BS PD CEN TS 16272-7-2015 Railway applications Track Noise barriers and related devices acting on airborne sound propagation Test method for determining the acoustic perfo.pdf

1、BSI Standards Publication Railway applications Track Noise barriers and related devices acting on airborne sound propagation Test method for determining the acoustic performance Part 7: Extrinsic characteristics In situ values of insertion loss PD CEN/TS 16272-7:2015National foreword This Published

2、Document is the UK implementation of CEN/TS 16272-7:2015. The UK participation in its preparation was entrusted to Technical Committee RAE/2, Railway Applications - Track. The UK committee draws users attention to the distinction between normative and informative elements, as defined in Clause 3 of

3、the CEN/CENELEC Internal Regulations, Part 3. Normative: Requirements conveying criteria to be fulfilled if compliance with the document is to be claimed and from which no deviation is permitted. Informative: Information intended to assist the understanding or use of the document. Informative annexe

4、s do not contain requirements, except as optional requirements, and are not mandatory. For example, a test method may contain requirements, but there is no need to comply with these requirements to claim compliance with the standard. When speeds in km/h require unit conversion for use in the UK, use

5、rs are advised to use equivalent values rounded to the nearest whole number. The use of absolute values for converted units should be avoided in these cases. Please refer to the table below for agreed conversion figures: A list of organizations represented on this committee can be obtained on reques

6、t to its secretary. This publication does not purport to include all the necessary provisions of a con- tract. Users are responsible for its correct application. The British Standards Institution 2015. Published by BSI Standards Limited 2015 ISBN 978 0 580 87233 4 ICS 93.100 Compliance with a Britis

7、h Standard cannot confer immunity from legal obligations. This Published Document was published under the authority of the Standards Policy and Strategy Committee on 31 October 2015. Amendments/corrigenda issued since publication Date Text affected PUBLISHED DOCUMENT PD CEN/TS 16272-7:2015 INS, RST

8、and ENE speed conversions km/h mph 53 100 60 200 125 National foreword This Published Document is the UK implementation of CEN/TS 16272-7:2015. The UK participation in its preparation was entrusted to Technical Committee RAE/2, Railway Applications - Track. The UK committee draws users attention to

9、the distinction between normative and informative elements, as defined in Clause 3 of the CEN/CENELEC Internal Regulations, Part 3. Normative: Requirements conveying criteria to be fulfilled if compliance with the document is to be claimed and from which no deviation is permitted. Informative: Infor

10、mation intended to assist the understanding or use of the document. Informative annexes do not contain requirements, except as optional requirements, and are not mandatory. For example, a test method may contain requirements, but there is no need to comply with these requirements to claim compliance

11、 with the standard. When speeds in km/h require unit conversion for use in the UK, users are advised to use equivalent values rounded to the nearest whole number. The use of absolute values for converted units should be avoided in these cases. Please refer to the table below for agreed conversion fi

12、gures: 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 con- tract. Users are responsible for its correct application. The British Standards Institution 2015. Published by

13、 BSI Standards Limited 2015 ISBN 978 0 580 87233 4 ICS 93.100 Compliance with a British Standard cannot confer immunity from legal obligations. This Published Document was published under the authority of the Standards Policy and Strategy Committee on 31 October 2015. Amendments/corrigenda issued si

14、nce publication Date Text affected PUBLISHED DOCUMENT PD CEN/TS 16272-7:2015 INS, RST and ENE speed conversions km/h mph 53 100 60 200 125 INS, RST and ENE speed conversions km/h mph 5 3 100 60 200 125 TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN/TS 16272-7 September 2

15、015 ICS 93.100 English Version Railway applications - Track - Noise barriers and related devices acting on airborne sound propagation - Test method for determining the acoustic performance - Part 7: Extrinsic characteristics - In situ values of insertion loss Applications ferroviaires - Voie - Dispo

