Publicação
Unified model for fully and partially FRP confined circular and square concrete columns subjected to axial compression
| Resumo: | Even though the usage of Fiber-reinforced polymer (FRP) full confinement arrangement is a more reliable and efficient strengthening technique than a partially confining strategy, it might not be cost-effective in real cases of strengthening. Experimental researches have demonstrated that confinement strengthening strategy is more effective for the case of circular columns compared to its application on square columns. This paper is dedicated to introducing a new unified model for determining the concrete confinement characteristics of FRP fully/ partially confined circular/square concrete columns subjected to axial compressive loading. Through unification, the variations of the key parameters can be evaluated more-widely based on a unified mathematical framework. Consequently, it leads to the continuity in the predictions of FRP confinement-induced improvements for the different types of columns, contrary to those obtained from models only applicable to a specified cross-section or confining system. The substantial influence of non-homogenous concrete expansion distribution at the horizontal and vertical directions is taken into account in the determination of confinement pressure, besides arching action, by following the concept of confinement efficiency factor. Since the confinement-induced improvement is a function of its confining stress path, a new methodology is proposed to predict global axial stress–strain relation of FRP confined concrete columns considering confinement path effect, based on an extensive set of experimental results including 418 test specimens. The predictive performance of the developed model is assessed by simulating experimental tests reported in the literature. |
|---|---|
| Autores principais: | Shayanfar, Javad |
| Outros Autores: | Barros, Joaquim A. O.; Rezazadeh, Mohammadali |
| Assunto: | FRP confined concrete Full confinement Partial confinement Square section Unified model |
| Ano: | 2022 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| _version_ | 1864251792785670144 |
|---|---|
| author | Shayanfar, Javad |
| author2 | Barros, Joaquim A. O. Rezazadeh, Mohammadali |
| author2_role | author author |
| author_facet | Shayanfar, Javad Barros, Joaquim A. O. Rezazadeh, Mohammadali |
| author_role | author |
| contributor_name_str_mv | Universidade do Minho |
| country_str | PT |
| creators_json_str | [{\"Person.name\":\"Shayanfar, Javad\"},{\"Person.name\":\"Barros, Joaquim A. O.\"},{\"Person.name\":\"Rezazadeh, Mohammadali\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | Universidade do Minho |
| datacite.creators.creator.creatorName.fl_str_mv | Shayanfar, Javad Barros, Joaquim A. O. Rezazadeh, Mohammadali |
| datacite.date.Accepted.fl_str_mv | 2022-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2023-01-16T16:17:17Z |
| datacite.date.embargoed.fl_str_mv | 2023-01-16T16:17:17Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | FRP confined concrete Full confinement Partial confinement Square section Unified model |
| datacite.titles.title.fl_str_mv | Unified model for fully and partially FRP confined circular and square concrete columns subjected to axial compression |
| dc.contributor.none.fl_str_mv | Universidade do Minho |
| dc.creator.none.fl_str_mv | Shayanfar, Javad Barros, Joaquim A. O. Rezazadeh, Mohammadali |
| dc.date.Accepted.fl_str_mv | 2022-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2023-01-16T16:17:17Z |
| dc.date.embargoed.fl_str_mv | 2023-01-16T16:17:17Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/1822/81888 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | FRP confined concrete Full confinement Partial confinement Square section Unified model |
| dc.title.fl_str_mv | Unified model for fully and partially FRP confined circular and square concrete columns subjected to axial compression |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | Even though the usage of Fiber-reinforced polymer (FRP) full confinement arrangement is a more reliable and efficient strengthening technique than a partially confining strategy, it might not be cost-effective in real cases of strengthening. Experimental researches have demonstrated that confinement strengthening strategy is more effective for the case of circular columns compared to its application on square columns. This paper is dedicated to introducing a new unified model for determining the concrete confinement characteristics of FRP fully/ partially confined circular/square concrete columns subjected to axial compressive loading. Through unification, the variations of the key parameters can be evaluated more-widely based on a unified mathematical framework. Consequently, it leads to the continuity in the predictions of FRP confinement-induced improvements for the different types of columns, contrary to those obtained from models only applicable to a specified cross-section or confining system. The substantial influence of non-homogenous concrete expansion distribution at the horizontal and vertical directions is taken into account in the determination of confinement pressure, besides arching action, by following the concept of confinement efficiency factor. Since the confinement-induced improvement is a function of its confining stress path, a new methodology is proposed to predict global axial stress–strain relation of FRP confined concrete columns considering confinement path effect, based on an extensive set of experimental results including 418 test specimens. The predictive performance of the developed model is assessed by simulating experimental tests reported in the literature. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | article |
