SIST EN 13481-4:2022
(Main)Railway applications - Track - Performance requirements for fastening systems - Part 4: Fastening systems for steel sleepers in ballast
Railway applications - Track - Performance requirements for fastening systems - Part 4: Fastening systems for steel sleepers in ballast
This European Standard is applicable to fastening systems in Categories A–C and E as specified in
EN 13481-1:2012, 3.1, for use on steel sleepers in ballasted track with maximum axle loads, and minimum curve radii as shown in Table 1.
Table 1 - Fastening category criteria
Category Max design axle load Min curve radius
kN m
A 130 40
B 180 80
C 260 150
D 260 400
E 350 150
NOTE The maximum axle load for categories A and B does not apply to maintenance vehicles.
The requirements apply to:
- fastening systems which act on the foot and/or web of the rail including direct fastening systems
and indirect fastening systems;
- fastening systems for rail sections included in EN 13674-1 (excluding 49E4) or EN 13674-4.
This standard is not applicable to fastening systems for other rail sections, rigid fastening systems or
special fastening systems used at bolted joints or glued joints.
This standard should only be used for type approval of complete fastening systems.
Bahnanwendungen - Oberbau - Leistungsanforderungen für Schienenbefestigungssysteme - Teil 4: Befestigungssysteme für Stahlschwellen
Dieses Dokument ist anzuwenden für Schienenbefestigungssysteme der Kategorien A bis E, wie in EN 13481 1:2012, 3.1, festgelegt, für die Verwendung auf rechteckigen Stahlschwellen in Schottergleisen mit den maximalen Aus¬legungsachslasten und Mindestbogenradien nach Tabelle 1.
Die Anforderungen gelten für:
— Befestigungssysteme, die am Schienenfuß und/oder Schienensteg wirken, einschließlich direkter und indirekter Befestigungssysteme;
— Befestigungssysteme für Schienenprofile nach EN 13674 1 (außer 49E4) oder EN 13674 4.
Dieses Dokument ist nicht anzuwenden für Befestigungssysteme für andere Schienenprofile, starre Befesti-gungssysteme, spezielle Befestigungssysteme, die für verschraubte oder geklebte Schienenstöße verwendet werden, oder Spezialbefestigungen mit niedriger Spannkraft, die zur Reduzierung von wechselseitigen Ein¬flüssen von Gleis und Brücke verwendet werden.
Dieses Dokument gilt für die Typzulassung kompletter Befestigungssysteme.
Applications ferroviaires - Voie - Exigences de performance pour les systèmes de fixation - Partie 4 : Systèmes de fixation pour traverses en acier
Le présent document est applicable aux systèmes de fixation des catégories A à E comme spécifiée dans l'EN 13481 1:2012, 3.1 pour utilisation sur des traverses rectilinéaires en acier en voie ballastée avec des charges à l'essieu maximales et des rayons de courbure minimaux selon le Tableau 1.
[Tableau 1]
Les exigences s'appliquent :
- aux systèmes de fixation qui agissent sur le patin et/ou l'âme du rail, y compris les systèmes de fixation directs et les systèmes avec selle ;
- aux systèmes de fixation pour les profils de rail décrits dans l'EN 13674 1 (à l'exclusion du profil 49E4) et l'EN 13674 4.
Le présent document ne s'applique pas aux systèmes de fixation destinés à d'autres profils de rail, aux systèmes de fixation rigides, aux systèmes de fixation spéciaux utilisés au droit des éclisses ou aux fixations par effort d'application au patin du rail utilisées pour limiter les effets liés à l'interaction voie-pont.
Le présent document est destiné à l'homologation de type de systèmes de fixation complets.
Železniške naprave - Zgornji ustroj proge - Zahteve za izdelavo pritrdilnih sistemov - 4. del: Pritrdilni sistemi za jeklene prage v tirni gredi
Ta evropski standard se uporablja za pritrdilne sisteme v kategorijah od A do C iz točke 3.1 standarda EN 13481-1:2012 za jeklene prage pri zgornjem ustroju s tamponskim slojem z največjo osno obremenitvijo in najmanjšim krivinskim polmerom, kot je prikazano v preglednici 1.
