Method for estimating railroad track settlements due to dynamic traffic loads
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/68679 |
Resumo: | This paper is the result of real-scale physical modeling study designed to simulate the load-deformation characteristics of railroad foundation systems that include the railroad ties, the ballast, and the sub-base layers of a railroad embankment. The study presents comparisons of the application of dynamic loads of 100kN on the rails, and the resulting deformations during a 500,000 cycle testing period for three rail support systems; wood, concrete and steel. The results show that the deformation curve has an exponential shape, with the larger portion of the deformation occurring during the first 50,000 load cycles followed by a tendency to stabilize between 100,000 to 500,000 cycles. These results indicate that the critical phase of deformations of a new railroad is within the first 50,000 cycles of loading, and after that, it slowly attenuates as it approaches a stable value. The paper also presents empirically derived formulations for the estimation of the deformations of the rail supports as a result of rail traffic. |
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Repositório Institucional da UNESP |
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Method for estimating railroad track settlements due to dynamic traffic loadsCycle testingDeformation curvesDynamic trafficFoundation systemsLoad cycleLoad deformationPhysical modelingRail trafficSub-basesSupport systemsTrack settlementConcrete testingDynamic loadsGeotechnical engineeringLoadingModelsRailroadsSoil mechanicsSteel testingDeformationThis paper is the result of real-scale physical modeling study designed to simulate the load-deformation characteristics of railroad foundation systems that include the railroad ties, the ballast, and the sub-base layers of a railroad embankment. The study presents comparisons of the application of dynamic loads of 100kN on the rails, and the resulting deformations during a 500,000 cycle testing period for three rail support systems; wood, concrete and steel. The results show that the deformation curve has an exponential shape, with the larger portion of the deformation occurring during the first 50,000 load cycles followed by a tendency to stabilize between 100,000 to 500,000 cycles. These results indicate that the critical phase of deformations of a new railroad is within the first 50,000 cycles of loading, and after that, it slowly attenuates as it approaches a stable value. The paper also presents empirically derived formulations for the estimation of the deformations of the rail supports as a result of rail traffic.Department of Civil Engineering Sao Paulo State University at Bauru, Unesp, Baum (SP)College of Science, Mathematics and Engineering University of Texas at Brownsville, UTB, Brownsville (TX)Department of Civil Engineering Sao Paulo State University at Bauru, Unesp, Baum (SP)Universidade Estadual Paulista (Unesp)University of Texas at Brownsville (UTB)Queiroz, Rudney C. [UNESP]Macari, Emir José2014-05-27T11:21:46Z2014-05-27T11:21:46Z2005-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject1769-1772Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering: Geotechnology in Harmony with the Global Environment, v. 3, p. 1769-1772.http://hdl.handle.net/11449/68679WOS:0002466151021432-s2.0-84868583851Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengProceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering: Geotechnology in Harmony with the Global Environmentinfo:eu-repo/semantics/openAccess2024-06-28T12:56:52Zoai:repositorio.unesp.br:11449/68679Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:11:14.653134Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Method for estimating railroad track settlements due to dynamic traffic loads |
title |
Method for estimating railroad track settlements due to dynamic traffic loads |
spellingShingle |
Method for estimating railroad track settlements due to dynamic traffic loads Queiroz, Rudney C. [UNESP] Cycle testing Deformation curves Dynamic traffic Foundation systems Load cycle Load deformation Physical modeling Rail traffic Sub-bases Support systems Track settlement Concrete testing Dynamic loads Geotechnical engineering Loading Models Railroads Soil mechanics Steel testing Deformation |
title_short |
Method for estimating railroad track settlements due to dynamic traffic loads |
title_full |
Method for estimating railroad track settlements due to dynamic traffic loads |
title_fullStr |
Method for estimating railroad track settlements due to dynamic traffic loads |
title_full_unstemmed |
Method for estimating railroad track settlements due to dynamic traffic loads |
title_sort |
Method for estimating railroad track settlements due to dynamic traffic loads |
author |
Queiroz, Rudney C. [UNESP] |
author_facet |
Queiroz, Rudney C. [UNESP] Macari, Emir José |
author_role |
author |
author2 |
Macari, Emir José |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) University of Texas at Brownsville (UTB) |
dc.contributor.author.fl_str_mv |
Queiroz, Rudney C. [UNESP] Macari, Emir José |
dc.subject.por.fl_str_mv |
Cycle testing Deformation curves Dynamic traffic Foundation systems Load cycle Load deformation Physical modeling Rail traffic Sub-bases Support systems Track settlement Concrete testing Dynamic loads Geotechnical engineering Loading Models Railroads Soil mechanics Steel testing Deformation |
topic |
Cycle testing Deformation curves Dynamic traffic Foundation systems Load cycle Load deformation Physical modeling Rail traffic Sub-bases Support systems Track settlement Concrete testing Dynamic loads Geotechnical engineering Loading Models Railroads Soil mechanics Steel testing Deformation |
description |
This paper is the result of real-scale physical modeling study designed to simulate the load-deformation characteristics of railroad foundation systems that include the railroad ties, the ballast, and the sub-base layers of a railroad embankment. The study presents comparisons of the application of dynamic loads of 100kN on the rails, and the resulting deformations during a 500,000 cycle testing period for three rail support systems; wood, concrete and steel. The results show that the deformation curve has an exponential shape, with the larger portion of the deformation occurring during the first 50,000 load cycles followed by a tendency to stabilize between 100,000 to 500,000 cycles. These results indicate that the critical phase of deformations of a new railroad is within the first 50,000 cycles of loading, and after that, it slowly attenuates as it approaches a stable value. The paper also presents empirically derived formulations for the estimation of the deformations of the rail supports as a result of rail traffic. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-12-01 2014-05-27T11:21:46Z 2014-05-27T11:21:46Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering: Geotechnology in Harmony with the Global Environment, v. 3, p. 1769-1772. http://hdl.handle.net/11449/68679 WOS:000246615102143 2-s2.0-84868583851 |
identifier_str_mv |
Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering: Geotechnology in Harmony with the Global Environment, v. 3, p. 1769-1772. WOS:000246615102143 2-s2.0-84868583851 |
url |
http://hdl.handle.net/11449/68679 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering: Geotechnology in Harmony with the Global Environment |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1769-1772 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128328938291200 |