Theoretical prediction of the punching shear strength of concrete flat slabs under in-plane tensile forces

RC slabs can be subjected simultaneously to transverse loads and in-plane tensile forces, as it happens in top slabs of continuous box girder bridges decks, in the regions of negative moments, or in flat slabs subjected to horizontal loads, produced by wind or earth pressure. Tensile forces can redu...

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Authors: Fernández Sánchez, Pablo Gonzalo|||0000-0002-8237-860X, Marí Bernat, Antonio Ricardo|||0000-0002-0994-0715, Oller Ibars, Eva|||0000-0002-0845-3587
Format: article
Publication Date:2021
Country:España
Institution:Universitat Politècnica de Catalunya (UPC)
Repository:UPCommons. Portal del coneixement obert de la UPC
Language:English
OAI Identifier:oai:upcommons.upc.edu:2117/335507
Online Access:https://hdl.handle.net/2117/335507
https://dx.doi.org/10.1016/j.engstruct.2020.111632
Access Level:Open access
Keyword:Reinforced concrete--Mechanical properties
Punching shear
Tension
Slabs
Mechanical model
Reinforced concrete
Yielding
Cracking
Formigó armat -- Propietats mecàniques
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
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network_acronym_str ES
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repository_id_str
spelling Theoretical prediction of the punching shear strength of concrete flat slabs under in-plane tensile forcesFernández Sánchez, Pablo Gonzalo|||0000-0002-8237-860XMarí Bernat, Antonio Ricardo|||0000-0002-0994-0715Oller Ibars, Eva|||0000-0002-0845-3587Reinforced concrete--Mechanical propertiesPunching shearTensionSlabsMechanical modelReinforced concreteYieldingCrackingFormigó armat -- Propietats mecàniquesÀrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigóRC slabs can be subjected simultaneously to transverse loads and in-plane tensile forces, as it happens in top slabs of continuous box girder bridges decks, in the regions of negative moments, or in flat slabs subjected to horizontal loads, produced by wind or earth pressure. Tensile forces can reduce the shear punching capacity of slabs. However, few studies have been carried out to quantify this effect. With this purpose, a mechanical model has been developed to capture the influence of in-plane tensile forces on the punching shear strength and verified with punching tests under different in-plane tensile load levels. The model, presented in this paper, consists of an extension of the Punching shear Compression Chord Capacity Model to account for the effects of tensile forces on the resisting actions. A linear reduction of the punching shear strength as a function of the external load applied has been obtained for moderate tensile forces, whereas high level of tensile forces may produce premature yielding of the reinforcement and further reduction of the punching shear strength. The proposed model accurately captures the available test results, including the effects of the premature yielding of reinforcement when the tensile force produces concrete cracking. In addition, predictions of punching-shear-tensile tests available in the literature were made with different theoretical models included in design codes, which yielded in general conservative results and showed high scatter.This work was developed in the framework of Research Project BIA-2015-64672-C4-1-R, financed by the Ministry of Economy and Competitiveness (MINECO) of Spain and the European Funds for Regional Development (FEDER). The authors want to thank Mr. José Romo, from FHECOR Engineering, for transmitting his experience in bridge design that helped to set the problem and to the director and technicians of the Structural Technology Laboratory of UPC, for their help in carrying out the experimental campaign.Peer ReviewedElsevier20212021-02-0120212021-01-19journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/335507https://dx.doi.org/10.1016/j.engstruct.2020.111632reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)InglésengMinisterio de Economía y Competitividad http://doi.org/10.13039/501100003329 BIA2015-64672-C4-1-R EVALUACION DE LA CAPACIDAD RESISTENTE FRENTE A ESFUERZOS TANGENTES DE ESTRUCTURAS DE HORMIGON MEDIANTE MODELOS MECANICOS PARA LA EXTENSION DE SU VIDA UTILopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttps://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3355072026-05-27T15:37:01Z
dc.title.none.fl_str_mv Theoretical prediction of the punching shear strength of concrete flat slabs under in-plane tensile forces
