prEN 17682

Railway applications - Infrastructure - Resilient element for floating slab system

This European Standard is applicable to Resilient Element for Floating Slab system (REFS) – Elements used in floating slab and defines the test procedures and their acceptance criteria.
The standard covers not only those parameters related to the effectiveness of a track structure in mitigating vibrations, that is, to reduce the emission of vibrations and structure-borne noise, but also the parameters that are needed for the static analysis and for the verification of track safety.
Floating slab track systems in the form of track base plates and track troughs are individual solutions in which there is considerable variation in the engineering design and the types of resilient elements used. For this reason, a floating slab track system is always an individual engineering solution and therefore, it is not possible to define all specific conditions for the resilient elements in the present standard
The most typical types of resilient elements are:
- Full surface bearings,
- Strip bearings,
- Discrete bearings (including the helical steel spring element),
- Vertical bearings.
This standard provides particular information in the following areas:
- tests methods, tests arrangements and evaluation criteria of Resilient Element for Floating Slab system,
- data supplied by the purchaser and by the supplier,
- definition of general process of homologation,
- definition of routine tests.
This standard defines the specific test procedures for REFS:
- stiffness tests,
- fatigue tests,
- severe environmental condition test.
This standard also sets out procedures for testing fitness for purpose and provides information on quality monitoring as part of quality assurance procedures. This standard does not, however, contain requirements pertaining to the functions of Resilient Element for Floating Slab system. It is the responsibility of the purchaser to define these requirements and to choose the optional tests.
This standard is not applicable for fastening system and for booted concrete block and sleeper completed with boots covered by EN 13481-5.

Bahnanwendungen - Infrastruktur - Elastisches Element für Unterbodenmattensystem

Applications ferroviaires - Infrastructure - Élément élastique pour système de dalle flottante (REFS)

Le présent document s'applique à l'élément élastique pour système de dalle flottante (REFS) et définit les modes opératoires d'essai ainsi que les critères d'acceptation associés.
Le présent document traite non seulement des paramètres liés à l'aptitude des voies à atténuer les vibrations, c'est-à-dire réduire les émissions de vibrations et de bruit solidien, mais également des paramètres nécessaires à l'analyse statique et à la vérification de la sécurité des voies.
Les systèmes de voie sur dalle flottante constitués de selles et de dalles pleines sont des solutions individuelles, qui varient considérablement sur le plan de la conception technique et des types d'éléments élastiques utilisés. C'est la raison pour laquelle un système de voie sur dalle flottante constitue toujours une solution technique individuelle et, par conséquent, il n'est pas possible de définir dans le présent document l'ensemble des conditions spécifiques aux éléments élastiques.
Les types d'éléments élastiques les plus couramment utilisés sont les suivants :
- supports intégraux ;
- supports par bandes ;
- supports discrets (y compris l'élément ressort hélicoïdal en acier) ;
- supports verticaux.
Ce document donne des informations particulières dans les domaines suivants :
- méthodes d'essai, montages d'essai et critères d'évaluation de l'élément élastique pour système de dalle flottante ;
- données fournies par l'acheteur et par le fournisseur ;
- définition d'un processus d'homologation général ;
- définition des essais de série.
Le présent document définit les modes opératoires d'essai spécifiques au REFS :
- essais de raideur ;
- essais de fatigue ;
- essai en conditions environnantes rigoureuses.
Le présent document établit également des modes opératoires pour les essais d'aptitude à l'emploi et fournit des informations sur la gestion de la qualité dans le cadre des procédures d'assurance qualité. Cependant, le présent document ne contient pas les exigences relatives aux fonctions de l'élément élastique pour système de dalle flottante. La définition de ces exigences et le choix des essais facultatifs relèvent de la responsabilité de l'acheteur.
Le présent document n'est pas applicable aux systèmes de fixation ni aux traverses et supports en béton avec chaussons, qui sont spécifiés dans l'EN 13481 5.

