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EN 15461:2008+A1:2010

(Main)

Railway applications - Noise emission - Characterisation of the dynamic properties of track sections for pass by noise measurements

Railway applications - Noise emission - Characterisation of the dynamic properties of track sections for pass by noise measurements

This European Standard specifies a method for characterizing the dynamic behaviour of the structure of a track relative to its contribution to the sound radiation associated with the rolling noise.
This European Standard describes a method for:
a)   acquiring data on mechanical frequency response functions on a track;
b)   processing measurement data in order to calculate an estimate of the vibration decay rates along the rails in an audible frequency range associated with the rolling noise;
c)   presenting this estimate for comparison with the lower limits of the decay rates.
It is applicable for evaluating the performance of sections of reference tracks for measuring railway vehicle noise within the framework of official approval tests.
The method is not applicable for characterizing the vibration behaviour of tracks on loadbearing structures such as bridges or embankments.

Bahnanwendungen - Schallemission - Charakterisierung der dynamischen Eigenschaften von Gleisabschnitten für Vorbeifahrtgeräuschmessungen

Diese Europäische Norm legt ein Verfahren zur Charakterisierung des dynamischen Verhaltens eines Gleises bezüglich seines Beitrags zum Rollgeräusch fest.
Diese Europäische Norm beschreibt ein Verfahren zur:
a)   Erhebung von Daten zur Impulsantwort eines Gleises;
b)   Weiterverarbeitung der Messdaten zur Abschätzung der Körperschallabklingraten in Gleislängsrichtung im akustisch wahrnehmbaren und auf die Rollgeräusche zurückzuführenden Frequenzbereich;
c)   Darstellung dieses Schätzwertes für eine Bewertung im Vergleich mit unteren Grenzkurven der Abklingrate.
Diese Norm ist anwendbar für die Prüfung der Eignung von Referenzgleisabschnitten zur Messung der Schallemission von Schienenfahrzeugen im Rahmen von Bauartzulassungsprüfungen.
Dieses Verfahren gilt nicht für die Charakterisierung des Schwingungsverhaltens von Gleisen auf Kunstbauten wie Brücken oder Dämmen.

Applications ferroviaires - Emission sonore - Caractérisation des propriétés dynamiques de sections de voie pour le mesurage du bruit au passage

La présente Norme Européenne spécifie une méthode de caractérisation du comportement dynamique de la
structure d’une voie, relativement à sa contribution au rayonnement sonore associée au bruit de roulement.
Cette Norme Européenne présente une méthode pour :
a) l’acquisition de données de fonctions de réponse en fréquence mécanique sur une voie ;
b) le traitement des données de mesurage en vue de calculer une estimation des taux de décroissance des
vibrations le long des rails dans une gamme de fréquences audibles associées au bruit de roulement ;
c) la présentation de cette estimation pour comparaison avec des limites inférieures de taux de décroissance.
Elle est applicable pour évaluer les performances de sections de voies de référence pour le mesurage du bruit des
véhicules ferroviaires dans le cadre d’essais d’homologation.
La méthode n’est pas applicable pour caractériser le comportement vibratoire de voies sur des structures porteuses
comme les ponts ou les remblais.

Železniške naprave - Hrup - Opis dinamičnih lastnosti tirnega odseka za merjenje hrupa vozečih vlakov

Ta evropski standard določa metodo za opis dinamičnih lastnosti strukture tirov glede na njen prispevek k zvočni radiaciji, povezani s kotalnim hrupom. Ta evropski standard opisuje metodo za: a) pridobivanje podatkov o mehanskih frekvenčno odzivnih funkcijah na tirih; b) obdelavo podatkov meritev za izračun ocene hitrosti zamiranja vibracij po tirih v slišnem frekvenčnem območju, povezanem s kotalnim hrupom; c) predstavitev te ocene primerjalno s spodnjimi mejami hitrosti zamiranja. Velja za ocenjevanje delovanja odsekov referenčnih tirov za merjenje hrupa železniških vozil v okviru uradnih homologacijskih preskusov. Metoda se ne uporablja za opis lastnosti vibracij tirov na nosilnih konstrukcijah, kot so mostovi ali nasipi.

