1、BS EN 13230-4:2016Railway applications Track Concrete sleepers and bearersPart 4: Prestressed bearers for switches andcrossingsBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 13230-4:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implemen
2、tation of EN 13230-4:2016.It supersedes BS EN 13230-4:2009 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee RAE/2, Railway Applications - Track.A list of organizations represented on this committee can beobtained on request to its secretary.This publicat
3、ion does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016. Published by BSI StandardsLimited 2016ISBN 978 0 580 84808 7ICS 45.080; 91.100.30; 93.100Compliance with a British Standard cannot conf
4、er immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 May 2016.Amendments issued since publicationDate Text affectedBS EN 13230-4:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13230-4 May 2016 ICS 91.1
5、00.30; 93.100 Supersedes EN 13230-4:2009English Version Railway applications - Track - Concrete sleepers and bearers - Part 4: Prestressed bearers for switches and crossings Applications ferroviaires - Voie - Traverses et supports en bton - Partie 4 : Supports prcontraints pour appareil de voie Bahn
6、anwendungen - Oberbau - Gleis- und Weichenschwellen aus Beton - Teil 4: Spannbetonschwellen fr Weichen und Kreuzungen This European Standard was approved by CEN on 4 March 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this E
7、uropean 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 vers
8、ions (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,
9、 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, Slovakia, Slovenia, Spain, Sweden, S
10、witzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN nat
11、ional Members. Ref. No. EN 13230-4:2016 EBS EN 13230-4:2016EN 13230-4:2016 (E) 2 Contents Page European foreword . 4 Introduction 5 1 Scope 6 2 Normative references 6 3 Terms, definitions and symbols . 6 3.1 Terms and definitions . 6 3.2 Symbols . 7 4 Special requirement . 7 4.1 Characteristic bendi
12、ng moments 7 4.2 Positioning of fastening components . 7 4.3 Tolerances . 8 4.3.1 General 8 4.3.2 Tolerance of planeness . 8 4.3.3 Tolerances of fastening positioning . 8 4.3.4 Tolerance of vertical deviation from straight . 9 4.4 Distance from the end of the bearer to the nearest cast-in component
13、9 5 Product testing . 9 5.1 General 9 5.2 Test arrangements . 10 5.3 Test procedures 10 5.3.1 Test loads 10 5.3.2 Static test . 11 5.3.3 Fatigue test . 13 5.4 Acceptance criteria 14 5.4.1 General . 14 5.4.2 Static test . 14 5.4.3 Fatigue test . 14 5.5 Design approval tests . 15 5.5.1 General . 15 5.
14、5.2 Bending moments evaluation 15 5.5.3 Concrete . 15 5.5.4 Product inspection . 15 5.6 Routine tests 15 5.6.1 General . 15 5.6.2 Positive or negative bending moment evaluations for static test 15 5.6.3 Concrete . 15 5.6.4 Product checking 16 6 Manufacturing . 16 6.1 Manufacturing rules 16 6.2 Addit
15、ional marking . 16 7 Data to be supplied 16 7.1 Data supplied by the purchaser 16 7.2 Data provided by the supplier . 16 BS EN 13230-4:2016EN 13230-4:2016 (E) 3 Annex A (normative) Detailed drawings of the test arrangements . 17 A.1 Articulated support 17 A.2 Resilient pad . 18 Annex ZA (informative
16、) Relationship between this European Standard and the Essential Requirements of EU Directive 2008/57/EC 19 Bibliography . 21 BS EN 13230-4:2016EN 13230-4:2016 (E) 4 European foreword This document (EN 13230-4:2016) has been prepared by Technical Committee CEN/TC 256 “Railway applications”, the secre
17、tariat of which is held by DIN. This document supersedes EN 13230-4:2009. 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 November 2016, and conflicting national standards shall be withdrawn at th
18、e latest by November 2016. 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 2008/57/EC. For relationship with EU Directive 2008/57/EC, see informative Annex ZA, which i
19、s an integral part of this document. This European Standard is one of the EN 13230 series “Railway applications Track Concrete sleepers and bearers”, which consist of the following parts: Part 1: General requirements; Part 2: Prestressed monoblock sleepers; Part 3: Twin-block reinforced sleepers; Pa
20、rt 4: Prestressed bearers for switches and crossings; Part 5: Special elements; Part 6: Design. There is a change in the wording of the documents of EN 13230 (series) “design bending moment” is replaced by “characteristic bending moment” and “test bending moment”. According to the CEN/CENELEC Intern
21、al Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ire
22、land, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 13230-4:2016EN 13230-4:2016 (E) 5 Introduction This part of the EN 13230 series defines the specific requirements de
23、dicated to prestressed bearers for switches and crossings. These are additional requirements to EN 13230-1:2016 that are necessary to have a complete standard dealing with prestressed bearers for switches and crossings. The document specifies the test arrangements, the test procedures and the corres
24、ponding acceptance criteria. BS EN 13230-4:2016EN 13230-4:2016 (E) 6 1 Scope This part of the EN 13230 series defines additional technical criteria and control procedures as well as specific tolerance limits related to manufacturing and testing prestressed bearers for switches and crossings with a m
