ISO INTERNATIONAL STANDARD 22074-2 First edition 2021-03 Railway infrastructure Rail fastening systems - Part 2: Test method for longitudinal rail restraint Infrastructure ferroviaire-Systemesdefixation durail Partie 2: Methode d'essai pour la détermination de résistance longitudinaleauglissement Referencenumber IS0 22074-2:2021(E) ISO @ ISO 2021 IS022074-2:2021(E) COPYRIGHTPROTECTEDDOCUMENT IS02021 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting below or Iso's memberbody in the country ofthe requester. ISO copyright office CP 40i : Ch.de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22.749 01 11 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii @ IS0 2021 - All rights reserved IS022074-2:2021(E) Contents Page Foreword ..iv 1 Scope ..1 2 Normative references 3 Terms and definitions 4 Symbols. 5 Principle 6 Apparatus .2 7 Test specimens.. .2 7.1 Rail support .2 7.2 Fastening. .3 8 Procedure .3 8.1 Test temperature .3 8.2 Preparation for test. .3 8.3 Loading 4 8.3.1 Longitudinal rail restraint 8.3.2 Longitudinal stiffness 4 8.3.3 Parameters for track-bridge interaction calculations .5 8.4 Calculation. .5 8.4.1 Longitudinalrailrestraint ..5 8.4.2 Longitudinal stiffness 5 8.4.3 Parameters for track-bridge interaction calculations 5 8.5 Visual inspection. .6 9 Test report. .6 Bibliography 7 @ IS0 2021 - All rights reserved ili