Preglednica 1: Merila za kategorije pritrjevanja
Kategorija Največja osna obremenitev Najmanjši krivinski polmer
kN m
A 130 40
B 180 80
C 260 150
D 260 400
E 350 150
OPOMBA: Največja osna obremenitev za kategoriji A in B ne velja za vzdrževalna vozila.
Zahteve se uporabljajo za:
– pritrdilne sisteme, ki delujejo na vznožje in/ali stojino tirnice, vključno z neposrednimi in posrednimi pritrdilnimi sistemi;
– pritrdilne sisteme za dele železnice iz standarda EN 13674-1 (razen 49E4) ali EN 13674-4.
Ne uporablja se za pritrdilne sisteme za druge dele železnice, toge pritrdilne sisteme
ali posebne pritrdilne sisteme, ki se uporabljajo pri zakovičenih spojih ali zlepljenih spojih.
Ta standard naj se uporablja le za odobritev tipa celotnih pritrdilnih sistemov.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 13481-4:2022
01-september-2022
Nadomešča:
SIST EN 13481-4:2012
Železniške naprave - Zgornji ustroj proge - Zahteve za izdelavo pritrdilnih sistemov
- 4. del: Pritrdilni sistemi za jeklene prage v tirni gredi
Railway applications - Track - Performance requirements for fastening systems - Part 4:
Fastening systems for steel sleepers in ballast
Bahnanwendungen - Oberbau - Leistungsanforderungen für
Schienenbefestigungssysteme - Teil 4: Befestigungssysteme für Stahlschwellen
Applications ferroviaires - Voie - Exigences de performance pour les systèmes de
fixation - Partie 4 : Systèmes de fixation pour traverses en acier
Ta slovenski standard je istoveten z: EN 13481-4:2022
ICS:
93.100 Gradnja železnic Construction of railways
SIST EN 13481-4:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 13481-4:2022
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SIST EN 13481-4:2022
EN 13481-4
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2022
EUROPÄISCHE NORM
ICS 93.100 Supersedes EN 13481-4:2012
English Version
Railway applications - Track - Performance requirements
for fastening systems - Part 4: Fastening systems for steel
sleepers in ballast
Applications ferroviaires - Voie - Exigences de Bahnanwendungen - Oberbau -
performance pour les systèmes de fixation - Partie 4 : Leistungsanforderungen für
Systèmes de fixation pour traverses en acier Schienenbefestigungssysteme - Teil 4:
Befestigungssysteme für Stahlschwellen im
Schotterbett
This European Standard was approved by CEN on 8 May 2022.
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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13481-4:2022 E
worldwide for CEN national Members.
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SIST EN 13481-4:2022
EN 13481-4:2022 (E)
Contents Page
European foreword . 3
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Symbols . 9
5 Requirements determined by laboratory testing . 9
5.1 Specimens used for laboratory testing . 9
5.2 Longitudinal rail restraint . 10
5.2.1 General case . 10
5.2.2 Special case for long structures . 10
5.3 Torsional resistance . 10
5.4 Clamping force . 10
5.5 Pad and assembly stiffness . 10
5.6 Effect of repeated loading . 11
5.7 Effect of exposure to severe environmental conditions . 12
5.8 Electrical resistance . 12
6 Other requirements . 12
6.1 Dimensions . 12
6.2 Effect of fastening system tolerances on track gauge . 13
6.3 In-service testing . 14
6.4 Attenuation of noise and vibration . 14
7 Fitness for purpose . 15
8 Marking, labelling and packaging . 15
Annex A (normative) Effect of repeated loading – Steel sleeper configuration . 16
A.1 Symbols . 16
A.2 Test arrangement . 16
A.3 Test report . 17
Annex B (informative) Vibration and noise . 18
B.1 General . 18
B.2 Symbols . 18
B.3 Parameters for environmental vibration calculations . 18
B.4 Calculating the vibration attenuation . 19
B.5 Environmental noise . 19
Bibliography . 20
2
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SIST EN 13481-4:2022
EN 13481-4:2022 (E)
European foreword
This document (EN 13481-4:2022) 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 January 2023, and conflicting national standards shall
be withdrawn at the latest by January 2023.
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 13481-4:2012.
The main changes compared to the previous edition are as follows:
a) inclusion of details of in-service testing, replacing the reference to EN 13146-8, which is to be
withdrawn;
b) changes to the loading conditions for Category B fastenings;
c) editorial changes to make clear which requirements are based on laboratory testing;
d) removal of Annex ZA.
