ANÁLISE COMPUTACIONAL DA ESTABILIDADE DE PILARES EM CONCRETO ARMADO SUBMETIDOS À FLEXÃO COMPOSTA OBLÍQUA
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Revista Interdisciplinar de Pesquisa em Engenharia |
Texto Completo: | https://periodicos.unb.br/index.php/ripe/article/view/21014 |
Resumo: | Stability analysis of reinforced concrete columns using tables and abacuses often lacks accuracy and leads to more robust structures, with a higher consumption of material (concrete and steel rebars). On the other hand, there are more accurate procedures that derive from detailed models, optimizing the design at the cost of a large number of iterative operations and processes that are not feasible without the use of computers. This paper presents the steps involved in developing a computer code to verify the stability analysis of reinforced concrete columns subjected to axial forces and biaxial bending through computational routines. The computer codes were developed in Matlab, including physical and geometrical nonlinearities, and can be divided into two major parts: (1) characterized by cross section analysis, which is divided into sub-regions for numerical integration, and by varying curvature and neutral axis slope and depth, resistant internal forces and strains are evaluated; (2) a global stability analysis of the structure, where the column is segmented along its height and for each section between the elements a routine evaluates the curvature at equilibrium. The updated deflection is obtained by double curvature integration and provides an additional eccentricity which is added to the initial results into a new iteration. The process is repeated until a convergence criterion is reached or column failure, and thus the final internal forces are computed. The proposed routine results were validated by experimental analysis and finite element simulations with commercial codes Athena and Midas, confirming the validity and efficiency of the present proposal. |
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ANÁLISE COMPUTACIONAL DA ESTABILIDADE DE PILARES EM CONCRETO ARMADO SUBMETIDOS À FLEXÃO COMPOSTA OBLÍQUAReinforced concrete columns. Biaxial bending. Stability. Nonlinear. Computational.Stability analysis of reinforced concrete columns using tables and abacuses often lacks accuracy and leads to more robust structures, with a higher consumption of material (concrete and steel rebars). On the other hand, there are more accurate procedures that derive from detailed models, optimizing the design at the cost of a large number of iterative operations and processes that are not feasible without the use of computers. This paper presents the steps involved in developing a computer code to verify the stability analysis of reinforced concrete columns subjected to axial forces and biaxial bending through computational routines. The computer codes were developed in Matlab, including physical and geometrical nonlinearities, and can be divided into two major parts: (1) characterized by cross section analysis, which is divided into sub-regions for numerical integration, and by varying curvature and neutral axis slope and depth, resistant internal forces and strains are evaluated; (2) a global stability analysis of the structure, where the column is segmented along its height and for each section between the elements a routine evaluates the curvature at equilibrium. The updated deflection is obtained by double curvature integration and provides an additional eccentricity which is added to the initial results into a new iteration. The process is repeated until a convergence criterion is reached or column failure, and thus the final internal forces are computed. The proposed routine results were validated by experimental analysis and finite element simulations with commercial codes Athena and Midas, confirming the validity and efficiency of the present proposal.Stability analysis of reinforced concrete columns using tables and abacuses often lacks accuracy and leads to more robust structures, with a higher consumption of material (concrete and steel rebars). On the other hand, there are more accurate procedures that derive from detailed models, optimizing the design at the cost of a large number of iterative operations and processes that are not feasible without the use of computers. This paper presents the steps involved in developing a computer code to verify the stability analysis of reinforced concrete columns subjected to axial forces and biaxial bending through computational routines. The computer codes were developed in Matlab, including physical and geometrical nonlinearities, and can be divided into two major parts: (1) characterized by cross section analysis, which is divided into sub-regions for numerical integration, and by varying curvature and neutral axis slope and depth, resistant internal forces and strains are evaluated; (2) a global stability analysis of the structure, where the column is segmented along its height and for each section between the elements a routine evaluates the curvature at equilibrium. The updated deflection is obtained by double curvature integration and provides an additional eccentricity which is added to the initial results into a new iteration. The process is repeated until a convergence criterion is reached or column failure, and thus the final internal forces are computed. The proposed routine results were validated by experimental analysis and finite element simulations with commercial codes Athena and Midas, confirming the validity and efficiency of the present proposal.Programa de Pós-Graduação em Integridade de Materiais da Engenharia2017-02-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.unb.br/index.php/ripe/article/view/2101410.26512/ripe.v2i24.21014Revista Interdisciplinar de Pesquisa em Engenharia; Vol. 2 No. 24 (2016): NUMERICAL METHODS APPLIED TO STRUCTURAL DESIGN (II); 64-85Revista Interdisciplinar de Pesquisa em Engenharia; v. 2 n. 24 (2016): NUMERICAL METHODS APPLIED TO STRUCTURAL DESIGN (II); 64-852447-6102reponame:Revista Interdisciplinar de Pesquisa em Engenhariainstname:Universidade de Brasília (UnB)instacron:UNBporhttps://periodicos.unb.br/index.php/ripe/article/view/21014/19352Copyright (c) 2018 Revista Interdisciplinar de Pesquisa em Engenharia - RIPEinfo:eu-repo/semantics/openAccessFreire, Ricardo Gomes DuarteRibeiro, Paulo Marcelo VieiraMelo, Carlos Eduardo Luna de2019-06-16T19:38:06Zoai:ojs.pkp.sfu.ca:article/21014Revistahttps://periodicos.unb.br/index.php/ripePUBhttps://periodicos.unb.br/index.php/ripe/oaianflor@unb.br2447-61022447-6102opendoar:2019-06-16T19:38:06Revista Interdisciplinar de Pesquisa em Engenharia - Universidade de Brasília (UnB)false |