| fulltext.url.fl_str_mv | https://prod-dspace.uminho.pt/bitstreams/f29d1418-ff69-457a-bf3a-4967d773c5b5/download |
| id | rum_973cd5a3c46356900a66f3e52ef9c3a0 |
| identifier.url.fl_str_mv | https://hdl.handle.net/1822/81888 |
| instacron_str | repositorium |
| institution | Universidade do Minho |
| instname_str | Universidade do Minho |
| language | eng |
| network_acronym_str | rum |
| network_name_str | RepositóriUM - Universidade do Minho |
| oai_identifier_str | oai:repositorium.uminho.pt:1822/81888 |
| organization_str_mv | urn:organizationAcronym:repositorium |
| person_str_mv | Shayanfar, Javad Barros, Joaquim A. O. Rezazadeh, Mohammadali |
| publishDate | 2022 |
| publisher.none.fl_str_mv | Elsevier |
| reponame_str | RepositóriUM - Universidade do Minho |
| repository_id_str | urn:repositoryAcronym:rum |
| service_str_mv | urn:repositoryAcronym:rum |
| spelling | engElsevierporEven though the usage of Fiber-reinforced polymer (FRP) full confinement arrangement is a more reliable and efficient strengthening technique than a partially confining strategy, it might not be cost-effective in real cases of strengthening. Experimental researches have demonstrated that confinement strengthening strategy is more effective for the case of circular columns compared to its application on square columns. This paper is dedicated to introducing a new unified model for determining the concrete confinement characteristics of FRP fully/ partially confined circular/square concrete columns subjected to axial compressive loading. Through unification, the variations of the key parameters can be evaluated more-widely based on a unified mathematical framework. Consequently, it leads to the continuity in the predictions of FRP confinement-induced improvements for the different types of columns, contrary to those obtained from models only applicable to a specified cross-section or confining system. The substantial influence of non-homogenous concrete expansion distribution at the horizontal and vertical directions is taken into account in the determination of confinement pressure, besides arching action, by following the concept of confinement efficiency factor. Since the confinement-induced improvement is a function of its confining stress path, a new methodology is proposed to predict global axial stress–strain relation of FRP confined concrete columns considering confinement path effect, based on an extensive set of experimental results including 418 test specimens. The predictive performance of the developed model is assessed by simulating experimental tests reported in the literature.application/pdfporUnified model for fully and partially FRP confined circular and square concrete columns subjected to axial compressionShayanfar, JavadBarros, Joaquim A. O.Rezazadeh, MohammadaliHostingInstitutionOrganizationalUniversidade do Minhoe-mailmailto:repositorium@usdb.uminho.ptrepositorium@usdb.uminho.ptISSNIsPartOf0141-0296DOIIsPartOf10.1016/j.engstruct.2021.1133552023-01-16T16:17:17Z20222022-01-01T00:00:00ZHandlehttps://hdl.handle.net/1822/81888http://purl.org/coar/access_right/c_abf2open accessFRP confined concreteFull confinementPartial confinementSquare sectionUnified model2724277 bytesliteraturehttp://purl.org/coar/resource_type/c_6501journal articlehttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://prod-dspace.uminho.pt/bitstreams/f29d1418-ff69-457a-bf3a-4967d773c5b5/download |
| spellingShingle | Unified model for fully and partially FRP confined circular and square concrete columns subjected to axial compression Shayanfar, Javad FRP confined concrete Full confinement Partial confinement Square section Unified model |
| subject.fl_str_mv | FRP confined concrete Full confinement Partial confinement Square section Unified model |
| title | Unified model for fully and partially FRP confined circular and square concrete columns subjected to axial compression |
| title_full | Unified model for fully and partially FRP confined circular and square concrete columns subjected to axial compression |
| title_fullStr | Unified model for fully and partially FRP confined circular and square concrete columns subjected to axial compression |
| title_full_unstemmed | Unified model for fully and partially FRP confined circular and square concrete columns subjected to axial compression |
| title_short | Unified model for fully and partially FRP confined circular and square concrete columns subjected to axial compression |
| title_sort | Unified model for fully and partially FRP confined circular and square concrete columns subjected to axial compression |
| topic | FRP confined concrete Full confinement Partial confinement Square section Unified model |
| topic_facet | FRP confined concrete Full confinement Partial confinement Square section Unified model |
| url | https://hdl.handle.net/1822/81888 |
| visible | 1 |