This European Standard is one of the series EN 13481 “Railway applications — Track — Performance
requirements for fastening systems”, which consists of the following parts:
— Part 1: Definitions
— Part 2: Fastening systems for concrete sleepers in ballast
— Part 3: Fastening systems for wood and polymeric composite sleepers
— Part 4: Fastening systems for steel sleepers
— Part 5: Fastening systems for ballastless tracks
— Part 7: Fastening systems for switches and crossings, check rails, insulated rail joints and rail expansion
devices
NOTE Part 6 does not exist in this series.
These European Standards are supported by the test methods in the series EN 13146 “Railway
applications — Track — Test methods for fastening systems”.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association.
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.
3
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SIST EN 13481-4:2022
EN 13481-4:2022 (E)
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.
4
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SIST EN 13481-4:2022
EN 13481-4:2022 (E)
Introduction
A series of tests is used to assess the suitability of fastening systems for use in railway track, i.e. for type
approval of complete fastening systems. This document only sets requirements considered relevant to
ensure the safe, long-term operation of the track systems. The test methods are described in other
associated standards.
The various Categories of rail fastenings used in this document are defined in EN 13481-1:2012.
5
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SIST EN 13481-4:2022
EN 13481-4:2022 (E)
1 Scope
This document is applicable to fastening systems, in Categories A – E as specified in EN 13481-1:2012,
3.1, for use on rectilinear steel sleepers in ballasted track with maximum axle loads and minimum curve
radii in accordance with Table 1.
Table 1 — Fastening category criteria
Maximum design axle load Minimum curve radius
Category
kN m
A 130 40
B 180 80
C 260 150
D 260 400
E 350 150
NOTE The maximum axle load for Categories A and B does not apply to maintenance vehicles.
The requirements apply to:
— fastening systems which act on the foot and/or web of the rail including direct fastening systems
and indirect fastening systems;
— fastening systems for rail sections included in EN 13674-1 (excluding 49E4) or EN 13674-4.
This document is not applicable to fastening systems for other rail sections, rigid fastening systems,
special fastening systems used at bolted joints or glued joints or special low clamping force fastenings
used to mitigate track-bridge interaction effects.
This document is for type approval of complete fastening systems.
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 13146-1:2019, Railway applications — Track — Test methods for fastening systems — Part 1:
Determination of longitudinal rail restraint
EN 13146-2:2012, Railway applications — Track — Test methods for fastening systems — Part 2:
Determination of torsional resistance
EN 13146-4:2020, Railway applications — Track — Test methods for fastening systems — Part 4: Effect of
repeated loading
6
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SIST EN 13481-4:2022
EN 13481-4:2022 (E)
1
EN 13146-5:2012 , Railway applications — Track — Test methods for fastening systems — Part 5:
Determination of electrical resistance
EN 13146-6:2012, Railway applications — Track — Test methods for fastening systems — Part 6: Effect of
severe environmental conditions
EN 13146-7:2019, 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 13674-1:2011+A1:2017, Railway applications — Track — Rail — Part 1: Vignole railway rails 46 kg/m
and above
EN 13674-4:2019, Railway applications — Track — Rail — Part 4: Vignole railway rails from 27 kg/m to,
but excluding 46 kg/m
EN 17343:2020, Railway applications — General terms and definitions
3 Terms and definitions
For the purposes of this document, the following terms and definitions given in EN 13481-1:2012,
EN 17343:2020 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
datum for applied test loads
surface corresponding to the flat bottom surface of a conventional concrete sleeper used as a reference
plane to define the orientation of the applied test loads
Note 1 to entry: For fastenings on sleepers which do not have a flat bottom surface, the orientation of the test
loads is defined relative to “running surface of the rails” which is defined in EN 13848-1:2019. See Figure 1.
1
As impacted by EN 13146-5:2012/AC:2017.
7
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SIST EN 13481-4:2022
EN 13481-4:2022 (E)
Key
1 centre of gauge corner radius
2 centre line of the rail profile
3 line of load application
Figure 1 — Load application position
3.2
purchaser
operator, owner or user of the rail fastening system
3.3
supplier
body responsible for the use of this European Standard
Note 1 to entry: Sometimes the manufacturer is also the supplier.
8
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SIST EN 13481-4:2022
EN 13481-4:2022 (E)
4 Symbols
For the purposes of this document, the following symbols apply.
