1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 13146-2:2012Railway applications Track Test methods for fasteningsystemsPart 2: Determination of torsional resistanceBS EN 13146-2:2012 BRITISH STANDARDNational forewordThi
2、s British Standard is the UK implementation of EN 13146-2:2012.It supersedes BS EN 13146-2:2002 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee RAE/2, Railway Applications - Track.A list of organizations represented on this committee can beobtained on r
3、equest to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 68147 9ICS 45.080Compliance with a British St
4、andard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 April 2012.Amendments issued since publicationDate Text affectedBS EN 13146-2:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13146
5、-2 April 2012 ICS 93.100 Supersedes EN 13146-2:2002English Version Railway applications - Track - Test methods for fastening systems - Part 2: Determination of torsional resistance Applications ferroviaires - Voie - Mthodes dessai pour les systmes de fixation - Partie 2: Dtermination du couple denca
6、strement Bahnanwendungen - Oberbau - Prfverfahren fr Schienenbefestigungssysteme - Teil 2: Ermittlung des Verdrehwiderstandes This European Standard was approved by CEN on 26 November 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for g
7、iving 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 o
8、fficial 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
9、 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, Turkey and Unit
10、ed Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG 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 13146-2:2012
11、: EBS EN 13146-2:2012EN 13146-2:2012 (E) 2 Contents Page Foreword 3g31g3 Scope. 4g32g3 Normative references 4 g33g3 Terms and definitions 4g34g3 Principle 4g35g3 Apparatus . 4g35.1g3 Rail . 4g35.2g3 Actuator 4g35.3g3 Displacement measuring instruments . 5g35.4g3 Force measuring instruments 5g35.5g3
12、Verification of calibration 5g36g3 Test specimens 5g36.1g3 Rail support 5g36.2g3 Fastening 5g37g3 Procedure . 6g37.1g3 Preparation for test 6g37.2g3 Loading and measurement with fastenings in line 6g37.3g3 Loading and measurement when fastenings offset . 6g37.4g3 Moment of load-displacement graph .
13、7g38g3 Test report 7g3Annex A (informative) Moment of load-displacement graph 8g3BS EN 13146-2:2012EN 13146-2:2012 (E) 3 Foreword This document (EN 13146-2:2012) has been prepared by Technical Committee CEN/TC 256 “Railway applications”, the secretariat of which is held by DIN. This European Standar
14、d shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the 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 thi
15、s 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 supersedes EN 13146-2:2002. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trad
16、e Association. Detailed changes only have been made in this revision of EN 13146-2:2002. The procedure is not applicable to embedded rail. This European Standard is one of the series EN 13146 “Railway applications Track Test methods for fastening systems“ which consists of the following parts: Part
17、1: Determination of longitudinal rail restraint; Part 2: Determination of torsional resistance; Part 3: Determination of attenuation of impact loads; Part 4: Effect of repeated loading; Part 5: Determination of electrical resistance; Part 6: Effect of severe environmental conditions; Part 7: Determi
18、nation of clamping force; Part 8: In service testing; Part 9: Determination of stiffness. These support the requirements in the series EN 13481 “Railway applications Track Performance requirements for fastening systems“. According to the CEN/CENELEC Internal Regulations, the national standards organ
19、izations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Por
20、tugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 13146-2:2012EN 13146-2:2012 (E) 4 1 Scope This European Standard specifies a laboratory test procedure to determine the moment necessary to rotate a rail, secured to a sleeper by a rail fastening ass
21、embly, through 1 in a plane parallel to the base of the rail. The value obtained can be used in track stability calculations. The test is not applicable to embedded rails. This test procedure applies to a complete fastening assembly. 2 Normative references The following documents, in whole or in par
22、t, are normatively 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 13481-1:2012, Railway applications Track Perfor
23、mance requirements for fastening systems Part 1: Definitions EN ISO 7500-1:2004, Metallic materials Verification of static uniaxial testing machines Part 1: Tension/compression testing machines Verification and calibration of the force-measuring system (ISO 7500-1:2004) EN ISO 9513:2002, Metallic ma
