SIST EN 16272-6:2015
(Main)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
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
This European Standard describes a test method for measuring a quantity representative of the intrinsic characteristics of airborne sound insulation for 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 railways 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 performance 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 insulation 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 the 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 attenuation of ground borne vibration and on board devices are out of the scope of this European Standard.
Bahnanwendungen - Oberbau - Lärmschutzwände und verwandte Vorrichtungen zur Beeinflussung der Luftschallausbreitung - Prüfverfahren zur Bestimmung der akustischen Eigenschaften - Teil 6: Produktspezifische Merkmale - In-situ-Werte zur Luftschalldämmung in gerichteten Schallfeldern
Diese Europäische Norm beschreibt ein Prüfverfahren zur Messung einer Größe, die für die produktspezifischen Merkmale der Luftschalldämmung von Eisenbahnlärmschutzwänden charakteristisch ist: den Schalldämmungsindex.
Das Prüfverfahren ist für die folgenden Anwendungen vorgesehen:
- Bestimmung der produktspezifischen Merkmale der Luftschalldämmung von Lärmschutzwänden, die entlang von Eisenbahnschienenwegen aufgebaut sind, und die entweder an typischen an Eisenbahnen ausgeführten Lärmschutzwänden oder an einer exemplarischen Musterwand zu messen sind;
- Bestimmung der in situ gegebenen produktspezifischen Merkmale der Luftschalldämmung von Lärmschutzwänden im tatsächlichen Einsatz;
- Vergleich der Bemessungsfestlegungen mit den tatsächlichen Leistungsdaten nach Abschluss der Bau-arbeiten;
- Überprüfung der Langzeitwirksamkeit von Lärmschutzwänden (durch wiederholtes Anwenden des Verfahrens);
- interaktiver Bemessungsprozess von neuen Produkten, einschließlich der Formulierung von Aufbauanleitungen.
Das Prüfverfahren ist nicht für die folgenden Anwendungen vorgesehen:
- Bestimmung der produktspezifischen Eigenschaften der Luftschalldämmung von Lärmschutzwänden, die in halligen Schallfeldern einzubauen sind, z. B. innerhalb von Tunneln oder in ausgeprägten Tieflagen oder unter Abdeckungen.
Ergebnisse werden als Funktion der Frequenz in Terzbändern zwischen 100 Hz und 5 kHz angegeben, wo möglich. Falls kein gültiges Messergebnis über den gesamten Frequenzbereich zu gewinnen ist, müssen die Ergebnisse im eingeschränkten Frequenzbereich zusammen mit den Gründen der Einschränkung(en) eindeutig angegeben werden.
Alle Lärmminderungsvorrichtungen, die nicht zu Lärmschutzwänden und verwandten Vorrichtungen gegen Schallübertragung gehören, z. B. Vorrichtungen zur Verminderung von Erdbodenerschütterungen oder mittransportierte Vorrichtungen, gehören nicht zum Anwendungsbereich dieser Europäischen Norm.
Applications ferroviaires - Dispositifs de réduction du bruit - Méthode d'essai pour la détermination des performances acoustiques - Partie 6 : Caractéristiques intrinsèques - Valeurs in situ de l'isolation acoustique au bruit aérien dans des conditions de champ acoustique direct
La présente Norme européenne décrit une méthode d'essai permettant de mesurer une grandeur représentative des caractéristiques intrinsèques de l'isolation acoustique aux bruits aériens des écrans antibruit installés le long des voies ferrées : l'indice d'isolation acoustique.
La méthode d'essai est destinée aux applications suivantes :
- détermination des caractéristiques intrinsèques de l'isolation acoustique aux bruits aériens des écrans antibruit devant être installés le long des voies ferrées et devant être mesurés soit sur des installations types le long des voies ferrées soit sur un tronçon représentatif approprié ;
- la détermination des caractéristiques intrinsèques in situ de l'isolation acoustique aux bruits aériens des écrans antibruit en service ;
- la comparaison des spécifications de conception avec les données de performance réelles de l'ouvrage de construction achevé ;
- la vérification des performances à long terme des écrans antibruit (par l'application répétée de la méthode) ;
- un processus interactif de nouveaux produits, y compris l'élaboration de manuels d'installation.