F static preload applied in measurement of high frequency stiffness of assembly, in kN;
HFAmax
F minimum force applied in measurement of low frequency dynamic stiffness of assembly, in
LFA1
kN;
F reference force for measurement of low frequency dynamic stiffness of assembly, in kN;
LFAmax
F notional fastening clip force assumed for measurement of low frequency dynamic stiffness of
LFP1
pad, in kN;
F reference force for measurement of low frequency dynamic stiffness of pad, in kN;
LFPmax
F axial load at which gross slip occurs in the longitudinal rail restraint test (EN 13146-1:2019),
max
in kN;
F notional fastening clip force assumed for measurement of static stiffness of assembly, in kN;
SA1
F force applied to assembly in measurement of static stiffness of assembly, in kN;
SAmax
F notional fastening clip force assumed for measurement of static stiffness of pad, in kN;
SP1
F force applied to pad in measurement of static stiffness of pad, in kN;
Spmax
k low frequency dynamic stiffness of assembly, in MN/m;
LFA
P component of load parallel to the datum for applied test loads, in kN;
L
P component of load normal to the datum for applied test loads in kN;
V
X distance between the line of application of P and the centre of the gauge corner radius of the
L
rail head as shown in Figure 1, in mm;
α angle between the load line and a line normal to the datum for applied test loads as shown in
Figure 1.
5 Requirements determined by laboratory testing
5.1 Specimens used for laboratory testing
The laboratory tests described in 5.2 to 5.8 shall be carried out using a steel sleeper which fulfils the
following requirements:
— rail seat inclination is no greater than the inclination on the sleeper for which the type of fastening is
to be used.
— thickness of steel directly under the fastening and in the rail seat area is no greater than the thickness
of steel on the sleeper for which the type of fastening is to be used.
For example, a fastening tested successfully on a sleeper with 1:40 inclination does not need to be re-
tested at 1:20 inclination. A fastening tested successfully on a sleeper 10 mm thick at the rail seat does
not need to be re-tested on a sleeper 12 mm thick.
9
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SIST EN 13481-4:2022
EN 134
...
SLOVENSKI STANDARD
oSIST prEN 13481-4:2021
01-april-2021
Železniške naprave - Zgornji ustroj proge - Zahteve za pritrdilne sisteme - 4. del:
Pritrdilni sistemi za jeklene prage v tirni gredi
Railway applications - Track - Performance requirements for fastening systems - Part 4:
Fastening systems for steel sleepers in ballast
Bahnanwendungen - Oberbau - Leistungsanforderungen für
Schienenbefestigungssysteme - Teil 4: Befestigungssysteme für Stahlschwellen
Applications ferroviaires - Voie - Exigences de performance pour les systèmes de
fixation - Partie 4 : Systèmes de fixation pour traverses en acier
Ta slovenski standard je istoveten z: prEN 13481-4
ICS:
93.100 Gradnja železnic Construction of railways
oSIST prEN 13481-4:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 13481-4:2021
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oSIST prEN 13481-4:2021
DRAFT
EUROPEAN STANDARD
prEN 13481-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2021
ICS 93.100 Will supersede EN 13481-4:2012
English Version
Railway applications - Track - Performance requirements
for fastening systems - Part 4: Fastening systems for steel
sleepers in ballast
Applications ferroviaires - Voie - Exigences de Bahnanwendungen - Oberbau -
performance pour les systèmes de fixation - Partie 4: Leistungsanforderungen für
Systèmes de fixation pour traverses en acier Schienenbefestigungssysteme - Teil 4:
Befestigungssysteme für Stahlschwellen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 256.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13481-4:2021 E
worldwide for CEN national Members.
