oSIST prEN 17318-1:2019

Railway applications - Infrastructure - Plastic sleepers and bearers - Part 1: General requirements

This part of the EN xxxxx series defines the technical criteria and control procedures which need to be satisfied by the constituent materials and the finished plastic sleepers and bearers.
The main requirement of plastic sleepers and bearers is transmission of vertical, lateral and longitudinal loads from the rails to the ballast or other support. In use they are also exposed to environmental and chemical impacts, which could be detrimental to sleeper performance.
The tests defined in this standard provide assurance of the capability of sleepers or bearers to resist repetitive loading and provide sufficient durability. In addition, controls are placed on manufacturing processes and tests to ensure that the plastic will not suffer degradation in service through chemical reaction and frost damage.
.

Bahnanwendungen - Infrastruktur - Gleis- und Weichenschwellen aus Kunststoff - Teil 1: Allgemeine Anforderungen

Applications ferroviaires - Infrastructure - Traverses et supports en plastique - Partie 1 : Exigences générales

Železniške naprave - Infrastruktura - Plastični pragi in kretniški plastični pragi - 1. del: Splošne zahteve

General Information

• Status: Not Published
• Public Enquiry End Date: 28-Feb-2019
• ICS: 45.080 - Rails and railway components
• Technical Committee: IŽNP - Reilway applications
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 21-Dec-2018
• Due Date: 10-May-2019
• Completion Date: 07-Mar-2019
• Directive: 2008/57/EC - Directive 2008/57/EC of the European Parliament and of the Council of 17 June 2008 on the interoperability of the rail system within the Community (Recast)
• Mandate: M/483 - Mandate for programming and standardisation addressed to the European standardisation bodies under directive 2008/57/EC in the field of the interoperability of the rail system within the European Union
• Ref Project: prEN 17318-1 - Railway applications - Infrastructure - Plastic sleepers and bearers - Part 1: General requirements

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 17318-1:2019
01-februar-2019
äHOH]QLãNHQDSUDYH,QIUDVWUXNWXUD3ODVWLþQLSUDJLLQNUHWQLãNLSODVWLþQLSUDJL
GHO6SORãQH]DKWHYH
Railway applications - Infrastructure - Plastic sleepers and bearers - Part 1: General
requirements
Bahnanwendungen - Infrastruktur - Gleis- und Weichenschwellen aus Kunststoff - Teil 1:
Allgemeine Anforderungen
Applications ferroviaires - Infrastructure - Traverses et supports en plastique - Partie 1 :
Exigences générales
Ta slovenski standard je istoveten z: prEN 17318-1
ICS:
45.080 7UDþQLFHLQåHOH]QLãNLGHOL Rails and railway
components
oSIST prEN 17318-1:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 17318-1:2019


DRAFT
EUROPEAN STANDARD
prEN 17318-1
NORME EUROPÉENNE

EUROPÄISCHE NORM

December 2018
ICS 45.080
English Version

Railway applications - Infrastructure - Plastic sleepers and
bearers - Part 1: General requirements
Applications ferroviaires - Infrastructure - Traverses et Bahnanwendungen - Infrastruktur - Gleis- und
supports en plastique - Partie 1 : Exigences générales Weichenschwellen aus Kunststoff - Teil 1: Allgemeine
Anforderungen
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17318-1:2018 E
worldwide for CEN national Members.

