EN ISO 22074-8:2024
(Main)Railway infrastructure - Rail fastening systems - Part 8: Test method for vertical stiffness (ISO 22074-8:2022)
Railway infrastructure - Rail fastening systems - Part 8: Test method for vertical stiffness (ISO 22074-8:2022)
This document specifies laboratory test procedures to determine the static and low-frequency dynamic stiffness of rail pads, baseplate pads and complete rail fastening assemblies.
Bahninfrastruktur - Schienenbefestigungssysteme - Teil 8: Bestimmung der vertikalen Steifigkeiten (ISO 22074-8:2022)
Dieses Dokument legt Laborprüfverfahren für die Bestimmung der statischen und dynamischen Steifigkeit bei niedriger Frequenz von Zwischenlagen, Zwischenplatten und vollständigen Schienenbefestigungssystemen fest.
Infrastructure ferroviaire - Systèmes de fixation du rail - Partie 8: Méthode d'essai de la raideur verticale (ISO 22074-8:2022)
Le présent document spécifie les modes opératoires des essais en laboratoire dont l'objectif est de déterminer la raideur statique et la raideur dynamique à basse fréquence des semelles sous rail, des semelles sous selle ainsi que des systèmes de fixation complets.
Železniška infrastruktura - Sistemi za pritrjevanje tirnic - 8. del: Preskusna metoda za navpično togost (ISO 22074-8:2022)
Ta dokument določa laboratorijski preskusni postopek za ugotavljanje statične in nizkofrekvenčne dinamične
togosti tirničnih vložkov, vložkov osnovne plošče in celih pritrdilnih sestavov za tirnice.
General Information
Relations
Overview
EN ISO 22074-8:2024 - "Railway infrastructure - Rail fastening systems - Part 8: Test method for vertical stiffness" (identical to ISO 22074-8:2022) specifies laboratory test procedures for measuring the static and low‑frequency dynamic vertical stiffness of rail pads, baseplate pads and complete rail fastening assemblies. Published by CEN in March 2024 and adopted from ISO, the standard is part of the ISO 22074 series for rail fastening systems and defines methods, apparatus checks and reporting requirements for laboratory evaluation.
Key topics and requirements
- Scope and definitions: Clear terminology for static stiffness and low‑frequency dynamic stiffness, and reference to ISO 22074‑1 for vocabulary.
- Verification of calibration: Requirements to verify force and displacement measuring systems using relevant calibration standards (normative references include ISO 7500‑1 and ISO 9513).
- Test procedures for pads (Clause 6):
- Static test procedure: principle, required apparatus, stepwise test procedure and mandatory elements of the test report.
- Low‑frequency dynamic procedure: frequency‑based measurement approach, apparatus and report format.
- Test procedures for complete rail fastening assemblies (Clause 7):
- Static and low‑frequency dynamic procedures tailored to assemblies, including specimen preparation, apparatus and reporting.
- Symbols and measurement parameters: Standardized notation for forces, displacements and stiffness (e.g., F, d, k) to ensure consistent data exchange.
- Frequency limitation: Methods cover static and low‑frequency dynamic tests only; frequencies above 30 Hz are excluded (see other standards for high‑frequency testing).
Practical applications and users
EN ISO 22074‑8:2024 is intended for:
- Manufacturers of rail pads, baseplate pads and fastening assemblies - for product development, design validation and quality control.
- Independent testing laboratories - to perform standardized vertical stiffness measurements and generate traceable test reports.
- Railway infrastructure owners and operators - to assess component performance, support procurement specifications and ensure interoperability.
- Track engineers and consultants - to select and validate fastening systems that meet vertical stiffness requirements for track design and maintenance.
- Regulatory and conformity assessment bodies - for verification and certification of fastening components.
Practical uses include comparative product testing, acceptance testing during procurement, research on track dynamic behavior, and inputs to track design models.
Related standards
- ISO 22074‑1 (vocabulary for rail fastening systems)
- ISO 7500‑1 (calibration and verification of force measurement)
- ISO 9513 (extensometer calibration)
- For higher‑frequency stiffness testing: EN 15461 and EN 17495
Keywords: EN ISO 22074-8:2024, rail fastening systems, vertical stiffness test, rail pads, baseplate pads, static stiffness, low-frequency dynamic stiffness, railway infrastructure standard.
Frequently Asked Questions
EN ISO 22074-8:2024 is a standard published by the European Committee for Standardization (CEN). Its full title is "Railway infrastructure - Rail fastening systems - Part 8: Test method for vertical stiffness (ISO 22074-8:2022)". This standard covers: This document specifies laboratory test procedures to determine the static and low-frequency dynamic stiffness of rail pads, baseplate pads and complete rail fastening assemblies.