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oSIST prEN 13481-4:2021
prEN 13481-4:2021 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Symbols . 8
5 Requirements determined by laboratory testing . 8
5.1 Specimens used for laboratory testing . 8
5.2 Longitudinal rail restraint . 8
5.3 Torsional resistance . 9
5.4 Clamping force . 9
5.5 Pad and assembly stiffness . 9
5.6 Effect of repeated loading . 9
5.7 Effect of exposure to severe environmental conditions . 10
5.8 Electrical resistance . 10
6 Other Requirements . 11
6.1 Dimensions . 11
6.2 Effect of fastening system tolerances on track gauge . 12
6.3 In-service testing . 12
6.4 Attenuation of noise and vibration . 13
7 Fitness for purpose . 13
8 Marking, labelling and packaging . 13
Annex A (normative) Effect of repeated loading – Steel sleeper configuration . 14
A.1 Symbols . 14
A.2 Test arrangement . 14
A.3 Test report . 15
Annex B (informative) Vibration and noise . 16
B.1 General . 16
B.2 Symbols . 16
B.3 Parameters for environmental vibration calculations . 16
B.4 Calculating the vibration attenuation . 17
B.5 Environmental noise . 17
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive (EU) 2016/797 aimed to be covered . 18
Bibliography . 20
2
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oSIST prEN 13481-4:2021
prEN 13481-4:2021 (E)
European foreword
This document (prEN 13481-4:2021) has been prepared by Technical Committee CEN/TC 256 “Railway
Applications”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 13481-4:2012.
The main changes in this revision of EN 13481-2:2012 are as follows:
a) The inclusion of details of in service testing, replacing the reference to EN13146-8, which is to be
withdrawn.
b) Changes to the loading conditions for Category B fastenings.
c) The inclusion of details of in service testing, replacing the reference to EN 13146-8, which is to be
withdrawn.
d) Editorial changes to make clear which requirements are based on laboratory testing.
This European Standard is one of the series EN 13481 “Railway applications – Track – Performance
requirements for fastening systems” which consists of the following parts:
— Part 1: Definitions
— Part 2: Fastening systems for concrete sleepers in ballast
— Part 3: Fastening systems for wood and polymeric composite sleepers
— Part 4: Fastening systems for steel sleepers
— Part 5: Fastening systems for ballastless track
— Part 7: Fastening systems for switches and crossings, check rails, rail expansion devices and insulated
rail joints.
NOTE Part 6 does not exist in this series.
These European Standards are supported by the test methods in the series EN 13146 “Railway
applications – Track – Test methods for fastening systems”.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive, see informative Annex ZA, which is an integral part of this
document.
3
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oSIST prEN 13481-4:2021
prEN 13481-4:2021 (E)
Introduction
A series of tests is used to assess the suitability of fastening systems for use in railway track i.e. for type
approval of complete fastening systems. This document only sets requirements considered relevant to
ensure the safe, long term operation of the track systems. The test methods are described on other
associated standards. The test methods are described in other associated standards.
The various Categories of rail fastenings used in this standard are defined in EN 13481-1:2012.
4
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oSIST prEN 13481-4:2021
prEN 13481-4:2021 (E)
1 Scope
This document is applicable to fastening systems, in categories A –E as specified in EN 13481-1:2012,
3.1, for use on rectilinear steel sleepers in ballasted track with maximum axle loads and minimum curve
radii in accordance with Table 1.
Table 1 — Fastening category criteria
Maximum design axle Minimum curve
load radius
Category
kN m
A 130 40
B 180 80
C 260 150
D 260 400
E 350 150
NOTE The maximum axle load for categories A and B does not apply to
maintenance vehicles.
The requirements apply to:
— fastening systems which act on the foot and/or web of the rail including direct fastening systems
and indirect fastening systems;
— fastening systems for rail sections included in EN 13674-1 (excluding 49E4) or EN 13674-4
This document is not applicable to fastening systems for other rail sections, rigid fastening systems,
special fastening systems used at bolted joints or glued joints or special low clamping force fastenings
used to mitigate track-bridge interaction effects.
This document is for type approval of complete fastening systems.
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 13146-1:2019, Railway applications - Track - Test methods for fastening systems - Part 1:
Determination of longitudinal rail restraint
EN 13146-2:2012, Railway applications - Track - Test methods for fastening systems - Part 2:
Determination of torsional resistance
EN 13146-4:2020, Railway applications - Track - Test methods for fastening systems - Part 4: Effect of
repeated loading
5
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oSIST prEN 13481-4:2021
prEN 13481-4:2021 (E)
1
EN 13146-5:2012 , Railway applications – Track – Test methods for fastening systems – Part 5:
Determination of electrical resistance
EN 13146-6:2012, Railway applications - Track - Test methods for fastening systems - Part 6: Effect of
severe environmental conditions
EN 13146-7:2019, 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 13674-1:2011+A1:2017, Railway applications - Track - Rail - Part 1: Vignole railway rails 46 kg/m
and above
EN 13674-4:2019, Railway applications - Track - Rail - Part 4: Vignole railway rails from 27 kg/m to, but
excluding 46 kg/m
3 Terms and definitions
For the purposes of this document, the following terms and definitions and 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 http://www.iso.org/obp
3.1
datum for applied test loads
flat bottom surface of a conventional concrete sleeper used as a reference plane to define the
orientation of the applied test loads
Note 1 to entry: For fastenings on sleepers which do not have a flat bottom surface, the orientation of the test
loads is defined relative to “running surface of the rails” which is defined in EN 13848-1:2018. See Figure 1.
