Railway Track Transition Zones: Design, Construction, Monitoring and Numerical Modelling
Autor(a) principal: | |
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Data de Publicação: | 2013 |
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/123456789/1006518 |
Resumo: | Railway tracks frequently show higher degradation rates at transition zones from earthworks to bridges, or to other structures. In order to guarantee the safety and comfort of passengers, this aspect results in higher maintenance costs and disturbs railway operations. The behaviour of transition zones is rather complex and its poor performance has been mainly attributed to variations in the vertical stiffness of the track and to differential settlements. These two aspects amplify the dynamic loads of the trains and cause further track degradation. The Portuguese railway network manager has reported the poor structural behaviour of a few transition zones in some of its lines, which constrain train operations and present high maintenance costs. Thus, a research project is currently underway aiming at contributing to a better understanding of the phenomena that occur at transitions, and at optimizing their design for conventional and high-speed railway lines. In this article, we present some aspects of this research project, namely: a review on the design of backfills for transition zones; a comparison between numerical models found in the literature that were used to study the problem; some results obtained during the construction (characterization of materials and layers) and operation of the line. |
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Railway Track Transition Zones: Design, Construction, Monitoring and Numerical ModellingTransition zonesBackfillsNumerical modellingCyclic load triaxial testsField characterizationTrack monitoringHigh-speed railway linesRailway tracks frequently show higher degradation rates at transition zones from earthworks to bridges, or to other structures. In order to guarantee the safety and comfort of passengers, this aspect results in higher maintenance costs and disturbs railway operations. The behaviour of transition zones is rather complex and its poor performance has been mainly attributed to variations in the vertical stiffness of the track and to differential settlements. These two aspects amplify the dynamic loads of the trains and cause further track degradation. The Portuguese railway network manager has reported the poor structural behaviour of a few transition zones in some of its lines, which constrain train operations and present high maintenance costs. Thus, a research project is currently underway aiming at contributing to a better understanding of the phenomena that occur at transitions, and at optimizing their design for conventional and high-speed railway lines. In this article, we present some aspects of this research project, namely: a review on the design of backfills for transition zones; a comparison between numerical models found in the literature that were used to study the problem; some results obtained during the construction (characterization of materials and layers) and operation of the line.Saxe-Coburg2014-10-07T08:04:09Z2014-10-21T08:49:19Z2017-04-13T09:56:01Z2013-01-01T00:00:00Z2013info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://repositorio.lnec.pt:8080/jspui/handle/123456789/1006518eng2049-5358doi:10.4203/ijrt.2.4.3Fortunato, E.Paixão, A.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:RCAAP2024-01-13T03:04:27Zoai:localhost:123456789/1006518Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:39:20.386535Repositório 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 |
Railway Track Transition Zones: Design, Construction, Monitoring and Numerical Modelling |
title |
Railway Track Transition Zones: Design, Construction, Monitoring and Numerical Modelling |
spellingShingle |
Railway Track Transition Zones: Design, Construction, Monitoring and Numerical Modelling Fortunato, E. Transition zones Backfills Numerical modelling Cyclic load triaxial tests Field characterization Track monitoring High-speed railway lines |
title_short |
Railway Track Transition Zones: Design, Construction, Monitoring and Numerical Modelling |
title_full |
Railway Track Transition Zones: Design, Construction, Monitoring and Numerical Modelling |
title_fullStr |
Railway Track Transition Zones: Design, Construction, Monitoring and Numerical Modelling |
title_full_unstemmed |
Railway Track Transition Zones: Design, Construction, Monitoring and Numerical Modelling |
title_sort |
Railway Track Transition Zones: Design, Construction, Monitoring and Numerical Modelling |
author |
Fortunato, E. |
author_facet |
Fortunato, E. Paixão, A. Calçada, R. |
author_role |
author |
author2 |
Paixão, A. Calçada, R. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Fortunato, E. Paixão, A. Calçada, R. |
dc.subject.por.fl_str_mv |
Transition zones Backfills Numerical modelling Cyclic load triaxial tests Field characterization Track monitoring High-speed railway lines |
topic |
Transition zones Backfills Numerical modelling Cyclic load triaxial tests Field characterization Track monitoring High-speed railway lines |
description |
Railway tracks frequently show higher degradation rates at transition zones from earthworks to bridges, or to other structures. In order to guarantee the safety and comfort of passengers, this aspect results in higher maintenance costs and disturbs railway operations. The behaviour of transition zones is rather complex and its poor performance has been mainly attributed to variations in the vertical stiffness of the track and to differential settlements. These two aspects amplify the dynamic loads of the trains and cause further track degradation. The Portuguese railway network manager has reported the poor structural behaviour of a few transition zones in some of its lines, which constrain train operations and present high maintenance costs. Thus, a research project is currently underway aiming at contributing to a better understanding of the phenomena that occur at transitions, and at optimizing their design for conventional and high-speed railway lines. In this article, we present some aspects of this research project, namely: a review on the design of backfills for transition zones; a comparison between numerical models found in the literature that were used to study the problem; some results obtained during the construction (characterization of materials and layers) and operation of the line. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-01-01T00:00:00Z 2013 2014-10-07T08:04:09Z 2014-10-21T08:49:19Z 2017-04-13T09:56:01Z |
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/123456789/1006518 |
url |
http://repositorio.lnec.pt:8080/jspui/handle/123456789/1006518 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2049-5358 doi:10.4203/ijrt.2.4.3 |
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 |
Saxe-Coburg |
publisher.none.fl_str_mv |
Saxe-Coburg |
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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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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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1799136879458648064 |