SIST EN ISO 22074-7:2024

Railway infrastructure - Rail fastening systems - Part 7: Test method for clamping force and uplift stiffness (ISO 22074-7:2021)

This document specifies the laboratory test procedure for determining the clamping force exerted by the fastening system on the foot of the rail by measuring the force to separate the rail foot from its immediate support. When required, the procedure is also used to determine the uplift stiffness of the fastening system.
It is applicable to systems with and without baseplates on all types of sleepers, bearers or elements of ballastless track. The test does not determine the security of the 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 fastening systems for embedded rail or other fastening systems which do not act on the foot of the rail.

Bahninfrastruktur - Schienenbefestigungssysteme - Teil 7: Prüfverfahren zur Bestimmung der Spannkraft und der Abhebesteifigkeit (ISO 22074-7:2021)

Dieses Dokument legt die Laborprüfverfahren zur Bestimmung der Spannkraft fest, die von einem Befestigungssystem auf den Schienenfuß ausgeübt wird, indem die Kraft zur Trennung des Schienenfußes von seinem unmittelbaren Auflager gemessen wird. Diese Prüfung kann auch angewendet werden, um die Abhebesteifigkeit der Schienenbefestigungssysteme zu bestimmen.
Sie ist auf Systeme mit und ohne Unterlagsplatten für alle Arten von Gleis- und Weichenschwellen oder Elemente schotterloser Oberbau anwendbar. Die Prüfung gibt keinen Aufschluss über die Sicherheit von Befestigungsteilen, die in der Schwelle oder einem anderen Auflager des Schienenbefestigungssystems fest verankert sind.
Das Prüfverfahren ist anwendbar für ein komplettes Schienenbefestigungssystem. Es gilt nicht für Schienenbefestigungssysteme eingebetteter Schienen oder andere Befestigungssysteme, die nicht am Schienenfuß wirken.

Infrastructure ferroviaire - Systèmes de fixation du rail - Partie 7: Méthode d'essai pour la détermination de l'effort d'application au patin du rail et la rigidité au soulèvement (ISO 22074-7:2021)

Le présent document spécifie la procédure d'essai en laboratoire qui permet de déterminer l'effort d'application au patin du rail exercé par le système de fixation sur le patin du rail en mesurant l'effort nécessaire pour séparer le patin du rail de son support immédiat. Si nécessaire, la procédure est également utilisée pour déterminer la raideur de soulèvement du système de fixation. Elle s'applique aux systèmes avec et sans selles, sur tous types de traverses, de supports ou d'éléments de voie sans ballast. L'essai ne détermine pas le niveau de sécurité des composants de fixation attachés à la traverse ou à tout autre support du système de fixation.
Cette procédure d'essai s'applique aux systèmes de fixation complets. Elle ne s'applique pas aux systèmes de fixation destinés aux rails enrobés ou aux autres systèmes de fixation qui n'agissent pas sur le patin du rail.

Železniška infrastruktura - Sistemi za pritrjevanje tirnic - 7. del: Preskusna metoda za pritisne sile vzmeti in dvižne togosti (ISO 22074-7:2021)

Ta dokument določa laboratorijski preskusni postopek za določanje pritisne sile vzmeti, ki jo ima sistem za pritrjevanje ob vznožju tirnice, z merjenjem sile, ki je potrebna za ločevanje vznožja tirnice z njegove neposredne podpore. Kadar je potrebno, se postopek uporablja tudi za določanje dvižne togosti sistema za pritrjevanje.
Uporablja se za sisteme s podnožnimi ploščami in brez njih na vseh vrstah pragov, nosilnih ogrodij ali elementov zgornjega ustroja brez tamponskega sloja. Preskus ne določa varnosti pritrdilnih komponent, pritrjenih na prag, ali druge podpore sistema za pritrjevanje.
Ta preskusni postopek se uporablja za celoten pritrdilni sestav. Ne uporablja se za sisteme za pritrjevanje za vgrajene tirnice ali druge sisteme za pritrjevanje, ki ne delujejo na vznožje tirnice.

General Information

• Status: Published
• Public Enquiry End Date: 29-Feb-2024
• Publication Date: 16-Apr-2024
• ICS: 45.080 - Rails and railway components
• Technical Committee: IŽNP - Reilway applications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 09-Apr-2024
• Due Date: 14-Jun-2024
• Completion Date: 17-Apr-2024
• Ref Project: EN ISO 22074-7:2024 - Railway infrastructure - Rail fastening systems - Part 7: Test method for clamping force and uplift stiffness (ISO 22074-7:2021)

Relations

• Replaces: SIST EN 13146-7:2019 - Railway applications - Track - Test methods for fastening systems - Part 7: Determination of clamping force and uplift stiffness
• Effective Date: 17-Dec-2025

Overview

EN ISO 22074-7:2024 (identical to ISO 22074-7:2021) defines a laboratory test method for clamping force and uplift stiffness of rail fastening systems used in railway infrastructure. The standard explains how to measure the force required to separate the rail foot from its immediate support and, when required, how to determine the uplift stiffness of a complete fastening assembly. It applies to systems with or without baseplates on all types of sleepers, bearers or ballastless track elements, but it does not cover embedded rails or fastening systems that do not act on the rail foot.

