Railway applications - Track - Switches and crossings - Part 3: Requirements for wheel/rail interaction

This part of this European Standard specifies:
-   characterisation of wheel and track dimensions;
-   geometric design principles for wheel guidance;
-   design principles for wheel load transfer;
-   deciding whether movable crossings are needed.
These are illustrated by their application to turnout components:
-   switches;
-   crossings;
-   check rails.
but the principles apply equally to more complex layouts.

Bahnanwendungen - Oberbau - Weichen und Kreuzungen - Anforderungen an das Zusammenspiel Rad/Schiene

Diese Europäische Norm umfasst folgende Bereiche:
-   Beschreibung der Rad- und Gleismaße;
-   geometrische Entwurfsgrundsätze für die Radführung;
-   Entwurfsrichtlinien für die Radlastübertragung;
-   Entscheidung darüber, ob Herzstücke mit beweglichen Bauteilen erforderlich sind.
Diese werden in ihrer Anwendung auf die Weichenbauteile
-   Zungenvorrichtungen;
-   Herzstücke;
-   Radlenker
dargestellt, jedoch sind die Grundsätze auch auf umfangreichere Gleisanlagen anwendbar.

Applications ferroviaires - Voie - Appareils de voie - Partie 3: Exigences pour l'interaction Roue/Rail

Cette partie de l’EN13232 traite des sujets suivants :
-   caractérisation des dimensions des roues et des voies ;
-   principe de conception géométrique pour le guidage des roues ;
-   principes de conception pour le transfert de charge des roues ;
-   décision sur la nécessité d’utiliser des coeurs à parties mobiles.
Les sujets sont illustrés par l'application aux composants du branchement :
-   aiguillages ;
-   coeurs ;
-   contre-rails.
mais les principes s'appliquent également aux appareils de voie plus complexes.

Železniške naprave - Zgornji ustroj - Kretnice in križišča - 3. del: Zahteve na stiku kolo-tirnica

Ta del tega evropskega standarda določa:
- karakterizacijo mer koles in zgornjega ustroja;
- geometrijska načela pri projektiranju za vodenje koles;
- načela projektiranja za prenos obremenitve koles;
- odločanje o potrebi po premičnih križiščih.
Zgornje tematike so prikazane z uporabo na sestavnih delih izogibalnega tira:
- kretnice;
- križišča;
- vodilne tirnice,
vendar načela enako veljajo za kompleksnejše kretniške sklope.

General Information

Status
Published
Publication Date
22-Nov-2011
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
17-Nov-2011
Due Date
22-Jan-2012
Completion Date
23-Nov-2011

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.NRORWLUQLFDBahnanwendungen - Oberbau - Weichen und Kreuzungen - Anforderungen an das Zusammenspiel Rad/SchieneApplications ferroviaires - Voie - Appareils de voie - Partie 3: Exigences pour l'interaction Roue/RailRailway applications - Track - Switches and crossings - Part 3: Requirements for wheel/rail interaction45.080Rails and railway componentsICS:Ta slovenski standard je istoveten z:EN 13232-3:2003+A1:2011SIST EN 13232-3:2004+A1:2012en,fr,de01-januar-2012SIST EN 13232-3:2004+A1:2012SLOVENSKI

STANDARD
SIST EN 13232-3:2004+A1:2012
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 13232-3:2003+A1
October 2011 ICS 93.100 Supersedes EN 13232-3:2003English Version

Railway applications - Track - Switches and crossings - Part 3: Requirements for wheel/rail interaction

Applications ferroviaires - Voie - Appareils de voie - Partie 3: Exigences pour l'interaction Roue/Rail

Bahnanwendungen - Oberbau - Weichen und Kreuzungen -Anforderungen an das Zusammenspiel Rad/Schiene This European Standard was approved by CEN on 13 February 2003 and includes Amendment 1 approved by CEN on 13 September 2011.