Železniške naprave - Infrastruktura - Elastični element za sistem plavajočih plošč

General Information

• Status: Not Published
• ICS: 93.100 - Construction of railways
• Technical Committee: CEN/TC 256 - Railway applications
• Drafting Committee: CEN/TC 256/SC 1/WG 16 - Sleepers and bearers
• Current Stage: 4599 - Dispatch of FV draft to CMC - Finalization for Vote
• Due Date: 12-May-2022
• Completion Date: 12-May-2022
• 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: oSIST prEN 17682:2021 - Railway applications - Infrastructure - Resilient element for floating slab system

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN 17682:2021
01-september-2021

Železniške naprave - Infrastruktura - Elastični element za sistem plavajočih plošč

Railway applications - Infrastructure - Resilient element for floating slab system

Bahnanwendungen - Infrastruktur - Elastisches Element für Unterbodenmattensystem

Applications ferroviaires - Infrastructure - Elément élastique pour système de dalles

flottantes
Ta slovenski standard je istoveten z: prEN 17682
ICS:
93.100 Gradnja železnic Construction of railways
oSIST prEN 17682:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 17682:2021
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oSIST prEN 17682:2021
DRAFT
EUROPEAN STANDARD
prEN 17682
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2021
ICS 93.100
English Version
Railway applications - Infrastructure - Resilient element
for floating slab system

Applications ferroviaires - Infrastructure - Elément Bahnanwendungen - Infrastruktur - Elastisches

élastique pour système de dalles flottantes Element für Unterbodenmattensystem

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 17682:2021 E

worldwide for CEN national Members.
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Contents Page

European foreword ....................................................................................................................................................... 5

Introduction .................................................................................................................................................................... 6

1 Scope .................................................................................................................................................................... 7

2 Normative references .................................................................................................................................... 8

3 Terms and definitions ................................................................................................................................... 8

4 Symbols and abbreviations ...................................................................................................................... 10

5 Loads applied to the REFS ......................................................................................................................... 12

6 Samples dimensions .................................................................................................................................... 13

7 Design approval tests and routine tests .............................................................................................. 13

7.1 General ............................................................................................................................................................. 13

7.2 Summary of design approval and routine tests ................................................................................ 13

7.3 Requirements for specification of REFS ............................................................................................... 14

7.3.1 Dimensions and mass ................................................................................................................................. 14

7.3.2 Static and dynamic vertical bedding modulus determined with Flat Plate (FP) .................. 15

7.3.3 Acoustic bedding modulus ........................................................................................................................ 15

7.3.4 Fatigue test ..................................................................................................................................................... 17

7.3.5 Static horizontal bedding modulus ........................................................................................................ 17

7.3.6 Water and climatic resistance of REFS ................................................................................................. 17

7.3.7 Ageing test with high temperatures ...................................................................................................... 18

8 Data to be supplied ...................................................................................................................................... 18

8.1 General ............................................................................................................................................................. 18

8.2 Data supplied by the purchaser (prior to the Project design approval tests) ....................... 18

8.3 Data supplied by the supplier (after the Project design approval tests and prior to

first start-up of production) ..................................................................................................................... 19

9 Rules for use of REFS ................................................................................................................................... 19

10 Quality control .............................................................................................................................................. 19

11 Marking, labelling and packaging .......................................................................................................... 20

Annex A (normative) Flat Plate (FP) .................................................................................................................. 21

A.1 Design of the FP ............................................................................................................................................. 21

Annex B (normative) Data sheet .......................................................................................................................... 22

Annex C (normative) Bedding modulus measurement of REFS determined with FP ....................... 23

C.1 Static test procedure ................................................................................................................................... 23

C.1.1 Principle .......................................................................................................................................................... 23

C.1.2 Apparatus ........................................................................................................................................................ 23

C.1.3 Procedure........................................................................................................................................................ 24

C.1.4 Test report ...................................................................................................................................................... 28

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C.2 dynamic test procedure ............................................................................................................................. 28

C.2.1 Principle ........................................................................................................................................................... 28

C.2.2 Apparatus ........................................................................................................................................................ 28

C.2.3 Procedure ........................................................................................................................................................ 28

C.2.4 Test report ...................................................................................................................................................... 30

Annex D (normative) Fatigue test ........................................................................................................................ 31

D.1 Principle ........................................................................................................................................................... 31

D.2 Apparatus ........................................................................................................................................................ 31