La méthode d'essai n'est pas destinée aux applications suivantes :
- la détermination des caractéristiques intrinsèques d'isolation acoustique aux bruits aériens des écrans antibruit destinés à être installés dans des conditions de champ réverbéré, par exemple à l'intérieur des tunnels, au fond des tranchées profondes ou sous des couvertures.
Les résultats sont exprimés en fonction de la fréquence, par bandes de tiers d'octave, si possible, entre 100 Hz et 5 kHz. S'il est impossible d'obtenir des résultats de mesure valables sur toute la gamme de fréquences indiquée, les résultats seront donnés pour une gamme de fréquences réduite et les raisons de la ou des restrictions seront clairement consignées.
Tous les dispositifs de réduction du bruit autres que les écrans antibruit et dispositifs apparentés agissant sur la propagation du bruit aérien, comme par exemple les dispositifs d'atténuation des vibrations transmises par le sol et les dispositifs embarqués, ne relèvent pas du domaine d'application de la présente Norme européenne.
Železniške naprave - Zgornji ustroj proge - Protihrupne ovire in pripadajoče naprave, ki vplivajo na širjenje zvoka v zraku - Preskusna metoda za ugotavljanje akustičnih lastnosti - 6. del: Specifične karakteristike - Terenske vrednosti izolacije zvoka v zraku pri usmerjenem zvočnem polju
Ta dokument določa preskusno metodo za merjenje količine, ki predstavlja bistvene lastnosti izolacije zvoka v zraku pri protihrupnih ovirah za železniški promet, tj. indeksa izolacije zvoka. Vse protihrupne naprave, ki ne spadajo med protihrupne ovire in pripadajoče naprave za zmanjšanje talnih vibracij in naprave v vozilih, niso zajete v tem dokumentu.
General Information
- Status
- Withdrawn
- Public Enquiry End Date
- 24-Jan-2013
- Publication Date
- 24-Nov-2014
- Withdrawal Date
- 07-Jan-2024
- Technical Committee
- IŽNP - Reilway applications
- Current Stage
- 9900 - Withdrawal (Adopted Project)
- Start Date
- 04-Jan-2024
- Due Date
- 27-Jan-2024
- Completion Date
- 08-Jan-2024
Relations
- Effective Date
- 01-Feb-2024
Frequently Asked Questions
SIST EN 16272-6:2015 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "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". This standard covers: This European Standard describes a test method for measuring a quantity representative of the intrinsic characteristics of airborne sound insulation for 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 railways 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 performance 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 insulation 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 the 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 attenuation of ground borne vibration and on board devices are out of the scope of this European Standard.
This European Standard describes a test method for measuring a quantity representative of the intrinsic characteristics of airborne sound insulation for 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 railways 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 performance 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 insulation 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 the 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 attenuation of ground borne vibration and on board devices are out of the scope of this European Standard.
SIST EN 16272-6:2015 is classified under the following ICS (International Classification for Standards) categories: 17.140.30 - Noise emitted by means of transport; 45.020 - Railway engineering in general. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 16272-6:2015 has the following relationships with other standards: It is inter standard links to SIST EN 16272-6:2024. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 16272-6:2015 is associated with the following European legislation: Standardization Mandates: M/024. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
You can purchase SIST EN 16272-6:2015 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.SULSDGDMRþHBahnanwendungen - Oberbau - Lärmschutzwände und verwandte Vorrichtungen zur Beeinflussung der Luftschallausbreitung - Prüfverfahren zur Bestimmung der akustischen Eigenschaften - Teil 6: Produktspezifische Merkmale - In-situ-Werte zur Luftschalldämmung in gerichteten SchallfeldernApplications ferroviaires - Dispositifs de réduction du bruit - Méthode d'essai pour la détermination des performances acoustiques - Partie 6 : Caractéristiques intrinsèques - Valeurs in situ de l'isolation acoustique au bruit aérien dans des conditions de champ acoustique directRailway 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 conditions45.020Železniška tehnika na splošnoRailway engineering in general17.140.30Emisija hrupa transportnih sredstevNoise emitted by means of transportICS:Ta slovenski standard je istoveten z:EN 16272-6:2014SIST EN 16272-6:2015en,fr,de01-januar-2015SIST EN 16272-6:2015SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16272-6
October 2014 ICS 17.140.30; 93.080.30 English Version
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 ferroviaires - Dispositifs de réduction du bruit -Méthode d'essai pour la détermination des performances acoustiques - Partie 6 : Caractéristiques intrinsèques - Valeurs in situ de l'isolation acoustique au bruit aérien dans des conditions de champ acoustique direct
Bahnanwendungen - Oberbau - Lärmschutzwände und verwandte Vorrichtungen zur Beeinflussung der Luftschallausbreitung - Prüfverfahren zur Bestimmung der akustischen Eigenschaften - Teil 6: Produktspezifische Merkmale - In-situ-Werte zur Luftschalldämmung in gerichteten Schallfeldern This European Standard was approved by CEN on 30 April 2014.
