1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 16272-3-1:2012Railway applications Track Noise barriers and related devices acting on airborne sound propagation Test method for determining the acoustic performancePart 3-
2、1: Normalized railway noise spectrum and single number ratings for diffuse field applicationsBS EN 16272-3-1:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 16272-3-1:2012.The UK participation in its preparation was entrusted to T e c h n i c a l C o m m i
3、t t e e R A E / 2 , R a i l w a y A p p l i c a t i o n s - T r a c k .A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct appl
4、ication. The British Standards Institution 2012. Published by BSI Standards Limited 2012.ISBN 978 0 580 74707 6 ICS 17.140.30; 93.100 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and S
5、trategy Committee on 30 November 2012.Amendments issued since publicationDate T e x t a f f e c t e dBS EN 16272-3-1:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16272-3-1 October 2012 ICS 93.100 English Version Railway applications - Track - Noise barriers and related devices acting on
6、airborne sound propagation - Test method for determining the acoustic performance - Part 3-1: Normalized railway noise spectrum and single number ratings for diffuse field applications Applications ferroviaires - Voie - Dispositifs de rduction du bruit - Mthode dessai pour la dtermination des perfor
7、mances acoustiques - Partie 3-1: Spectre de bruit ferroviaire normalis et indices uniques dvaluation pour des applications en champs diffus Bahnanwendungen - Oberbau - Lrmschutzwnde und verwandte Vorrichtungen zur Beeinflussung der Luftschallausbreitung - Prfverfahren zur Bestimmung der akustischen
8、Eigenschaften - Teil 3-1: Standardisiertes Schienenverkehrslrmspektrum und Einzahl-Angaben fr diffuse Schallfelder This European Standard was approved by CEN on 15 September 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
9、 European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official ve
10、rsions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austri
11、a, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden,
12、 Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Memb
13、ers. Ref. No. EN 16272-3-1:2012: EBS EN 16272-3-1:2012EN 16272-3-1:2012 (E) 2 Contents Page Foreword 3Introduction .41 Scope 52 Normative references 53 Terms and definitions .54 Normalised railway noise spectrum 55 Single-number rating of sound absorption DL.76 Single-number rating of airborne sound
14、 insulation DLR77 Expression of results 8Annex A (informative) Guidance note on use of the single-number rating of sound absorption DL9Annex B (informative) Guidance note on use of the single-number rating of airborne sound insulation DLR. 10BS EN 16272-3-1:2012EN 16272-3-1:2012 (E) 3 Foreword This
15、document (EN 16272-3-1:2012) has been prepared by Technical Committee CEN/TC 256 “Railway applications”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by Ap
16、ril 2013, and conflicting national standards shall be withdrawn at the latest by April 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent r
17、ights. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. This European Standard is one of the series EN 16272 “Railway applications Track Noise barriers and related devices acting on airborne sound propagation Test method
18、 for determining the acoustic performance“ as listed below: Part 1: Intrinsic characteristics Sound absorption in the laboratory under diffuse sound field conditions Part 2: Intrinsic characteristics Airborne sound insulation in the laboratory under diffuse sound field conditions Part 3-1: Normalize
19、d railway noise spectrum and single number ratings for diffuse field applications Part 3-2: Normalized railway noise spectrum and single number ratings for direct field applications 1) Part 4: Intrinsic characteristics In situ values of sound diffraction under direct sound field conditions 1) Part 5
20、: Intrinsic characteristics In situ values of sound reflection under direct sound field conditions 2) Part 6: Intrinsic characteristics In situ values of airborne sound insulation under direct sound field conditions 1) Part 7: Extrinsic characteristics In situ values of insertion loss 2)According to
21、 the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece
22、, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. 1) In preparation. 2) This document has been prepared as a CEN Technical Specification and is in pr
23、eparation. BS EN 16272-3-1:2012EN 16272-3-1:2012 (E) 4 Introduction This document is to be read in conjunction with EN 16272-1 and EN 16272-2 and should be applied only to situations as described in those documents (diffuse sound field). As the two main intrinsic acoustic characteristics of noise ba
24、rriers and related devices acting on airborne sound propagation in a diffuse sound field, sound absorption and airborne sound insulation are frequency dependent; and there is a need to define a reference railway noise spectrum for test purposes. This European Standard defines the basic properties of
25、 railway noise measured at the rail track side in terms of a characteristic normalised railway noise spectrum which is needed to evaluate single-number ratings of noise barriers and related devices acting on airborne sound propagation in reverberant conditions, e.g. inside tunnels or deep trenches.
