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1、BRITISH STANDARD BS EN 13230-4:2002 Railway applications Track Concrete sleepers and bearers Part 4: Prestressed bearers for switches and crossings The European Standard EN 13230-4:2002 has the status of a British Standard ICS 45.080 ? Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:56:27
2、GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 13230-4:2002 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 18 December 2002 BSI 18 December
3、2002 ISBN 0 580 41006 4 National foreword This British Standard is the official English language version of EN 13230-4:2002. The UK participation in its preparation was entrusted to Technical Committee RAE/2, Railway track components, which has the responsibility to: A list of organizations represen
4、ted on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, o
5、r by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer im
6、munity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate th
7、em in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 18, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd
8、. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:56:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13230-4 December 2002 ICS 45.080 English version Railway applications - Track - Concrete sleepers and bearers - Part 4 :
9、Prestressed bearers for switches and crossings Applications ferroviaires - Voie - Traverses et supports en bton - Partie 4 : Supports prcontraints pour appareil de voie Bahnanwendungen - Oberbau - Gleis- und Weichenschwellen aus Beton - Teil 4 : Spannbetonschwellen fr Weichen und Kreuzungen This Eur
10、opean Standard was approved by CEN on 9 October 2002. 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 c
11、oncerning such national standards may be obtained on application to the 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 ow
12、n language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spai
13、n, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2002 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national M
14、embers. Ref. No. EN 13230-4:2002 E Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:56:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13230-4:2002 (E) 2 Contents Page Foreword.3 Introduction.4 1 Scope4 2 Normative references.4 3 Special requirements .4 3.1 Design bending moments4 3.2 Posi
15、tioning of fastening components.4 3.3 Tolerances5 3.3.1 Tolerance on flatness.5 3.3.2 Tolerances on fastening positioning.5 3.3.3 Vertical deviation6 3.4 Distance from the end of the bearer to the nearest cast-in component 6 4 Product testing.7 4.1 Symbols7 4.2 Test arrangements .8 4.3 Test procedur
16、es .8 4.3.1 Test loads.8 4.3.2 Static test8 4.3.3 Fatigue test.11 4.4 Acceptance criteria 13 4.4.1 Static test13 4.4.2 Fatigue test.13 4.5 Design approval tests .13 4.5.1 Bending moments evaluation13 4.5.2 Concrete .14 4.5.3 Product inspection.14 4.5.4 Fastening system and electrical insulation.14 4
17、.6 Routine tests 14 4.6.1 Positive or negative bending moment evaluations for the static test14 4.6.2 Concrete .14 4.6.3 Product checking.14 5 Manufacturing.14 5.1 Manufacturing rules.14 5.2 Position of prestressing steel15 5.3 Tolerance on the prestressing force .15 5.4 Additional marking.15 6 Data
18、 to be supplied 15 6.1 Data supplied by the purchaser.15 6.2 Data supplied by the supplier15 Annex A (normative) Detailed drawings of the test arrangements16 A.1 Articulated support 16 A.2 Resilient pad.17 Bibliography18 Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:56:27 GMT+00:00 2006,
19、 Uncontrolled Copy, (c) BSI EN 13230-4:2002 (E) 3 Foreword This document EN 13230-4:2002 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
20、 of an identical text or by endorsement, at the latest by June 2003, and conflicting national standards shall be withdrawn at the latest by June 2003. This European Standard is one of the series EN 13230 “Railway applications - Track Concrete sleepers and bearers“ which consists of the following par
21、ts: Part 1: General requirements; Part 2: Prestressed monobloc sleepers; Part 3: Twin-block reinforced sleepers; Part 4: Prestressed bearers for switches and crossings; Part 5: Special elements. Annexe A is normative. This document contains bibliographical references. No other European Standard is s
22、uperseded or replaced by this European Standard. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ire
23、land, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:56:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13230-4:2002 (E) 4 Introduction This part of the standard defines the specif
24、ic requirements relating to prestressed bearers for switches and crossings. These are additional requirements to EN 13230-1 and are necessary to have a complete standard dealing with prestressed concrete bearers for switches and crossings. 1 Scope This part of the European Standard defines additiona
25、l technical criteria and control procedures as well as specific tolerance limits relating to the design and manufacture of prestressed bearers for switches and crossings with a maximum length of 5,5 m. Bearers longer than 5,5 m are considered as special elements and it is essential that they comply
26、with EN 13230-5. 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. For dated references, subsequent amendm
27、ents 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 206-1, Concrete Part 1: Performance, production and con
28、formity. EN 13146-4, Railway applications - Track - Test methods for fastening systems - Part 4: Effect of repeated loading. EN 13230-1:2002, Railway applications - Track Concrete sleepers and bearers Part 1: General requirements. EN 13230-5, Railway applications - Track - Concrete sleepers and bear
29、ers Part 5: Special elements. 3 Special requirements 3.1 Design bending moments The bearers shall be designed with positive and negative design bending moment capacities with the objective of keeping them straight. 3.2 Positioning of fastening components An area of the concrete section shall be spec
