Wind load effect on the lateral instability of precast beams on elastomeric bearing supports

Detalhes bibliográficos
Autor(a) principal: CARDOSO,M. T. S. A.
Data de Publicação: 2020
Outros Autores: LIMA,M. C. V.
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=S1983-41952020000300593
Resumo: Abstract The behavior of slender precast beams related to lateral stability in the transitional and in service phases is worrying. The presence of geometric imperfections aggravates and makes the problems of instability more susceptible. The main objective of this work is to evaluate the behavior of concrete beams on elastomeric bearings and to analyze the influence of variables such as: concrete strength, wind load and bearing compression stiffness. For the numerical nonlinear analysis the software ANSYS based on the Finite Element Method was used. The analyses show that the influence of the strength of the concrete is significant in the lateral stability of the beam. The wind load represents a considerable decrease in the contact (lift off) between the beam and the bearing. Finally, the combination of these factors can result in a critical stress situation in the beam, and it is not possible to have equilibrium, causing its toppling.
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spelling Wind load effect on the lateral instability of precast beams on elastomeric bearing supportsstabilitybearingstiffnessequilibriumtopplingAbstract The behavior of slender precast beams related to lateral stability in the transitional and in service phases is worrying. The presence of geometric imperfections aggravates and makes the problems of instability more susceptible. The main objective of this work is to evaluate the behavior of concrete beams on elastomeric bearings and to analyze the influence of variables such as: concrete strength, wind load and bearing compression stiffness. For the numerical nonlinear analysis the software ANSYS based on the Finite Element Method was used. The analyses show that the influence of the strength of the concrete is significant in the lateral stability of the beam. The wind load represents a considerable decrease in the contact (lift off) between the beam and the bearing. Finally, the combination of these factors can result in a critical stress situation in the beam, and it is not possible to have equilibrium, causing its toppling.IBRACON - Instituto Brasileiro do Concreto2020-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952020000300593Revista IBRACON de Estruturas e Materiais v.13 n.3 2020reponame:Revista IBRACON de Estruturas e Materiaisinstname:Instituto Brasileiro do Concreto (IBRACON)instacron:IBRACON10.1590/s1983-41952020000300009info:eu-repo/semantics/openAccessCARDOSO,M. T. S. A.LIMA,M. C. V.eng2020-07-09T00:00:00Zoai:scielo:S1983-41952020000300593Revistahttp://www.revistas.ibracon.org.br/index.php/riemhttps://old.scielo.br/oai/scielo-oai.phpeditores.riem@gmail.com||arlene@ibracon.org.br1983-41951983-4195opendoar:2020-07-09T00:00Revista IBRACON de Estruturas e Materiais - Instituto Brasileiro do Concreto (IBRACON)false
dc.title.none.fl_str_mv Wind load effect on the lateral instability of precast beams on elastomeric bearing supports
title Wind load effect on the lateral instability of precast beams on elastomeric bearing supports
spellingShingle Wind load effect on the lateral instability of precast beams on elastomeric bearing supports
CARDOSO,M. T. S. A.
stability
bearing
stiffness
equilibrium
toppling
title_short Wind load effect on the lateral instability of precast beams on elastomeric bearing supports
title_full Wind load effect on the lateral instability of precast beams on elastomeric bearing supports
title_fullStr Wind load effect on the lateral instability of precast beams on elastomeric bearing supports
title_full_unstemmed Wind load effect on the lateral instability of precast beams on elastomeric bearing supports
title_sort Wind load effect on the lateral instability of precast beams on elastomeric bearing supports
author CARDOSO,M. T. S. A.
author_facet CARDOSO,M. T. S. A.
LIMA,M. C. V.
author_role author
author2 LIMA,M. C. V.
author2_role author
dc.contributor.author.fl_str_mv CARDOSO,M. T. S. A.
LIMA,M. C. V.
dc.subject.por.fl_str_mv stability
bearing
stiffness
equilibrium
toppling
topic stability
bearing
stiffness
equilibrium
toppling
description Abstract The behavior of slender precast beams related to lateral stability in the transitional and in service phases is worrying. The presence of geometric imperfections aggravates and makes the problems of instability more susceptible. The main objective of this work is to evaluate the behavior of concrete beams on elastomeric bearings and to analyze the influence of variables such as: concrete strength, wind load and bearing compression stiffness. For the numerical nonlinear analysis the software ANSYS based on the Finite Element Method was used. The analyses show that the influence of the strength of the concrete is significant in the lateral stability of the beam. The wind load represents a considerable decrease in the contact (lift off) between the beam and the bearing. Finally, the combination of these factors can result in a critical stress situation in the beam, and it is not possible to have equilibrium, causing its toppling.
publishDate 2020
dc.date.none.fl_str_mv 2020-06-01
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=S1983-41952020000300593
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952020000300593
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s1983-41952020000300009
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.13 n.3 2020
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
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