1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Railway applications - Track - Noise barriers and related devices acting on airborne sound propagation - Procedures for assessing long term performancePart 2: Non-acoustic characteristicsBS EN 16951-2:2018National forew
2、ordThis British Standard is the UK implementation of EN 16951-2:2018.The UK participation in its preparation was entrusted to Technical Committee RAE/2, Railway Applications - Track.A list of organizations represented on this committee can be obtained on request to its secretary.This publication doe
3、s not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 93122 2ICS 93.100Compliance with a British Standard cannot confer immunity from legal o
4、bligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 16951-2:2018EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 16951-2June 2018ICS 93
5、.100EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2018 CEN Ref. No. EN 16951-2:2018: EAll rights of exploitation in any form and by any means reserved worldwide for CEN national Membe
6、rsRailway applications - Track - Noise barriers and related devices acting on airborne sound propagation - Procedures for assessing long term performance - Part 2: Non-acoustic characteristicsApplications ferroviaires - Voie - crans antibruit et dispositifs connexes influant sur la propagation arien
7、ne du son - Mthodes dvaluation des performances long terme - Partie 2 : Caractristiques non acoustiquesBahnanwendungen - Oberbau - Lrmschutzwnde und verwandte Vorrichtungen zur Beeinflussung der Luftschallausbreitung - Bewertungsverfahren fr das Langzeitverhalten - Teil 2: Nicht akustische MerkmaleT
8、his European Standard was approved by CEN on 2 February 2018.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 refer
9、ences 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
10、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,
11、France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.English VersionEN 16951-2:2018 (E)European foreword iiiIntroduction v1 Sc
12、ope . 62 Normative references 63 Terms and definitions . 74 Requirements 75 Report 9Annex A (normative) Rail side exposure Classification of environmental conditions .10Annex B (informative) Material standards13Bibliography .16iiContents PageBS EN 16951-2:2018EN 16951-2:2018 (E)European forewordThis
13、 document (EN 16951-2:2018) has been prepared by Technical Committee CEN/TC 256 “Railway 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 Dece
14、mber 2018, and conflicting national standards shall be withdrawn at the latest by December 2018.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights.This E
15、uropean Standard is one of the series EN 16951, Railway applications - Track - Noise barriers and related devices acting on airborne sound propagation - Procedures for assessing long term performance, as listed below: Part 1: Acoustic characteristics; Part 2: Non-acoustic characteristics this docume
16、nt.This part of EN 16951 is concerned with long-term durability. 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 - Part 1: Intrinsic charac
17、teristics - Sound absorption in the laboratory under diffuse sound field conditions; 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 characteristics - Airborn
18、e sound insulation 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 railway noise spectrum and sin
19、gle number ratings for diffuse field applications; 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 d
20、irect field applications; CEN/TS 16272-5, 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 reflection under direct sound field co
21、nditions; EN 16272-6, 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; E
22、N 16727-1, Railway applications - Track - Noise barriers and related devices acting on airborne sound propagation - Non-acoustic performance - Part 1: Mechanical performance under static loadings - Calculation and test method; EN 16727-2-1, Railway applications - Track - Noise barriers and related d
23、evices acting on airborne sound propagation - Non-acoustic performance - Part 2-1: Mechanical performance under dynamic loadings due to passing trains - Resistance to fatigue; EN 16727-2-2, Railway applications - Track - Noise barriers and related devices acting on airborne sound propagation - Non-a
24、coustic performance - Part 2-2: Mechanical performance under dynamic loadings caused by passing trains - Calculation method; EN 16727-3, Railway applications - Track - Noise barriers and related devices acting on airborne sound propagation - Non-acoustic performance - Part 3: General safety and envi
25、ronmental requirements;iiiBS EN 16951-2:2018EN 16951-2:2018 (E) EN 16951-1, Railway applications - Track - Noise barriers and related devices acting on airborne sound propagation - Procedures for assessing long term performance - Part 1: Acoustic characteristics; EN 60721-3-4, Classification of envi
26、ronmental conditions - Part 3: Classification of groups of environmental parameters and their severities - Section 4: Stationary use at non-weatherprotected locations (IEC 60721-3-4).According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries ar
27、e 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, Luxembourg, Malta, Netherlands, Norway, Poland, Po
28、rtugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.ivBS EN 16951-2:2018EN 16951-2:2018 (E)IntroductionNoise barriers and related devices acting on sound propagation alongside railways should not only fulfil their acoustic function and structural de
29、sign requirements in accordance with appropriate documents, but also maintain their performance during the required working life. The structural elements need to retain acceptable minimum safety factors at the end of their working life and the acoustic elements do not only have to remain effective s
