The effect of differential settlements on the dynamic response of the train-track system: a numerical study
Autor(a) principal: | |
---|---|
Data de Publicação: | 2015 |
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/123456789/1007253 |
Resumo: | Railway tracks on earthworks with poor geotechnical performance may undergo important differential settlements that amplify the dynamic response of the train–track system, inducing rapid track degrada- tion, lower passenger comfort and higher derailment risk. Because the track substructure is normally inaccessible, these problems are not detected early, are very complex to solve and disrupt normal train operation. To study the influence of settlement profiles on the train–track system, the authors performed a parametric study comprising non-linear dynamic analyses using a FEM model to simulate different sce- narios. Some profiles caused important amplifications in the train–track system that were associated to rapid track degradation and derailment risk, while others were associated to lower passenger comfort. Hanging sleepers were found to be strongly associated to critical situations of track degradation. The results were integrated and used in a framework to establish performance indicators that can be useful for planning railway track maintenance works. |
id |
RCAP_2f41114725eb8088442fd17bbcf0444a |
---|---|
oai_identifier_str |
oai:localhost:123456789/1007253 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
The effect of differential settlements on the dynamic response of the train-track system: a numerical studyRailway trackDifferential settlementsTrack dipsNumerical modellingTrain–track interactionHanging sleepersRailway tracks on earthworks with poor geotechnical performance may undergo important differential settlements that amplify the dynamic response of the train–track system, inducing rapid track degrada- tion, lower passenger comfort and higher derailment risk. Because the track substructure is normally inaccessible, these problems are not detected early, are very complex to solve and disrupt normal train operation. To study the influence of settlement profiles on the train–track system, the authors performed a parametric study comprising non-linear dynamic analyses using a FEM model to simulate different sce- narios. Some profiles caused important amplifications in the train–track system that were associated to rapid track degradation and derailment risk, while others were associated to lower passenger comfort. Hanging sleepers were found to be strongly associated to critical situations of track degradation. The results were integrated and used in a framework to establish performance indicators that can be useful for planning railway track maintenance works.Elsevier2015-06-05T09:47:31Z2017-04-12T16:25:55Z2015-02-01T00:00:00Z2015-02info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://repositorio.lnec.pt:8080/jspui/handle/123456789/1007253enghttp://dx.doi.org/10.1016/j.engstruct.2015.01.044Paixão, 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:RCAAP2024-01-13T03:03:28Zoai:localhost:123456789/1007253Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:38:53.101475Repositório 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 |
The effect of differential settlements on the dynamic response of the train-track system: a numerical study |
title |
The effect of differential settlements on the dynamic response of the train-track system: a numerical study |
spellingShingle |
The effect of differential settlements on the dynamic response of the train-track system: a numerical study Paixão, A. Railway track Differential settlements Track dips Numerical modelling Train–track interaction Hanging sleepers |
title_short |
The effect of differential settlements on the dynamic response of the train-track system: a numerical study |
title_full |
The effect of differential settlements on the dynamic response of the train-track system: a numerical study |
title_fullStr |
The effect of differential settlements on the dynamic response of the train-track system: a numerical study |
title_full_unstemmed |
The effect of differential settlements on the dynamic response of the train-track system: a numerical study |
title_sort |
The effect of differential settlements on the dynamic response of the train-track system: a numerical study |
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 Differential settlements Track dips Numerical modelling Train–track interaction Hanging sleepers |
topic |
Railway track Differential settlements Track dips Numerical modelling Train–track interaction Hanging sleepers |
description |
Railway tracks on earthworks with poor geotechnical performance may undergo important differential settlements that amplify the dynamic response of the train–track system, inducing rapid track degrada- tion, lower passenger comfort and higher derailment risk. Because the track substructure is normally inaccessible, these problems are not detected early, are very complex to solve and disrupt normal train operation. To study the influence of settlement profiles on the train–track system, the authors performed a parametric study comprising non-linear dynamic analyses using a FEM model to simulate different sce- narios. Some profiles caused important amplifications in the train–track system that were associated to rapid track degradation and derailment risk, while others were associated to lower passenger comfort. Hanging sleepers were found to be strongly associated to critical situations of track degradation. The results were integrated and used in a framework to establish performance indicators that can be useful for planning railway track maintenance works. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-06-05T09:47:31Z 2015-02-01T00:00:00Z 2015-02 2017-04-12T16:25:55Z |
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/123456789/1007253 |
url |
http://repositorio.lnec.pt:8080/jspui/handle/123456789/1007253 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://dx.doi.org/10.1016/j.engstruct.2015.01.044 |
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 |
|
_version_ |
1799136873675751424 |