1、June 2012Translation by DIN-Sprachendienst.English price group 10No 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).ICS 93
2、.100!$|tt“1898181www.din.deDDIN EN 13146-3Railway applications Track Test methods for fastening systems Part 3: Determination ofattenuation of impact loadsEnglish translation of DIN EN 13146-3:2012-06Bahnanwendungen Oberbau Prfverfahren fr Schienenbefestigungssysteme Teil 3: Bestimmung der Dmpfung v
3、onStolastenEnglische bersetzung von DIN EN 13146-3:2012-06Applications ferroviaires Voie Mthodes dessai pour les systmes de fixation Partie 3: Dtermination de lattnuationdes forces dimpactTraduction anglaise de DIN EN 13146-3:2012-06SupersedesDIN EN 13146-3:2003-02www.beuth.deIn case of doubt, the G
4、erman-language original shall be considered authoritative.Document comprises 17 pages05.12 DIN EN 13146-3:2012-06 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 256 “Railway applications” (Secretariat: DIN, Germany). The respo
5、nsible German body involved in its preparation was the Normenausschuss Fahrweg und Schienen-fahrzeuge (Railway Standards Committee), Working Committee NA 087-00-01-04 UA Schienenbefestigungs-systeme. Amendments This standard differs from DIN EN 13146-3:2003-02 as follows: a) in the foreword of the E
6、N the standards series EN 13146, Railway applications Track Test methods for fastening systems, has been completed; b) the requirements specified in EN 13146-9 relating to static and dynamic stiffness have been taken into account; c) the standard has been editorially revised. Previous editions DIN E
7、N 13146-3: 2003-02 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13146-3 April 2012 ICS 93.100 Supersedes EN 13146-3:2002English Version Railway applications - Track - Test methods for fastening systems - Part 3: Determination of attenuation of impact loads Applications ferroviaires - Voie -
8、Mthodes dessais pour les systmes de fixation - Partie 3: Dtermination de lattnuation des forces dimpact Bahnanwendungen - Oberbau - Prfverfahren fr Schienenbefestigungssyteme - Teil 3: Bestimmung der Dmpfung von Stolasten This European Standard was approved by CEN on 26 November 2011. CEN members ar
9、e 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
10、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 Ce
11、ntre 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, No
12、rway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13146-3:2012: EEU
13、ROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG EN 13146-3:2012 (E) 2 Contents Page Foreword 31 Scope. 42 Normative references 4 3 Terms and definitions, symbols and abbreviations . 43.1 Terms and definitions 43.2 Symbols and abbreviations 44 Princi
14、ple 55 Apparatus . 55.1 Concrete sleeper or bearer . 55.2 Support 55.2.1 Reference method 55.2.2 Alternative method . 65.3 Rail . 65.4 Strain measuring and recording equipment . 65.5 Drop mass . 65.6 Preloading equipment . 76 Test specimens 76.1 Concrete sleeper or bearer . 76.2 Fastening 77 Procedu
15、re Reference method 87.1 Preparation . 87.2 Testing. 87.3 Check on sleeper condition 87.4 Calculation 88 Procedure Alternative method . 98.1 Preparation . 98.2 Testing and checking 9 8.3 Calculation 99 Test report 9Annex A (informative) Sample calculation 11DIN EN 13146-3:2012-06 EN 13146-3:2012 (E)
16、 3 Foreword This document (EN 13146-3:2012) 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 t
17、he latest by October 2012, and conflicting national standards shall be withdrawn at the latest by October 2012. 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 o
18、r all such patent rights. This document supersedes EN 13146-3:2002. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. Detailed changes only have been made in this revision of EN 13146-3:2002. This European Standard is one
19、 of the series EN 13146 “Railway applications Track Test methods for fastening systems“ which consists of the following parts: Part 1: Determination of longitudinal rail restraint; Part 2: Determination of torsional resistance; Part 3: Determination of attenuation of impact loads; Part 4: Effect of
20、repeated loading; Part 5: Determination of electrical resistance; Part 6: Effect of severe environmental conditions; Part 7: Determination of clamping force; Part 8: In service testing; Part 9: Determination of stiffness. These support the requirements in the series EN 13481 “Railway applications Tr
21、ack Performance requirements for fastening systems“. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finlan
22、d, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 13146-3:2012-06 EN 13146-3:2012 (E) 4 1 Scope This European Standa
23、rd specifies laboratory test procedures for applying an impact to a rail fastened to a concrete sleeper or bearer which simulates the impact loading caused by traffic on railway tracks and measuring the strain induced in the sleeper. They are used for comparing the attenuation of impact loads on con
24、crete sleepers or bearers by different rail pads. A reference procedure and alternative procedure are included. This test is only applicable to ballasted track. These test procedures apply to a complete fastening assembly. 2 Normative references The following documents, in whole or in part, are norm
25、atively 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 13146-9:2009, Railway applications Track Test methods for
26、fastening systems Part 9: Determination of stiffness EN 13230-1, Railway applications Track Concrete sleepers and bearers Part 1: General requirements EN 13230-2, Railway applications Track Concrete sleepers and bearers Part 2: Prestressed monoblock sleepers EN 13230-3, Railway applications Track Co
27、ncrete sleepers and bearers Part 3: Twin-block reinforced sleepers EN 13481-1:2012, Railway applications Track Performance requirements for fastening systems Part 1: Definitions 3 Terms and definitions, symbols and abbreviations 3.1 Terms and definitions For the purposes of this document, the terms
28、and definitions given in EN 13481-1:2012 apply. 3.2 Symbols and abbreviations For the purposes of this document, the following symbols apply. a attenuation expressed as per cent reduction in sleeper strain with test pad compared with reference pad; atattenuation at the top of the sleeper, in %; abat