1
Document impacted by AC:2007.
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Key
1 centre of gauge corner radius
2 centre line of the rail profile
3 line of load application
Figure 1 — Load application position
3.2
purchaser
operator, owner or user of the rail fastening system
3.3
supplier
body responsible for the use of this European Standard
Note 1 to entry: Sometimes the manufacturer is also the supplier.
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4 Symbols
For the purposes of this document, the following symbols apply.
F static preload applied in measurement of high frequency stiffness of assembly, in kN;
HFAmax
F minimum force applied in measurement of dynamic low frequency stiffness of assembly, in
LFA1
kN;
F reference force for measurement of dynamic low frequency stiffness of assembly, in kN;
LFAmax
F notional fastening clip force assumed for measurement of dynamic low frequency stiffness of
LFP1
pad, in kN;
F reference force for measurement of dynamic low frequency stiffness of pad, in kN;
LFPmax
F axial load at which gross slip occurs in the longitudinal rail restraint test (EN 13146-1:2019),
max
in kN;
F notional fastening clip force assumed for measurement of static stiffness of assembly, in kN;
SA1
F force applied to assembly in measurement of static stiffness of assembly, in kN;
SAmax
F notional fastening clip force assumed for measurement of static stiffness of pad, in kN;
SP1
F force applied to pad in measurement of static stiffness of pad, in kN;
Spmax
k transfer stiffness in measurement of high frequency stiffness of assembly, in N/m;
HFAD
k low frequency dynamic stiffness of assembly, in MN/m;
LFA
P component of load parallel to the datum for applied test loads, in kN;
L
P component of load normal to the datum for applied test loads in kN;
V
X distance between the line of application of P and the centre of the gauge corner radius of the
L
rail head as shown in Figure 1, in mm;
α angle between the load line and a line normal to the datum for applied test loads as shown in
Figure 1.
5 Requirements determined by laboratory testing
5.1 Specimens used for laboratory testing
The laboratory tests described in 5.2 to 5.7 shall be carried out using a steel sleeper which has a rail
seat inclination no greater than the inclination to be used on the sleeper for which the type of fastening
is to be used and a thickness of steel directly under the fastening and in the rail seat area which is no
greater than the thickness of steel on the sleeper for which the type of fastening is to be used.
NOTE: On this basis a fastening tested successfully on a sleeper with 1:40 inclination does not need to be re-tested
at 1:20 inclination. A fastening tested successfully on a sleeper 10 mm thick at the rail seat does not need to be re-
tested on a sleeper 12 mm thick.
5.2 Longitudinal rail restraint
The longitudinal rail restraint shall be not less than 7 kN when measured by the procedure in
EN 13146-1:2019.
On structures such as long bridges, the longitudinal force transmitted between the track and the
structure may be calculated by the method described in CEN/TR 17231 and used in
EN 1991-2:2003/AC:2010. The value of F measured in accordance with EN 13146-1:2019 may be
max
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used in the calculation. In such cases, and subject to agreement between the purchaser and supplier, the
minimum requirement for longitudinal restraint may be reduced.
5.3 Torsional resistance
When required by the purchaser, the torsional resistance shall be measured by the procedure in
EN 13146-2:2012 and the result reported.
5.4 Clamping force
This shall be determined by the procedure in EN 13146-7:2019. The result shall be reported.
This requirement is not applicable to web support fastening systems.
5.5 Pad and assembly stiffness
As required by EN 13146-4:2020, the assembly static stiffness and assembly low frequency dynamic
stiffness shall be measured in accordance with EN 13146-9:2020. If there is no elastic pad in the
fastening assembly (i.e no rail pad or baseplate pad) it is not necessary
...
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