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Contents
European foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and symbols . 7
3.1 Terms and definitions . 7
3.2 Symbols . 10
4 General Characteristics . 12
4.1 General . 12
4.2 Geometrical design and tolerances . 12
4.3 Mass . 14
4.4 Surface finish . 14
4.5 Loading. 15
4.5.1 Loads . 15
4.5.2 Load distribution . 15
4.6 Characteristic bending moments . 15
4.7 Ecodesign . 15
5 Quality control . 16
5.1 General . 16
5.2 Quality control during design approval tests . 16
5.3 Quality control during manufacturing . 17
6 Documentation . 17
6.1 General . 17
6.2 Data to be supplied by the purchaser . 17
6.3 Data to be provided by the supplier . 18
6.3.1 Before the design approval tests . 18
6.3.2 After the design approval tests . 18
6.3.3 Prior to start-up of production. 18
6.4 Marking . 18
7 Product testing . 18
7.1 General . 18
7.2 Tests on product . 19
7.2.1 General . 19
7.2.2 Bending resistance . 19
7.2.3 Thermal expansion . 23
7.2.4 Fire. 23
7.3 Tests on material characteristics . 23
7.3.1 Chemical resistance and compatibility . 23
7.3.2 Environmental resistance . 23
7.3.3 Environmental compatibility . 23
7.3.4 Mechanical properties . 24
7.4 Interface between the rail and the sleeper . 24
7.4.1 Permanent deformation of screw/insert in function of temperature . 24
7.4.2 Tests in combination with the fastening system . 24
7.5 Additional tests for consideration . 24
7.5.1 Fitness for contact with ballast . 24
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Annex A (informative) Definition and recommendation for measurement of rail seat
inclination and twist between rail seats . 26
Annex B (informative) Design Methods and Factors . 27
B.1 General . 27
B.1.1 Introduction. 27
B.1.2 Determination of characteristic bending moments . 27
B.1.3 The determination of test bending moments . 28
B.2 Rail seat load . 30
B.2.1 Normal service increment for the dynamic wheel load . 30
B.2.2 Distribution of vertical loads in longitudinal direction . 30
B.2.2.1 Theoretical distribution . 30
B.2.2.2 Effect of support faults . 32
B.2.3 Attenuation effects of elastic rail pads and of elastic sleeper body . 33
B.2.4 Calculation of the dynamic rail seat load . 33
B.3 Characteristic bending moments . 33
B.3.1 General . 33
B.3.2 Calculation using the elastic beam on elastic foundation . 33
B.3.3 Load distribution for the rail seat load . 34
B.3.4 Rail seat section . 35
B.3.4.1 Positive bending moment . 35
B.3.4.2 Negative bending moment. 36
B.3.5 Sleeper centre section . 36
B.3.5.1 Negative bending moment. 36
B.3.5.2 Positive bending moment . 37
B.4 Test bending moments . 38
B.4.1 Increased service load level . 38
B.4.2 Exceptional loads . 38
B.4.3 Accidental loads . 38
B.4.4 Definition of k . 39
3
Annex C (informative) Calculation of bending moments for bridge sleepers in ballastless
track . 40
C.1 General . 40
C.1.1 Introduction. 40
C.1.2 Determination of characteristic bending moments . 40
C.1.3 The determination of test bending moments . 40
C.2 Rail seat load . 40
C.2.1 Normal service increment for the dynamic wheel load . 40
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C.2.2 Distribution of vertical loads in longitudinal direction . 40
C.2.2.1 Theoretical distribution . 40
C.2.3 Attenuation effects of elastic rail pads and of elastic sleeper body . 41
C.2.4 Calculation of the dynamic rail seat load. 41
C.3 Characteristic bending moments . 41
C.3.1 General . 41
C.3.2 Calculation using the elastic beam on elastic supports . 41
C.3.3 Load distribution for the rail seat load . 42
C.3.4 Characteristic bending moments . 42
C.4 Test bending moments . 42
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 2008/57/EC aimed to be covered . 43
Bibliography . 46


