SIST EN 13146-4:2020

SLOVENSKI STANDARD
SIST EN 13146-4:2020
01-julij-2020
Nadomešča:
SIST EN 13146-4:2012+A1:2015
Železniške naprave - Zgornji ustroj proge - Preskušanje pritrdilnih sistemov - 4.
del: Učinek ponavljajoče se obremenitve
Railway applications - Track - Test methods for fastening systems - Part 4: Effect of
repeated loading
Bahnanwendungen - Oberbau - Prüfverfahren für Schienenbefestigungssysteme - Teil 4:
Dauerschwingversuch
Applications ferroviaires - Voie - Méthodes d'essai pour les systèmes de fixation - Partie
4 : Effets produits par des charges répétitives
Ta slovenski standard je istoveten z: EN 13146-4:2020
ICS:
93.100 Gradnja železnic Construction of railways
SIST EN 13146-4:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 13146-4:2020

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SIST EN 13146-4:2020


EN 13146-4
EUROPEAN STANDARD

NORME EUROPÉENNE

April 2020
EUROPÄISCHE NORM
ICS 93.100 Supersedes EN 13146-4:2012+A1:2014
English Version

Railway applications - Track - Test methods for fastening
systems - Part 4: Effect of repeated loading
Applications ferroviaires - Voie - Méthodes d'essai Bahnanwendungen - Oberbau - Prüfverfahren für
pour les systèmes de fixation - Partie 4 : Effets produits Schienenbefestigungssysteme - Teil 4:
par des charges répétitives Dauerschwingversuch
This European Standard was approved by CEN on 24 February 2020.

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, Turkey 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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13146-4:2020 E
worldwide for CEN national Members.

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SIST EN 13146-4:2020
EN 13146-4:2020 (E)
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms, definitions, symbols and abbreviations . 5
3.1 Terms and definitions . 5
3.2 Symbols and abbreviations . 6
4 Principle . 7
5 Apparatus . 7
5.1 Rail . 7
5.2 Actuator . 7
5.3 Load application head . 7
5.4 Displacement-measuring instruments. 7
5.4.1 Calibration procedure . 7
5.4.2 Calibration requirement . 7
5.4.3 Fixtures for mounting displacement-measuring instruments . 8
5.5 Force-measuring instruments . 8
5.6 Verification of calibration . 8
6 Test specimens . 8
6.1 Sleeper or other rail support . 8
6.2 Fastening . 8
7 Procedure for one rail . 8
7.1 General . 8
7.2 Preparation for test . 9
7.2.1 In line fastening . 9
7.2.2 Offset fastening . 9
7.3 Clamping force . 9
7.4 Longitudinal rail restraint . 10
7.5 Vertical stiffness of fastening assembly . 10
7.5.1 Static stiffness . 10
7.5.2 Low-frequency dynamic stiffness . 10
7.6 Cyclic loading . 10
7.6.1 Preparation for the cyclic load test. 10
7.6.2 Preliminary load cycles . 11
7.6.3 Continuation of the repeated load test . 11
7.6.4 Results required from the repeated load test . 11
7.7 Repeat tests . 15
7.8 Final inspection . 15
8 Alternative test procedure . 15
8.1 General . 15
8.2 Apparatus . 15
8.2.1 General . 15
8.2.2 Loading frame . 15
8.3 Procedure. 16
8.3.1 General . 16
8.3.2 Preparation for test . 16
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8.3.3 Clamping force . 16
8.3.4 Longitudinal rail restraint . 17
8.3.5 Vertical stiffness . 17
8.3.6 Cyclic loading. 17
8.3.7 Repeat tests . 17
8.3.8 Final inspection . 17
9 Test report . 18
Bibliography . 19

