Modelling of tension-stiffening in bending RC elements based on equivalent stiffness of the rebar

The contribution of tensioned concrete between cracks (tension-stiffening) cannot be ignored when analysing deformation of reinforced concrete elements. The tension-stiffening effect is crucial when it comes to adequately estimating the load-deformation response of steel reinforced concrete and the...

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Autores: Torres Llinàs, Lluís, Barris Peña, Cristina, Kaklauskas, Gintaris, Gribniak, Viktor
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2015
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10256/12347
Acceso en línea:http://hdl.handle.net/10256/12347
Access Level:acceso embargado
Palabra clave:Assaigs de materials
Materials -- Testing
Resistència de materials
Strength of materials
Esforç i tensió
Strains and stresses
Formigó armat -- Proves
Reinforced concrete -- Testing
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spelling Modelling of tension-stiffening in bending RC elements based on equivalent stiffness of the rebarTorres Llinàs, LluísBarris Peña, CristinaKaklauskas, GintarisGribniak, ViktorAssaigs de materialsMaterials -- TestingResistència de materialsStrength of materialsEsforç i tensióStrains and stressesFormigó armat -- ProvesReinforced concrete -- TestingThe contribution of tensioned concrete between cracks (tension-stiffening) cannot be ignored when analysing deformation of reinforced concrete elements. The tension-stiffening effect is crucial when it comes to adequately estimating the load-deformation response of steel reinforced concrete and the more recently appeared fibre reinforced polymer (FRP) reinforced concrete. This paper presents a unified methodology for numerical modelling of the tension-stiffening effect in steel as well as FRP reinforced flexural members using the concept of equivalent deformation modulus and the smeared crack approach to obtain a modified stress-strain relation of the reinforcement. A closed-form solution for the equivalent secant modulus of deformation of the tensioned reinforcement is proposed for rectangular sections taking the Eurocode 2 curvature prediction technique as the reference. Using equations based on general principles of structural mechanics, the main influencing parameters are obtained. It is found that the ratio between the equivalent stiffness and the initial stiffness basically depends on the product of the modular ratio and reinforcement ratio (nρ), the effective-to-total depth ratio (d/h), and the level of loading. The proposed methodology is adequate for numerical modelling of tension-stiffening for different FRP and steel reinforcement, under both service and ultimate conditions. Comparison of the predicted and experimental data obtained by the authors indicates that the proposed methodology is capable to adequately model the tension-stiffening effect in beams reinforced with FRP or steel bars within wide range of loadingThe authors acknowledge the support provided by the Spanish Government (Ministerio de Ciencia e Innovación), Project ref. BIA2010-20234-C03-02. The authors also gratefully acknowledge the financial support provided by the Research Council of Lithuania (Project No.MIP–083/2012) and the European Social Fund (Project No. VP1-3.1-ŠMM-08-K-01-020). Furthermore, the authors would like to thank COST Action TU 1207 “Next Generation Design Guidelines for Composites in Construction” for facilitating their collaborationTechno-PressMinisterio de Ciencia e Innovación (Espanya)infoinfo2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10256/12347http://hdl.handle.net/10256/12347© Structural Engineering and Mechanics, 2015, vol. 53, núm. 5, p. 997-1016Articles publicats (D-EMCI)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/altIdentifier/doi/10.12989/sem.2015.53.5.997info:eu-repo/semantics/altIdentifier/issn/1225-4568info:eu-repo/semantics/altIdentifier/eissn/1598-6217info:eu-repo/grantAgreement/MICINN//BIA2010-20234-C03-02Tots els drets reservatsinfo:eu-repo/semantics/embargoedAccessoai:recercat.cat:10256/123472026-05-29T05:05:01Z
dc.title.none.fl_str_mv Modelling of tension-stiffening in bending RC elements based on equivalent stiffness of the rebar
