Influence of track modelling in modal parameters of railway bridges composed by single-track adjacent decks
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Otros documentos de la autoría: Sánchez Quesada, Juan Carlos; Moliner, E.; Romero, A.; Galvín, Pedro; Martínez-Rodrigo, María D.
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Título
Influence of track modelling in modal parameters of railway bridges composed by single-track adjacent decksAutoría
Fecha de publicación
2022-05-01Editor
Universitat Politècnica de ValènciaISBN
9788490489697Cita bibliográfica
Sánchez Quesada, Juan, et al. "Influence of track modelling in modal parameters of railway bridges composed by single-track adjacent decks." (2022): 278-287.Tipo de documento
info:eu-repo/semantics/conferenceObjectVersión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
A significant number of railway bridges composed by simply-supported (SS) spans
are present in existing railway lines. Special attention must be paid to short to medium span
length structures, as they are prone to ... [+]
A significant number of railway bridges composed by simply-supported (SS) spans
are present in existing railway lines. Special attention must be paid to short to medium span
length structures, as they are prone to experience high vertical acceleration levels at the deck,
due to their low weight and damping, compromising the travelling comfort and the structural
integrity. The accurate prediction of the dynamic response of these bridges is a complex issue
since it is affected by uncertain factors such as structural damping and complex interaction
mechanisms such as vehicle-bridge, soil-structure or track-bridge interaction.
Concerning track-bridge interaction, experimental evidences of a dynamic coupling exerted by
the ballasted track between subsequent SS spans and also between structurally independent single track twin adjacent decks have been reported in the literature. Nevertheless, this phenomenon
is frequently disregarded due to the computational cost of models including the track and due to
the uncertainties in the mechanical parameters that define the track system.
The present work contributes to the study of the coupling effect exerted by the ballasted track
in railway bridges composed by SS adjacent decks. With this purpose a 3D finite element (FE)
track-bridge interaction model is implemented with a continuous representation of the track
components meshing the sleepers, ballast and sub-ballast with solid FE.
The numerical model is updated with experimental measurements performed on an existing
railway bridge in a view to evaluate (i) the influence of the track continuity on the bridge modal
parameters and (ii) the adequacy of the implemented numerical model. [-]
Descripción
Proceedings from 6th ECCOMAS Young Investigators Conference 7th-9th July 2021, Valencia, Spain
Publicado en
6th ECCOMAS Young Investigators Conference. YIC 2021Entidad financiadora
Ministerio de Ciencia e Innovación de España | FEDER Andalucía 2014-2020 | Generalitat Valenciana | Universitat Jaume I | Centro Informático Científico de Andalucía (CICA)
Código del proyecto o subvención
PID2019-109622RB | US-126491 | AICO2019/175 | UJI/A2008/06
Derechos de acceso
info:eu-repo/semantics/openAccess