Key Topics

• Test principle: measure the vertical load necessary to separate the rail foot from its support to determine clamping force; derive uplift stiffness where required.
• Scope of application: complete fastening assemblies, with/without baseplates; not applicable to embedded rail or components fixed into the sleeper (security of fastenings is not assessed).
• Apparatus and accuracy:
  • Short length rail section matching the intended rail profile.
  • Loading device capable of controlled vertical loading at approximately 10 kN/min.
  • Force measurement conforming to ISO 7500-1:2018 (Class 1); displacement measurement accuracy ±0.1 mm.
  • Auxiliary items such as steel shims (25 × 25 × 0.25 mm, max 0.30 mm) and displacement transducers (often placed at four rail-seat corners).
• Test procedures: reference and alternative methods covering preparation, loading sequences, pad handling, and data recording (load–displacement diagrams).
• Reporting: specified test report contents to document clamping force, uplift stiffness and test conditions.

Applications

Who uses this standard and why:

• Rail fastening manufacturers - product development, validation and type testing.
• Independent test laboratories - repeatable laboratory measurement of clamping force and uplift stiffness for certification and QA.
• Railway infrastructure managers and designers - specify performance requirements, compare fastening systems, and support procurement decisions.
• Regulatory and conformity bodies - assess compliance and include test results in safety dossiers.

Practical benefits:

• Provides consistent, repeatable methods for comparing performance of rail fastening systems.
• Supports design verification, quality control and lifecycle assessment of track fastening components.
• Enables objective data input for maintenance strategies and safety evaluations.

Related Standards

• ISO 22074-1 - Vocabulary for rail fastening systems (referenced for terms and definitions).
• ISO 7500-1:2018 - Calibration and verification of force-measuring systems for testing machines (referenced for measurement accuracy and calibration).

Keywords: rail fastening systems, clamping force, uplift stiffness, test method, EN ISO 22074-7:2024, railway infrastructure, fastening assembly, baseplate, sleeper.

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2024
Železniška infrastruktura - Sistemi za pritrjevanje tirnic - 7. del: Preskusna metoda
za pritisne sile vzmeti in dvižne togosti (ISO 22074-7:2021)
Railway infrastructure - Rail fastening systems - Part 7: Test method for clamping force
and uplift stiffness (ISO 22074-7:2021)
Bahninfrastruktur - Schienenbefestigungssysteme - Teil 7: Prüfverfahren zur
Bestimmung der Spannkraft und der Abhebesteifigkeit (ISO 22074-7:2021)
Infrastructure ferroviaire - Systèmes de fixation du rail - Partie 7: Méthode d'essai pour la
détermination de l'effort d'application au patin du rail et la rigidité au soulèvement (ISO
22074-7:2021)
Ta slovenski standard je istoveten z: EN ISO 22074-7:2024
ICS:
45.080 Tračnice in železniški deli Rails and railway
components
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 22074-7
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2024
EUROPÄISCHE NORM
ICS 45.080
English Version
Railway infrastructure - Rail fastening systems - Part 7:
Test method for clamping force and uplift stiffness (ISO
22074-7:2021)
Infrastructure ferroviaire - Systèmes de fixation du rail Bahninfrastruktur - Schienenbefestigungssysteme -
- Partie 7: Méthode d'essai pour la détermination de Teil 7: Prüfverfahren zur Bestimmung der Spannkraft
l'effort d'application au patin du rail et la rigidité au und der Abhebesteifigkeit (ISO 22074-7:2021)
soulèvement (ISO 22074-7:2021)
This European Standard was approved by CEN on 23 March 2024.

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 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 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 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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 22074-7:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 22074-7:2021 has been prepared by Technical Committee ISO/TC 269 “Railway
applications” of the International Organization for Standardization (ISO) and has been taken over as
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 September 2024, and conflicting national standards
shall be withdrawn at the latest by September 2024.
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.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 22074-7:2021 has been approved by CEN as EN ISO 22074-7:2024 without any
modification.
INTERNATIONAL ISO
STANDARD 22074-7
First edition
2021-08
Railway infrastructure — Rail
fastening systems —
Part 7:
Test method for clamping force and
uplift stiffness
Infrastructure ferroviaire — Systèmes de fixation du rail —
Partie 7: Méthode d'essai pour la détermination de l'effort
d'application au patin du rail et la rigidité au soulèvement
Reference number
ISO 22074-7:2021(E)
©
ISO 2021
ISO 22074-7:2021(E)
© ISO 2021
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
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
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Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved

ISO 22074-7:2021(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 1
5 Principle . 2
6 Apparatus . 2
7 Test specimens. 2
7.1 Rail support . 2
7.2 Fastening . 2
8 Test procedure (reference method) . 2
8.1 Preparation for test . 2
8.2 Loading and measurement for assemblies incorporating a rail pad . 3
8.3 Loading and measurement for assemblies not incorporating a rail pad . 3
8.4 Determination of uplift stiffness . 3
8.5 Testing with two baseplated fastening assemblies . 3
9 Test procedure (alternative method) . 5
9.1 Preparation for test . 5
9.2 Loading and measurement for assemblies incorporating a rail pad . 5
9.3 Loading and measurement for assemblies not incorporating a rail pad . 6
9.4 Determination of uplift stiffness . 6
10 Test report . 7
Bibliography . 9
ISO 22074-7:2021(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
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ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
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Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
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expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 269, Railway applications, Subcommittee
SC 1, Infrastructure.
A list of all parts in the ISO 22074 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved

INTERNATIONAL STANDARD ISO 22074-7:2021(E)
Railway infrastructure — Rail fastening systems —
Part 7:
Test method for clamping force and uplift stiffness
1 Scope
This document specifies the laboratory test procedure for determining the clamping force exerted by
the fastening system on the foot of the rail by measuring the force to separate the rail foot from its
imm
...