Comportamento estrutural de pilares mistos tubulares circulares submetidos à flexo-compressão
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| Autor Principal: | |
|---|---|
| Data de Publicación: | 2021 |
| Formato: | Master thesis |
| Idioma: | por |
| Fonte: | Repositório Institucional da UPF |
| Download full: | https://repositorio.upf.br/handle/123456789/2671 |
Summary: | Steel-concrete composite columns have many advantages over steel columns and reinforced concrete columns due to their high compressive strength, because the occurrence of local buckling in the steel tube is reduced due to the restriction caused by the concrete to the steel tube, and likewise, due to the ductility of the concrete caused by the confinement effect caused by the steel tube. Steel-concrete composite columns that use tubular sections are advantageous because their aesthetic appearance and advanced mechanical performance. When tubular section is circular, there is a gain in the confinement effect when compared to other sections. Several studies investigated the behavior of concrete filled steel tube (CFST), submitted to concentric force. However, when a column is subjected to an eccentric force, it has been noticed a loss in the confinement effect, caused by the increase of the curvature in the length of the cross-sectional session. In this case, the structural design is affected by the interaction between axial forces and bending moments. This study presents an analysis of 557 circular CFST submitted to concentric axial load and 274 circular CFST submitted to eccentric axial load, experimentally tested, obtained through bibliography. The influence of parameters: global slenderness index, local slenderness index, steel yield strength, concrete compressive strength and eccentricity index; was investigated under the structural behavior of circular tubular composite columns. The results were evaluated using performance indices: strength index, confinement factor and concrete contribution index. A numerical analysis was developed using the Finite Element (FE) method and Ansys Mechanical APDL Software, including composite columns with high strength steel and ultra high strength concrete, with satisfactory results. A statistical approach was carried out evaluating the parameters that exert the major influence on a wide range of composite columns, indicating that eccentricity is the most significant factor on the performance of circular CFST. A statistical approach was carried out to evaluate the parameters that have a major influence on the behavior of composite columns, indicating that eccentricity is the most significant factor affecting the performance of circular CFST. |
| _version_ | 1871607649299070976 |
|---|---|
| author | Santini, Ândrey Teston |
| author_browse | Santini, Ândrey Teston |
| author_facet | Santini, Ândrey Teston |
| author_role | author |
| collection | Repositório Institucional da UPF |
| dc.contributor.author.fl_str_mv | Santini, Ândrey Teston |
| dc.contributor.none.fl_str_mv | Ramires, Fernando Busato http://lattes.cnpq.br/0105458020976760 |
| dc.date.none.fl_str_mv | 2021-04-19 2025-05-07T14:28:46Z |
| dc.format.none.fl_str_mv | application/pdf application/pdf |
| dc.identifier.uri.fl_str_mv | SANTINI, Ândrey Teston. Comportamento estrutural de pilares mistos tubulares circulares submetidos à flexo-compressão. 2021. 286 f. Dissertação (Mestrado em Engenharia) - Universidade de Passo Fundo, Passo Fundo, RS, 2021. https://repositorio.upf.br/handle/123456789/2671 |
| dc.language.iso.fl_str_mv | por |
| dc.publisher.none.fl_str_mv | Universidade de Passo Fundo Faculdade de Engenharia e Arquitetura – FEAR Brasil UPF Programa de Pós-Graduação em Engenharia Civil e Ambiental |
| dc.rights.driver.fl_str_mv | info:eu-repo/semantics/openAccess |
| dc.source.none.fl_str_mv | reponame:Repositório Institucional da UPF instname:Universidade de Passo Fundo (UPF) instacron:UPF |
| dc.subject.por.fl_str_mv | Aço - Estruturas Concreto armado Método dos elementos finitos ENGENHARIAS::ENGENHARIA CIVIL |
| dc.title.none.fl_str_mv | Comportamento estrutural de pilares mistos tubulares circulares submetidos à flexo-compressão |
| dc.type.driver.fl_str_mv | info:eu-repo/semantics/masterThesis |
| dc.type.status.fl_str_mv | info:eu-repo/semantics/publishedVersion |
