CEN TS 16272-5-2014 Railway applications - Track - Noise barriers and related devices acting on airborne sound propagation - Test method for determining the acoustic performance - .pdf
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1、BSI Standards PublicationPD CEN/TS 16272-5:2014Railway applications Track Noise barriers and relateddevices acting on airbornesound propagation Testmethod for determining theacoustic performancePart 5: Intrinsic characteristics In situvalues of sound reflection under directsound field conditionsPD C
2、EN/TS 16272-5:2014 PUBLISHED DOCUMENTNational forewordThis Published Document is the UK implementation of CEN/TS16272-5:2014.The UK participation in its preparation was entrusted to TechnicalCommittee RAE/2, Railway Applications - Track.A list of organizations represented on this committee can beobt
3、ained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 76214 7ICS 93.100Compliance with a
4、British Standard cannot confer immunity fromlegal obligations.This Published Document was published under the authority of theStandards Policy and Strategy Committee on 31 May 2014.Amendments issued since publicationDate Text affectedPD CEN/TS 16272-5:2014TECHNICAL SPECIFICATION SPCIFICATION TECHNIQ
5、UE TECHNISCHE SPEZIFIKATION CEN/TS 16272-5 April 2014 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 5: Intrinsic characteristics - In situ values of sound
6、 reflection under direct sound field conditions Applications ferroviaires - Voie - Dispositifs de rduction du bruit - Mthode dessai pour la dtermination des performances acoustiques - Partie 5: Valeurs in situ de la rflexion acoustique dans des conditions de champ acoustique direct Bahnanwendungen -
7、 Oberbau - Lrmschutzwnde und verwandte Vorrichtungen zur Beeinflussung der Luftschallausbreitung - Prfverfahren zur Bestimmung der akustischen Eigenschaften - Teil 5: Produktspezifische Merkmale - In-situ-Werte zur Schallreflexion in gerichteten Schallfeldern This Technical Specification (CEN/TS) wa
8、s approved by CEN on 26 February 2013 for provisional application. The period of validity of this CEN/TS is limited initially to three years. 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 Europea
9、n 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 available 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
10、 decision about the possible conversion of the CEN/TS into an EN is reached. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Irel
11、and, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Cen
12、tre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TS 16272-5:2014 EPD CEN/TS 16272-5:2014CEN/TS 16272-5:2014 (E) 2 Contents Foreword 4 Introduction . 5 1 Scope 7 2 Normative references 7 3
13、 Terms and definitions . 7 4 Symbols and abbreviations 10 5 Sound reflection index measurements . 11 5.1 General principle 11 5.2 Measured quantity . 11 5.3 Test arrangement . 12 5.4 Measuring equipment 16 5.4.1 Components of the measuring system . 16 5.4.2 Sound source . 17 5.4.3 Test signal 17 5.5
14、 Data processing . 18 5.5.1 Calibration 18 5.5.2 Sample rate . 18 5.5.3 Background noise 18 5.5.4 Signal subtraction technique . 18 5.5.5 Adrienne temporal window . 19 5.5.6 Placement of the Adrienne temporal window . 21 5.5.7 Low frequency limit and sample size 21 5.6 Positioning of the measuring e
15、quipment 22 5.6.1 Maximum sampled area 22 5.6.2 Selection of the measurement positions 23 5.6.3 Reflecting objects 27 5.6.4 Safety considerations . 27 5.7 Sample surface and meteorological conditions . 27 5.7.1 Condition of the sample surface 27 5.7.2 Wind 27 5.7.3 Air temperature 28 5.8 Measurement
16、 uncertainty . 28 5.9 Measuring procedure 28 5.10 Test report 29 Annex A (informative) Measurement uncertainty . 30 A.1 General 30 A.2 Expression for the calculation of sound reflection index . 30 A.3 Contributions to measurement uncertainty 31 A.4 Expanded uncertainty of measurement 31 A.5 Measurem
17、ent uncertainty based upon reproducibility data . 32 Annex B (informative) Template of test report on sound reflection of railway noise barriers 33 B.1 Template of test report 33 B.2 Test setup (example) . 34 PD CEN/TS 16272-5:2014CEN/TS 16272-5:2014 (E) 3 B.3 Test object and test situation (example
18、) . 35 B.4 Results (example) 37 B.4.1 Part 1 Results in tabular form . 37 B.4.2 Part 2 Results in graphic form 38 Bibliography 39 PD CEN/TS 16272-5:2014CEN/TS 16272-5:2014 (E) 4 Foreword This document (CEN/TS 16272-5:2014) has been prepared by Technical Committee CEN/TC 256 “Railway applications”, t
19、he 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 CENELEC shall not be held responsible for identifying any or all such patent rights. This Technical Specification is one of the ser
20、ies EN 16272 “Railway applications Track Noise barriers and related devices acting on airborne sound propagation Test method for determining the acoustic performance” as listed below: Part 1: Intrinsic characteristics Sound absorption in the laboratory under diffuse sound field conditions Part 2: In
21、trinsic characteristics Airborne sound insulation in the laboratory under diffuse sound field conditions Part 3-1: Normalized 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 applica
22、tions Part 4: Intrinsic characteristics In situ values of sound diffraction under direct sound field conditions 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
23、 direct sound field conditions Part 7: Extrinsic characteristics In situ values of insertion loss It 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
24、 Part 1: Intrinsic characteristics Sound absorption in the laboratory under diffuse sound field conditions EN 16272-3-1, Railway applications Track Noise barriers and related devices acting on airborne sound propagation Test method for determining the acoustic performance Part 3-1: Normalized railwa
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