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oSIST prEN 17318-1:2019
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European foreword
This document (prEN 17318-1:2018) 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 European Standard is one of the series EN 17318 “Railway applications – Infrastructure – Plastic
sleepers and bearers”, which consist of the following parts:
— Part 1: General requirements;
— Part 2: Product testing;
— Part 3: Material characteristics.
This European Standard is used as the technical basis for transaction between corresponding parties
(purchaser – supplier).
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(s), see informative Annex ZA, which is an integral part of this
document.
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Introduction
This part of the standard defines the general characteristics for plastic sleepers and bearers and is used
in conjunction with the following parts:
— Part 2: Product testing;
— Part 3: Material Characteristics.
Plastic sleepers and bearers are safety critical components for railway applications. They are not
covered by any other standards.
As safety critical components, an agreement is needed between purchaser and supplier to operate a
factory Quality System.
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1 Scope
This document defines the technical criteria and control procedures which need to be satisfied by the
constituent materials and the finished plastic sleepers and bearers.
The main requirement of plastic sleepers and bearers is transmission of vertical, lateral and
longitudinal loads from the rails to the ballast or other support. In use they are also exposed to
environmental and chemical impacts, which could influence sleeper performance.
The tests defined in this standard provide assurance of the capability of sleepers or bearers to resist
repetitive loading and provide sufficient durability. In addition, controls are placed on manufacturing
processes and tests to ensure that the plastic will not suffer unacceptable degradation in service.
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 13146-3, Railway applications - Track - Test methods for fastening systems - Part 3: Determination of
attenuation of impact loads
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions 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
3.1.1
purchaser
body responsible for purchasing the product on the user’s behalf
3.1.2
supplier
body responsible for the use of the European Standard in response to the purchaser’s requirement. The
supplier is also responsible for requirements which apply to the producer or manufacturer
3.1.3
sleeper
transverse component of the track which controls the gauge and transmits loads from the rail to the
ballast or other sleeper support
3.1.4
bearer for switches and crossings
transverse component of switches and crossings which control the relative geometry of two or more
running rails and different pieces of special track work, and transmits loads from the rails to the ballast
or other bearer support
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3.1.5
bending moment
moment applied on the plastic sleeper or bearer which produces tension and compression in the
element
3.1.6
positive bending moment
moment which produces tension at the bottom of the plastic sleeper or bearer
3.1.7
negative bending moment
moment which produces tension at the top of the plastic sleeper or bearer
3.1.8
rail seat
area on which a running rail rests
3.1.9
rail seat area
rail seat and the immediate area around the fastening system
3.1.10
rail seat bending moment
moment under the centre line of the rail
3.1.11
centre bending moment
moment at the centre part of a monoblock sleeper
3.1.12
monoblock sleeper
Sleeper consisting of one block of material
3.1.13
twin-block sleeper
sleeper in which two blocks are connected by a connecting bar
3.1.14
block
short plastic element which transmits loads from one rail to the ballast or other support
3.1.15
test load
load applied during testing
3.1.16
dynamic rail seat load