D.3 Procedure ........................................................................................................................................................ 31

D.4 Test report ...................................................................................................................................................... 32

Annex E (informative) Static horizontal bedding modulus of REFS ........................................................ 33

E.1 Principle ........................................................................................................................................................... 33

E.2 Apparatus ........................................................................................................................................................ 33

E.2.1 FP (flat plate) .................................................................................................................................................. 33

E.2.2 REFS test sample (see Clause 6) .............................................................................................................. 33

E.2.3 Abrasive cloth ................................................................................................................................................ 33

E.2.4 Actuator ............................................................................................................................................................ 33

E.2.5 Displacement measuring instruments. ................................................................................................. 33

E.2.6 Force measuring instruments. ................................................................................................................. 33

E.2.7 Recording equipment. ................................................................................................................................. 33

E.3 Procedure ........................................................................................................................................................ 34

E.4 Test report ...................................................................................................................................................... 35

Annex F (informative) Water and climatic resistance of REFS .................................................................. 37

F.1 Principle ........................................................................................................................................................... 37

F.2 Apparatus ........................................................................................................................................................ 37

F.2.1 Load platen...................................................................................................................................................... 37

F.2.2 REFS test sample ........................................................................................................................................... 37

F.2.3 Actuator ............................................................................................................................................................ 37

F.2.4 Water bath ....................................................................................................................................................... 37

F.2.5 Climatic chamber. ......................................................................................................................................... 37

F.3 Procedure ........................................................................................................................................................ 37

F.4 Test report ...................................................................................................................................................... 39

Annex G (informative) Ageing test with high temperatures of REFS ...................................................... 40

G.1 Principle ........................................................................................................................................................... 40

G.2 Apparatus ........................................................................................................................................................ 40

G.2.1 Climatic chamber. ......................................................................................................................................... 40

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G.2.2 REFS test sample ........................................................................................................................................... 40

G.3 Procedure........................................................................................................................................................ 40

G.4 Test report ...................................................................................................................................................... 41

Bibliography ................................................................................................................................................................. 42

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European foreword

This document (prEN 17682:2021) 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.
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Introduction

In a track for railway vehicles, the Resilient Element for Floating Slab (REFS) is a product which is placed

between the substructure and the ballastless track. This document applies to the performance-related

properties of these elements.
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1 Scope

This document is applicable to Resilient Element for Floating Slab system (REFS) – Elements used in

floating slab and defines the test procedures and their acceptance criteria.

The document covers not only those parameters related to the effectiveness of a track structure in

mitigating vibrations, that is, to reduce the emission of vibrations and structure-borne noise, but also the

parameters that are needed for the static analysis and for the verification of track safety.

Floating slab track systems in the form of track base plates and track troughs are individual solutions in

which there is considerable variation in the engineering design and the types of resilient elements used.

For this reason, a floating slab track system is always an individual engineering solution and therefore, it

is not possible to define all specific conditions for the resilient elements in the present document

The most typical types of resilient elements are:
— Full surface bearings,
— Strip bearings,
— Discrete bearings (including the helical steel spring element),
— Vertical bearings.
This document provides particular information in the following areas:

— tests methods, tests arrangements and evaluation criteria of Resilient Element for Floating Slab

system,
— data supplied by the purchaser and by the supplier,
— definition of general process of homologation,
— definition of routine tests.
This document defines the specific test procedures for REFS:
— stiffness tests,
— fatigue tests,
— severe environmental condition test.

This document also sets out procedures for testing fitness for purpose and provides information on

quality monitoring as part of quality assurance procedures. This document does not, however, contain

requirements pertaining to the functions of Resilient Element for Floating Slab system. It is the

responsibility of the purchaser to define these requirements and to choose the optional tests.

