameters that characterize the post cracking behaviour of FRC, and the prestress level applied to FRP and steel bars, on the moment-curvature and load-deflection responses of this type of structural elements. Finally the shear resistance of this structural system is predictedThe study reported in this paper is part of the research program "DURCOST - Innovation in reinforcing systems for sustainable prefabricated structures of higher durability and enhanced structural performance" supported by FCT, PTDC/ECM/105700/2008. The second and forth authors acknowledge the research grant under the project QREN number 3456 "PONTALUMIS", while the third author acknowledges the support provided by FCT Grant SFRH/BD/71934/2010.ElsevierUniversidade do MinhoBarros, Joaquim A. O.Taheri, MahsaSalehian, HamidrezaMendes, Pedro J. D.20122012-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/21513eng0263-822310.1016/j.compstruct.2012.03.007http://www.sciencedirect.com/info:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-04-12T04:15:59Zoai:repositorium.sdum.uminho.pt:1822/21513Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-28T14:58:43.287927Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv A design model for fibre reinforced concrete beams pre-stressed with steel and FRP bars
title A design model for fibre reinforced concrete beams pre-stressed with steel and FRP bars
spellingShingle A design model for fibre reinforced concrete beams pre-stressed with steel and FRP bars
Barros, Joaquim A. O.
Fibre reinforced concrete
Strain hardening
Flexural reinforcement
Pre-stressed steel bars
Pre-stressed FRP bars
Strain softening
Science & Technology
title_short A design model for fibre reinforced concrete beams pre-stressed with steel and FRP bars
title_full A design model for fibre reinforced concrete beams pre-stressed with steel and FRP bars
title_fullStr A design model for fibre reinforced concrete beams pre-stressed with steel and FRP bars
title_full_unstemmed A design model for fibre reinforced concrete beams pre-stressed with steel and FRP bars
title_sort A design model for fibre reinforced concrete beams pre-stressed with steel and FRP bars
author Barros, Joaquim A. O.
author_facet Barros, Joaquim A. O.
Taheri, Mahsa
Salehian, Hamidreza
Mendes, Pedro J. D.
author_role author
author2 Taheri, Mahsa
Salehian, Hamidreza
Mendes, Pedro J. D.
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Barros, Joaquim A. O.
Taheri, Mahsa
Salehian, Hamidreza
Mendes, Pedro J. D.
dc.subject.por.fl_str_mv Fibre reinforced concrete
Strain hardening
Flexural reinforcement
Pre-stressed steel bars
Pre-stressed FRP bars
Strain softening
Science & Technology
topic Fibre reinforced concrete
Strain hardening
Flexural reinforcement
Pre-stressed steel bars
Pre-stressed FRP bars
Strain softening
Science & Technology
description This paper presents a design oriented model to determine the moment-curvature relationship of elements of rectangular cross section failing in bending, made by strain softening or strain hardening fibre reinforced concrete (FRC) and reinforced with perfectly bonded pre-stressed steel and fibre reinforced polymeric (FRP) bars. Since FRP bars are not affected by corrosion, they have the minimum FRC cover thickness that guaranty proper bond conditions, while steel bars are positioned with a thicker FRC cover to increase their protection against corrosion. Using the moment-curvature relationship predicted by the model in an algorithm based on the virtual work method, a numerical strategy is adopted to evaluate the load-deflection response of statically determinate beams. The predictive performance of the proposed formulation is assessed by simulating the response of available experimental results. By using this model, a parametric study is carried out in order to evaluate the influence of the main parameters that characterize the post cracking behaviour of FRC, and the prestress level applied to FRP and steel bars, on the moment-curvature and load-deflection responses of this type of structural elements. Finally the shear resistance of this structural system is predicted
publishDate 2012
dc.date.none.fl_str_mv 2012
2012-01-01T00:00:00Z
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/1822/21513
url https://hdl.handle.net/1822/21513
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0263-8223
10.1016/j.compstruct.2012.03.007
http://www.sciencedirect.com/
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:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
_version_ 1833595016967094272

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