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SIST EN 13146-4:2020
EN 13146-4:2020 (E)
European foreword
This document (EN 13146-4:2020) 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 endorsement, at the latest by October 2020, and conflicting national standards shall
be withdrawn at the latest by October 2020.
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.
This document supersedes EN 13146-4:2012+A1:2014.
In this revision of EN 13146-4:2012+A1:2014, the procedure has been modified to clarify the detail of
some of the test procedures.
This document 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: 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 and uplift stiffness;
— Part 8: In-service testing;
— Part 9: Determination of stiffness;
— Part 10: Proof load test for pull-out resistance.
According to the CEN-CENELEC Internal Regulations, the national standards organisations 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, Turkey and the
United Kingdom.
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SIST EN 13146-4:2020
EN 13146-4:2020 (E)
1 Scope
This document specifies a laboratory test procedure for applying repeated displacement cycles
representative of the displacements caused by traffic on railway track. It is used for assessing the long
term performance of fastening systems.
The procedure is applicable to surface mounted rail on sleepers, bearers and slab track, and embedded
rail.
This test procedure applies to a complete fastening assembly.
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.
EN 13146-1, Railway applications — Track — Test methods for fastening systems — Part 1:
Determination of longitudinal rail restraint
EN 13146-7, Railway applications — Track — Test methods for fastening systems — Part 7:
Determination of clamping force and uplift stiffness
EN 13146-9:2020, Railway applications — Track — Test methods for fastening systems — Part 9:
Determination of stiffness
EN 13481-1:2012, Railway applications — Track — Performance requirements for fastening systems —
Part 1: Definitions
EN 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 7500-1:2018)
EN ISO 9513:2012, Metallic materials — Calibration of extensometer systems used in uniaxial testing (ISO
9513:2012)
3 Terms, 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.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp/ui
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3.2 Symbols and abbreviations
For the purposes of this document, the following symbols apply.
α angle between the load line and a line normal to the running surface of the rails, in degrees;
F maximum axial longitudinal load on the rail without non-elastic displacement occurring, in kN;
F force applied to assembly in measurement of static stiffness of assembly, in kN;
SAmax
P component of force parallel to the running surface of the rails, in kN;
L
P component of force normal to the running surface of the rails, in kN;
V
X position of the line of application of P below the centre of curvature of the gauge corner of the
L
rail head as shown in Figure 1, in mm.
P
L
= tanα
P
V
NOTE 1
NOTE 2 Running surface is defined in EN 13481-1:2012.

Key
1 Centre of gauge corner radius
2 Centre line of rail profile
3 Line of load application
Figure 1 — Position of load application
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EN 13146-4:2020 (E)
4 Principle
A constant amplitude, cyclic force is applied by a single actuator at a predetermined load line and
position on the rail head. The load, position and line of application to be used are determined from the
vertical stiffness of the fastening assembly, axle loads and curve conditions of the track for which the
fastening assembly is being tested.
Performance is determined by the change in clamping force, longitudinal rail restraint, vertical stiffness
and rail position, and visual inspection of the components during test.
5 Apparatus
5.1 Rail
Short lengths of rail (approximately 0,5 m per rail seat or longer if required), of the section for which
the fastening assembly under test is designed. The rail shall be unlaminated and neither have loose rust
on the surface nor be polished on the foot by repeated testing.
The head of the rail may be modified to accommodate the load application head except when testing
fastenings which support the web of the rail. In this case, the dimension X, as shown in Figure 1, refers
to the design rail section for the fastening assembly.
For embedded rail, the rail is part of the test specimen and its length is specified in 6.1.
5.2 Actuator
Actuator capable of applying a force of up to 150 kN in a cyclic manner at a frequency of (4 ± 1) Hz.
NOTE For simultaneous loading of two and four rail seats the required capacity will be correspondingly
greater.
5.3 Load application head
A head in contact with the rail which is capable of transmitting the applied force to a rail at the required
position relative to the rail head.
5.4 Displacement-measuring instruments
5.4.1 Calibration procedure
If contacting displacement-measuring instruments are used they shall conform to EN ISO 9513:2012,
Table 2, Class 2.
If non-contacting displacement-measuring instruments are used they shall be calibrated to ensure that
they are capable of measuring the displacement of the rail, relative to the supporting sleeper or other
element as required in 5.4.2.
5.4.2 Calibration requirement
The instrument shall be capable of measuring displacements as follows:
— for assemblies with an expected low-frequency dynamic stiffness ≤ 100 MN/m, displacement-
measurement within ± 0,02 mm;
— for assemblies with an expected low-frequency dynamic stiffness
...