Effect of soil properties on the dynamic response of simply-supported bridges under railway traffic through coupled boundary element-finite element analyses

Railway induced vibrations on short-to-medium span simply-supported (SS) bridges is addressed in this contribution. Such structures may experience high levels of vertical acceleration at the platform, leading to adverse consequences such as a premature degradation of the ballast layer and passenger...

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Authors: Martínez-Rodrigo, María Dolores, Galvín, Pedro, Domenech, A., Romero Ordóñez, Antonio
Format: article
Status:Versión aceptada para publicación
Publication Date:2018
Country:España
Institution:Universidad de Sevilla (US)
Repository:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/77634
Online Access:https://hdl.handle.net/11441/77634
https://doi.org/10.1016/j.engstruct.2018.02.089
Access Level:Open access
Keyword:Railway bridges
Soil-structure interaction
Resonance
Cancellation
Moving loads
BEM-FEM coupled models
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spelling Effect of soil properties on the dynamic response of simply-supported bridges under railway traffic through coupled boundary element-finite element analysesMartínez-Rodrigo, María DoloresGalvín, PedroDomenech, A.Romero Ordóñez, AntonioRailway bridgesSoil-structure interactionResonanceCancellationMoving loadsBEM-FEM coupled modelsRailway induced vibrations on short-to-medium span simply-supported (SS) bridges is addressed in this contribution. Such structures may experience high levels of vertical acceleration at the platform, leading to adverse consequences such as a premature degradation of the ballast layer and passenger discomfort. In the present study, the evolution of the bridge dynamic response when soil-structure interaction (SSI) is taken into account is investigated. To this end a coupled three-dimensional (3D) Boundary Element-Finite Element model (BEM-FEM) formulated in the time domain is implemented to reproduce the soil and structural behaviour, respectively. First, a set of soil-bridge systems of interest is defined, covering a wide range of lengths and natural frequencies for the structures, and an interval of expectable elastic properties and damping levels for the soil. Then, different types of analyses are performed on the soil-bridge systems extracting conclusions regarding the effect of including SSI in numerical models for predicting the bridge behaviour under railway traffic. In particular natural frequencies and modal damping levels are identified, and the structure amplification after the passage of a moving load in free vibration is investigated. Conclusions regarding how resonance and cancellation conditions may be affected by soil properties are extracted. Finally, the dynamic response of a real bridge, belonging to the Spanish railway network, is evaluated under the circulation of trains that induce second and third resonances of the bridge fundamental mode. The effect of the soil flexibility, soil material damping and the bridge resonance order are evaluated. Conclusions regarding the appropriateness of the results provided by common models which do not include SSI effects are extractedMinisterio de Economía y Competitividad BIA2013-43085-PMinisterio de Economía y Competitividad BIA2016-75042-C2Centro Informático Científico de Andalucía (CICA)ElsevierMecánica de Medios Continuos y Teoría de EstructurasTEP245: Ingeniería de las Estructuras2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/77634https://doi.org/10.1016/j.engstruct.2018.02.089reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésEngineering Structures, 170 (September 2018), 78-90.BIA2013-43085-PBIA2016-75042-C2https://www.sciencedirect.com/science/article/pii/S0141029617311367info:eu-repo/semantics/openAccessoai:idus.us.es:11441/776342026-06-17T12:51:07Z
dc.title.none.fl_str_mv Effect of soil properties on the dynamic response of simply-supported bridges under railway traffic through coupled boundary element-finite element analyses
title Effect of soil properties on the dynamic response of simply-supported bridges under railway traffic through coupled boundary element-finite element analyses
spellingShingle Effect of soil properties on the dynamic response of simply-supported bridges under railway traffic through coupled boundary element-finite element analyses
Martínez-Rodrigo, María Dolores
Railway bridges
Soil-structure interaction
Resonance
Cancellation
Moving loads
BEM-FEM coupled models
title_short Effect of soil properties on the dynamic response of simply-supported bridges under railway traffic through coupled boundary element-finite element analyses
title_full Effect of soil properties on the dynamic response of simply-supported bridges under railway traffic through coupled boundary element-finite element analyses
title_fullStr Effect of soil properties on the dynamic response of simply-supported bridges under railway traffic through coupled boundary element-finite element analyses
title_full_unstemmed Effect of soil properties on the dynamic response of simply-supported bridges under railway traffic through coupled boundary element-finite element analyses
title_sort Effect of soil properties on the dynamic response of simply-supported bridges under railway traffic through coupled boundary element-finite element analyses
dc.creator.none.fl_str_mv Martínez-Rodrigo, María Dolores
Galvín, Pedro
Domenech, A.
Romero Ordóñez, Antonio
author Martínez-Rodrigo, María Dolores
author_facet Martínez-Rodrigo, María Dolores
Galvín, Pedro
Domenech, A.
Romero Ordóñez, Antonio
author_role author
author2 Galvín, Pedro
Domenech, A.
Romero Ordóñez, Antonio
author2_role author
author
author
dc.contributor.none.fl_str_mv Mecánica de Medios Continuos y Teoría de Estructuras
TEP245: Ingeniería de las Estructuras
dc.subject.none.fl_str_mv Railway bridges
Soil-structure interaction
Resonance
Cancellation
Moving loads
BEM-FEM coupled models
topic Railway bridges
Soil-structure interaction
Resonance
Cancellation
Moving loads
BEM-FEM coupled models
description Railway induced vibrations on short-to-medium span simply-supported (SS) bridges is addressed in this contribution. Such structures may experience high levels of vertical acceleration at the platform, leading to adverse consequences such as a premature degradation of the ballast layer and passenger discomfort. In the present study, the evolution of the bridge dynamic response when soil-structure interaction (SSI) is taken into account is investigated. To this end a coupled three-dimensional (3D) Boundary Element-Finite Element model (BEM-FEM) formulated in the time domain is implemented to reproduce the soil and structural behaviour, respectively. First, a set of soil-bridge systems of interest is defined, covering a wide range of lengths and natural frequencies for the structures, and an interval of expectable elastic properties and damping levels for the soil. Then, different types of analyses are performed on the soil-bridge systems extracting conclusions regarding the effect of including SSI in numerical models for predicting the bridge behaviour under railway traffic. In particular natural frequencies and modal damping levels are identified, and the structure amplification after the passage of a moving load in free vibration is investigated. Conclusions regarding how resonance and cancellation conditions may be affected by soil properties are extracted. Finally, the dynamic response of a real bridge, belonging to the Spanish railway network, is evaluated under the circulation of trains that induce second and third resonances of the bridge fundamental mode. The effect of the soil flexibility, soil material damping and the bridge resonance order are evaluated. Conclusions regarding the appropriateness of the results provided by common models which do not include SSI effects are extracted
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/77634
https://doi.org/10.1016/j.engstruct.2018.02.089
url https://hdl.handle.net/11441/77634
https://doi.org/10.1016/j.engstruct.2018.02.089
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Engineering Structures, 170 (September 2018), 78-90.
BIA2013-43085-P
BIA2016-75042-C2
https://www.sciencedirect.com/science/article/pii/S0141029617311367
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.301603

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