This document specifies laboratory test procedures to determine the static and low-frequency dynamic stiffness of rail pads, baseplate pads and complete rail fastening assemblies.
EN ISO 22074-8:2024 is classified under the following ICS (International Classification for Standards) categories: 45.080 - Rails and railway components. The ICS classification helps identify the subject area and facilitates finding related standards.
EN ISO 22074-8:2024 has the following relationships with other standards: It is inter standard links to EN 13146-9:2020. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN ISO 22074-8:2024 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2024
Železniška infrastruktura - Sistemi za pritrjevanje tirnic - 8. del: Preskusna metoda
za navpično togost (ISO 22074-8:2022)
Railway infrastructure - Rail fastening systems - Part 8: Test method for vertical stiffness
(ISO 22074-8:2022)
Bahninfrastruktur - Schienenbefestigungssysteme - Teil 8: Bestimmung der vertikalen
Steifigkeiten (ISO 22074-8:2022)
Infrastructure ferroviaire - Systèmes de fixation du rail - Partie 8: Méthode d'essai de la
raideur verticale (ISO 22074-8:2022)
Ta slovenski standard je istoveten z: EN ISO 22074-8:2024
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 22074-8
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2024
EUROPÄISCHE NORM
ICS 45.080
English Version
Railway infrastructure - Rail fastening systems - Part 8:
Test method for vertical stiffness (ISO 22074-8:2022)
Infrastructure ferroviaire - Systèmes de fixation du rail Bahninfrastruktur - Schienenbefestigungssysteme -
- Partie 8: Méthode d'essai de la raideur verticale (ISO Teil 8: Bestimmung der vertikalen Steifigkeiten (ISO
22074-8:2022) 22074-8:2022)
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 22074-8:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
The text of ISO 22074-8:2022 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 22074-8:2022 has been approved by CEN as EN ISO 22074-8:2024 without any
modification.
INTERNATIONAL ISO
STANDARD 22074-8
First edition
2022-02
Railway infrastructure — Rail
fastening systems —
Part 8:
Test method for vertical stiffness
Infrastructure ferroviaire — Systèmes de fixation du rail —
Partie 8: Méthode d'essai de la raideur verticale
Reference number
ISO 22074-8:2022(E)
ISO 22074-8:2022(E)
© ISO 2022
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
CP 401 • 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
ISO 22074-8:2022(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 Verification of calibration .2
6 Test procedures for pads.3
6.1 Static test procedure for pads . 3
6.1.1 Principle . 3
6.1.2 Apparatus . 3
6.1.3 Procedure . 4
6.1.4 Test report . 5
6.2 Low-frequency dynamic test procedure for pads . 6
6.2.1 General . 6
6.2.2 Principle . 6
6.2.3 Apparatus . 6
6.2.4 Procedure . 6
6.2.5 Test report . 7
7 Test procedures for complete rail fastening assemblies . 7
7.1 Static test procedure for fastening assemblies . 7
7.1.1 Principle . 7
7.1.2 Apparatus . 7
7.1.3 Test specimens . 8
7.1.4 Procedure . 8
7.1.5 Test report . 9
7.2 Low-frequency dynamic test procedure for fastening assemblies . 9
7.2.1 General . 9
7.2.2 Principle . 10
7.2.3 Apparatus . 10
7.2.4 Procedure . 10
7.2.5 Test report . 10
Bibliography .12
iii
ISO 22074-8:2022(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
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
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
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
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
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
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 22074-8:2022(E)
Introduction
This document brings together test methods for measuring the stiffness of pads and fastening
assemblies under static and low-frequency dynamic loading.
No method for testing at frequencies above 30 Hz is included. Methods for assessing stiffness at higher
frequencies can be found in other standards, including EN 15461 and EN 17495.
