Transition zones to railway bridges: Track measurements and numerical modelling
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://repositorio.lnec.pt:8080/jspui/handle/123456789/1007251 |
Resumo: | Railway tracks degrade faster at transition zones to railway bridges. In modern lines, backfills with bound and unbound granular geomaterials have been used to minimize this problem. To provide insight into the behaviour of the train–track system and to fill the gap between numerical and experimental studies, the authors carried out extensive field measurements. These were then used to validate a FEM model that considers the relevant track components, earthworks and bridge; accounts for the train–track interaction using contact elements; and is very accurate in reproducing the measurements. Results showed that the backfill design fulfils its purpose in that it provides a stiffness transition from the embankment to the bridge. The dynamic component of the train–track interaction remained low. The performance of the model makes it a very useful tool to further study the railway track at critical locations, such as tran- sition zones. |
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spelling |
Transition zones to railway bridges: Track measurements and numerical modellingRailway trackRailway bridgesTransition zonesField measurementsNumerical modellingNonlinear dynamic analysisTrain–track interactionRailway tracks degrade faster at transition zones to railway bridges. In modern lines, backfills with bound and unbound granular geomaterials have been used to minimize this problem. To provide insight into the behaviour of the train–track system and to fill the gap between numerical and experimental studies, the authors carried out extensive field measurements. These were then used to validate a FEM model that considers the relevant track components, earthworks and bridge; accounts for the train–track interaction using contact elements; and is very accurate in reproducing the measurements. Results showed that the backfill design fulfils its purpose in that it provides a stiffness transition from the embankment to the bridge. The dynamic component of the train–track interaction remained low. The performance of the model makes it a very useful tool to further study the railway track at critical locations, such as tran- sition zones.Elsevier2015-06-05T09:44:11Z2017-04-13T11:03:46Z2014-10-01T00:00:00Z2014-10info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://repositorio.lnec.pt:8080/jspui/handle/123456789/1007251enghttp://dx.doi.org/10.1016/j.engstruct.2014.09.024Paixão, A.Fortunato, E.Calçada, R.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-13T03:05:12Zoai:localhost:123456789/1007251Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:39:39.548247Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Transition zones to railway bridges: Track measurements and numerical modelling |
title |
Transition zones to railway bridges: Track measurements and numerical modelling |
spellingShingle |
Transition zones to railway bridges: Track measurements and numerical modelling Paixão, A. Railway track Railway bridges Transition zones Field measurements Numerical modelling Nonlinear dynamic analysis Train–track interaction |
title_short |
Transition zones to railway bridges: Track measurements and numerical modelling |
title_full |
Transition zones to railway bridges: Track measurements and numerical modelling |
title_fullStr |
Transition zones to railway bridges: Track measurements and numerical modelling |
title_full_unstemmed |
Transition zones to railway bridges: Track measurements and numerical modelling |
title_sort |
Transition zones to railway bridges: Track measurements and numerical modelling |
author |
Paixão, A. |
author_facet |
Paixão, A. Fortunato, E. Calçada, R. |
author_role |
author |
author2 |
Fortunato, E. Calçada, R. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Paixão, A. Fortunato, E. Calçada, R. |
dc.subject.por.fl_str_mv |
Railway track Railway bridges Transition zones Field measurements Numerical modelling Nonlinear dynamic analysis Train–track interaction |
topic |
Railway track Railway bridges Transition zones Field measurements Numerical modelling Nonlinear dynamic analysis Train–track interaction |
description |
Railway tracks degrade faster at transition zones to railway bridges. In modern lines, backfills with bound and unbound granular geomaterials have been used to minimize this problem. To provide insight into the behaviour of the train–track system and to fill the gap between numerical and experimental studies, the authors carried out extensive field measurements. These were then used to validate a FEM model that considers the relevant track components, earthworks and bridge; accounts for the train–track interaction using contact elements; and is very accurate in reproducing the measurements. Results showed that the backfill design fulfils its purpose in that it provides a stiffness transition from the embankment to the bridge. The dynamic component of the train–track interaction remained low. The performance of the model makes it a very useful tool to further study the railway track at critical locations, such as tran- sition zones. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-10-01T00:00:00Z 2014-10 2015-06-05T09:44:11Z 2017-04-13T11:03:46Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.lnec.pt:8080/jspui/handle/123456789/1007251 |
url |
http://repositorio.lnec.pt:8080/jspui/handle/123456789/1007251 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://dx.doi.org/10.1016/j.engstruct.2014.09.024 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
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1799136883614154752 |