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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,

B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13232-3:2003+A1:2011: ESIST EN 13232-3:2004+A1:2012

EN 13232-3:2003+A1:2011 (E) 2 Contents page Foreword ...................................................................................................................................................................... 31Scope .............................................................................................................................................................. 52Normative references .................................................................................................................................... 53Presentation ................................................................................................................................................... 53.1General ............................................................................................................................................................ 53.2Wheel and track dimensions ........................................................................................................................ 53.3Wheel profiles ................................................................................................................................................ 53.4Wheelsets ....................................................................................................................................................... 63.5Rail and track ................................................................................................................................................. 63.6Tolerances and wear ..................................................................................................................................... 73.7Contact zone .................................................................................................................................................. 83.7.1Contact profile ................................................................................................................................................ 83.7.2Contact danger zone ..................................................................................................................................... 83.7.3Flangeway depth ............................................................................................................................................ 84Guidance principles ...................................................................................................................................... 84.1Guard and check Rails .................................................................................................................................. 94.2Wheelset guidance ........................................................................................................................................ 94.2.1Angle of attack ............................................................................................................................................. 104.2.2Flangeway ..................................................................................................................................................... 104.2.3Gauge widening ........................................................................................................................................... 114.2.4Check rail and common crossing nose ..................................................................................................... 114.2.5Obtuse Crossings ........................................................................................................................................ 114.3Transitional guidance .................................................................................................................................. 134.4Entry flares ................................................................................................................................................... 135Wheel load transfer...................................................................................................................................... 135.1Sufficiency of bearing area ......................................................................................................................... 145.2Transfer surfaces ......................................................................................................................................... 165.3Method of assessment ................................................................................................................................ 166Insufficient wheel support or guidance ..................................................................................................... 166.1Common crossings ..................................................................................................................................... 166.2Obtuse crossings......................................................................................................................................... 166.3Movable crossings....................................................................................................................................... 16Annex ZA (informative)

!Relationship between this European Standard and the Essential Requirements of EU Directive 2008/57/EC" ........................................................................................... 17Bibliography .............................................................................................................................................................. 20

SIST EN 13232-3:2004+A1:2012

EN 13232-3:2003+A1:2011 (E) 3 Foreword This document (EN 13232-3:2003+A1:2011) 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 April 2012, and conflicting national standards shall be withdrawn at the latest by April 2012. !This document has been prepared under a mandate given to CEN/CENELEC/ETSI by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive 2008/57/EC. For relationship with EU Directive 2008/57/EC, see informative Annex ZA, which is an integral part of this document." This document includes Amendment 1, approved by CEN on 2011-09-13. This document supersedes EN 13232-3:2003. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ". Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This series of European Standards “Railway Applications – Track – Switches and Crossings” covers the design and quality of switches and crossings in flat bottomed rail. The list of parts is as follows:  Part 1 : Definitions  Part 2 : Requirements for geometric design  Part 3 : Requirements for wheel/rail interaction  Part 4 : Actuation, locking and detection  Part 5 : Switches  Part 6 : Fixed common and obtuse crossings  Part 7 : Crossings with movable parts  Part 8 : Expansion devices  Part 9 : Layouts Part 1 contains terminology used throughout all parts of this series. Parts 2 to 4 contain basic design guides and are applicable to all switch and crossing assemblies. Parts 5 to 8 deal with particular types of equipment, including their tolerances. Part 9 defines the functional and geometric dimensions and tolerances for layout assemblies. These use Parts 1 to 4 as a basis. The following terms are used within to define the parties involved in using the European Standard as the technical basis for a transaction:  Customer the Operator or User of the equipment, or the Purchaser of the equipment on the User's behalf; SIST EN 13232-3:2004+A1:2012

EN 13232-3:2003+A1:2011 (E) 4  Supplier the body responsible for the use of the European Standard in response to the Customer's requirements. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. SIST EN 13232-3:2004+A1:2012

