Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/100519
DC FieldValueLanguage
dc.contributor.authorLázaro, João-
dc.contributor.authorPereira, Matheus-
dc.contributor.authorCosta, Pedro Alves-
dc.contributor.authorGodinho, Luís-
dc.date.accessioned2022-06-28T09:54:43Z-
dc.date.available2022-06-28T09:54:43Z-
dc.date.issued2022-
dc.identifier.issn2076-3417-
dc.identifier.urihttp://hdl.handle.net/10316/100519-
dc.description.abstractRail transport is the most sustainable transportation mode, with the lowest energy consumption and carbon footprint. However, the noise induced by railway traffic in urban regions is a significant drawback and several reports point out the risks and the amount of people suffering from direct exposure to railway noise. One of the most used mitigation measures for railway noise is the implementation of noise barriers. Although they offer a significant reduction in noise levels, their height makes people feel enclosed. Therefore, in the case of railway infrastructure, the solution to the problem may lie in the use of barriers with a lower height placed close to the railway track. As the noise-forming mechanisms are mainly located at the track level, placing the barrier in a position close to the track allows mitigating rail noise without causing the problems identified above for the population in the vicinity. The purpose of this paper is to illustrate the development of a barrier solution to be used in a railway context through numerical modelling with the Boundary Element Method (BEM). The solutions developed were placed close to the track and have a low height. The geometry was defined so as to direct the energy back to the track to take advantage of the acoustic properties of the ballast. The addition of a porous granular material on the inner face of the barrier allows the control of reflections between the vehicle body and the barrier, increasing its acoustic efficiency. Finally, considering the most efficient solution, the insertion loss in a network of receivers located 10 m away from the track is analysed in order to study the noise reduction levels in a place where human receivers are usually located.pt
dc.language.isoengpt
dc.relationUIDB/04708/2020pt
dc.relationUIDP/04708/2020pt
dc.relationUIDB/04029/2020pt
dc.relationPOCI-01-0247-FEDER-033990pt
dc.relationFCT/MCTES Individual Grant: SFRH/BD/148367/2019pt
dc.rightsopenAccesspt
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt
dc.subjectrailway noisept
dc.subjectlow height noise barrierspt
dc.subjectacoustic efficiencypt
dc.subjectnoise mitigationpt
dc.titlePerformance of Low-Height Railway Noise Barriers with Porous Materialspt
dc.typearticlept
degois.publication.firstPage2960pt
degois.publication.issue6pt
degois.publication.titleApplied Sciences (Switzerland)pt
dc.peerreviewedyespt
dc.identifier.doi10.3390/app12062960-
degois.publication.volume12pt
dc.date.embargo2022-01-01*
uc.date.periodoEmbargo0pt
item.fulltextCom Texto completo-
item.grantfulltextopen-
item.languageiso639-1en-
crisitem.author.deptFaculty of Sciences and Technology-
crisitem.author.parentdeptUniversity of Coimbra-
crisitem.author.researchunitCentre for Research in Construction Science-
crisitem.author.orcid0000-0002-2989-375X-
Appears in Collections:I&D ISISE - Artigos em Revistas Internacionais
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This item is licensed under a Creative Commons License Creative Commons