1、June 2012 Translation by DIN-Sprachendienst.English price group 7No 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!$|tx“1898185www.din.deDDIN EN 13146-7Railway applications Track Test methods for fastening systems Part 7: Determination of clampingforceEnglish translation of DIN EN 13146-7:2012-06Bahnanwendungen Oberbau Prfverfahren fr Schienenbefestigungssysteme Teil 7: Bestimmung der SpannkraftEnglische be
3、rsetzung von DIN EN 13146-7:2012-06Applications ferroviaires Voie Mthodes dessai pour les systmes de fixation Partie 7: Dtermination de leffortdapplication au patin de railTraduction anglaise de DIN EN 13146-7:2012-06SupersedesDIN EN 13146-7:2003-01www.beuth.deIn case of doubt, the German-language o
4、riginal shall be considered authoritative.Document comprises 10 pages05.12 DIN EN 13146-7:2012-06 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 responsible German bo
5、dy 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 13146-7:2003-01 as follows: a) in the foreword of the EN the standards
6、series EN 13146, Railway applications Track Test methods for fastening systems, has been completed; b) the standard has been editorially revised. Previous editions DIN EN 13146-7: 2003-01 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13146-7 April 2012 ICS 93.100 Supersedes EN 13146-7:2002Eng
7、lish Version Railway applications - Track - Test methods for fastening systems - Part 7: Determination of clamping force Applications ferroviaires - Voies - Mthodes dessai pour les systmes de fixation - Partie 7: Dtermination de leffort dapplication au patin de rail Bahnanwendungen - Oberbau - Prfve
8、rfahren fr Schienenbefestigungssysteme - Teil 7: Bestimmung der Spannkraft 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 giving this European Standard the status of a nation
9、al 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 versi
10、on 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, Cz
11、ech 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 United Kingdom. Management Centre: Avenue Marnix 17, B-
12、1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13146-7:2012: EEUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG EN 13146-7:2012 (E) 2 Contents Page Foreword 31
13、Scope. 42 Normative references 4 3 Terms and definitions, symbols and abbreviations . 43.1 Terms and definitions 43.2 Symbols and abbreviations 44 Principle 45 Apparatus . 55.1 Rail . 55.2 Loading device . 55.3 Measuring and recording instruments 55.4 Calibration 55.5 Steel shims . 56 Test specimens
14、 56.1 Sleeper, bearer or concrete block 56.2 Fastening components 57 Test procedure . 57.1 Preparation for test 57.2 Loading and measurement for assemblies incorporating a rail pad 67.3 Loading and measurement for assemblies not incorporating a rail pad . 68 Test report 8DIN EN 13146-7:2012-06 EN 13
15、146-7:2012 (E) 3 Foreword This document (EN 13146-7:2012) 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 end
16、orsement, 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 this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for ide
17、ntifying any or all such patent rights. This document supersedes EN 13146-7:2002. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. In this revision of EN 13146-7:2002, the alternative test procedure has been omitted. No
18、other major changes have been made. 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 1: Determination of longitudinal rail restraint; Part 2: Determination of torsional resistance; Part 3:
19、 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: Determination of clamping force; Part 8: In service testing; Part 9: Determination of stiffness. These support
20、 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 organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bu
21、lgaria, 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 the United Kingdom. DIN EN 1
22、3146-7:2012-06 EN 13146-7:2012 (E) 4 1 Scope This European Standard specifies a laboratory test procedure for determining the clamping force exerted by the fastening system on the foot of a rail by measuring the force to separate the rail foot from its immediate support. It is applicable to systems
23、with and without baseplates on all types of sleepers, bearers and elements of slab track. The test does not determine the security of fastening components fixed into the sleeper or other fastening system support. This test procedure applies to a complete fastening assembly. It is not applicable to f
24、astening systems for embedded rail. 2 Normative references The following documents, in whole or in part, 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 refe
25、renced document (including any amendments) applies. EN 13481-1:2012, Railway applications Track Performance 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 Veri
26、fication and calibration of the force-measuring system (ISO 7500-1:2004) 3 Terms and definitions, symbols and abbreviations 3.1 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13481-1:2012 apply. 3.2 Symbols and abbreviations For the purposes of this do