EN 13232-3:2003+A1:2011 (E) 5 1 Scope This part of this European Standard specifies:  characterisation of wheel and track dimensions;  geometric design principles for wheel guidance;  design principles for wheel load transfer;  deciding whether movable crossings are needed. These are illustrated by their application to turnout components:  switches;  crossings;  check rails. but the principles apply equally to more complex layouts. 2 Normative references Not applicable. 3 Presentation 3.1 General The motion of wheels and transfer of wheel loads is a complex subject, involving the accumulation of extensive data and an understanding of dynamic effects. By making certain assumptions it is feasible to define rules which are simple yet rigorous enough for design of all types of switches and crossings. Some of these rules assume a 2-axle bogie or vehicle. The need for other special requirements such as those posed by 3-axle or other vehicles must be stated by the Customer. 3.2 Wheel and track dimensions This clause deals with the key dimensions needed for the analysis of the interaction between wheels and the track, either for guidance calculations or load transfer calculations. Wheel and track dimensions are defined below. 3.3 Wheel profiles Sufficient dimensions of the cross-section or profile of a wheel are required for switch and crossing design. As a minimum, a dimensioned profile drawing shall be provided by the customer, with the following key dimensions as defined in Figure 1:  flange width, height and flange angle;  tyre width and tread angle;  wheel diameter or radius. SIST EN 13232-3:2004+A1:2012

EN 13232-3:2003+A1:2011 (E) 6

Key 1 Tyre width 6 Danger zone 2 Flange angle 7 Contact point 3 Flange width 8 Wheel diameter 4 Wheel back to back 9 Tread angle 5 Flange depth Figure 1 — Key wheel dimensions (in addition to profile details) 3.4 Wheelsets Additional parameters related to the wheelsets are required for calculations for wheelset guidance. The Customer shall provide the following parameter values:  wheel back-to-back (see Figure 1);  axle spacing;  number of axles;  clearance of middle axles, if applicable;  bogie spacing and minimum curve radius for vehicles. 3.5 Rail and track The key parameters related to the track geometry which are used in calculations for wheelset guidance are shown in Figure 2 and listed below:  centreline radius (R);  track gauge (G);  dimension for nose protection (check gauge) (F);  wing flangeway (D). SIST EN 13232-3:2004+A1:2012

EN 13232-3:2003+A1:2011 (E) 7

Key 1 Highside 2 Wing 3 Check 4 Lowside Figure 2 — Key track dimensions and the following shall be provided by the Customer:  maximum permissible check rail height above running table (H). 3.6 Tolerances and wear It is necessary to consider tolerances and wear in order to design correctly. These are alternatively referred to as manufacturing tolerances and service tolerances. If the Customer provides worn wheel profiles or amounts of wear, then these should be used. Otherwise the assumptions made by the Supplier shall form the basis for design, and these shall be stated. Examples of key areas of wear are:  back of wheel flanges;  front of wheel flanges;  false flanges;  flange angle. Locations of typical lateral wheel and track wear are shown in Figure 3. These must be taken into account when designing flangeway gaps. See clause 4. SIST EN 13232-3:2004+A1:2012

EN 13232-3:2003+A1:2011 (E) 8

Key 1 False flange 4 Wing wear 2 Guard or check rail wear 5 Wheel wear (front) 3 Wheel wear (back) 6 Vee wear Figure 3 — Locations of wheel and rail wear Vertical wear, examples of which are also illustrated in Figure 3, is more relevant to wheel load transfer. See clause 5. False flanges are to be avoided as they will increase wear as well as the rate of damage to switches and crossings. 3.7 Contact zone For switch and crossing design, there are issues which shall be verified during design. These are as follows. 3.7.1 Contact profile The relative radii of wheel and rail shall be taken into account. 3.7.2 Contact danger zone The wheel profile supplied by the Customer shall indicate the danger zone for guidance contact, which is that part

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