30、tructurally but provide the specified acoustic performance.All elements in the construction of noise barriers and related devices acting on sound propagation should be resistant to electrolytic or/and chemical corrosion and embrittlement, be dimensionally stable and have generally a high ageing resi
31、stance in many differing conditions.vBS EN 16951-2:2018EN 16951-2:2018 (E)1 ScopeThis European Standard specifies requirements for assessing the working life and provides the relevant exposure conditions.Standards of construction and any material tests conducted should provide evidence of resistance
32、 to specified conditions selected from the following:I. Chemical Agents Location dependentII. De-icing salt Location/climate dependentIII. Dirty water/dust Location/ Climate dependentIV. Dew Climate dependentV. Freeze/thaw Climate dependentVI. Cold Climate dependentVII. Heat Climate dependentVIII. U
33、ltra-Violet (UV) Radiation Climate dependentIX. Traffic Vibration Location dependentX. Biological Process Climate dependentXI. Ozone Location dependentXII. Water Climate dependentXIII. Water spray Wet/dryLocation dependent2 Normative referencesThe following documents, in whole or in part, are normat
34、ively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.EN 60721-3-4:1995, Classification of environmental conditions Pa
35、rt 3: Classification of groups of environmental parameters and their severities Section 4: Stationary use at non-weatherprotected locations (IEC 60721-3-4:1995)6 BS EN 16951-2:2018EN 16951-2:2018 (E)3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3
36、.1noise barriernoise reducing device, which obstructs the direct transmission of airborne sound emanating from railways, and which will typically span between posts and also may overhang the railwayNOTE Noise barriers are generally made of acoustic and structural elements (see 3.3 and 3.4).3.2claddi
37、ngnoise reducing device, which is attached to a wall or other structure and reduces the amount of sound reflectedNOTE Claddings are generally made of acoustic and structural elements (see 3.3 and 3.4).3.3acoustic elementelement whose primary function is to provide the acoustic performance of the dev
38、ice3.4structural elementelement whose primary function is to support or hold in place acoustic elements3.5added deviceadded component that influences the acoustic performance of the original noise-reducing device (acting primarily on the diffracted energy)NOTE In some noise barriers, the acoustic fu
39、nction and the structural function cannot be clearly separated and attributed to different components.3.6rail side exposureuse of the product as a noise barrier or cladding installed alongside railways3.7acoustic working lifeperiod of time during which the declared acoustic performance(s) DL(from EN
40、 16272-3-1) and/or DLR(from EN 16272-3-1) and/or DLRI(from EN 16272-3-2) and/or DLSI(from EN 16272-3-2) of the device will be maintained3.8non-acoustic working lifeperiod of time during which the performance of the device will be sustained which enables it to fulfil the performance characteristics a
41、s identified in EN 16727-1, EN 16727-2-1, EN 16727-2-2 and EN 16727-34 RequirementsThe structural design shall comply with the requirements of the appropriate Eurocode (see B.2).Standard environmental categories selected for noise barriers and related devices acting on sound propagation with possibl
42、e variations are given in Annex A of this document.The manufacturer shall list the measures taken to limit the effects of ageing on his product following the list of ageing agents I to XIII (see Clause 1) and the adverse effects of combining different materials.7BS EN 16951-2:2018EN 16951-2:2018 (E)
43、The manufacturer shall define the working life under all the exposure classes listed in the Table 1. In all cases, the working life of the noise barrier or related device acting on sound propagation is the minimum of the working lives of its components.Adverse effects on the long-term performance of
44、 contact with the ground shall be taken into account.If water is likely to degrade the required working life, the design shall ensure that contact with water and water retention are controlled through design or that protection from the influence of water is provided.The working life of structural an
45、d acoustic elements can be different; therefore, they shall be assessed under the same exposure conditions when installed on the same site.If a change in humidity and/or temperature and/or UV affects the dimensional stability of materials used in the construction, then the design shall allow for suc
46、h changes and ensure that the performance continues to fulfil the performance characteristics.When referring to resistance to the specific conditions listed in Clause 1, special care shall be taken for combinations of different materials, whether inside a single device or in combination with other d
47、evices (for example: a combination of different acoustic elements or another combination of acoustic and structural elements).Where different materials are used in the construction, all appropriate measures shall be taken to avoid electrolytic and chemical corrosion or interaction that could adverse
48、ly affect working life.Where standards exist for the materials to be used, their durability may be assessed by using them.Table 1 Declared working life of non-acoustic performances in function of exposure classes (see Annex A)Environmental class of exposureDeclared work-ing life in years4B1 4B2 4C2
49、4C3 4C4 4K2 4K3 4M3 4M4 4S2 4Z6 4Z7 The working life for each of the listed environmental classes of exposure may be derived from the environmental classifications in Annex A.This European Standard permits specifying authorities to indicate where there is no requirement for assessment under any particular exposure class.The manufacturer shall declare for both structural and acoustic elements:a) the list of measures taken to limit the effects of ageing on his product;b) the working life corresponding to the specific environmental exposure classes;