dc.title.none.fl_str_mv |
ANÁLISE COMPUTACIONAL DA ESTABILIDADE DE PILARES EM CONCRETO ARMADO SUBMETIDOS À FLEXÃO COMPOSTA OBLÍQUA |
title |
ANÁLISE COMPUTACIONAL DA ESTABILIDADE DE PILARES EM CONCRETO ARMADO SUBMETIDOS À FLEXÃO COMPOSTA OBLÍQUA |
spellingShingle |
ANÁLISE COMPUTACIONAL DA ESTABILIDADE DE PILARES EM CONCRETO ARMADO SUBMETIDOS À FLEXÃO COMPOSTA OBLÍQUA Freire, Ricardo Gomes Duarte Reinforced concrete columns. Biaxial bending. Stability. Nonlinear. Computational. |
title_short |
ANÁLISE COMPUTACIONAL DA ESTABILIDADE DE PILARES EM CONCRETO ARMADO SUBMETIDOS À FLEXÃO COMPOSTA OBLÍQUA |
title_full |
ANÁLISE COMPUTACIONAL DA ESTABILIDADE DE PILARES EM CONCRETO ARMADO SUBMETIDOS À FLEXÃO COMPOSTA OBLÍQUA |
title_fullStr |
ANÁLISE COMPUTACIONAL DA ESTABILIDADE DE PILARES EM CONCRETO ARMADO SUBMETIDOS À FLEXÃO COMPOSTA OBLÍQUA |
title_full_unstemmed |
ANÁLISE COMPUTACIONAL DA ESTABILIDADE DE PILARES EM CONCRETO ARMADO SUBMETIDOS À FLEXÃO COMPOSTA OBLÍQUA |
title_sort |
ANÁLISE COMPUTACIONAL DA ESTABILIDADE DE PILARES EM CONCRETO ARMADO SUBMETIDOS À FLEXÃO COMPOSTA OBLÍQUA |
author |
Freire, Ricardo Gomes Duarte |
author_facet |
Freire, Ricardo Gomes Duarte Ribeiro, Paulo Marcelo Vieira Melo, Carlos Eduardo Luna de |
author_role |
author |
author2 |
Ribeiro, Paulo Marcelo Vieira Melo, Carlos Eduardo Luna de |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Freire, Ricardo Gomes Duarte Ribeiro, Paulo Marcelo Vieira Melo, Carlos Eduardo Luna de |
dc.subject.por.fl_str_mv |
Reinforced concrete columns. Biaxial bending. Stability. Nonlinear. Computational. |
topic |
Reinforced concrete columns. Biaxial bending. Stability. Nonlinear. Computational. |
description |
Stability analysis of reinforced concrete columns using tables and abacuses often lacks accuracy and leads to more robust structures, with a higher consumption of material (concrete and steel rebars). On the other hand, there are more accurate procedures that derive from detailed models, optimizing the design at the cost of a large number of iterative operations and processes that are not feasible without the use of computers. This paper presents the steps involved in developing a computer code to verify the stability analysis of reinforced concrete columns subjected to axial forces and biaxial bending through computational routines. The computer codes were developed in Matlab, including physical and geometrical nonlinearities, and can be divided into two major parts: (1) characterized by cross section analysis, which is divided into sub-regions for numerical integration, and by varying curvature and neutral axis slope and depth, resistant internal forces and strains are evaluated; (2) a global stability analysis of the structure, where the column is segmented along its height and for each section between the elements a routine evaluates the curvature at equilibrium. The updated deflection is obtained by double curvature integration and provides an additional eccentricity which is added to the initial results into a new iteration. The process is repeated until a convergence criterion is reached or column failure, and thus the final internal forces are computed. The proposed routine results were validated by experimental analysis and finite element simulations with commercial codes Athena and Midas, confirming the validity and efficiency of the present proposal. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-02-08 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.unb.br/index.php/ripe/article/view/21014 10.26512/ripe.v2i24.21014 |
url |
https://periodicos.unb.br/index.php/ripe/article/view/21014 |
identifier_str_mv |
10.26512/ripe.v2i24.21014 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.unb.br/index.php/ripe/article/view/21014/19352 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2018 Revista Interdisciplinar de Pesquisa em Engenharia - RIPE info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2018 Revista Interdisciplinar de Pesquisa em Engenharia - RIPE |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Programa de Pós-Graduação em Integridade de Materiais da Engenharia |
publisher.none.fl_str_mv |
Programa de Pós-Graduação em Integridade de Materiais da Engenharia |
dc.source.none.fl_str_mv |
Revista Interdisciplinar de Pesquisa em Engenharia; Vol. 2 No. 24 (2016): NUMERICAL METHODS APPLIED TO STRUCTURAL DESIGN (II); 64-85 Revista Interdisciplinar de Pesquisa em Engenharia; v. 2 n. 24 (2016): NUMERICAL METHODS APPLIED TO STRUCTURAL DESIGN (II); 64-85 2447-6102 reponame:Revista Interdisciplinar de Pesquisa em Engenharia instname:Universidade de Brasília (UnB) instacron:UNB |
instname_str |
Universidade de Brasília (UnB) |
instacron_str |
UNB |
institution |
UNB |
reponame_str |
Revista Interdisciplinar de Pesquisa em Engenharia |
collection |
Revista Interdisciplinar de Pesquisa em Engenharia |
repository.name.fl_str_mv |
Revista Interdisciplinar de Pesquisa em Engenharia - Universidade de Brasília (UnB) |
repository.mail.fl_str_mv |
anflor@unb.br |
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1798315225681756160 |