title Modelling of tension-stiffening in bending RC elements based on equivalent stiffness of the rebar
spellingShingle Modelling of tension-stiffening in bending RC elements based on equivalent stiffness of the rebar
Torres Llinàs, Lluís
Assaigs de materials
Materials -- Testing
Resistència de materials
Strength of materials
Esforç i tensió
Strains and stresses
Formigó armat -- Proves
Reinforced concrete -- Testing
title_short Modelling of tension-stiffening in bending RC elements based on equivalent stiffness of the rebar
title_full Modelling of tension-stiffening in bending RC elements based on equivalent stiffness of the rebar
title_fullStr Modelling of tension-stiffening in bending RC elements based on equivalent stiffness of the rebar
title_full_unstemmed Modelling of tension-stiffening in bending RC elements based on equivalent stiffness of the rebar
title_sort Modelling of tension-stiffening in bending RC elements based on equivalent stiffness of the rebar
dc.creator.none.fl_str_mv Torres Llinàs, Lluís
Barris Peña, Cristina
Kaklauskas, Gintaris
Gribniak, Viktor
author Torres Llinàs, Lluís
author_facet Torres Llinàs, Lluís
Barris Peña, Cristina
Kaklauskas, Gintaris
Gribniak, Viktor
author_role author
author2 Barris Peña, Cristina
Kaklauskas, Gintaris
Gribniak, Viktor
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (Espanya)
dc.subject.none.fl_str_mv Assaigs de materials
Materials -- Testing
Resistència de materials
Strength of materials
Esforç i tensió
Strains and stresses
Formigó armat -- Proves
Reinforced concrete -- Testing
topic Assaigs de materials
Materials -- Testing
Resistència de materials
Strength of materials
Esforç i tensió
Strains and stresses
Formigó armat -- Proves
Reinforced concrete -- Testing
description The contribution of tensioned concrete between cracks (tension-stiffening) cannot be ignored when analysing deformation of reinforced concrete elements. The tension-stiffening effect is crucial when it comes to adequately estimating the load-deformation response of steel reinforced concrete and the more recently appeared fibre reinforced polymer (FRP) reinforced concrete. This paper presents a unified methodology for numerical modelling of the tension-stiffening effect in steel as well as FRP reinforced flexural members using the concept of equivalent deformation modulus and the smeared crack approach to obtain a modified stress-strain relation of the reinforcement. A closed-form solution for the equivalent secant modulus of deformation of the tensioned reinforcement is proposed for rectangular sections taking the Eurocode 2 curvature prediction technique as the reference. Using equations based on general principles of structural mechanics, the main influencing parameters are obtained. It is found that the ratio between the equivalent stiffness and the initial stiffness basically depends on the product of the modular ratio and reinforcement ratio (nρ), the effective-to-total depth ratio (d/h), and the level of loading. The proposed methodology is adequate for numerical modelling of tension-stiffening for different FRP and steel reinforcement, under both service and ultimate conditions. Comparison of the predicted and experimental data obtained by the authors indicates that the proposed methodology is capable to adequately model the tension-stiffening effect in beams reinforced with FRP or steel bars within wide range of loading
publishDate 2015
dc.date.none.fl_str_mv 2015
info
info
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10256/12347
http://hdl.handle.net/10256/12347
url http://hdl.handle.net/10256/12347
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.12989/sem.2015.53.5.997
info:eu-repo/semantics/altIdentifier/issn/1225-4568
info:eu-repo/semantics/altIdentifier/eissn/1598-6217
info:eu-repo/grantAgreement/MICINN//BIA2010-20234-C03-02
dc.rights.none.fl_str_mv Tots els drets reservats
info:eu-repo/semantics/embargoedAccess
rights_invalid_str_mv Tots els drets reservats
eu_rights_str_mv embargoedAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Techno-Press
publisher.none.fl_str_mv Techno-Press
dc.source.none.fl_str_mv © Structural Engineering and Mechanics, 2015, vol. 53, núm. 5, p. 997-1016
Articles publicats (D-EMCI)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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