v
INTERNATIONAL STANDARD ISO 22074-8:2022(E)
Railway infrastructure — Rail fastening systems —
Part 8:
Test method for vertical stiffness
1 Scope
This document specifies laboratory test procedures to determine the static and low-frequency dynamic
stiffness of rail pads, baseplate pads and complete rail fastening assemblies.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 7500-1:2018, Metallic materials — Calibration and verification of static uniaxial testing machines —
Part 1: Tension/compression testing machines — Calibration and verification of the force-measuring system
ISO 9513:2012, Metallic materials — Calibration of extensometer systems used in uniaxial testing
ISO 22074-1, Railway infrastructure — Rail fastening systems — Part 1: Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 22074-1 and the following
apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
static stiffness
force required to cause a unit displacement of a pad or a rail fastening assembly with the load applied
slowly enough to avoid all significant loading rate effects
3.2
low-frequency dynamic stiffness
force required to cause a unit displacement of a pad or a rail fastening assembly with a cyclic load
applied at a frequency and force amplitude representative of the loading in railway track associated
with passing wheels or bogies
ISO 22074-8:2022(E)
4 Symbols
F reference force applied to pad in measurement of static stiffness of pad, in kN
SPmax
F lower limit of force for determining the static secant stiffness of a pad, in kN (approximately
SP1
equal to the clamping force expected in a fastening system)
F upper limit of force for determining the static secant stiffness of a pad, in kN
SP2
k static stiffness of pad, in MN/m
SP
d vertical displacement of pad with force F applied, in mm
SP1 SP1
d vertical displacement of pad with force F applied, in mm
SP2 SP2
F reference force for measurement of low-frequency dynamic stiffness of pad, in kN
LFPmax
F lower limit of force for determining the low-frequency dynamic stiffness of pad, in kN (approx-
LFP1
imately equal to the clamping force expected in a fastening system)
F upper limit of force for determining the low-frequency dynamic stiffness of pad, in kN
LFP2
d vertical displacement of pad with force F applied in mm
LFP1 LFP1
d vertical displacement of pad with force F applied in mm
LFP2 LFP2
f frequency of measurement of low-frequency measurement dynamic stiffness of pad, in Hz
LFP
k low-frequency dynamic stiffness of pad at a specific frequency, in MN/m
LFPf
F reference force for measurement of static stiffness of assembly, in kN
SAmax
k static stiffness of assembly, in MN/m
SA
d vertical displacement of rail with force F applied, in mm
SA1 SA1
d vertical displacement of rail with force F applied, in mm
SA2 SA2
F lower limit of force for determining the static secant stiffness of
...
SIST EN ISO 22074-8:2024 표준은 철도 인프라의 레일 고정 시스템에 대한 중요한 시험 방법을 규명하고 있습니다. 이 문서는 레일 패드, 베이스플레이트 패드 및 전체 레일 고정 조립체의 정적 및 저주파 동적 강성을 측정하기 위한 실험실 시험 절차를 명확히 지정합니다. 이 표준의 범위는 매우 폭넓으며, 철도 인프라의 안정성과 효율성을 보장하기 위해 필수적인 역할을 합니다. 특히, 레일 고정 시스템의 성능을 정량적으로 평가할 수 있는 기초를 제공하여, 철도 구조물의 안전하고 신뢰할 수 있는 운영을 지원합니다. SIST EN ISO 22074-8:2024의 강점 중 하나는 정적 하중과 저주파 동적 하중 모두를 분석할 수 있는 시험 방법론을 포함하여, 현실적인 사용 조건을 반영한 시험이 가능하다는 점입니다. 이는 레일 고정 시스템의 물리적 특성을 정확하게 평가할 수 있게 하며, 다양한 실험 환경에서 적용할 수 있는 유연성을 제공합니다. 또한, 이 표준은 철도 분야의 국제적인 기술 표준과 조화를 이루고 있어, 글로벌 시장에서의 경쟁력을 증가시킵니다. EN ISO 22074-8:2024는 철도 인프라의 현대화와 지속 가능한 발전에 기여할 수 있는 중요한 기준으로 자리 잡고 있어, 관련 업계에서의 수요와 필요성이 더욱 부각됩니다. 따라서, SIST EN ISO 22074-8:2024 표준은 철도 인프라의 신뢰성과 운송 효율성을 높이는 데 필수적인 기준으로, 레일 고정 시스템의 실증적 수치와 관련된 평가 절차를 제공하여 관련 업계 전반에서 큰 의미를 가지게 됩니다.
Die Norm EN ISO 22074-8:2024 bietet umfassende Richtlinien zur Festlegung von Prüfmethoden für die vertikale Steifigkeit von Schienenbefestigungssystemen. Diese Norm ist insbesondere für die Tests von Schwellenschoner, Plattenauflagen und kompletten Schienenbefestigungsbaugruppen relevant, wodurch sie eine zentrale Rolle in der Qualitätssicherung der Bahninfrastruktur spielt. Ein herausragendes Merkmal dieser Norm ist ihre detaillierte Beschreibung der Laborprüfverfahren, die eine präzise Bestimmung sowohl der statischen als auch der tieffrequenten dynamischen Steifigkeit ermöglicht. Dies stellt sicher, dass die getesteten Produkte hohen Standards entsprechen und die Sicherheitsanforderungen im Schienenverkehr zuverlässig erfüllt werden. Die Relevanz der EN ISO 22074-8:2024 liegt in der zunehmenden Notwendigkeit, die Leistung von Schienenbefestigungssystemen zu maximieren, um die Gesamteffizienz und Sicherheit im Bahnverkehr zu erhöhen. Angesichts der komplexen Anforderungen moderner Bahninfrastrukturen unterstützt diese Norm die Hersteller und Prüfinstitutionen dabei, qualitativ hochwertige und leistungsfähige Komponenten zu erstellen, die den Herausforderungen im Gleisbau gewachsen sind. Zusammengefasst bietet die EN ISO 22074-8:2024 entscheidende Standards zur Gewährleistung der Effizienz und Sicherheit von Schienenbefestigungssystemen und stellt somit einen wichtigen Baustein im Bereich der Bahninfrastruktur dar. Die Umsetzung dieser Norm führt zu signifikanten Verbesserungen in der Performance der getesteten Produkte und ist unverzichtbar für die langfristige Wartbarkeit und Funktionalität der Schieneninfrastruktur.