CEN members 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 application 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 Management 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, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
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. EN 16272-6:2014 ESIST EN 16272-6:2015
Measurement uncertainty . 31 A.1 General . 31 A.2 Expression for the calculation of sound insulation index . 31 A.3 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 SIST EN 16272-6:2015
a) Partial cover on both sides of the railway; envelope, e = w + h1 + h2 b) Partial cover on one side of the railway; e = w + h1
c) Deep trench envelope, e = w + h1 + h2 d) Tall barriers or buildings; envelope, e = w + h1 + h2
e) Train passing close to a noise barrier envelope, e = w + h1 + h2 f) Train passing close to a platform at the station, e = w + h1 + h2 Key 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 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 SIST EN 16272-6:2015
Key 1 axis of rotation dRS distance between the axis of rotation and the loudspeaker front panel [m] 2 loudspeaker front panel hB noise barrier height [m] 3 source reference plane
hS reference height [m] dS reference distance [m]
Figure 2 — (not to scale) Sketch of the loudspeaker in front of the noise barrier under test for sound insulation index measurements SIST EN 16272-6:2015
Key hB noise barrier height [m] s half the side length of the measurement grid [m] hS reference height [m]
Figure 3 — Measurement grid for sound insulation index measurements (receiver side) and numbering of the measurement points (not to scale)
Key 1 sound source reference plane
hS reference height [m] 2 microphone reference plane
tB noise barrier thickness [m] hB
noise barrier height [m]
Figure 4 — (not to scale) Sound source and microphone reference planes (side view) SIST EN 16272-6:2015
Key 1 measurement grid
hS reference height [m] hB noise barrier height [m] dS horizontal distance from the loudspeaker front panel to the source reference plane [m] dM horizontal distance from the measurement grid to the microphone reference plane [m] s half the side length of the measurement grid [m] Figure 5 — (not to scale) Placement of the sound source and measurement grid for sound insulation index measurement (side view)
Key 1 measurement grid
dT dT = dS + tB + dM see Formula (3) 2 loudspeaker front panel
hS
reference height [m] dM horizontal distance from the measurement grid to the microphone reference plane [m] tB noise barrier thickness [m] dS horizontal distance from the loudspeaker front panel to the source reference plane [m]
Figure 6 — (not to scale) Sketch of the set-up for the reference “free-field” sound measurement for the determination of the sound insulation index 4 Symbols and abbreviations For the purposes of this document, the following symbols and abbreviations apply. SIST EN 16272-6:2015
5 Sound insulation index measurements 5.1 General principle The sound source emits a transient sound wave that travels towards the device under test and is partly reflected, partly transmitted and partly diffracted by it. The microphone placed on the other side of the device under test receives both the transmitted sound pressure wave travelling from the sound source through the device under test, and the sound pressure wave diffracted by the top edge of the device under test (for the test be meaningful the diffraction from the lateral edges should be sufficiently delayed). If the measurement is repeated without the device under test between the loudspeaker and the microphone, the direct free-field wave can be acquired. The power spectra of the direct wave and the transmitted wave give the basis for calculating the sound insulation index. The sound insulation index shall be the logarithmic average of the values measured at nine points placed on the measurement grid (scanning points). See Figure 3 and Formula (1). The measurement shall take place in a sound field free from reflections within the Adrienne temporal window. For this reason, the acquisition of an impulse response having peaks as sharp as possible is recommended: in this way, the reflections coming from other surfaces can be identified from their delay time and rejected. 5.2 Measured quantity The expression used to compute the sound insulation index SI as a function of frequency, in one-third octave bands, is: ()()[]()()[]×−=∑∫∫=∆∆nkfikikftktkjjjdftwthFdftwthFnSI1221lg10 (1) where: hik(t) is the incident reference component of the free-field impulse response at the k-th scanning point; htk(t) is the transmitted component of the impulse response at the k-th scanning point; wik(t) is the time window (Adrienne temporal window) for the incident reference component of the free-field impulse response at the k-th scanning point; wtk(t) is the time window (Adrienne temporal window) for the transmitted component at the k-th scanning point; F is the symbol of the Fourier transform; j is the index of the j-th one-third octave frequency band (between 100 Hz and 5 kHz); ûfj is the width of the j-th one-third octave frequency band; n = 9 is the number of scanning points. SIST EN 16272-6:2015
