On the vertical coupling effect of ballasted tracks in multi–span simply–supported railway bridges under operating conditions
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Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7035
comunitat-uji-handle3:10234/8617
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INVESTIGACIONMetadata
Title
On the vertical coupling effect of ballasted tracks in multi–span simply–supported railway bridges under operating conditionsAuthor (s)
Date
2022Publisher
RoutledgeISSN
1573-2479; 1744-8980Bibliographic citation
Emma Moliner, María Dolores Martínez-Rodrigo, Pedro Galvín, Josep Chordà- Monsonís & Antonio Romero (2022) On the vertical coupling effect of ballasted tracks in multi–span simply–supported railway bridges under operating conditions, Structure and Infrastructure Engineering, DOI: 10.1080/15732479.2022.2049828Type
info:eu-repo/semantics/articlePublisher version
https://www.tandfonline.com/doi/full/10.1080/15732479.2022.2049828Version
info:eu-repo/semantics/submittedVersionSubject
Abstract
This contribution investigates the vertical coupling exerted by ballasted tracks on the vertical response of bridges composed either of (i) several successive simply-supported spans with weak coupling between them due ... [+]
This contribution investigates the vertical coupling exerted by ballasted tracks on the vertical response of bridges composed either of (i) several successive simply-supported spans with weak coupling between them due to the continuous track; or (ii) adjacent single-track decks conforming a double-track bridge, in which interaction effects are induced due to the transverse continuity of the ballast layer. To this end, 2 D and 3 D track-bridge interaction Finite Element models are implemented, which consider a three-layer discrete and explicit idealization of the track. The 2 D track-bridge interaction model is used to perform sensitivity analyses on the track parameters, which have revealed that the ballast shear mechanisms along the track may significantly affect the train-induced vibrations under resonant conditions. Then, the influence of the ballast coupling on the response of twin adjacent decks is investigated with a 3 D track-bridge interaction model. To this end, this model is updated based on the results of an experimental campaign performed on a real bridge composed of two SS spans and two single track twin adjacent decks. The numerical-experimental comparison shows an evident dynamic vertical coupling between the bridge decks and reveals the importance of including the ballasted track in the modelling process of these structures. [-]
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Structure and Infrastructure Engineering, 2022Funder Name
Ministerio de Ciencia, Innovación y Universidades | FEDER Andalucía 2014-2020 Operational Program | Generalitat Valenciana | Junta de Andalucía | European Social Fund | Universidad de Sevilla | Andalusian Scientific Computing Centre (CICA)
Project code
MICIU/ICTI2017-2020/PID2019-109622RB | US-126491 | AICO2021/200 | USE-20617-D
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Copyright © Taylor & Francis
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