This document is not applicable for fastening system and for booted concrete block and sleeper

completed with boots covered by EN 13481-5.
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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 ISO 7500-1, 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)

EN ISO 9513:2012, Metallic materials - Calibration of extensometer systems used in uniaxial testing (ISO

9513:2012)
3 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
floating slab system

track system where a designed elasticity by resilient element is introduced between the ballastless track

system or trough slab and its substructure
3.2
Resilient Element for Floating Slab system (REFS)

product of resilient material installed in the floating slab system including all integral parts of the product

in order to mitigate vibrations
3.3
full surface bearing

resilient element arranged as a mat in between the floating slab and its substructure to provide

continuous elastic support of the floating slab
3.4
strip bearing

resilient element arranged as a strip in between the floating slab and its substructure to provide

continuous longitudinal elastic support of the floating slab. Continuous means any longitudinal gap

between 2 strips is less than 10% of one strip length, and not larger than strip width. Exceptions only

because of the construction requirement: i.e. Drainage
3.5
discrete bearing

resilient element arranged as a point support in between floating slab and its substructure to provide

discontinuous elastic support of the floating slab (including helical steel spring element), with designed

spacing between them over 10% of their length

Note 1 to entry: helical steel spring element, consisting of a helical steel spring according to EN 13906-1 and a

viscous or a solid damping system assembled in one device.
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3.6
vertical bearing

vertical resilient element for floating slab system in order to constrain the horizontal movements

3.7
stiffness
force per unit deflection, measured under a uniaxial force
3.8
bedding modulus

compressive stress (force per unit area) per unit deflection, measured under a uniaxial force

3.9
static stiffness or static bedding modulus
force or stress per unit deflection measured under a uniaxial static load
3.10
dynamic stiffness or dynamic bedding modulus

force or stress per unit deflection measured under a uniaxial force which acts periodically at a given

frequency of (5 – 20) Hz around between specific force or stress levels

Note 1 to entry: This value is determined mainly for calculation of dynamic deformation of tracks.

3.11
acoustic stiffness

dynamic stiffness of an elastic track support component that is measured under a static preload and at

small amplitudes of displacement or velocity applied in the frequency range relevant to noise or vibration

perception
3.12
mitigation of ground-borne noise and vibration

reduction of mechanical vibration and/or ground-borne noise into the surroundings

Note 1 to entry: REFS has no direct influence on noise-mitigation only in some indirect cases e.g. mitigate the

reradiated sound from bridge-structures.”
3.13
general design approval tests

tests performed to demonstrate the compliance of the product properties with the requirements, for

standard dimensions
3.14
project design approval tests

tests performed to demonstrate the compliance of the product properties with the requirements for a

specific project, set by the purchaser
3.15
routine tests

tests performed to demonstrate the compliance of the product properties to the quality plan, set by the

supplier
3.16
purchaser

operator or user of the equipment, or the customer of the material on the user’s behalf

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3.17
supplier
company /body responsible for the execution of purchaser’s requirements

Note 1 to entry: This can be the manufacturer or his designated representative, stockist, distributer, or agent. The

supplier is responsible for the use of the EN in response to the purchaser’s requirements and will ensure all local

conditions of purchase requirements are satisfied.
3.18
manufacturer

organization responsible for blending and processing material constituents, integrating them in the

manufacturing process and subsequently cutting, stamping or moulding to final dimensions

4 Symbols and abbreviations
Table 1 — Symbols
Symbols Characterization Units
A area mm
C bedding modulus N/mm
d displacement mm
Δ variation -
F force kN
f frequency Hz
k stiffness N/mm
m mass kg
η loss factor -
stiffening ratio between dynamic bedding modulus and static bedding
κ -
modulus
σ stress (compressive or tensile) N/mm
Φ dynamic coefficient -
R roughness mm
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Table 2 — Indices of the symbols
Indices Characterization
0 minimum load
i Hz value of frequency in measurement
af after
be before
dyn dynamic
A acoustic (bedding modulus)
h horizontal
max maximum
min minimum
i sequential number in order to differentiate types of measurements
stat static
tend tendency
test test load
v vertical
a arithmetic mean value
c cycles
M million
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5 Loads applied to the REFS

As a floating slab track system is always an individual engineering solution for a particular application, it

is not possible to specify generally applicable load ranges for the resilient elements.