30、ified by the purchaser to be free from pre-tensioned tendons for the location of fastening components. If required by the purchaser, the design of the bearer shall allow the repair or replacement of the cast-in fastening components. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:56:27 GMT
31、+00:00 2006, Uncontrolled Copy, (c) BSI EN 13230-4:2002 (E) 5 3.3 Tolerances The maximum tolerances specified in EN 13230-1:2002 - 6.1, apply to the concrete bearers. Measurement of tolerances shall not be checked until 48 hours after the transfer of the prestressing forces. 3.3.1 Tolerance on flatn
32、ess The maximum deviations of the total rail seat or base plate area are as follows: flatness: 1 mm; gradient: 0,5 mm per 150 mm. 3.3.2 Tolerances on fastening positioning The tolerances on the cast-in fastening components positioning shall be measured in accordance with Figure 1. Figure 1 Measureme
33、nt of tolerances on fastening components positioning Tolerance on dimensions A and D (on the same support area): + 1,0 mm Tolerance on dimensions B and C (between two separate supports areas): + 1,5 mm Tolerance on distance between the last cast-in component and the end of the bearer (E): + 10 mm Th
34、e tolerances specified above may be varied by the purchaser in case of special requirements and shall be defined on the drawings submitted by the purchaser. These tolerances shall apply to all cast-in components with either a direct or indirect fastening system. Licensed Copy: sheffieldun sheffieldu
35、n, na, Sun Oct 29 10:56:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13230-4:2002 (E) 6 3.3.3 Vertical deviation A maximum vertical deviation of 2 mm in both directions is allowed on a 4 m long base measured as shown in Figure 2; longer or shorter bearers shall be checked to ensure that they do
36、not exceed an equivalent curvature. Bearers shorter than 3,5 m need not be checked. Key 1 Rigid support 2 Bearer 3 Support (50 x 50 mm section) across width of bearer 4 Straight datum (laser, wire, etc) 5 Support across width of bearer 6 Top surface of bearer 7 Measurement point Figure 2 Vertical de
37、viation measurement 3.4 Distance from the end of the bearer to the nearest cast-in component If a cast-in component is to be positioned less than 200 mm from the end of the bearer, additional reinforcement may be required and its installation is the responsibility of the supplier. Additional reinfor
38、cement shall enable the bearer to comply with the requirements of the fastening systems in accordance with EN 13146-4. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:56:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13230-4:2002 (E) 7 4 Product testing The test arrangements are defined
39、in this clause. 4.1 Symbols The following symbols are used: M positive design bending moment, in kN.m; Mn negative design bending moment, in kN.m; Fb0 positive initial reference test load, in kN; Fb0n negative initial reference test load, in kN; Fbr test load which produces first crack at the bottom
40、 of the bearer, in kN; Fbrn test load which produces first crack at the top of the bearer, in kN; Fb0,05 test load for which a crack width of 0,05 mm persists at the bottom of the bearer after removal of the load, in kN; Fb0,05n test load for which a crack width of 0,05 mm persists at the top of the
41、 bearer after removal of the load, in kN; FbB test load which cannot be increased when the bottom of the bearer is cracked, in kN; FbBn test load which cannot be increased when the top of the bearer is cracked, in kN; Fbu lower test load for the fatigue test: Fb u = 0,25 x Fb 0, in kN; kb impact coe
42、fficient for positive static test; Kbn impact coefficient for negative static test; kbB impact coefficient for fatigue test. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:56:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13230-4:2002 (E) 8 4.2 Test arrangements The arrangement for the
43、static and fatigue tests is shown in Figure 3. Key 1 Rigid support 2 Articulated support (see annex A for details) 3 Resilient pad (see annex A for details) 4 Bearer Figure 3 Test arrangement For the static test, the bearer shall be arranged as shown in Figure 3. For the fatigue test, the load Fb sh
44、all be applied at the centre section of the bearer. 4.3 Test procedures 4.3.1 Test loads Fb0 is calculated from the geometry given in Figure 3 using the following equations: Fb0 = 35, 0 M in kN; Fb0n= 35, 0 Mn in kN. 4.3.2 Static test The static test procedure is shown in Figures 4.1 and 4.2 for the
45、 positive and negative bending moments. The maximum load applied is Fb0,05 or FbB whichever is reached first. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:56:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13230-4:2002 (E) 9 Key 1 Load 2 Time 3 Crack checking A Required part of test B
46、Optional part of test Figure 4.1 Static test procedure for design approval test Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:56:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13230-4:2002 (E) 10 Figure 4.2 Static test procedure for the routine test Licensed Copy: sheffieldun sheffield
47、un, na, Sun Oct 29 10:56:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13230-4:2002 (E) 11 4.3.3 Fatigue test The fatigue test procedure is shown in Figure 5. Key 1 Load 2 Time 3 Frequency (f) between 2 Hz and 5 Hz for 2 million cycles NOTE First cycle as for Figure 4.1 Figure 5a Licensed Copy: s
48、heffieldun sheffieldun, na, Sun Oct 29 10:56:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13230-4:2002 (E) 12 Key 1 Load 2 Time NOTE Typical cycle Figure 5b Figure 5 Fatigue test procedure Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 10:56:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
49、EN 13230-4:2002 (E) 13 4.4 Acceptance criteria The tests are managed according to the requirements of EN 13230-1:2002 - Clause 7. The crack width is measured following the rules of the EN13230-1:2002 - 7.2. 4.4.1 Static test The acceptance criteria for the design and routine static tests are as follows: Fbr Fb0; Fbrn Fbon; (FbB or Fb0,05 ) kb x F b0; (FbBn or Fb0,05 n ) kb n x Fb 0 n. The coef