26、This European Standard should be read in conjunction with: EN 16272-1, Railway applications Track Noise barriers and related devices acting on airborne sound propagation Test method for determining the acoustic performance Part 1: Intrinsic characteristics Sound absorption in the laboratory under di
27、ffuse sound field conditions; EN 16272-2, Railway applications Track Noise barriers and related devices acting on airborne sound propagation Test method for determining the acoustic performance Part 2: Intrinsic characteristics Airborne sound insulation in the laboratory under diffuse sound field co
28、nditions. BS EN 16272-3-1:2012EN 16272-3-1:2012 (E) 5 1 Scope This European Standard specifies a normalised railway noise spectrum for the evaluation and assessment of the acoustic performance of devices designed to reduce airborne railway noise near railways. All noise reducing devices that differ
29、from noise barriers and related devices acting on airborne sound propagation, e.g. devices for attenuation of ground borne vibration and on board devices, are out of the scope of this European Standard. 2 Normative references The following documents, in whole or in part, are normatively referenced i
30、n this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 16272-1, Railway applications Track Noise barriers and related devices acting
31、on airborne sound propagation Test method for determining the acoustic performance Part 1: Intrinsic characteristics Sound absorption in the laboratory under diffuse sound field conditions EN 16272-2, Railway applications Track Noise barriers and related devices acting on airborne sound propagation
32、Test method for determining the acoustic performance Part 2: Intrinsic characteristics Airborne sound insulation in the laboratory under diffuse sound field conditions 3 Terms and definitions For the purpose of this document, the following terms and definitions apply. 3.1 normalised railway noise sp
33、ectrum spectrum that is used for the calculation of the acoustic performance of noise barriers and related devices acting on airborne sound propagation near railways, in terms of single-number ratings of sound absorption and airborne sound insulation Note 1 to entry: The spectrum is expressed in ter
34、ms of relative A-weighted sound pressure levels in decibels, for one-third octave bands, Li, in the frequency range from 100 Hz to 5 kHz. 3.2 one-third octave bands level Lirelative A-weighted sound pressure levels in decibels, of a normalised railway noise spectrum for one-third octave bands with c
35、entre frequency fi4 Normalised railway noise spectrum The normalised railway noise spectrum shown in Table 1 shall be used to assess the acoustic performance of noise barriers and related devices acting on airborne sound propagation near railways. BS EN 16272-3-1:2012EN 16272-3-1:2012 (E) 6 Table 1
36、Normalised railway noise spectrum fiHz LirailwaysdB 100 - 27 125 - 25 160 - 23 200 - 21 250 - 19 315 - 17 400 - 15 500 - 13 630 - 12 800 - 11 1 000 - 10 1 250 - 9 1 600 -9 2 000 -9 2 500 - 9 3 150 - 10 4 000 - 13 5 000 - 17 BS EN 16272-3-1:2012EN 16272-3-1:2012 (E) 7 5 Single-number rating of sound
37、absorption DLA single-number rating shall be derived from frequency dependent data to indicate the performance of the product. The individual absorption coefficient values shall be weighted according to the normalised railway noise spectrum defined in Table 1. The single-number rating of sound absor
38、ption DL, in decibels, is given by: =1811,01811,010101lg10iLiLSiiiDL(1) where: Liis the relative A-weighted sound pressure level (dB) of the normalised railway noise spectrum, as defined in table 1, in the i-th one-third octave band; Siis the sound absorption coefficient value in the i-th one-third
39、octave band. In some cases, the ratio of the summation terms in Formula (1) can exceed 1 which precludes the calculation of DL. For this reason the maximum value of this ratio shall be limited to 0,99. NOTE Annex A provides guidance on the use of the single-number rating of sound absorption. 6 Singl
40、e-number rating of airborne sound insulation DLRA single-number rating shall be derived to indicate the performance of the product. The individual sound reduction index values shall be weighted according to the normalised traffic noise spectrum defined in Table 1. The single-number rating of airborn
41、e sound insulation DLR, in decibels, is given by: =1811,01811,01,0101010lg10iLiLRRiiiDL (2) where: Liis the relative A-weighted sound pressure level (dB) of the normalised railway noise spectrum, as defined in Table 1, in the i-th one-third octave band; Riis the airborne sound reduction index value
42、in the i-th one-third octave band. NOTE Annex B provides guidance on the use of the single-number rating of airborne sound insulation. BS EN 16272-3-1:2012EN 16272-3-1:2012 (E) 8 7 Expression of results If the single-number rating of sound absorption DLis to be reported, then this shall be done in t
43、he test report of the sound absorption measurement in the laboratory according to EN 16272-1. The single-number rating of sound absorption DLshall be reported after having been rounded to the nearest integer. If the single-number rating of airborne sound insulation DLRis to be reported, then this sh
44、all be done in the test report of the airborne sound insulation measurement in the laboratory according to EN 16272-2. The single-number rating of airborne sound insulation DLRshall be reported after being rounded to the nearest integer. BS EN 16272-3-1:2012EN 16272-3-1:2012 (E) 9 Annex A (informati
45、ve) Guidance note on use of the single-number rating of sound absorption DLThe use of the single-number rating DLis solely for the purposes of comparing the overall performance of noise barriers and related devices, irrespective of local conditions, rail traffic composition and track type. However,
46、presentation of results in one-third octave bands may be more informative than single number rating when selecting products. BS EN 16272-3-1:2012EN 16272-3-1:2012 (E) 10 Annex B (informative) Guidance note on use of the single-number rating of airborne sound insulation DLRThe use of the single-numbe
47、r rating DLRthen is solely for the purposes of comparing the overall performance of noise barriers and related devices, irrespective of local conditions, rail traffic composition and track type. However, presentation of results in one-third octave bands may be more informative than single number rat
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