a) Sound insulation index measurements for elements and posts b) Sound insulation index measurements in front of a post only
c) Sound insulation index measurements in front of a sample having a post separation smaller than 4 m Key dotted circles: tested area for posts L distance between two posts
thin circles: tested area for elements Ltot overall minimum length [m] hB barrier height [m]
Figure 7 — Sketch of the minimum sample required for measurements in laboratory conditions SIST EN 16272-6:2015
Key 1 measurement grid
hB noise barrier height [m] 2 loudspeaker front panel hS reference height [m] dM
distance nois barrier to measurment = 0,25 m tB noise barrier thickness [m] dS
distance noise barrier to speaker = 1 m
Figure 8 — (not to scale) Sketch of the set-up for the sound insulation index measurement — Normal incidence of sound on the sample — Transmitted component measurement in front of a flat noise barrier
a) Transmitted component measurements in front of a concave noise barrier SIST EN 16272-6:2015
b) Transmitted component measurements in front of a convex noise barrier
c) Transmitted component measurements in front of an inclined noise barrier Key 1 measurement grid
hB noise barrier height [m] 2 loudspeaker front panel hS reference height [m] dS distance noise barrier to speaker = 1 m tB noise barrier thickness [m] dM distance noise barrier to measurement = 0,25 m
Figure 9 — (not to scale - informative) Examples of the set-up for the sound insulation index measurement — Normal incidence of sound on the sample SIST EN 16272-6:2015
Figure 10 — Sketch representing the essential components of the measuring system 5.4 Measuring equipment 5.4.1 Components of the measuring system The measuring equipment shall comprise: an electro-acoustic system, consisting of an electrical signal generator, a power amplifier and a loudspeaker, a single microphone (or nine microphones) with its (their) microphone amplifier(s) and a signal analyser capable of performing transformations between the time domain and the frequency domain. NOTE Some of these components can be integrated into a frequency analyser or a personal computer equipped with specific add-on board(s). The essential components of the measuring system are shown in Figure 10. SIST EN 16272-6:2015
tB is the barrier thickness (see 3.10) Care shall be taken that the supporting frame does not alter the measurement result. 5.5.6 Adrienne temporal window For the purpose of this European Standard, windowing operations in the time domain shall be performed using a temporal window, called Adrienne temporal window, with the following specifications (see Figure 11): — a leading edge having a left-half Blackman-Harris shape and a total length of 0,5 ms (“pre-window”); — a flat portion having a total length of 5,18 ms (“main body”); — a trailing edge having a right-half Blackman-Harris shape and a total length of 2,22 ms. The total length of the Adrienne temporal window is 97,,=ADRWT ms. NOTE A four-term full Blackman-Harris window of length TW,BH is: ()−+−=BHWBHWBHWTtaTtaTtaatw,,,coscoscosπππ6423210 (4) SIST EN 16272-6:2015
Key 1 marker point MP X
time [ms] Y
adrienne window function w(t) [relative units] Figure 11 — The Adrienne temporal window, with the marker point MP If the window length ADRWT, has to be varied (this occurs only in exceptional cases) the lengths of the flat portion and the right-half Blackman-Harris portion shall have a ratio of 7/3. As an example, when testing very large samples the window length can be enlarged in order to achieve a better low frequency limit. The point where the flat portion of the Adrienne temporal window begins is called the marker point (MP). 5.5.7 Placement of the Adrienne temporal window For the “free-field” direct component, the Adrienne temporal window shall be placed as follows: — the first peak of the impulse response, corresponding to the direct component, is detected; — a time instant preceding the direct component peak of 0,2 ms is located; SIST EN 16272-6:2015
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