Pk
characteristic load on a rail seat of the sleeper for normal service dynamic loading
3.1.17
characteristic bending moment
M
k
bending moment from dynamic rail seat load P
k
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3.1.18
characteristic positive bending moment for rail seat section
M
k,r,pos
positive bending moment at rail seat from dynamic rail seat load P
k
3.1.19
characteristic negative bending moment for rail seat section
M
k,r,neg
negative bending moment at rail seat from dynamic rail seat load P
k
3.1.20
characteristic negative bending moment for centre section
M
k,c,neg
negative bending moment at centre section from dynamic rail seat load P
k
3.1.21
characteristic positive bending moment for centre section
M
k,c,pos
positive bending moment at centre section from dynamic rail seat load P
k
3.1.22
thermal deformability
deformation of geometric properties as a result of thermal influences
3.1.23
bedding modulus
pressure (force per surface area) per unit deflection and measured under a uniaxial load
3.1.24
ballastless track
high fixity track constrained by means other than ballast
3.1.25
fastening system
any device used to secure running rails into chairs or baseplates or directly to sleepers, bearers or other
rail supports
3.1.26
gauge
lateral distance between the running edges of rails in track
3.1.27
lateral track resistance
ability of a sleeper to resist movement, perpendicular to rail, under lateral loading
3.1.28
conductor rail
rigid metallic section or rail mounted on insulators as a means of distributing electrical energy to trains
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3.1.29
geometric ballast plate
GBP
rigid steel plate with geometrically structured surface simulating ballast contact
Note 1 to entry: see Annex A of EN 16730.
3.1.30
flat plate
FP
rigid steel plate with flat surface with dimension 300 mm by 300 mm
3.2 Symbols
For the purpose of this document, the symbols listed in Table 1 apply.
Table 1 — Symbols
Symbol Description Unit
−2 3
C static bedding modulus with GBP between 0,01 and 0,1 N.mm N/mm
stat
−2 3
C static bedding modulus with GBP between 0,01 and 0,2 N · mm N/mm
tend
low frequency dynamic bedding modulus with GBP at 5Hz between 0,01 and 0,1 N
3
Cdyn N/mm
−2
· mm
d Deformation of the sleeper in the strength test under F mm
0s r0
d Deformation of the sleeper in the strength test under k × F mm
1s 1s r0
d Deformation of the sleeper in the strength test under k × F mm
2s 2s r0
Upper limit for the sleeper deformation in the strength test at exceptional load
d mm
1s,lim
level
d Upper limit for the sleeper deformation in the strength test at accidental load level mm
2s,lim
Fc Positive test load at the centre section of the sleeper kN
Fc
Positive reference test load at the centre section of the sleeper kN
0
Fc
Negative reference test load at the centre section of the sleeper kN
0n
Fc
Negative fatigue test load at the centre section of the sleeper kN
fat,n
Fc
Negative test load at the centre section of the sleeper kN
n
Fc
Negative permanent deformation test load at the centre section of the sleeper kN
perm,n
Fr Positive test load for the rail seat section kN
Fr
Positive reference test load for the rail seat section kN
0
Fr Maximum positive test load at the rail seat section which cannot be increased kN
B
Fr Positive fatigue test load for the rail seat section kN
fat
Coefficient used for calculation of static test load for the exceptional load level.
k
1s
This factor is applied to initial reference test load.
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Symbol Description Unit
Coefficient used for calculation of static test load for the accidental load level. This
k
2s
factor is applied to initial reference test load.
k Coefficient to be used for calculation of Fr at the end of the fatigue test.
3 B
Dynamic low frequency stiffness at the centre section in between the loads (0,1 ·
k
MN/m
cn,dyn1
Fc ) and (0,5 · Fc )
0 0
Dynamic low frequency stiffness at the centre section in between the loads (0,1 ·
k
MN/m
cn,dyn2
Fc ) and Fc
0 0
k Static stiffness at the centre section in between the loads (0,1 · Fc ) and (0,5 · Fc )
MN/m
cn,stat1 0 0
k Static stiffness at the centre section in between the loads (0,1 · Fc ) and Fc
MN/m
cn,stat2 0 0
Dynamic low frequency stiffness at the rail seat section in between the loads (0,1
k
MN/m
r,dyn1
·Fr ) and (0,5 ·Fr )
0 0
Dynamic low frequency stiffness at the rail seat section in between the loads (0,1
k
MN/m
r,dyn2
·Fr ) and Fr
0 0
k Static stiffness at the rail seat section in between the loads (0,1 ·Fr ) and (0,5 ·Fr )
MN/m
r,stat1 0 0
k Static stiffness at the rail seat section in between the loads (0,1 ·Fr ) and Fr
MN/m
r,stat2 0 0
k Coefficient used for the degradation during service life of the sleeper.
t
−2
k static stiffness with GBP between 0,01 and 0,1 N ·mm MN/m
stat
−2
k static stiffness with GBP between 0,01 and 0,2 N ·mm MN/m
tend
−2
k low frequency dynamic stiffness with GBP at 5Hz between 0,01 and 0,1 N · mm MN/m
dyn
L Length of the sleeper m
L
Design distance between centre lines of the rail seat m
c
Design distance between the centre line of the rail seat to the edge of the sleeper at
L
m
p
the bottom
Design distance between the articulated supports centre lines for the test
L
m
r
arrangement at the rail seat section
M Bending moment from dynamic rail seat load P kNm
k
k
Negative characteristic bending moment at centre section,
M kNm
k,c,neg
(see Annex B)
Positive characteristic bending moment at centre section,
M kNm
k,c,pos
(see Annex B)
Negative characteristic bending moment at rail seat,
M kNm
k,r,neg
(see Annex B)
Positive characteristic bending moment at rail seat,
M kNm
k,r,pos
(see Annex B)
Deformation for permanent deformation test of screw/insert in function of
Δe mm
temperature
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Symbol Description Unit
−1
α Linear thermal expansion coefficient for the bottom K
T,bottom
−1
α Linear thermal expansion coefficient for the top K
T,top
4 General Characteristics
4.1 General
The track is an assembly of transverse sleepers or bearers secured to the rails by means
...