24、terials Calibration of extensometers used in uniaxial testing (ISO 9513:1999) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13481-1:2012 apply. 4 Principle A transverse load is applied to the foot of a rail fixed to a single rail seat of a sleeper w
25、hilst the sleeper is restrained. Movement of the rail relative to the sleeper is recorded and the load increased until the rail has rotated through a minimum of 1,5. The moment to cause a displacement of 1 is then determined from a plot of moment of load against displacement. 5 Apparatus 5.1 Rail A
26、short length of rail of the section for which the fastening assembly under test is designed. The rail shall be unlaminated and have neither loose rust on the surface nor be polished on the foot by repeated testing. 5.2 Actuator Actuator capable of applying a force, of at least 25 kN, to the edge of
27、the foot of the rail, normal to the rail and parallel to the plane of the foot of the rail, at a controlled rate of (2 1) kN/min as shown in Figure 1. BS EN 13146-2:2012EN 13146-2:2012 (E) 5 5.3 Displacement measuring instruments The instruments shall be capable of measuring the displacement of the
28、rail relative to its support to 0,1. If linear measurement of displacement is used contact instruments shall conform to EN ISO 9513:2002, Table 2, Class 2 and be capable of measuring displacement to 0,01 mm. 5.4 Force measuring instruments Instruments conforming to EN ISO 7500-1:2004, class 1 over t
29、he required range of force. 5.5 Verification of calibration The calibration of actuators and measuring instruments shall be verified periodically using equipment having certified traceability to European or International Standards using the International System of Units (SI). 6 Test specimens 6.1 Ra
30、il support A sleeper or half sleeper with cast-in fastening components or holes and rail seats, as made without modification for this test. 6.2 Fastening The complete fastening assembly including all components and baseplate, where appropriate. BS EN 13146-2:2012EN 13146-2:2012 (E) 6 300 mm1234Key 1
31、 test rail support 2 fastening assembly including pad 3 rail as described in 5.1 4 displacement measuring instrument Figure 1 Test arrangement with in-line fastenings 7 Procedure 7.1 Preparation for test Fix the short length of rail to one rail seat of the rail support using the fastening components
32、 as assembled in track. Support the sleeper on a rigid horizontal base and restrain it from horizontal movement. 7.2 Loading and measurement with fastenings in line Using the arrangement shown in Figure 1, apply a load to the rail and push the rail to a position where the rail foot in the rail seat
33、area diagonally contacts both fastening inserts or insulators or shoulders. Move the actuator to the opposite side of the rail. Apply an increasing load and continuously measure and record the moment of load to 0,03 kNm and the rail displacement relative to the sleeper to 0,01. When the rail has dis
34、placed by a minimum of 1,5, remove the load. After a minimum of 3 min apply the load to the opposite side of the rail and repeat the same loading cycle. Plot the moment of load against the angular displacement of the rail for each loading cycle. NOTE To avoid damage to the fastening assembly, loadin
35、g should be stopped as soon as the rail contacts both fastening inserts or insulators or shoulders. 7.3 Loading and measurement when fastenings offset If the fastenings are offset from the rail support centre line, perform two tests on the same assembly with each arrangement shown in Figure 2. Plot
36、the moment of load against the angular displacement of the rail for each loading cycle. BS EN 13146-2:2012EN 13146-2:2012 (E) 7 300 mm 300 mm11Key 1 load Figure 2 Test arrangement with offset fastenings 7.4 Moment of load-displacement graph A typical moment of load-displacement graph is shown in Ann
37、ex A. The data for track stability can be extracted from such graphs. 8 Test report The test report shall include at least the following information: a) number, title and date of issue of this European Standard; b) name and address of laboratory performing the test; c) date test performed; d) name,
38、designation and description of fastening assembly, including individual components, tested; e) origin of test specimens; f) rail section used in test; g) test arrangement; h) graphs of moment of load versus rail angle for each direction of loading. BS EN 13146-2:2012EN 13146-2:2012 (E) 8 Annex A (in
39、formative) Moment of load-displacement graph Figure A.1 shows a typical graph of angular displacement of the rail against the moment of load. 2,01,51,00,50,0-0,5-1,0-1,5-2,01234Key 1 displacement degrees 2 moment of load (kNm) 3 1sttest 4 return test Figure A.1 Typical moment of load-displacement gr
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