| description | Steel-concrete composite columns have many advantages over steel columns and reinforced concrete columns due to their high compressive strength, because the occurrence of local buckling in the steel tube is reduced due to the restriction caused by the concrete to the steel tube, and likewise, due to the ductility of the concrete caused by the confinement effect caused by the steel tube. Steel-concrete composite columns that use tubular sections are advantageous because their aesthetic appearance and advanced mechanical performance. When tubular section is circular, there is a gain in the confinement effect when compared to other sections. Several studies investigated the behavior of concrete filled steel tube (CFST), submitted to concentric force. However, when a column is subjected to an eccentric force, it has been noticed a loss in the confinement effect, caused by the increase of the curvature in the length of the cross-sectional session. In this case, the structural design is affected by the interaction between axial forces and bending moments. This study presents an analysis of 557 circular CFST submitted to concentric axial load and 274 circular CFST submitted to eccentric axial load, experimentally tested, obtained through bibliography. The influence of parameters: global slenderness index, local slenderness index, steel yield strength, concrete compressive strength and eccentricity index; was investigated under the structural behavior of circular tubular composite columns. The results were evaluated using performance indices: strength index, confinement factor and concrete contribution index. A numerical analysis was developed using the Finite Element (FE) method and Ansys Mechanical APDL Software, including composite columns with high strength steel and ultra high strength concrete, with satisfactory results. A statistical approach was carried out evaluating the parameters that exert the major influence on a wide range of composite columns, indicating that eccentricity is the most significant factor on the performance of circular CFST. A statistical approach was carried out to evaluate the parameters that have a major influence on the behavior of composite columns, indicating that eccentricity is the most significant factor affecting the performance of circular CFST. |
| eu_rights_str_mv | openAccess |
| format | masterThesis |
| id | UPF_f5e3116c0fbc7c8221fe2f7ec6e6a9cc |
| identifier_str_mv | SANTINI, Ândrey Teston. Comportamento estrutural de pilares mistos tubulares circulares submetidos à flexo-compressão. 2021. 286 f. Dissertação (Mestrado em Engenharia) - Universidade de Passo Fundo, Passo Fundo, RS, 2021. |
| instacron_str | UPF |
| institution | UPF |
| instname_str | Universidade de Passo Fundo (UPF) |
| language | por |
| network_acronym_str | UPF |
| network_name_str | Repositório Institucional da UPF |
| oai_identifier_str | oai:repositorio.upf.br:123456789/2671 |
| publishDate | 2021 |
| publishDateSort | 2021 |
| publisher.none.fl_str_mv | Universidade de Passo Fundo Faculdade de Engenharia e Arquitetura – FEAR Brasil UPF Programa de Pós-Graduação em Engenharia Civil e Ambiental |
| reponame_str | Repositório Institucional da UPF |
| repository.mail.fl_str_mv | jucelei@upf.br||biblio@upf.br |
| repository.name.fl_str_mv | Repositório Institucional da UPF - Universidade de Passo Fundo (UPF) |
| repository_id_str | 1610 |
| spelling | Comportamento estrutural de pilares mistos tubulares circulares submetidos à flexo-compressãoAço - EstruturasConcreto armadoMétodo dos elementos finitosENGENHARIAS::ENGENHARIA CIVILSteel-concrete composite columns have many advantages over steel columns and reinforced concrete columns due to their high compressive strength, because the occurrence of local buckling in the steel tube is reduced due to the restriction caused by the concrete to the steel tube, and likewise, due to the ductility of the concrete caused by the confinement effect caused by the steel tube. Steel-concrete composite columns that use tubular sections are advantageous because their aesthetic appearance and advanced mechanical performance. When tubular section is circular, there is a gain in the confinement effect when compared to other sections. Several studies investigated the behavior of concrete filled steel tube (CFST), submitted to concentric force. However, when a column is subjected to an eccentric force, it has been noticed a loss in the confinement effect, caused by the increase of the curvature in the length of the cross-sectional session. In this case, the structural design is affected by the interaction between axial forces and bending moments. This study presents an analysis of 557 circular CFST submitted to concentric axial load and 274 circular CFST submitted to eccentric axial load, experimentally tested, obtained through bibliography. The influence of parameters: global slenderness index, local slenderness index, steel yield strength, concrete compressive strength and eccentricity index; was investigated under the structural behavior of circular tubular composite columns. The results were evaluated using performance indices: strength index, confinement factor and concrete contribution index. A numerical analysis was developed using the Finite Element (FE) method and Ansys Mechanical APDL Software, including composite columns with high strength