Dynamic performance of existing double track railway bridges at resonance with the increase of the operational line speed
comunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7035
comunitat-uji-handle3:10234/8617
comunitat-uji-handle4:
INVESTIGACIONMetadatos
Título
Dynamic performance of existing double track railway bridges at resonance with the increase of the operational line speedFecha de publicación
2017-02-01Editor
ElsevierCita bibliográfica
MOLINER CABEDO, Emma; MARTÍNEZ-RODRIGO, María D.; MUSEROS, P. Dynamic performance of existing double track railway bridges at resonance with the increase of the operational line speed. Engineering Structures (2017), v. 132, p. 98-109Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://www.sciencedirect.com/science/article/pii/S0141029616312639Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
This article addresses the dynamic behaviour of double track simply supported bridges of short to medium span lengths
(10 m < L < 25 m) belonging to conventional railway lines. These structures are susceptible to ... [+]
This article addresses the dynamic behaviour of double track simply supported bridges of short to medium span lengths
(10 m < L < 25 m) belonging to conventional railway lines. These structures are susceptible to experience inadmissible
levels of vertical vibrations when traversed by trains at high speeds, and in certain cases their dynamic performance may
require to be re-evaluated in case of an increase of the traffic velocity above 200 km/h. In engineering consultancies,
these structures have been traditionally analysed under the passage of trains at different speeds using planar models,
neglecting the contribution of transverse vibration modes and also the flexibility of the elastomeric bearings. The study
presented herein endeavours to evaluate the influence of these two aspects in the verification of the Serviceability Limit
State of vertical accelerations, which is of great interest in order to guarantee a conservative prediction of the dynamic
behaviour. In the present study, the dynamic response of representative slab and girder bridges has been evaluated using
an orthotropic plate finite element model, leading to practical conclusions regarding the circumstances under which the
above mentioned factors should be considered in order to adequately evaluate the transverse vibration levels of the deck. [-]
Publicado en
Engineering Structures (2017), v. 132Derechos de acceso
http://rightsstatements.org/vocab/CNE/1.0/
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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