Stress–strain model for FRP confined heat-damaged concrete columns
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/1822/88654 |
Resumo: | This paper is dedicated to the development of a new analysis-oriented model to simulate the axial and dilation behavior of FRP confined heat-damaged concrete columns under axial compressive loading. The model’s calibration has considered the experimental results from concrete circular/square cross-section specimens submitted to a certain level of heat-induced damage, which after attained the environmental temperature, were fully confined with FRP jacket and tested. New equations were developed to determine the mechanical characteristics of unconfined heat-damaged concrete by performing regression analysis on a large database of experimental tests. Based on a parametric study on dilation behavior of FRP confined heat-damaged columns, a new dilation model was developed to predict concrete lateral strain at a given axial strain, dependent on the thermal damage level. By using this dilation model, a new methodology was introduced for predicting the axial stress-strain response of FRP confined heat-damaged columns in compliance with the active confinement approach. The adequate predictive performance of the model is demonstrated by estimating experimental axial stress-strain results. |
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Stress–strain model for FRP confined heat-damaged concrete columnsFRP confined heat-damaged concreteThermal damageConfinement modelDilation behaviorEngenharia e Tecnologia::Engenharia CivilScience & TechnologyThis paper is dedicated to the development of a new analysis-oriented model to simulate the axial and dilation behavior of FRP confined heat-damaged concrete columns under axial compressive loading. The model’s calibration has considered the experimental results from concrete circular/square cross-section specimens submitted to a certain level of heat-induced damage, which after attained the environmental temperature, were fully confined with FRP jacket and tested. New equations were developed to determine the mechanical characteristics of unconfined heat-damaged concrete by performing regression analysis on a large database of experimental tests. Based on a parametric study on dilation behavior of FRP confined heat-damaged columns, a new dilation model was developed to predict concrete lateral strain at a given axial strain, dependent on the thermal damage level. By using this dilation model, a new methodology was introduced for predicting the axial stress-strain response of FRP confined heat-damaged columns in compliance with the active confinement approach. The adequate predictive performance of the model is demonstrated by estimating experimental axial stress-strain results.This study is a part of the project ‘‘StreColesf_Innovative technique using effectively composite materials for the strengthening of rectangular cross-section reinforced concrete columns exposed to seismic loadings and fire’‘, with the reference POCI-01-0145-FEDER-029485. The first author also acknowledges the support provided by FCT PhD individual fellowship 2019 with the reference of “SFRH/BD/148002/2019”.ElsevierUniversidade do MinhoShayanfar, JavadBarros, Joaquim A. O.Rezazadeh, Mohammadali20232023-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/88654eng0379-71121873-722610.1016/j.firesaf.2023.103748https://www.sciencedirect.com/science/article/pii/S0379711223000164info: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:RCAAP2024-02-10T01:20:15Zoai:repositorium.sdum.uminho.pt:1822/88654Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:37:10.524966Repositório 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 |
Stress–strain model for FRP confined heat-damaged concrete columns |
title |
Stress–strain model for FRP confined heat-damaged concrete columns |
spellingShingle |
Stress–strain model for FRP confined heat-damaged concrete columns Shayanfar, Javad FRP confined heat-damaged concrete Thermal damage Confinement model Dilation behavior Engenharia e Tecnologia::Engenharia Civil Science & Technology |
title_short |
Stress–strain model for FRP confined heat-damaged concrete columns |
title_full |
Stress–strain model for FRP confined heat-damaged concrete columns |
title_fullStr |
Stress–strain model for FRP confined heat-damaged concrete columns |
title_full_unstemmed |
Stress–strain model for FRP confined heat-damaged concrete columns |
title_sort |
Stress–strain model for FRP confined heat-damaged concrete columns |
author |
Shayanfar, Javad |
author_facet |
Shayanfar, Javad Barros, Joaquim A. O. Rezazadeh, Mohammadali |
author_role |
author |
author2 |
Barros, Joaquim A. O. Rezazadeh, Mohammadali |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Shayanfar, Javad Barros, Joaquim A. O. Rezazadeh, Mohammadali |
dc.subject.por.fl_str_mv |
FRP confined heat-damaged concrete Thermal damage Confinement model Dilation behavior Engenharia e Tecnologia::Engenharia Civil Science & Technology |
topic |
FRP confined heat-damaged concrete Thermal damage Confinement model Dilation behavior Engenharia e Tecnologia::Engenharia Civil Science & Technology |
description |
This paper is dedicated to the development of a new analysis-oriented model to simulate the axial and dilation behavior of FRP confined heat-damaged concrete columns under axial compressive loading. The model’s calibration has considered the experimental results from concrete circular/square cross-section specimens submitted to a certain level of heat-induced damage, which after attained the environmental temperature, were fully confined with FRP jacket and tested. New equations were developed to determine the mechanical characteristics of unconfined heat-damaged concrete by performing regression analysis on a large database of experimental tests. Based on a parametric study on dilation behavior of FRP confined heat-damaged columns, a new dilation model was developed to predict concrete lateral strain at a given axial strain, dependent on the thermal damage level. By using this dilation model, a new methodology was introduced for predicting the axial stress-strain response of FRP confined heat-damaged columns in compliance with the active confinement approach. The adequate predictive performance of the model is demonstrated by estimating experimental axial stress-strain results. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023 2023-01-01T00:00:00Z |
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/1822/88654 |
url |
https://hdl.handle.net/1822/88654 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0379-7112 1873-7226 10.1016/j.firesaf.2023.103748 https://www.sciencedirect.com/science/article/pii/S0379711223000164 |
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: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 |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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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 |
repository.mail.fl_str_mv |
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1799137422939783168 |