1、January 2012 Translation by DIN-Sprachendienst.English price group 12No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC
2、S 93.100!$y(-“1860510www.din.deDDIN EN 13232-2Railway applications Track Switches and crossings Part 2: Requirements for geometric design(includes Amendment A1:2011)English translation of DIN EN 13232-2:2012-01Bahnanwendungen Oberbau Weichen und Kreuzungen Teil 2: Anforderungen an den geometrischen
3、Entwurf Englische bersetzung von DIN EN 13232-2:2012-01Applications ferroviaires Voie Appareils de voie Partie 2: Exigences de la conception gomtrique Traduction anglaise de DIN EN 13232-2:2012-01SupersedesDIN EN 13232-2:2004-01www.beuth.deIn case of doubt, the German-language original shall be cons
4、idered authoritative.Document comprises 23 pages12.11(enthlt nderung A1:2011)(Amendement A1:2011 inclus)DIN EN 13232-2:2012-01 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 256 “Railway applications” (Secretariat: DIN, German
5、y). The responsible German body involved in its preparation was the Normenausschuss Fahrweg und Schie-nenfahrzeuge (Railway Standards Committee), Working Committee NA 087-00-01-05 UA Weichen und Kreuzungen. Amendments This standard differs from DIN EN 13232-2:2004-01 as follows: a) the German title
6、has been adapted; b) Annex ZA (informative) “Relationship between this European Standard and the Essential Requirements of EU Directive 2008/57/EC” has been included. Previous editions DIN EN 13232-2: 2004-01 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13232-2:2003+A1 October 2011 ICS 93.10
7、0 Supersedes EN 13232-2:2003English Version Railway applications - Track - Switches and crossings - Part 2: Requirements for geometric design Applications ferroviaires - Voie - Appareils de voie - Bahnanwendungen - Oberbau - Weichen und Kreuzungen -Teil 2: Anforderungen an den geometrischen Entwurf
8、This European Standard was approved by CEN on 7 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 wit
9、hout 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
10、 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, D
11、enmark, 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. Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN
12、All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13232-2:2003+A1:2011: EEUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNGPartie 2: Exigences de la conception gomtrique EN 13232-2:2003+A
13、1:2011 (E) 2 Contents page Foreword 31 Scope 52 Normative references 53 Principles of geometry and running dynamics 53.1 Introduction 53.2 General requirements 63.3 Speed relationships . 93.4 Effects of changes in curvature . 103.5 Switches and crossings on curves 154 Non-geometric aspects of design
14、 165 Tolerances 165.1 Accumulation of tolerances 165.2 Acceptance basis. 17Annex ZA (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 2008/57/EC“ . 18Bibliography 21DIN EN 13232-2:2012-01 EN 13232-2:2003+A1:2011 (E) 3 Foreword This document (EN
15、 13232-2:2003+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 20
16、12, 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 re
17、lationship 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 13232-2:2003. The start and finish of text introduced or altered by amendment is indicated in
18、 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 S
19、witches 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 : S
20、witches 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
21、. 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
22、 Standard as the technical basis for a transaction: Customer The Operator or User of the equipment, or the Purchaser of the equipment on the Users behalf. DIN EN 13232-2:2012-01 EN 13232-2:2003+A1:2011 (E) 4 Supplier The body responsible for the use of the European Standard in response to the Custom
23、ers 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
24、, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. DIN EN 13232-2:2012-01 EN 13232-2:2003+A1:2011 (E) 5 1 Scope This part of this European Standard covers the following su
25、bjects: geometric design principles for wheel guidance; definition of basic limits of supply; applied forces and their adequate support; tolerance levels. These are illustrated herein by application to a turnout. The main switch and crossing components are represented in turnouts and the principles
26、used in turnouts apply equally to more complex layouts. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text, and the publications are listed hereafter.