16、sitifs de rduction du bruit - Mthode dessai pour la dtermination des performances acoustiques - Partie 7 : Caractristiques extrinsques - Valeurs in situ de la perte par insertion Bahnanwendungen - Oberbau - Lrmschutzwnde und verwandte Vorrichtungen zur Beeinflussung der Luftschallausbreitung - Prfve

17、rfahren zur Bestimmung der akustischen Eigenschaften - Teil 7: Fremdspezifische Merkmale - In-situ-Werte zur Einfgungsdmpfung This Technical Specification (CEN/TS) was approved by CEN on 17 August 2015 for provisional application. The period of validity of this CEN/TS is limited initially to three y

18、ears. After two years the members of CEN will be requested to submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard. CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS availa

19、ble promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached. CEN members are the national standards bodies of Austria, B

20、elgium, 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, Swi

21、tzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN natio

22、nal Members. Ref. No. CEN/TS 16272-7:2015 E PD CEN/TS 16272-7:2015CEN/TS 16272-7:2015 (E) 2 Contents Page European foreword . 4 Introduction 5 1 Scope 6 2 Normative references 6 3 Terms and definitions . 7 4 Symbols and abbreviations . 9 5 Methods . 10 5.1 General . 10 5.2 Direct measurement method

23、 10 5.3 Indirect measurement method . 10 6 Instrumentation . 10 6.1 Sound level meter and analyzer . 10 6.2 Sound calibrator . 10 6.3 Windscreen 11 6.4 Other instrumentation system 11 6.5 Meteorological equipment 11 7 Acoustic environment 11 7.1 General . 11 7.2 Terrain profile and ground surface e

24、quivalence 11 7.3 Meteorological conditions 12 7.3.1 General . 12 7.3.2 Wind 12 7.3.3 Temperature 13 7.3.4 Humidity 13 7.3.5 Cloud cover . 13 7.3.6 Others . 14 7.3.7 Background noise 14 8 Sources and source equivalence . 14 8.1 Source type . 14 8.1.1 General . 14 8.1.2 Source type A . 14 8.1.3 Sourc

25、e type B . 14 8.1.4 Source type C 14 8.2 Source equivalence 15 8.2.1 General . 15 8.2.2 Operational parameters 16 8.2.3 Reference microphone position . 16 9 Measurement procedure . 17 9.1 General planning 17 9.1.1 Measurement . 17 9.1.2 Receiver positions 17 9.1.3 Quantities to be measured 17 PD CEN

26、/TS 16272-7:2015CEN/TS 16272-7:2015 (E) 2 Contents Page European foreword . 4 Introduction 5 1 Scope 6 2 Normative references 6 3 Terms and definitions . 7 4 Symbols and abbreviations . 9 5 Methods . 10 5.1 General . 10 5.2 Direct measurement method . 10 5.3 Indirect measurement method . 10 6 Instru

27、mentation . 10 6.1 Sound level meter and analyzer . 10 6.2 Sound calibrator . 10 6.3 Windscreen 11 6.4 Other instrumentation system 11 6.5 Meteorological equipment 11 7 Acoustic environment 11 7.1 General . 11 7.2 Terrain profile and ground surface equivalence 11 7.3 Meteorological conditions 12 7.3

28、1 General . 12 7.3.2 Wind 12 7.3.3 Temperature 13 7.3.4 Humidity 13 7.3.5 Cloud cover . 13 7.3.6 Others . 14 7.3.7 Background noise 14 8 Sources and source equivalence . 14 8.1 Source type . 14 8.1.1 General . 14 8.1.2 Source type A . 14 8.1.3 Source type B . 14 8.1.4 Source type C 14 8.2 Source eq

29、uivalence 15 8.2.1 General . 15 8.2.2 Operational parameters 16 8.2.3 Reference microphone position . 16 9 Measurement procedure . 17 9.1 General planning 17 9.1.1 Measurement . 17 9.1.2 Receiver positions 17 9.1.3 Quantities to be measured 17 PD CEN/TS 16272-7:2015 CEN/TS 16272-7:2015 (E) 3 9.2 Det