The purchaser shall define the different loads (force or pressure) acting on one resilient element of the

REFS:

F or σ (minimum load): Dead load of the slab including rails, rail fastenings, without

0 0
safety factor.
F or σ (service load): Minimum load (F or σ ) plus the product of the dynamic
1 1 0 0
coefficient (vibration coefficient) Φ and the applicable
vertical live load (F or σ ) on curved or straight track.
PV PV

F or σ (evaluation load for slab Minimum load (F or σ ) plus the product of the dynamic

2 2 0 0
design): coefficient Φ and the applicable vertical live load (F or
PVB
σ ) exerted by the reference vehicle, or plus the product of
PVB
the dynamic coefficient Φ and the load model used for the
verification of slab safety

F or σ (maximum load for slab 1,35 σ plus 1,5 times the product of the dynamic coefficient

3 3 0
design): Φ and the applicable vertical live load (F or σ ) exerted
PVB PVB
by the reference vehicle, or plus 1,45 times the product of
the dynamic coefficient Φ and the load model used for the
verification of track safety
F or σ (minimum load): Horizontal load resulting from the gravitational force
h0 h0
component acting parallel to the lateral or longitudinal
inclination in the concrete base and from the superelevation
of the curve of the track slab support layer
F or σ (service load): Minimum load σ plus the horizontal live load σ
h1 h1 h0 PH
generated by the vehicles used for regular scheduled
services

F or σ (evaluation load): Minimum load σ h0 plus the horizontal live load σ of the

h2 h2 PHB
reference vehicle or the horizontal live load of the load
model used in the verification of track safety

F or σ (maximum load): 1,35 σh0 plus 1,5 times the horizontal live load σ of the

h3 h3 PHB
reference vehicle, or plus 1,45 times the horizontal live load
of the load model used in the verification of track safety

NOTE 1 The dynamic coefficient Φ incorporates the additional dynamic effects associated with the passage of

the vehicle. Currently, a dynamic coefficient of Φ = 1,3 is used for running speeds up to 200 km/h

NOTE 2 The applicable vertical live load PV is determined by the axle loads of the vehicles used for regular

scheduled services

NOTE 3 In the case of tramways, urban light rail systems and underground railways, the live load P of the

reference vehicle is assumed to be the most unfavourable loading scenario generated by the regular scheduled

services or by any special-purpose vehicles. For suburban rapid transit systems and main-line railways, the load

model LM 71 as defined in EN 1991-2 is generally assumed for verifications of track safety.

NOTE 4 The horizontal live load of a railway vehicle comprises the centrifugal forces, the transverse impact

(nosing force), and the braking and accelerating forces. The horizontal live load does not contain any surcharges

(loading factors), i.e. it does not contain a dynamic coefficient (vibration coefficient). The centrifugal force is

calculated for σ from the axle loads of the vehicle used for regular scheduled service while taking account of the

relevant track curve radius and track curve speed. Values assumed for σ and F are based on the reference vehicle

h2 h3
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or the load model applied in the verification of track safety rather than on the vehicle used for regular scheduled

service.

NOTE 5 The factor of 1,5 is the partial safety factor in EN 1990; the factor of 1,45 is the partial safety factor in

DIN-Fachbericht 101. The partial safety factor refers to the loads applied and not to the type of structural supporting

structure to be calculated.
6 Samples dimensions
Table 3 — Samples dimensions for general/project design approval tests
Bearings Dimensions
full surface
300x300mm with the thickness of the bearing defined by the supplier
bearings
300mm length x “width of the bearing (maximum 300mm)” and the thickness of the
strip bearings
bearing

discrete dimensions of the discrete bearing or helical steel spring elements (the whole element

bearings consisting of steel spring and viscous or solid damping system should be considered)

vertical dimensions in function of type (full surface, strip or discrete) of bearings used in the

bearings project

It is recommended for discrete bearings and vertical bearings to use samples dimensions for general

design approval tests: 300x300mm.

In the case of resilient elements with studs or other geometrically deformable structures, the dimensions

(close to 300x300mm and maximum 320x320mm) of the test object shall be modified accordingly.

7 Design approval tests and routine tests
7.1 General

This clause defines the test objectives and requested information about the REFS.

The purchaser should define the accepted laboratories.

In order to be able to identify REFS at a later date, the following values shall be indicated:

— the specific mass of the product and all its components, see 7.3.1;

— the results of a suitable material analysis as selected by the manufacturer and approved by the

purchaser.
The sup
...