steel and ultra high strength concrete, with satisfactory results. A statistical approach was carried out evaluating the parameters that exert the major influence on a wide range of composite columns, indicating that eccentricity is the most significant factor on the performance of circular CFST. A statistical approach was carried out to evaluate the parameters that have a major influence on the behavior of composite columns, indicating that eccentricity is the most significant factor affecting the performance of circular CFST.Pilares mistos possuem muitas vantagens em relação aos pilares de aço e pilares de concreto armado devido a sua alta resistência à compressão, porque a ocorrência de instabilidades locais no tubo de aço é reduzida devido à restrição provocada pelo concreto ao tubo de aço, e de mesmo modo, pela ductilidade do concreto causada pelo efeito de confinamento provocado pelo tubo de aço. Pilares mistos formados por seções tubulares apresentam vantagens devido a sua aparência estética e seu desempenho mecânico avançado. Quando esta seção tubular é circular, há um ganho no efeito de confinamento quando comparado a outras seções. Apesar de pilares mistos tubulares circulares serem utilizados para resistir a variados esforços como compressão, flexão e torção, existe um vasto número de estudos avaliando modelos submetidos à força axial concêntrica. No entanto, quando um pilar está sujeito a forças aplicadas com excentricidade, há notável perda do estado de confinamento causado pelo aumento da curvatura ao longo da seção transversal. O dimensionamento neste caso é afetado pela interação entre força axial e momentos fletores. Esta pesquisa, analisou 557 pilares mistos tubulares circulares sob força axial concêntrica e 274 pilares mistos tubulares circulares sob força axial excêntrica, ensaiados experimentalmente, obtidos através da bibliografia disponível. A influência dos parâmetros: índices de esbeltez global, índice de esbeltez local, tensão de escoamento do aço, resistência à compressão do concreto e índice de excentricidade; foi investigada sob o comportamento estrutural de pilares mistos tubulares circulares. Os resultados foram avaliados através de índices de desempenho: índice de resistência, fator de confinamento e índice de contribuição do concreto. Um modelo numérico foi desenvolvido com o auxílio do Software Ansys Mechanical APDL e comparado com 126 exemplares experimentais, incluindo pilares com aço de alta resistência e concreto de ultra resistência, apresentando resultados satisfatórios. Um planejamento estatístico foi realizado avaliando os parâmetros que exercem maior influência sobre o comportamento de pilares mistos, indicando que a excentricidade é o fator mais significativo sobre o desempenho de um pilar misto tubular circular.Universidade de Passo FundoFaculdade de Engenharia e Arquitetura – FEARBrasilUPFPrograma de Pós-Graduação em Engenharia Civil e AmbientalRamires, Fernando Busatohttp://lattes.cnpq.br/0105458020976760Santini, Ândrey Teston2025-05-07T14:28:46Z2021-04-19info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfapplication/pdfSANTINI, Ândrey Teston. Comportamento estrutural de pilares mistos tubulares circulares submetidos à flexo-compressão. 2021. 286 f. Dissertação (Mestrado em Engenharia) - Universidade de Passo Fundo, Passo Fundo, RS, 2021.https://repositorio.upf.br/handle/123456789/2671porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UPFinstname:Universidade de Passo Fundo (UPF)instacron:UPF2025-12-30T20:08:17Zoai:repositorio.upf.br:123456789/2671Repositório InstitucionalPRIhttp://repositorio.upf.br/oai/requestjucelei@upf.br||biblio@upf.bropendoar:16102025-12-30T20:08:17Repositório Institucional da UPF - Universidade de Passo Fundo (UPF) |
| spellingShingle | Comportamento estrutural de pilares mistos tubulares circulares submetidos à flexo-compressão Santini, Ândrey Teston Aço - Estruturas Concreto armado Método dos elementos finitos ENGENHARIAS::ENGENHARIA CIVIL |
| status_str | publishedVersion |
| title | Comportamento estrutural de pilares mistos tubulares circulares submetidos à flexo-compressão |
| title_full | Comportamento estrutural de pilares mistos tubulares circulares submetidos à flexo-compressão |
| title_fullStr | Comportamento estrutural de pilares mistos tubulares circulares submetidos à flexo-compressão |
| title_full_unstemmed | Comportamento estrutural de pilares mistos tubulares circulares submetidos à flexo-compressão |
| title_short | Comportamento estrutural de pilares mistos tubulares circulares submetidos à flexo-compressão |
| title_sort | Comportamento estrutural de pilares mistos tubulares circulares submetidos à flexo-compressão |
| topic | Aço - Estruturas Concreto armado Método dos elementos finitos ENGENHARIAS::ENGENHARIA CIVIL |
| url | https://repositorio.upf.br/handle/123456789/2671 |