title Theoretical prediction of the punching shear strength of concrete flat slabs under in-plane tensile forces
spellingShingle Theoretical prediction of the punching shear strength of concrete flat slabs under in-plane tensile forces
Fernández Sánchez, Pablo Gonzalo|||0000-0002-8237-860X
Reinforced concrete--Mechanical properties
Punching shear
Tension
Slabs
Mechanical model
Reinforced concrete
Yielding
Cracking
Formigó armat -- Propietats mecàniques
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
title_short Theoretical prediction of the punching shear strength of concrete flat slabs under in-plane tensile forces
title_full Theoretical prediction of the punching shear strength of concrete flat slabs under in-plane tensile forces
title_fullStr Theoretical prediction of the punching shear strength of concrete flat slabs under in-plane tensile forces
title_full_unstemmed Theoretical prediction of the punching shear strength of concrete flat slabs under in-plane tensile forces
title_sort Theoretical prediction of the punching shear strength of concrete flat slabs under in-plane tensile forces
dc.creator.none.fl_str_mv Fernández Sánchez, Pablo Gonzalo|||0000-0002-8237-860X
Marí Bernat, Antonio Ricardo|||0000-0002-0994-0715
Oller Ibars, Eva|||0000-0002-0845-3587
author Fernández Sánchez, Pablo Gonzalo|||0000-0002-8237-860X
author_facet Fernández Sánchez, Pablo Gonzalo|||0000-0002-8237-860X
Marí Bernat, Antonio Ricardo|||0000-0002-0994-0715
Oller Ibars, Eva|||0000-0002-0845-3587
author_role author
author2 Marí Bernat, Antonio Ricardo|||0000-0002-0994-0715
Oller Ibars, Eva|||0000-0002-0845-3587
author2_role author
author
dc.subject.none.fl_str_mv Reinforced concrete--Mechanical properties
Punching shear
Tension
Slabs
Mechanical model
Reinforced concrete
Yielding
Cracking
Formigó armat -- Propietats mecàniques
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
topic Reinforced concrete--Mechanical properties
Punching shear
Tension
Slabs
Mechanical model
Reinforced concrete
Yielding
Cracking
Formigó armat -- Propietats mecàniques
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
description RC slabs can be subjected simultaneously to transverse loads and in-plane tensile forces, as it happens in top slabs of continuous box girder bridges decks, in the regions of negative moments, or in flat slabs subjected to horizontal loads, produced by wind or earth pressure. Tensile forces can reduce the shear punching capacity of slabs. However, few studies have been carried out to quantify this effect. With this purpose, a mechanical model has been developed to capture the influence of in-plane tensile forces on the punching shear strength and verified with punching tests under different in-plane tensile load levels. The model, presented in this paper, consists of an extension of the Punching shear Compression Chord Capacity Model to account for the effects of tensile forces on the resisting actions. A linear reduction of the punching shear strength as a function of the external load applied has been obtained for moderate tensile forces, whereas high level of tensile forces may produce premature yielding of the reinforcement and further reduction of the punching shear strength. The proposed model accurately captures the available test results, including the effects of the premature yielding of reinforcement when the tensile force produces concrete cracking. In addition, predictions of punching-shear-tensile tests available in the literature were made with different theoretical models included in design codes, which yielded in general conservative results and showed high scatter.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-02-01
2021
2021-01-19
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/2117/335507
https://dx.doi.org/10.1016/j.engstruct.2020.111632
url https://hdl.handle.net/2117/335507
https://dx.doi.org/10.1016/j.engstruct.2020.111632
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Economía y Competitividad http://doi.org/10.13039/501100003329 BIA2015-64672-C4-1-R EVALUACION DE LA CAPACIDAD RESISTENTE FRENTE A ESFUERZOS TANGENTES DE ESTRUCTURAS DE HORMIGON MEDIANTE MODELOS MECANICOS PARA LA EXTENSION DE SU VIDA UTIL
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
https://creativecommons.org/licenses/by-nc-nd/4.0/
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
Attribution-NonCommercial-NoDerivatives 4.0 International
https://creativecommons.org/licenses/by-nc-nd/4.0/
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: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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