Innovative Seismic Strengthening Techniques to Be Used in RC Beams’ Critical Zones

Detalhes bibliográficos
Autor(a) principal: Gião, Rita
Data de Publicação: 2022
Outros Autores: Lúcio, Válter, Chastre, Carlos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/150801
Resumo: Publisher Copyright: © 2022 by the authors.
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spelling Innovative Seismic Strengthening Techniques to Be Used in RC Beams’ Critical Zonescyclic experimental testfibre reinforced concretegravity loadjacketingpost-tensionRC beam critical zoneretrofitArchitectureCivil and Structural EngineeringBuilding and ConstructionPublisher Copyright: © 2022 by the authors.The seismic performance of a structural frame system can be enhanced by strengthening the RC beams’ critical zones. In this paper is presented an experimental study on the improvement of the beam behaviour, subjected to an alternative cyclic procedure which considers the gravity loads reflecting the real demands on the beams’ critical zone. Two strengthening solutions are presented: unbounded post-tension (PT) tendon strengthening to increase resistance and limit residual deformations, and unbounded post-tensioning with jacketing of the RC beam with unidirectional fibre mat reinforced grout (UFRG) to limit compression damage, improving section confinement, thus delaying concrete crushing and buckling of longitudinal reinforcement. The original UFRG material was developed within this study, to apply as a small thickness jacketing material for strengthening RC structures. The main idea was that the steadiness provided by preplacing continuous fibre mats into the mould reduced the fibres’ segregation tendency during the high-performance grout pouring and allowed for the optimisation of their percentage and alignment, attaining a higher tensile strength. The experimental response of the tested Specimens is presented and evaluated through performance parameters that are properly discussed and adjusted to the alternative cyclic procedure. Finally, theoretical predictions are presented, and an adjustable multilinear model is proposed to estimate the strengthening solution’s response.CERIS - Polo NOVADEC - Departamento de Engenharia CivilRUNGião, RitaLúcio, VálterChastre, Carlos2023-03-17T22:31:20Z2022-12-302022-12-30T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article20application/pdfhttp://hdl.handle.net/10362/150801engGião, R., Lúcio, V., & Chastre, C. (2022). Innovative Seismic Strengthening Techniques to Be Used in RC Beams’ Critical Zones. Buildings, 13(1), [95]. https://doi.org/10.3390/buildings130100952075-5309PURE: 56218327https://doi.org/10.3390/buildings13010095info: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:RCAAP2024-03-11T05:33:14Zoai:run.unl.pt:10362/150801Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:54:19.685880Repositório 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 Innovative Seismic Strengthening Techniques to Be Used in RC Beams’ Critical Zones
title Innovative Seismic Strengthening Techniques to Be Used in RC Beams’ Critical Zones
spellingShingle Innovative Seismic Strengthening Techniques to Be Used in RC Beams’ Critical Zones
Gião, Rita
cyclic experimental test
fibre reinforced concrete
gravity load
jacketing
post-tension
RC beam critical zone
retrofit
Architecture
Civil and Structural Engineering
Building and Construction
title_short Innovative Seismic Strengthening Techniques to Be Used in RC Beams’ Critical Zones
title_full Innovative Seismic Strengthening Techniques to Be Used in RC Beams’ Critical Zones
title_fullStr Innovative Seismic Strengthening Techniques to Be Used in RC Beams’ Critical Zones
title_full_unstemmed Innovative Seismic Strengthening Techniques to Be Used in RC Beams’ Critical Zones
title_sort Innovative Seismic Strengthening Techniques to Be Used in RC Beams’ Critical Zones
author Gião, Rita
author_facet Gião, Rita
Lúcio, Válter
Chastre, Carlos
author_role author
author2 Lúcio, Válter
Chastre, Carlos
author2_role author
author
dc.contributor.none.fl_str_mv CERIS - Polo NOVA
DEC - Departamento de Engenharia Civil
RUN
dc.contributor.author.fl_str_mv Gião, Rita
Lúcio, Válter
Chastre, Carlos
dc.subject.por.fl_str_mv cyclic experimental test
fibre reinforced concrete
gravity load
jacketing
post-tension
RC beam critical zone
retrofit
Architecture
Civil and Structural Engineering
Building and Construction
topic cyclic experimental test
fibre reinforced concrete
gravity load
jacketing
post-tension
RC beam critical zone
retrofit
Architecture
Civil and Structural Engineering
Building and Construction
description Publisher Copyright: © 2022 by the authors.
publishDate 2022
dc.date.none.fl_str_mv 2022-12-30
2022-12-30T00:00:00Z
2023-03-17T22:31:20Z
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/10362/150801
url http://hdl.handle.net/10362/150801
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Gião, R., Lúcio, V., & Chastre, C. (2022). Innovative Seismic Strengthening Techniques to Be Used in RC Beams’ Critical Zones. Buildings, 13(1), [95]. https://doi.org/10.3390/buildings13010095
2075-5309
PURE: 56218327
https://doi.org/10.3390/buildings13010095
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 20
application/pdf
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
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