Development of Brazilian highway live load model for unlimited fatigue life

Detalhes bibliográficos
Autor(a) principal: Carneiro,Anselmo Leal
Data de Publicação: 2020
Outros Autores: Portela,Enson de Lima, Bittencourt,Túlio Nogueira
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=S1983-41952020000400213
Resumo: Abstract This work studies the fatigue live load model used in Brazil for highway bridges. Using the unlimited fatigue life approach, the current live load model is evaluated in relation to the actual traffic and a new fatigue live load model is proposed. Weigh-in-motion (WIM) stations data on two important Brazilian highways are used. The main structural analysis performed in this paper consider the bridges as box girders or multiple girders. The ratio between real traffic and the live load model load effect (bias factor) are determined for single and continuous spans in terms of bending moment and shear force. It is found that the bias factor of the current live load can vary a lot and may not ensure unlimited fatigue life. The proposed model, on the other hand, presents more uniform bias factors and is in accordance with the unlimited fatigue life approach for the WIM data.
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spelling Development of Brazilian highway live load model for unlimited fatigue lifehighway bridgesfatiguelive loadweigh-in-motion Abstract This work studies the fatigue live load model used in Brazil for highway bridges. Using the unlimited fatigue life approach, the current live load model is evaluated in relation to the actual traffic and a new fatigue live load model is proposed. Weigh-in-motion (WIM) stations data on two important Brazilian highways are used. The main structural analysis performed in this paper consider the bridges as box girders or multiple girders. The ratio between real traffic and the live load model load effect (bias factor) are determined for single and continuous spans in terms of bending moment and shear force. It is found that the bias factor of the current live load can vary a lot and may not ensure unlimited fatigue life. The proposed model, on the other hand, presents more uniform bias factors and is in accordance with the unlimited fatigue life approach for the WIM data.IBRACON - Instituto Brasileiro do Concreto2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952020000400213Revista IBRACON de Estruturas e Materiais v.13 n.4 2020reponame:Revista IBRACON de Estruturas e Materiaisinstname:Instituto Brasileiro do Concreto (IBRACON)instacron:IBRACON10.1590/s1983-41952020000400007info:eu-repo/semantics/openAccessCarneiro,Anselmo LealPortela,Enson de LimaBittencourt,Túlio Nogueiraeng2020-08-27T00:00:00Zoai:scielo:S1983-41952020000400213Revistahttp://www.revistas.ibracon.org.br/index.php/riemhttps://old.scielo.br/oai/scielo-oai.phpeditores.riem@gmail.com||arlene@ibracon.org.br1983-41951983-4195opendoar:2020-08-27T00:00Revista IBRACON de Estruturas e Materiais - Instituto Brasileiro do Concreto (IBRACON)false
dc.title.none.fl_str_mv Development of Brazilian highway live load model for unlimited fatigue life
title Development of Brazilian highway live load model for unlimited fatigue life
spellingShingle Development of Brazilian highway live load model for unlimited fatigue life
Carneiro,Anselmo Leal
highway bridges
fatigue
live load
weigh-in-motion
title_short Development of Brazilian highway live load model for unlimited fatigue life
title_full Development of Brazilian highway live load model for unlimited fatigue life
title_fullStr Development of Brazilian highway live load model for unlimited fatigue life
title_full_unstemmed Development of Brazilian highway live load model for unlimited fatigue life
title_sort Development of Brazilian highway live load model for unlimited fatigue life
author Carneiro,Anselmo Leal
author_facet Carneiro,Anselmo Leal
Portela,Enson de Lima
Bittencourt,Túlio Nogueira
author_role author
author2 Portela,Enson de Lima
Bittencourt,Túlio Nogueira
author2_role author
author
dc.contributor.author.fl_str_mv Carneiro,Anselmo Leal
Portela,Enson de Lima
Bittencourt,Túlio Nogueira
dc.subject.por.fl_str_mv highway bridges
fatigue
live load
weigh-in-motion
topic highway bridges
fatigue
live load
weigh-in-motion
description Abstract This work studies the fatigue live load model used in Brazil for highway bridges. Using the unlimited fatigue life approach, the current live load model is evaluated in relation to the actual traffic and a new fatigue live load model is proposed. Weigh-in-motion (WIM) stations data on two important Brazilian highways are used. The main structural analysis performed in this paper consider the bridges as box girders or multiple girders. The ratio between real traffic and the live load model load effect (bias factor) are determined for single and continuous spans in terms of bending moment and shear force. It is found that the bias factor of the current live load can vary a lot and may not ensure unlimited fatigue life. The proposed model, on the other hand, presents more uniform bias factors and is in accordance with the unlimited fatigue life approach for the WIM data.
publishDate 2020
dc.date.none.fl_str_mv 2020-01-01
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=S1983-41952020000400213
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952020000400213
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s1983-41952020000400007
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.4 2020
reponame:Revista IBRACON de Estruturas e Materiais
instname:Instituto Brasileiro do Concreto (IBRACON)
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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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