27、 For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 13232-1:2003, R
28、ailway applications Track Switches and crossings Part 1: Definitions. prEN 13232-3, Railway applications Track Switches and crossings Part 3: Requirements for wheel/rail interaction. prEN 13232-5, Railway applications Track Switches and crossings Part 5: Switches. prEN 13232-9, Railway applications
29、Track Switches and crossings - Part 9: Layouts. 3 Principles of geometry and running dynamics 3.1 Introduction Geometry is represented in the running plane by the running edges. For the purpose of determination of permissible speeds and for definition of the turnout, curvature is defined by the radi
30、us of the track centreline. The guiding principles of curves are given in this standard as they apply to switches and crossings. Switches and crossings are normally designed without differential cant; particular requirements shall be specified. In order to maintain safe and continuous support and gu
31、idance of wheels, certain rules of tangency are imposed. Speed and radius are then related to lateral acceleration. Cant deficiency is derived from this. Switches and crossings are characterised by changes in lateral acceleration, so rules for both steady and sudden changes between radii are include
32、d in this section. Calculations and rules relate to vehicles with 2 axles or vehicles with 2-axle bogies. Vehicles with other than 2 axles may require special consideration and as such their configuration shall be provided by the Customer. These rules are defined for steady-state design, i.e. withou
33、t acceleration. Requirements of a dynamic nature shall be stated by the Customer. DIN EN 13232-2:2012-01 EN 13232-2:2003+A1:2011 (E) 6 3.2 General requirements 3.2.1 References, terms and definitions For the purposes of this part of the European Standard, the terms and definitions given in EN 13232-
34、1:2003 and the following apply. Key reference points relating to turnout geometry and the limits of supply of a turnout are illustrated in Figure 1. Key 1 Actual switch toe 6 Limits of supply (front joints) 2 Mathematical point of switch 7 Origin of switch curve 3 Tumout intersection 8 Centreline ra
35、dius 4 Theoretical intersection 9 Turnout angle 5 Limits of supply (heel joints) Figure 1 Key reference points 3.2.2 General tangency rules At any change in radius the two radii shall be mutually tangential at the running edges. To achieve this the centres of adjacent curves shall lie on the same ra
36、dial line (see Figure 2). Exceptions to the mutual tangency rule may occur. These are: along the low-side curve of a turnout where gauge variation occurs; at the switch toe, for example, to shorten the switch rail. Details are given in prEN 13232-3 and prEN 13232-5. DIN EN 13232-2:2012-01 EN 13232-2
37、:2003+A1:2011 (E) 7 Key 1 Tangent Figure 2 Mutual tangency 3.2.3 Key determinants For a concise definition of the geometry of an assembly of switches and crossings, a minimum amount of basic quantitative information is required. The following items are both necessary and sufficient for such a defini
38、tion of a turnout. The following shall be defined by the Customer and numerical values provided to the Supplier. Note that some values may be different from those for plain line : gauge; speed; maximum lateral acceleration or cant deficiency; maximum rate of change of lateral acceleration or cant de
39、ficiency; turnout intersection point and angle (see Figure 3); limits of supply (front joints, heel joints); lowside gauge variation (if any). For a crossover or junction, in addition, the following shall be defined by the Customer and provided to the Supplier: distance between main line track centr
40、elines. For switches and crossings on a curved main line, the following must be defined and provided by the Customer: main line curvature; main line and branch line cant through turnout. The key points whose location shall be agreed between Customer and Supplier are as follows: DIN EN 13232-2:2012-0
41、1 EN 13232-2:2003+A1:2011 (E) 8 origin of switch curve; real switch toe (RP); theoretical intersection (of crossing). Key 1 Overall length 2 Tangent length 3 Turnout intersection 4 Turnout angle Figure 3 Setting out diagram Radii of main and branch lines and the positions at which they change shall
42、be agreed, for example as illustrated in Figure 4a) for circular geometry and 4b for transitional geometry, together with: centreline radii; origin of switch curve to positions of changes of radii; tangent offset (if any); where such changes of radii shall be bounded either by included angle, or by
43、longitudinal distance or by lateral offset, or in the case of a transition section, by such data as is necessary to uniquely define its shape. DIN EN 13232-2:2012-01 EN 13232-2:2003+A1:2011 (E) 9 Figure 4a) Circular Figure 4b) TransitionalKey 1 Centreline 2 Transition Figure 4 Key dimensions related
44、 to radius 3.3 Speed relationships Fundamental rules of circular motion determine the relationship between radius and speed around a curve. For railway specific applications the following formula applies: vmax= (amax Rc) (1) where Rcis the local centreline radius of the curve in metre; amaxis the ma
45、ximum lateral acceleration in m/s2; vmaxis the maximum local velocity in m/s. Alternatively with Vmaxin km/h: Vmax= 3,6 (amaxRc) (2) Often it is convenient to express maximum speed in terms of more physical measures, using the variables cant deficiency and wheel contact gauge. Firstly, wheel contact
46、 gauge is expressed conventionally as: sw= st+ sr(3) where swis the wheel contact gauge, or distance between the two upper wheel/rail contacts, in millimetre; stis the track gauge in millimetre; DIN EN 13232-2:2012-01 EN 13232-2:2003+A1:2011 (E) 10 sris the rail head width in millimetre. If sris not
47、 specified then, for standard gauge (1 435 mm), swtakes the value 1 500 mm. The speed relationship is then given by: Vmax= 3,6 (hd g Rc/ sw) (4) where hdis the maximum permitted cant deficiency in millimetre; g is the acceleration due to gravity, normally taken as 9,81 m/s2. 3.4 Effects of changes i
48、n curvature 3.4.1 Introduction Most real situations yield a step change in curvature, since a smooth curvature change only occurs in transition curves. The effects of step changes are mitigated by the vehicles suspension system, but an approximate rule is necessary to enable the switch and crossing
49、supplier to match the vehicles requirements. In the following the rules for steady transitions are covered first, then the rules for step changes in curvature. See Figure 5 for examples of alternative arrangements of transitions within turnouts. DIN EN 13232-2:2012-01 EN 13232-2:2003+A1:2011 (E) 11 Key 1 Radius 2 Transition 3 Straight 4 Radius 1 5 Radius 2 Figure 5 Examples of geometry types 3.4.2 Cha
