Global stability analysis of reinforced concrete buildings using the γ z coefficient
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista IBRACON de Estruturas e Materiais |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952017000501113 |
Resumo: | Abstract Global stability analysis is becoming increasingly important in the design of reinforced concrete buildings, especially in the slender ones, due its sensitivity to lateral displacement. The loss of stability is usually associated with the intensity of the second order effects and, in that sense, the gamma-z (γz) coefficient is an important evaluation parameter for this problem. This work aims to verify the γz efficiency as a global stability parameter based on the buckling load factors of the structures and their respective critical buckling modes. To this purpose, a comparative analysis is performed in several idealized structures, from which an approximate equation for calculating the critical load factor based on the γz coefficient is obtained. This equation was verified by numerical analysis of Finite Elements Method models of real reinforced concrete buildings. It was concluded that the proposed equation presents satisfying results within a certain range of γz. |
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Global stability analysis of reinforced concrete buildings using the γ z coefficientglobal stabilitysecond order global effectsgamma-z coefficientcritical load factorreinforced concrete buildingsAbstract Global stability analysis is becoming increasingly important in the design of reinforced concrete buildings, especially in the slender ones, due its sensitivity to lateral displacement. The loss of stability is usually associated with the intensity of the second order effects and, in that sense, the gamma-z (γz) coefficient is an important evaluation parameter for this problem. This work aims to verify the γz efficiency as a global stability parameter based on the buckling load factors of the structures and their respective critical buckling modes. To this purpose, a comparative analysis is performed in several idealized structures, from which an approximate equation for calculating the critical load factor based on the γz coefficient is obtained. This equation was verified by numerical analysis of Finite Elements Method models of real reinforced concrete buildings. It was concluded that the proposed equation presents satisfying results within a certain range of γz.IBRACON - Instituto Brasileiro do Concreto2017-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952017000501113Revista IBRACON de Estruturas e Materiais v.10 n.5 2017reponame:Revista IBRACON de Estruturas e Materiaisinstname:Instituto Brasileiro do Concreto (IBRACON)instacron:IBRACON10.1590/s1983-41952017000500010info:eu-repo/semantics/openAccessVIEIRA,V. V. S.RODRIGUES JUNIOR,S. J.VELOSO,L. A. C. M.eng2017-11-07T00:00:00Zoai:scielo:S1983-41952017000501113Revistahttp://www.revistas.ibracon.org.br/index.php/riemhttps://old.scielo.br/oai/scielo-oai.phpeditores.riem@gmail.com||arlene@ibracon.org.br1983-41951983-4195opendoar:2017-11-07T00:00Revista IBRACON de Estruturas e Materiais - Instituto Brasileiro do Concreto (IBRACON)false |
dc.title.none.fl_str_mv |
Global stability analysis of reinforced concrete buildings using the γ z coefficient |
title |
Global stability analysis of reinforced concrete buildings using the γ z coefficient |
spellingShingle |
Global stability analysis of reinforced concrete buildings using the γ z coefficient VIEIRA,V. V. S. global stability second order global effects gamma-z coefficient critical load factor reinforced concrete buildings |
title_short |
Global stability analysis of reinforced concrete buildings using the γ z coefficient |
title_full |
Global stability analysis of reinforced concrete buildings using the γ z coefficient |
title_fullStr |
Global stability analysis of reinforced concrete buildings using the γ z coefficient |
title_full_unstemmed |
Global stability analysis of reinforced concrete buildings using the γ z coefficient |
title_sort |
Global stability analysis of reinforced concrete buildings using the γ z coefficient |
author |
VIEIRA,V. V. S. |
author_facet |
VIEIRA,V. V. S. RODRIGUES JUNIOR,S. J. VELOSO,L. A. C. M. |
author_role |
author |
author2 |
RODRIGUES JUNIOR,S. J. VELOSO,L. A. C. M. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
VIEIRA,V. V. S. RODRIGUES JUNIOR,S. J. VELOSO,L. A. C. M. |
dc.subject.por.fl_str_mv |
global stability second order global effects gamma-z coefficient critical load factor reinforced concrete buildings |
topic |
global stability second order global effects gamma-z coefficient critical load factor reinforced concrete buildings |
description |
Abstract Global stability analysis is becoming increasingly important in the design of reinforced concrete buildings, especially in the slender ones, due its sensitivity to lateral displacement. The loss of stability is usually associated with the intensity of the second order effects and, in that sense, the gamma-z (γz) coefficient is an important evaluation parameter for this problem. This work aims to verify the γz efficiency as a global stability parameter based on the buckling load factors of the structures and their respective critical buckling modes. To this purpose, a comparative analysis is performed in several idealized structures, from which an approximate equation for calculating the critical load factor based on the γz coefficient is obtained. This equation was verified by numerical analysis of Finite Elements Method models of real reinforced concrete buildings. It was concluded that the proposed equation presents satisfying results within a certain range of γz. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952017000501113 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952017000501113 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/s1983-41952017000500010 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
IBRACON - Instituto Brasileiro do Concreto |
publisher.none.fl_str_mv |
IBRACON - Instituto Brasileiro do Concreto |
dc.source.none.fl_str_mv |
Revista IBRACON de Estruturas e Materiais v.10 n.5 2017 reponame:Revista IBRACON de Estruturas e Materiais instname:Instituto Brasileiro do Concreto (IBRACON) instacron:IBRACON |
instname_str |
Instituto Brasileiro do Concreto (IBRACON) |
instacron_str |
IBRACON |
institution |
IBRACON |
reponame_str |
Revista IBRACON de Estruturas e Materiais |
collection |
Revista IBRACON de Estruturas e Materiais |
repository.name.fl_str_mv |
Revista IBRACON de Estruturas e Materiais - Instituto Brasileiro do Concreto (IBRACON) |
repository.mail.fl_str_mv |
editores.riem@gmail.com||arlene@ibracon.org.br |
_version_ |
1754193605237407744 |