Prediction of low frequency sound fields in buildings near railway lines

Neves e Sousa, Albano; Lopes, Isabel; Carreira, A. S.

Publication

Prediction of low frequency sound fields in buildings near railway lines

2012-08Conference object

dc.contributor.author	Neves e Sousa, Albano
dc.contributor.author	Lopes, Isabel
dc.contributor.author	Carreira, A. S.
dc.date.accessioned	2013-12-04T09:21:02Z
dc.date.available	2013-12-04T09:21:02Z
dc.date.issued	2012-08
dc.description.abstract	The design of new buildings in the vicinity of railway lines must consider protection against noise and vibrations induced by railway traffic. However, the prediction methods available involve heavy numerical models which have frequency limitations. In this paper a prediction method combining finite elements (FEM) with natural mode analysis is presented for use in reinforced concrete buildings with heavy walls. The method considers 2D FEM models of the railway, ground and buildings to identify the transfer function of vibration from the railway to building foundations. Also 3D models of the buildings are considered to identify the transfer functions of vibration from foundations to walls and floors. Finally, as the impedance of heavy walls and floors is much higher than the acoustic impedance of air, the numerically assessed vibration fields of walls and floors are used to calculate sound fields in rooms by means of natural mode analysis. A set of in situ measurements were made in two different situations in order to calibrate the prediction method and also to identify the factors which most affect vibration and sound transmission.	por
dc.identifier.isbn	9781627485609
dc.identifier.other	AUT: ASC01550;
dc.identifier.uri	http://hdl.handle.net/10400.1/3217
dc.language.iso	eng	por
dc.peerreviewed	yes	por
dc.subject	Vibration	por
dc.subject	Sound	por
dc.title	Prediction of low frequency sound fields in buildings near railway lines	por
dc.type	conference object
dspace.entity.type	Publication
oaire.citation.conferencePlace	New York, USA	por
oaire.citation.endPage	3304	por
oaire.citation.startPage	3295	por
oaire.citation.title	41st international congress and exposition on noise control engineering – INTERNOISE 2012	por
person.familyName	Carreira
person.givenName	Ana
person.identifier.ciencia-id	2715-FE48-082C
person.identifier.orcid	0000-0003-3034-5627
person.identifier.rid	P-9668-2016
person.identifier.scopus-author-id	56346820600
rcaap.rights	openAccess	por
rcaap.type	conferenceObject	por
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relation.isAuthorOfPublication.latestForDiscovery	ebb142c7-d032-4030-85a6-a3f21cd536fa