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Prediction of the isolation efficiency of vibration countermeasures for a double-deck tunnel

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Clot Razquin, ArnauMés informacióMés informacióMés informació
Arcos Villamarín, RobertMés informacióMés informacióMés informació
Romeu Garbí, JordiMés informacióMés informacióMés informació
Noori, Beshshad
Document typeConference report
Defense date2016
PublisherSociedade Portuguesa de Acústica
Rights accessRestricted access - publisher's policy
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
Double-deck tunnels are an innovative tunnel design that has been recently implemented in some underground railways and metro lines worldwide. However, due to the complexity of this type of structures, its dynamic response has not yet been fully comprehended. This lack of understanding complicates the design of efficient vibration isolation countermeasures for them. Therefore, proper models for predicting the vibration impact of double-deck tunnels are highly needed. The aim of this paper is to present, on the one hand, an efficient model of a railway superstructure implemented in a double-deck tunnel and, on the other, to study how the vibration impact of this structure is affected by the addition of an elastomeric mat between the interior floor-tunnel contact and by modifications of the rail pads stiffness and damping values. In both cases, the results are presented in terms of the energy flow radiated upwards by the structure when harmonic moving loads circulate along the rails.
CitationClot, A., Arcos, R., Romeu, J., Noori, B. Prediction of the isolation efficiency of vibration countermeasures for a double-deck tunnel. A: Congreso Ibérico de Acústica y Congreso Español de Acústica. "EuroRegio 2016: June 13-15, 2016, Porto, Portugal: 9th Iberian Acoustics Congress; 47th Spanish Congress on Acoustics. Tecniacústica 2016". Porto: Sociedade Portuguesa de Acústica, 2016. 
URIhttp://hdl.handle.net/2117/103555
ISBN978-84-87985-27-0
Publisher versionhttp://www.sea-acustica.es/fileadmin/Oporto16/164.pdf
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  • LEAM - Laboratori d'Enginyeria Acústica i Mecànica - Ponències/Comunicacions de congressos [67]
  • Departament d'Enginyeria mecànica - Ponències/Comunicacions de congressos [416]
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