30、ermination of barrier insertion loss . 18 9.2.1 Direct measurement method . 18 9.2.2 Indirect measurement method 18 10 Measurement uncertainty . 19 11 Test report 19 11.1 Information to be recorded. 19 11.1.1 Type of method 19 11.1.2 Instrumentation 19 11.1.3 Acoustic environment . 19 11.1.4 Sound s

31、ource 19 11.1.5 Barrier to be tested 19 11.1.6 Site layout 19 11.1.7 Acoustical data . 20 11.2 Expression of results . 20 11.3 Further information 20 Annex A (informative) Measurement uncertainty . 21 A.1 General . 21 A.2 Measurement uncertainty based upon reproducibility data . 21 Bibliography . 22

32、 PD CEN/TS 16272-7:2015CEN/TS 16272-7:2015 (E) 4 European foreword This document (CEN/TS 16272-7:2015) has been prepared by Technical Committee CEN/TC 256 “Railway applications”, the secretariat of which is held by DIN. Attention is drawn to the possibility that some of the elements of this document

33、 may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This Technical Specification is one of the series EN 16272, Railway applications Track Noise barriers and related devices acting on airborne sound propagation Test me

34、thod 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: Nor

35、malized 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; Part 4: Intrinsic characteristics In situ values of sound diffraction under direct sound field conditions curr

36、ently at Enquiry stage; Part 5: Intrinsic characteristics In situ values of sound reflection under direct sound field conditions; Part 6: Intrinsic characteristics In situ values of airborne sound insulation under direct sound field conditions; Part 7: Extrinsic characteristics In situ values of ins

37、ertion loss the present document. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugo

38、slav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. PD CEN/TS 16272-7:2015CEN/TS 16272-7:2015 (E) 4

39、European foreword This document (CEN/TS 16272-7:2015) has been prepared by Technical Committee CEN/TC 256 “Railway applications”, the secretariat of which is held by DIN. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or

40、CENELEC shall not be held responsible for identifying any or all such patent rights. This Technical Specification is one of the series EN 16272, Railway applications Track Noise barriers and related devices acting on airborne sound propagation Test method for determining the acoustic performance, as

41、 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: Normalized railway noise spectrum and single number

42、ratings for diffuse field applications; Part 3-2: Normalized railway noise spectrum and single number ratings for direct field applications; Part 4: Intrinsic characteristics In situ values of sound diffraction under direct sound field conditions currently at Enquiry stage; Part 5: Intrinsic charact

43、eristics In situ values of sound reflection under direct sound field conditions; Part 6: Intrinsic characteristics In situ values of airborne sound insulation under direct sound field conditions; Part 7: Extrinsic characteristics In situ values of insertion loss the present document. According to th

44、e CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Gree

45、ce, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. PD CEN/TS 16272-7:2015 CEN/TS 16272-7:2015 (E) 5 Introduction The purpose of insertion loss measu

46、rements is to have an indication of the “efficiency” of the complete installation in attenuating noise from a technical point of view, as is usually done with calculations. The insertion loss is not intended to compare products; in fact, it is site-dependent, so that the same product may give differ

47、ent results when installed on different sites. In order to be representative, these measurements need to be done in well-defined conditions regarding: the noise source (number and type of trains, speed, etc.); the meteorological window; the measurement time; the reference time, i.e. the time over wh

48、ich the measured insertion loss is evaluated based on the measurement results. When it is not possible to carry out measurements before the construction of the noise barrier, an “equivalent” site is used for the “before” measurements. The assessment of insertion loss limiting values is out of the sc

49、ope of this Technical Specification. PD CEN/TS 16272-7:2015CEN/TS 16272-7:2015 (E) 6 1 Scope This Technical Specification specifies methods for the determination of insertion loss of outdoor noise barriers intended to shield railway noise. It specifies detailed procedures for in situ measurement of barrier insertion loss including microphone positions, source conditions and acoustic environments of the measurement sites. This Technical Specification allows one to me