1、December 2014 Translation by DIN-Sprachendienst.English price group 19No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).I
2、CS 93.100!%|$“2278901www.din.deDDIN EN 16272-6Railway applications Track Noise barriers and related devices acting on airborne soundpropagation Test method for determining the acoustic performance Part 6: Intrinsic characteristics In situ values of airborne soundinsulation under direct sound field c
3、onditions;English version EN 16272-6:2014,English translation of DIN EN 16272-6:2014-12Bahnanwendungen Oberbau Lrmschutzwnde und verwandte Vorrichtungen zur Beeinflussung derLuftschallausbreitung Prfverfahren zur Bestimmung der akustischen Eigenschaften Teil 6: Produktspezifische Merkmale In-situ-We
4、rte zur Luftschalldmmung in gerichtetenSchallfeldern;Englische Fassung EN 16272-6:2014,Englische bersetzung von DIN EN 16272-6:2014-12Applications ferroviaires Dispositifs de rduction du bruit Mthode dessai pour la dtermination des performances acoustiques Partie 6:Caractristiques intrinsques Valeur
5、s in situ de lisolation acoustique au bruit ariendans des conditions de champ acoustique direct;Version anglaise EN 16272-6:2014,Traduction anglaise de DIN EN 16272-6:2014-12www.beuth.deDocument comprises 48 pagesIn case of doubt, the German-language original shall be considered authoritative.11.14D
6、IN EN 16272-6:2014-12 2 A comma is used as the decimal marker. National foreword This document (EN 16272-6:2014) has been prepared by Technical Committee CEN/TC 256 “Railway applications” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the DIN-Normenausschuss
7、 Fahrweg und Schienenfahrzeuge (DIN Standards Committee Railway), Working Committee NA 087-00-01-11 UA Lrmschutzwnde an Schienenwegen. This standard is based on the English reference version. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16272-6 October 2014 ICS 17.140.30; 93.080.30 English V
8、ersion Railway applications - Track - Noise barriers and related devices acting on airborne sound propagation - Test method for determining the acoustic performance - Part 6: Intrinsic characteristics - In situ values of airborne sound insulation under direct sound field conditions Applications ferr
9、oviaires - Dispositifs de rduction du bruit -Mthode dessai pour la dtermination des performances acoustiques - Partie 6: Caractristiques intrinsques - Valeurs in situ de lisolation acoustique au bruit arien dans des conditions de champ acoustique direct Bahnanwendungen - Oberbau - Lrmschutzwnde und
10、verwandte Vorrichtungen zur Beeinflussung der Luftschallausbreitung - Prfverfahren zur Bestimmung der akustischen Eigenschaften - Teil 6: Produktspezifische Merkmale - In-situ-Werte zur Luftschalldmmung in gerichteten Schallfeldern This European Standard was approved by CEN on 30 April 2014. CEN mem
11、bers are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this 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 applicat
12、ion to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (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 Manage
13、ment Centre has the same status as the official versions. 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, Ireland, Italy, Latvia,
14、 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 Centre: Avenue Marnix
15、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. EN 16272-6:2014 EEN 16272-6:2014 (E) 2 Contents Page Foreword 4 Introduction . 5 1 Scope 8 2 Normative references 8 3 Terms and definitions . 8 4 Symbols and abb
16、reviations 13 5 Sound insulation index measurements . 15 5.1 General principle 15 5.2 Measured quantity . 15 5.3 Test arrangement . 16 5.4 Measuring equipment 20 5.4.1 Components of the measuring system . 20 5.4.2 Sound source . 21 5.4.3 Test signal 21 5.5 Data processing . 21 5.5.1 Calibration 21 5
17、.5.2 Sample rate . 22 5.5.3 Background noise 22 5.5.4 Scanning technique using a single microphone 22 5.5.5 Scanning technique using nine microphones 23 5.5.6 Adrienne temporal window . 23 5.5.7 Placement of the Adrienne temporal window . 24 5.5.8 Low frequency limit and sample size 25 5.6 Positioni
18、ng of the measuring equipment 26 5.6.1 Selection of the measurement positions 26 5.6.2 Post measurements . 27 5.6.3 Additional measurements . 27 5.6.4 Reflecting objects 27 5.6.5 Safety considerations . 27 5.7 Sample surface and meteorological conditions . 28 5.7.1 Condition of the sample surface 28
19、 5.7.2 Wind 28 5.7.3 Air temperature 28 6 Measurement uncertainty . 28 7 Measuring procedure 28 8 Test report 29 8.1 Expression of results 29 8.2 Further information 29 Annex A (informative) Measurement uncertainty 31 A.1 General 31 A.2 Expression for the calculation of sound insulation index 31 A.3
20、 Contributions to measurement uncertainty 32 A.4 Expanded uncertainty of measurement 33 A.5 Measurement uncertainty based upon reproducibility data . 33 Annex B (informative) Template of test report on airborne sound insulation of railway noise barriers . 34 DIN EN 16272-6:2014-12 EN 16272-6:2014 (E
21、) 3 B.1 Template of test report 34 B.2 Test setup (example) . 36 B.3 Test object and test situation (example) . 38 B.4 Results (example) 40 Bibliography 46 DIN EN 16272-6:2014-12 EN 16272-6:2014 (E) 4 Foreword This document (EN 16272-6:2014) has been prepared by Technical Committee CEN/TC 256 “Railw
22、ay 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 April 2015 and conflicting national standards shall be withdrawn at the latest by April 2
23、015. 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 document has been prepared under a mandate given to CEN by the European Comm
24、ission and the European Free Trade Association. This European Standard is one part 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 listed below: Part 1: Intrinsic chara
25、cteristics 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 ratings for diffuse field applications
26、; 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 Part 5: Intrinsic characteristics In situ values of sound reflection under direct sound fie
27、ld conditions (CEN/TS 16272-5); Part 6: Intrinsic characteristics In situ values of airborne sound insulation under direct sound field conditions. It will be read in conjunction with: EN 16272-2; EN 16272-3-1; EN 16272-3-2. According to the CEN-CENELEC Internal Regulations, the national standards or