27、cument, the following symbols apply. d for direct fastening systems - vertical displacement of the rail relative to the sleeper, in mm; for indirect fastening systems vertical displacement of the rail relative to the baseplate, in mm; msmass of sleeper or part sleeper and fastening components fixed
28、to it, used in the test, in kg; mfmass of loading frame supported by the sleeper, in kg; P vertical load applied to the rail, in kN; P0vertical load at zero rail displacement which just counteracts the clamping force, in kN. 4 Principle The clamping force for a complete rail fastening assembly is de
29、termined by measuring the force necessary to separate the rail from the surface on which it is supported. DIN EN 13146-7:2012-06 EN 13146-7:2012 (E) 5 5 Apparatus 5.1 Rail A short length (approximately 0,5 m or the length of the test specimen for embedded rail) of rail, of the section for which the
30、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 Loading device A device to apply a vertical load to the rail at a controlled rate of approximately 10 kN/m. 5.3 Measuring and recor
31、ding instruments Instruments which measure the vertical displacement of the rail support (baseplate or sleeper) relative to the rail with an accuracy of 0,1 mm and instruments conforming to EN ISO 7500-1:2004, Class 1 which measure the applied force. The recording instruments shall be capable of plo
32、tting load-displacement diagrams. 5.4 Calibration The calibration of actuators and measuring instruments shall be verified periodically with equipment having certified traceability to European or International Standards using the International System of Units (SI). 5.5 Steel shims Steel shims 25 mm
33、25 mm 0,25 mm, maximum thickness 0,30 mm. 6 Test specimens 6.1 Sleeper, bearer or concrete block A portion of a sleeper, bearer or a concrete block whose centroid is approximately at the centre line of the rail seat or baseplate support area. This is described as a sleeper in the test procedure. 6.2
34、 Fastening components All fastening components, as used in track, including baseplates where incorporated. 7 Test procedure 7.1 Preparation for test Fix the rail to the sleeper, with the baseplate if part of the assembly, using the fastening components assembled as in track. If the test is to be con
35、ducted on an indirect fastening system, the clamps may be fixed over the baseplate providing that movement of the rail relative to the baseplate is not constrained. NOTE 1 If a rail pad is used which is shaped to provide positive location in the assembly, the edges of the pad can be cut off to simpl
36、ify removal of the pad as described in 7.2. The portion of the pad under the rail should not be cut. DIN EN 13146-7:2012-06 EN 13146-7:2012 (E) 6 NOTE 2 For fastening assemblies for switches and crossings which incorporate long baseplates additional fixings may be made into the supporting bearer or
37、slab to minimize bending of the baseplate during this test. Clamp the portion of sleeper to the base of the test fixture. Set up the test arrangement as shown in Figure 1 to permit a load P to be applied to the rail normal to the rail seat. Locate one displacement transducer at each of the four corn
38、ers of the rail seat to measure d. Zero the displacement transducers. 7.2 Loading and measurement for assemblies incorporating a rail pad Apply an increasing tensile load P to the rail, ensuring that the rail base is kept parallel to the rail seat without tilting, until the pad can just be moved. Re
39、move the pad and decrease the load until the average of the displacement transducers is zero. Record the load P and then reduce the load to approximately 0,9 P. Whilst recording d (the average of the four transducers) increase the load P at a rate not exceeding 10 kN/min until the load is 1,1 P. Fro
40、m the load-displacement diagram (Figure 2) read off the value of P0at d = 0 which is taken as the clamping force. Repeat the procedure twice more and calculate the mean clamping force. 7.3 Loading and measurement for assemblies not incorporating a rail pad Apply an increasing tensile load P to the r
41、ail until there is a clear space under the rail which is just sufficient to allow insertion of four steel shims under the rail, one at each corner of the rail seat. Reduce the load P to zero and then reapply an increasing load until a value is reached at which it is just possible to move all the shi
42、ms by hand. This load is P0which is taken as the clamping force. Repeat the procedure twice more and calculate the mean clamping force. DIN EN 13146-7:2012-06 EN 13146-7:2012 (E) 7 Figure 1 Test arrangement DIN EN 13146-7:2012-06 EN 13146-7:2012 (E) 8 Key 1 displacement d, in mm 2 load P, in kN Figu
43、re 2 Load/displacement diagram 8 Test report The test report shall include at least the following information: a) number, date of issue and title of this European Standard; b) name and address of laboratory performing the test; c) date test performed; d) name, designation and description of fastening assembly, including individual components, tested; e) origin of test specimens; f) rail section used in test; g) load/displacement diagram; h) mean clamping force. DIN EN 13146-7:2012-06
