Shear strengthening of reinforced concrete beams by means of vertical prestressed reinforcement

Strengthening reinforced concrete (RC) elements critical to shear with prestressed transversal reinforcement can be an efficient method to increase the shear resistance of structures, allowing the development of the full flexural capacity. However, research on the performance of this technique is ve...

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Detalles Bibliográficos
Autores: Santos Ferreira, Denise Carina, Bairán García, Jesús Miguel|||0000-0003-2831-1479, Marí Bernat, Antonio Ricardo|||0000-0002-0994-0715
Tipo de recurso: artículo
Fecha de publicación:2016
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/81839
Acceso en línea:https://hdl.handle.net/2117/81839
https://dx.doi.org/10.1080/15732479.2015.1019893
Access Level:acceso abierto
Palabra clave:Concrete beams
RC beams
shear
strengthening
post-tensioned stirrups
nonlinear FE analysis
fibre beam model
finite-element-analysis
numerical-simulation
polymer composites
model
construction
behavior
Bigues de formigó armat
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
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spelling Shear strengthening of reinforced concrete beams by means of vertical prestressed reinforcementSantos Ferreira, Denise CarinaBairán García, Jesús Miguel|||0000-0003-2831-1479Marí Bernat, Antonio Ricardo|||0000-0002-0994-0715Concrete beamsRC beamsshearstrengtheningpost-tensioned stirrupsnonlinear FE analysisfibre beam modelfinite-element-analysisRC beamsnumerical-simulationpolymer compositesmodelconstructionbehaviorBigues de formigó armatÀrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigóStrengthening reinforced concrete (RC) elements critical to shear with prestressed transversal reinforcement can be an efficient method to increase the shear resistance of structures, allowing the development of the full flexural capacity. However, research on the performance of this technique is very limited, and methods for designing the optimum amount of prestressed transversal reinforcement and assessing the retrofitted structure have not been produced yet. Nonlinear finite element models are an important tool regarding predicting the efficiency of these interventions. In this paper, a shear-sensitive fibre beam formulation is extended in order to account for the effects of unbonded vertical external prestressed reinforcement in the structural response of RC beams. The model is validated with experimental tests available in literature, succeeding in capturing the gain of shear strength brought by different strengthening solutions. A parametric study is performed to find the optimal quantity of transversal reinforcement that ensures flexural failure mechanism in a beam with insufficient internal shear reinforcement. The relative simplicity of the numerical model makes it suitable for engineering practice.Peer Reviewed20162016-03-0120162016-01-21journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/81839https://dx.doi.org/10.1080/15732479.2015.1019893reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/818392026-05-27T15:37:01Z
dc.title.none.fl_str_mv Shear strengthening of reinforced concrete beams by means of vertical prestressed reinforcement
title Shear strengthening of reinforced concrete beams by means of vertical prestressed reinforcement
spellingShingle Shear strengthening of reinforced concrete beams by means of vertical prestressed reinforcement
Santos Ferreira, Denise Carina
Concrete beams
RC beams
shear
strengthening
post-tensioned stirrups
nonlinear FE analysis
fibre beam model
finite-element-analysis
RC beams
numerical-simulation
polymer composites
model
construction
behavior
Bigues de formigó armat
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
title_short Shear strengthening of reinforced concrete beams by means of vertical prestressed reinforcement
title_full Shear strengthening of reinforced concrete beams by means of vertical prestressed reinforcement
title_fullStr Shear strengthening of reinforced concrete beams by means of vertical prestressed reinforcement
title_full_unstemmed Shear strengthening of reinforced concrete beams by means of vertical prestressed reinforcement
title_sort Shear strengthening of reinforced concrete beams by means of vertical prestressed reinforcement
dc.creator.none.fl_str_mv Santos Ferreira, Denise Carina
Bairán García, Jesús Miguel|||0000-0003-2831-1479
Marí Bernat, Antonio Ricardo|||0000-0002-0994-0715
author Santos Ferreira, Denise Carina
author_facet Santos Ferreira, Denise Carina
Bairán García, Jesús Miguel|||0000-0003-2831-1479
Marí Bernat, Antonio Ricardo|||0000-0002-0994-0715
author_role author
author2 Bairán García, Jesús Miguel|||0000-0003-2831-1479
Marí Bernat, Antonio Ricardo|||0000-0002-0994-0715
author2_role author
author
dc.subject.none.fl_str_mv Concrete beams
RC beams
shear
strengthening
post-tensioned stirrups
nonlinear FE analysis
fibre beam model
finite-element-analysis
RC beams
numerical-simulation
polymer composites
model
construction
behavior
Bigues de formigó armat
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
topic Concrete beams
RC beams
shear
strengthening
post-tensioned stirrups
nonlinear FE analysis
fibre beam model
finite-element-analysis
RC beams
numerical-simulation
polymer composites
model
construction
behavior
Bigues de formigó armat
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
description Strengthening reinforced concrete (RC) elements critical to shear with prestressed transversal reinforcement can be an efficient method to increase the shear resistance of structures, allowing the development of the full flexural capacity. However, research on the performance of this technique is very limited, and methods for designing the optimum amount of prestressed transversal reinforcement and assessing the retrofitted structure have not been produced yet. Nonlinear finite element models are an important tool regarding predicting the efficiency of these interventions. In this paper, a shear-sensitive fibre beam formulation is extended in order to account for the effects of unbonded vertical external prestressed reinforcement in the structural response of RC beams. The model is validated with experimental tests available in literature, succeeding in capturing the gain of shear strength brought by different strengthening solutions. A parametric study is performed to find the optimal quantity of transversal reinforcement that ensures flexural failure mechanism in a beam with insufficient internal shear reinforcement. The relative simplicity of the numerical model makes it suitable for engineering practice.
publishDate 2016
dc.date.none.fl_str_mv 2016
2016-03-01
2016
2016-01-21
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/81839
https://dx.doi.org/10.1080/15732479.2015.1019893
url https://hdl.handle.net/2117/81839
https://dx.doi.org/10.1080/15732479.2015.1019893
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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