28、ganizations 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, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembour
29、g, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 16272-6:2014-12 EN 16272-6:2014 (E) 5 Introduction Noise barriers installed along railways need to provide adequate sound insulation so that sound transmitt
30、ed directly through the device is not significant compared to the sound diffracted over the top. This European Standard specifies a test method for assessing the airborne sound insulation performance of noise barriers and related devices acting on airborne sound propagation designed for railways in
31、non-reverberant conditions (a measure of intrinsic performance). It can be applied in situ, i.e. where the noise barriers are installed. The method can be applied without damaging the surface. The method can be used to qualify products to be installed along railways as well as to verify the complian
32、ce of installed noise barriers to design specifications. Regular application of the method can be used to verify the long term performance of noise barriers. The method requires the averaging of results of measurements taken at different points behind the device under test. The method is able to inv
33、estigate flat and non-flat products. The measurement results of this method for airborne sound insulation are comparable but not identical with the results of the EN 16272-2 method, mainly because the present method uses a directional sound field, while the EN 16272-2 method assumes a diffuse sound
34、field (where all angles of incidence are equally probable). The test method described in this European Standard should not be used to determine the intrinsic characteristics of airborne sound insulation for noise barriers to be installed in reverberant conditions, e.g. inside tunnels or deep trenche
35、s or under covers or very close to the rail track. For the purpose of this European standard reverberant conditions are defined based on the geometric envelope, e, across the rail formed by the barriers, trench sides or buildings (the envelope does not include the railway surface) as shown by the da
36、shed lines in Figure 1. Conditions are defined as being reverberant when the percentage of open space in the envelope is less than or equal to 25 %, i.e.: Reverberant conditions occur when w/e 0,25, where e = (w + h1+ h2) This criterion is applied also to the open space between the train body and th
37、e barrier surface. DIN EN 16272-6:2014-12 EN 16272-6:2014 (E) 6 a) Partial cover on both sides of the railway; envelope, e = w + h1+ h2b) Partial cover on one side of the railway; e = w + h1c) Deep trench envelope, e = w + h1+ h2d) Tall barriers or buildings; envelope, e = w + h1+ h2e) Train passing
38、 close to a noise barrier envelope, e = w + h1+ h2f) Train passing close to a platform at the station, e = w + h1+ h2Key TOR Top of Rail (railway surface) w width of open space Figure 1 (not to scale) Sketch of the reverberant condition check in six cases This European Standard introduces a specific
39、 quantity, called sound insulation index, to define the airborne sound insulation of a noise barrier. This quantity should not be confused with the sound reduction index used in building acoustics, sometimes also called transmission loss. Research studies suggest that a very good correlation exists
40、DIN EN 16272-6:2014-12 EN 16272-6:2014 (E) 7 between data measured according to EN 16272-2 and data measured according to the method described in the present document. This method may be used to qualify noise barriers for other applications, e.g. to be installed along roads or nearby industrial site
41、s. In this case the single-number ratings should be calculated using an appropriate spectrum. DIN EN 16272-6:2014-12 EN 16272-6:2014 (E) 8 1 Scope This European Standard describes a test method for measuring a quantity representative of the intrinsic characteristics of airborne sound insulation for
42、railway noise barriers: the sound insulation index. The test method is intended for the following applications: determination of the intrinsic characteristics of airborne sound insulation of noise barriers to be installed along railways, to be measured either on typical installations alongside railw
43、ays or on a relevant sample section; determination of the in situ intrinsic characteristics of airborne sound insulation of noise barriers in actual use; comparison of design specifications with actual performance data after the completion of the construction work; verification of the long term perf
44、ormance of noise barriers (with a repeated application of the method); interactive design process of new products, including the formulation of installation manuals. The test method is not intended for the following applications: determination of the intrinsic characteristics of airborne sound insul
45、ation of noise barriers to be installed in reverberant conditions, e.g. inside tunnels or deep trenches or under covers. Results are expressed as a function of frequency in one-third octave bands, where possible, between 100 Hz and 5 kHz. If it is not possible to get valid measurement results over t
46、he whole frequency range indicated, the results will be given in a restricted frequency range and the reasons for the restriction(s) will be clearly reported. All noise reducing devices different from noise barriers and related devices acting on airborne sound propagation, e.g. devices for attenuati
47、on 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 in this document and are indispensable for its application. For dated references, only the edition cited a
48、pplies. For undated references, the latest edition of the referenced document (including any amendments) applies. 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 char
49、acteristics Airborne sound insulation in the laboratory under diffuse sound field conditions EN 16272-3-2, Railway applications Track Noise barriers and related devices acting on airborne sound propagation Test method for determining the acoustic performance Part 3-2: Normalized railway noise spectrum and single number ratings for direct field applications EN 61672-1, Electroacoustics Sound level meters Part 1: Specifications (IEC 61672-1) ISO/IEC Guide 98-3, Un