29、tenuation at the bottom of the sleeper, in %; dathickness of aluminium plate used with rail pad, in mm; dtthickness of rail pad for which assembly is designed, in mm; Mdrpositive bending moment at the rail seat of the sleeper, in kNm; DIN EN 13146-3:2012-06 EN 13146-3:2012 (E) 5 vertical deflection,
30、 in mm; pctfirst peak strain in the top of the sleeper with test pad when subject to impact loading; pcbfirst peak strain in the bottom of the sleeper with test pad; pcrtmean first peak strain in the top of the sleeper with reference pad when subject to impact loading; pcrbmean first peak strain in
31、the bottom of the sleeper with reference pad; ststrain in the top of the sleeper due to static preload in alternative test procedure; sbstrain in the bottom of the sleeper due to static preload. 4 Principle An impact load is applied by dropping a mass onto the head of a rail fastened to a concrete s
32、leeper. The effect of the impact is measured as strain in the concrete sleeper. The impact attenuation of a fastening system is assessed by comparing the strains induced with a low attenuation reference rail pad in the fastening system and with the test pad in the fastening system. With a reference
33、pad in the system the strain induced by the impact load shall not exceed 80 % of the rail seat resistance moment of the sleeper (Mdrin accordance with EN 13230-1) at the gauge positions. The drop mass, drop height and resilience of the striking head are adjusted to ensure the limit on strain is not
34、exceeded. Without subsequent change to the drop mass, drop height and striking head, the procedure is repeated with the test pad. NOTE The test result is not very sensitive to the test load. 5 Apparatus 5.1 Concrete sleeper or bearer An uncracked concrete sleeper or bearer, made without modification
35、 for this test, of the correct rail seat dimensions for the fastening assembly to be tested. The sleeper shall have two resistance strain gauges of (100 to 120) mm nominal gauge length bonded to the side of the sleeper symmetrically about a line through the centre of the rail seat normal to the base
36、 of the sleeper. The gauges shall be parallel to the base of the sleeper with one gauge as close as possible to the top of the sleeper rail seat, but avoiding any edge chamfer or radius, and the other gauge at least 10 mm but not more than 25 mm above the base of the sleeper as shown in Figure 1. NO
37、TE The sleeper designer or manufacturer should provide the calculated resistance moment at the gauge positions. 5.2 Support 5.2.1 Reference method The support shall consist of a bed of crushed stone with nominal particle size in the range (5 to 15) mm contained in a tank. The bed shall be continuous
38、 for the full length of monoblock sleepers and bearers, and continuous under each block of two block sleepers. The support shall permit a vertical deflection of the sleeper of (0,1 0,5) mm when a sleeper supported on it is subject to an increase in static load from 50 kN to 60 kN at one rail seat NO
39、TE A suitable depth of crushed stone is 270 mm below the sleeper and a total depth of 370 mm. DIN EN 13146-3:2012-06 EN 13146-3:2012 (E) 6 Key h height of base of strain gauge above base of sleeper 10 mm h 25 mm Figure 1 Position of strain gauges 5.2.2 Alternative method For the alternative method,
40、the support shall consist of a rubber mat on a firm base. The support shall permit a vertical deflection of (0,1 0,5) mm when a sleeper supported on it is subject to an increase in static load from 50 kN to 60 kN at one rail seat. 5.3 Rail A piece of rail (0,3 to 1,0) m long of the section for which
41、 the fastening assembly is designed. 5.4 Strain measuring and recording equipment Instruments which process the output from the strain gauges and provide a record of strain vs. time with a definition of not less than 0,1 ms. The output from the strain gauges shall be measured to 0,1 mV. 5.5 Drop mas
42、s The combination of mass and drop height shall be such that the strain measured at each gauge position shall be less than 80 % of the calculated cracking strain of the sleeper and the time interval for the initial impulse of load shall be 1 ms to 5 ms. A typical drop mass is shown in Figure 2. NOTE
43、 The strain should be sufficient to be accurately measured. DIN EN 13146-3:2012-06 EN 13146-3:2012 (E) 7 5.6 Preloading equipment A set of springs with a total effective stiffness of less than 2 MN/m capable of applying a vertical preload of 50 kN to the rail. Key 1 guides 2 tup 3 rubber pad 4 tup h
44、ead Figure 2 Typical drop mass 6 Test specimens 6.1 Concrete sleeper or bearer As described in 5.1. 6.2 Fastening The complete fastening assembly including all components and baseplate, where appropriate. DIN EN 13146-3:2012-06 EN 13146-3:2012 (E) 8 7 Procedure Reference method 7.1 Preparation The t
45、est shall be carried out in a room or enclosure maintained at (23 5) C. All components used in the test shall be kept at this temperature for not less than 4 h prior to commencement of the test. The fastening system and rail are assembled with a 5 mm thick plain reference pad of HDPE or EVA with a s
46、tatic stiffness not less than 500 MN/m measured in accordance with EN 13146-9:2009. If the fastening assembly is designed for a thicker pad (thickness = dt) an aluminium plate (thickness = da) shall be inserted between the rail and pad where (da= dt- 5) mm. The sleeper with strain gauges fixed as in
47、 5.1 is placed on the support in 5.2.1. An impact load is applied to the rail by free fall of the drop mass and the strain recorded with the record commencing not less than 3 ms before impact and continuing for not less than 5 ms after impact. For an established test rig the magnitude and time inter
48、val of the first strain peak shall be compared with the mean of 10 preceding impacts. If it differs by more than 10 % the test conditions shall be adjusted to achieve the mean condition. For a previously unused test rig or when the ballast or sleeper or bearer has been changed, a series of impacts shall be carried out an
