Floors number influence on the instability parameter of reinforced concrete frame-braced buildings

Detalhes bibliográficos
Autor(a) principal: ELLWANGER,R. J.
Data de Publicação: 2019
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=S1983-41952019000501034
Resumo: Abstract This work aims to investigate the floors number influence on the instability parameter limit α1 of reinforced concrete frame-braced buildings; it succeeds another work in this field of knowledge, in which the same question was investigated for wall- and core-braced buildings. Initially, it is showed how the ABNT NBR 6118:2014 (Brazilian code for concrete structures design) defines when a second order analysis is needed. Topics concerning to physical nonlinearity consideration and to the lateral deflection components of frames are also presented. It follows an analytical study that led to the derivation of a method for determining the limit α1 as a function of the floors number and the relation between bending and shear stiffness. Finally, some examples are presented and their results are used for checking the method accuracy.
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spelling Floors number influence on the instability parameter of reinforced concrete frame-braced buildingsinstabilitybracing structuressecond order analysis.Abstract This work aims to investigate the floors number influence on the instability parameter limit α1 of reinforced concrete frame-braced buildings; it succeeds another work in this field of knowledge, in which the same question was investigated for wall- and core-braced buildings. Initially, it is showed how the ABNT NBR 6118:2014 (Brazilian code for concrete structures design) defines when a second order analysis is needed. Topics concerning to physical nonlinearity consideration and to the lateral deflection components of frames are also presented. It follows an analytical study that led to the derivation of a method for determining the limit α1 as a function of the floors number and the relation between bending and shear stiffness. Finally, some examples are presented and their results are used for checking the method accuracy.IBRACON - Instituto Brasileiro do Concreto2019-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952019000501034Revista IBRACON de Estruturas e Materiais v.12 n.5 2019reponame:Revista IBRACON de Estruturas e Materiaisinstname:Instituto Brasileiro do Concreto (IBRACON)instacron:IBRACON10.1590/s1983-41952019000500005info:eu-repo/semantics/openAccessELLWANGER,R. J.eng2019-11-06T00:00:00Zoai:scielo:S1983-41952019000501034Revistahttp://www.revistas.ibracon.org.br/index.php/riemhttps://old.scielo.br/oai/scielo-oai.phpeditores.riem@gmail.com||arlene@ibracon.org.br1983-41951983-4195opendoar:2019-11-06T00:00Revista IBRACON de Estruturas e Materiais - Instituto Brasileiro do Concreto (IBRACON)false
dc.title.none.fl_str_mv Floors number influence on the instability parameter of reinforced concrete frame-braced buildings
title Floors number influence on the instability parameter of reinforced concrete frame-braced buildings
spellingShingle Floors number influence on the instability parameter of reinforced concrete frame-braced buildings
ELLWANGER,R. J.
instability
bracing structures
second order analysis.
title_short Floors number influence on the instability parameter of reinforced concrete frame-braced buildings
title_full Floors number influence on the instability parameter of reinforced concrete frame-braced buildings
title_fullStr Floors number influence on the instability parameter of reinforced concrete frame-braced buildings
title_full_unstemmed Floors number influence on the instability parameter of reinforced concrete frame-braced buildings
title_sort Floors number influence on the instability parameter of reinforced concrete frame-braced buildings
author ELLWANGER,R. J.
author_facet ELLWANGER,R. J.
author_role author
dc.contributor.author.fl_str_mv ELLWANGER,R. J.
dc.subject.por.fl_str_mv instability
bracing structures
second order analysis.
topic instability
bracing structures
second order analysis.
description Abstract This work aims to investigate the floors number influence on the instability parameter limit α1 of reinforced concrete frame-braced buildings; it succeeds another work in this field of knowledge, in which the same question was investigated for wall- and core-braced buildings. Initially, it is showed how the ABNT NBR 6118:2014 (Brazilian code for concrete structures design) defines when a second order analysis is needed. Topics concerning to physical nonlinearity consideration and to the lateral deflection components of frames are also presented. It follows an analytical study that led to the derivation of a method for determining the limit α1 as a function of the floors number and the relation between bending and shear stiffness. Finally, some examples are presented and their results are used for checking the method accuracy.
publishDate 2019
dc.date.none.fl_str_mv 2019-10-01
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=S1983-41952019000501034
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952019000501034
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s1983-41952019000500005
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.12 n.5 2019
reponame:Revista IBRACON de Estruturas e Materiais
instname:Instituto Brasileiro do Concreto (IBRACON)
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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
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