General Information

Status
Published
Publication Date
02-Nov-2010
ICS
17.140.30 - Noise emitted by means of transport
93.100 - Construction of railways
Technical Committee
CEN/TC 256 - Railway applications
Drafting Committee
CEN/TC 256/WG 3 - Noise emission
Current Stage
9093 - Decision to confirm - Review Enquiry
Completion Date
03-Dec-2021
Directive
2008/57/EC - Directive 2008/57/EC of the European Parliament and of the Council of 17 June 2008 on the interoperability of the rail system within the Community (Recast)
Mandate
M/334 - Mandate for programming and standardisation addressed to CEN, CENELEC and ETSI in the field of the Interoperability of the trans-european conventional rail system
M/483 - Mandate for programming and standardisation addressed to the European standardisation bodies under directive 2008/57/EC in the field of the interoperability of the rail system within the European Union
Ref Project
SIST EN 15461:2008+A1:2010 - Railway applications - Noise emission - Characterisation of the dynamic properties of track sections for pass by noise measurements

Relations

Merged From
EN 15461:2008/FprA1 - Railway applications - Noise emission - Characterisation of the dynamic properties of track sections for pass by noise measurements
Effective Date
19-Jan-2023
Merged From
EN 15461:2008 - Railway applications - Noise emission - Characterisation of the dynamic properties of track sections for pass by noise measurements
Effective Date
18-Jan-2023

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bahnanwendungen - Schallemission - Charakterisierung der dynamischen Eigenschaften von Gleisabschnitten für VorbeifahrtgeräuschmessungenApplications ferroviaires - Emission sonore - Caractérisation des propriétés dynamiques de sections de voie pour le mesurage du bruit au passageRailway applications - Noise emission - Characterisation of the dynamic properties of track sections for pass by noise measurements45.060.01Železniška vozila na splošnoRailway rolling stock in general17.140.30Emisija hrupa transportnih sredstevNoise emitted by means of transportICS:Ta slovenski standard je istoveten z:EN 15461:2008+A1:2010SIST EN 15461:2008+A1:2010en,fr,de01-december-2010SIST EN 15461:2008+A1:2010SLOVENSKI
STANDARD



SIST EN 15461:2008+A1:2010



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15461:2008+A1
November 2010 ICS 17.140.30; 93.100 Supersedes EN 15461:2008English Version
Railway applications - Noise emission - Characterisation of the dynamic properties of track sections for pass by noise measurements
Applications ferroviaires - Emission sonore - Caractérisation des propriétés dynamiques de sections de voie pour le mesurage du bruit au passage
Bahnanwendungen - Schallemission - Charakterisierung der dynamischen Eigenschaften von Gleisabschnitten für Vorbeifahrtgeräuschmessungen This European Standard was approved by CEN on 28 December 2007 and includes Amendment 1 approved by CEN on 28 September 2010.
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 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 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15461:2008+A1:2010: ESIST EN 15461:2008+A1:2010



EN 15461:2008+A1:2010 (E) 2 Contents Page Foreword .3Introduction .41Scope .42Normative references .43Terms and definitions .54Symbols and abbreviations .65Principles .76Data acquisition .76.1Selection of the test section .76.2Position of the accelerometers .76.3Assembly of the accelerometers .86.4Excitation force .96.5Acquisition system .96.6Acquisition of the FRF .
...

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1.1   This document specifies a direct measurement method for characterizing the surface roughness of the rail and wheel associated with rolling noise ("acoustic roughness"), in the form of a one-third octave band spectrum.
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a)   selecting measuring positions along a track or selecting wheels of a vehicle;
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e)   presentation of this estimate for comparison with limits of acoustic roughness;
f)   comparison with a given upper limit in terms of a one-third octave band wavelength spectrum;
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c)   acceptance of the running surface condition only in the case where the acoustic roughness is the acceptance criterion;
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c)   approval of rail and wheel reprofiling, including rail grinding operations, except for those where the acoustic roughness is specifically the approval criterion (and not the grinding quality criteria as provided in e.g. EN 13231-3);
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The method can be used for the following purposes:
-   to measure track decay rates under operational conditions;
-   to characterize the effectiveness of noise control measures in terms of combined roughness, transfer function and track decay rate;
-   to compare the combined roughness before and after noise control measures are implemented (thereby quantifying the effect of any change in wheel or rail roughness);
-   to monitor wheel roughness during a pass-by, either of whole trains or parts of trains;
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-   to assess a threshold for the rail roughness by measuring multiple pass-bys.
The method is not for approval of sections of reference track in terms of acoustic rail roughness and track decay rates, which are covered by EN 15610 and EN 15461, respectively.
The method is applicable to trains on conventional tracks, i.e. normal ballasted tracks with wooden or concrete sleepers and on ballastless track systems.
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-   non-standard wheel types such as small wheels, resilient tram wheels;
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