EN ISO 22074-8:2024は、鉄道インフラストラクチャーにおけるレール締結システムに関連する重要な基準です。この標準は、レールパッド、ベースプレートパッド、および完全なレール締結アセンブリの静的および低周波動的剛性を測定するための実験室試験手順を定めています。 この標準の強みは、試験方法の明確性と再現性にあります。高い精度で静的および動的剛性を評価できるため、鉄道運行の安全性と安定性を向上させる上で非常に重要です。また、試験手順は国際的なベストプラクティスに基づいており、世界中の鉄道インフラ管理者やエンジニアにとって信頼性の高い指針となっています。 さらに、EN ISO 22074-8:2024は鉄道業界における標準化の重要性を強調しています。鉄道輸送の効率化と安全性を確保するために、この基準は不可欠であり、適切なレール締結システムの選定と評価をサポートします。従って、鉄道関係者にとって、この標準はその業務の質を向上させる強力なツールとなるでしょう。
La norme SIST EN ISO 22074-8:2024 aborde les procédures d'essai en laboratoire pour mesurer la rigidité verticale des systèmes de fixation ferroviaire, spécifiquement des coussinets de rail, des coussinets de plaque de base et des ensembles complets de fixation de rail. Ce document est essentiel pour la compréhension approfondie de la performance des composants dans les infrastructures ferroviaires. L'un des principaux atouts de cette norme est sa capacité à normaliser les méthodes de test, garantissant ainsi une approche cohérente et reproductible pour évaluer la rigidité statique et dynamique à basse fréquence. Cela permet non seulement d'améliorer la qualité des matériaux et des systèmes de fixation, mais aussi d'assurer la sécurité et la fiabilité des infrastructures ferroviaires. La pertinence de la norme SIST EN ISO 22074-8:2024 ne peut être sous-estimée dans le contexte actuel où la durabilité et l'efficacité des réseaux ferroviaires sont de plus en plus critiques. En fournissant des procédures claires et reconnues, cette norme contribue à l'optimisation des infrastructures ferroviaires à travers le monde. Elle s'intègre parfaitement dans une volonté globale d'harmonisation des exigences techniques et de performance, apportant ainsi un cadre solide pour les fabricants et les ingénieurs du secteur ferroviaire. En outre, en se basant sur l'ISO 22074-8:2022, cette norme renforce la confiance des utilisateurs dans les résultats des tests, favorisant l'adoption de pratiques de conception et d'entretien plus efficaces. Au final, la norme SIST EN ISO 22074-8:2024 joue un rôle fondamental dans la promotion de l'innovation et de la qualité au sein des systèmes ferroviaires, tout en restant alignée avec les attentes actuelles et futures du secteur.
The EN ISO 22074-8:2024 standard presents a comprehensive framework for evaluating the vertical stiffness of railway infrastructure components, specifically focusing on rail fastening systems. This document delineates laboratory test procedures essential for measuring both static and low-frequency dynamic stiffness of rail pads, baseplate pads, and complete rail fastening assemblies. One of the significant strengths of this standard is its commitment to providing precise testing methodologies that enhance the reliability and performance assessment of rail fastening systems. By establishing clear guidelines for evaluating vertical stiffness, EN ISO 22074-8:2024 facilitates consistency in testing outcomes, contributing to higher safety and operational efficiency in railway infrastructure. Furthermore, the relevance of this standard cannot be overstated, as it addresses critical performance criteria that directly impact the longevity and stability of rail systems. The ability to accurately determine the stiffness of fastening components aligns with engineering requirements to improve track performance, reduce maintenance costs, and enhance the overall durability of railway infrastructure. In summary, EN ISO 22074-8:2024 serves as a vital reference for stakeholders involved in railway engineering and manufacturing, ensuring that rail fastening systems meet stringent performance standards through well-defined testing procedures.
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