25、aximum length of 8,5 m. Bearers longer than 8,5 m are considered as special elements and are covered by EN 13230-5:2016. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, o
26、nly the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 206, Concrete - Specification, performance, production and conformity EN 13230-1:2016, Railway applications Track Concrete sleepers and bearers Part 1: General
27、requirements FprEN 10138 (all parts), Prestressing steels 3 Terms, definitions and symbols 3.1 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13230-1:2016 and the following apply: 3.1.1 prestressed monoblock bearer bearer manufactured using pre-tension
28、ed or post-tensioned tendons 3.1.2 characteristic positive bending moment Mk,pospositive bending moment at any position of the bearer 3.1.3 characteristic negative bending moment Mk,negnegative bending moment at any position of the bearer BS EN 13230-4:2016EN 13230-4:2016 (E) 7 3.2 Symbols For the p
29、urposes of this document, the symbols listed in Table 1 apply. Table 1 Symbols Symbol Definition Units Fb0Positive initial reference test load kN Fb0nNegative initial reference test load kN FbrTest load which produces first crack at the bottom of the bearer kN FbrnTest load which produces first crac
30、k at the top of the bearer kN Fb0,05Maximum test load for which a crack width of 0,05 mm persists at the bottom of the bearer after removal of the load kN Fb0,05nMaximum test load for which a crack width of 0,05 mm persists at the top of the bearer after removal of the load kN FbBMaximum test load w
31、hich cannot be increased when the bottom of the bearer is cracked kN FbBnMaximum test load which cannot be increased when the top of the bearer is cracked kN FbuLower test load for the fatigue test: Fbu= 0,25 Fb0kN kbImpact coefficient for positive static test kbnImpact coefficient for negative stat
32、ic test kbBImpact coefficient for fatigue test ktFactor used for calculation of acceptance criteria for first crack formation in static tests 4 Special requirement 4.1 Characteristic bending moments The bearer shall be designed with positive and negative characteristic bending moment capacities with
33、 the objective of keeping it straight. 4.2 Positioning of fastening components An area of the concrete section shall be specified by the purchaser to be free from prestressing tendons for the location of fastening components. If required by the purchaser, the design of the bearer shall provide for t
34、he repair or replacement of the embedded fastening components. BS EN 13230-4:2016EN 13230-4:2016 (E) 8 4.3 Tolerances 4.3.1 General The maximum tolerances specified in EN 13230-1:2016, 6.1 apply to concrete bearers. In case of early dimensional inspection of the concrete element, the quality plan sh
35、all take into account further shortening of the element. Measurement of tolerances shall be checked not before 48 h after transfer of prestressing forces. 4.3.2 Tolerance of planeness The maximum deviation of the total rail seat or base plate area is as follows: planeness: 1 mm; variation of planene
36、ss with regard to 2 points 150 mm apart: 0,5 mm. 4.3.3 Tolerances of fastening positioning The tolerances of the embedded fastening components positioning shall be measured in accordance with Figure 1. Figure 1 Measurement of tolerances on fastening components positioning Tolerance on dimensions A a
37、nd D (on the same support area): 1,0 mm Tolerance on dimensions B and C (between two separate support areas): 1,5 mm Tolerance between the last cast-in component and the end of the bearer (E): 10 mm The tolerances specified above may be varied by the purchaser in case of special requirements and sha
38、ll be defined on the drawings submitted by the purchaser. These tolerances shall apply to all embedded components with either direct or indirect fastening system. BS EN 13230-4:2016EN 13230-4:2016 (E) 9 4.3.4 Tolerance of vertical deviation from straight Figure 2 shows the vertical deviation measure
39、ment. Key 1 rigid support 2 bearer 3 support (50 mm 50 mm section) across width of bearer 4 straight datum 5 support across width of bearer 6 top surface of bearer 7 vertical deviation measurement area 8 measurement base Figure 2 Vertical deviation measurement Vertical deviation in both directions i
40、s measured on a 3,6 m long base as on Figure 2. Alternative measurement methods can be proposed by the manufacturer and agreed with the purchaser. Bearers shorter than 4 m need not be checked. Maximum allowed deviation is 3 mm on a 3,6 m base. For bearer length above 6 m, maximum allowed deviation i
41、s agreed between supplier and purchaser. 4.4 Distance from the end of the bearer to the nearest cast-in component The supplier defines the prestress anchoring area and special care to be taken into account for cast-in components near to the end of the bearer. 5 Product testing 5.1 General This secti
42、on defines the testing regime and rules for acceptance of concrete bearers. The layouts of the test arrangements are defined in this section. BS EN 13230-4:2016EN 13230-4:2016 (E) 10 5.2 Test arrangements The arrangement for the static and fatigue tests is shown in Figure 3. Key 1 rigid support 2 ar
43、ticulated 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 in Figure 3. For the fatigue test, the load Fb shall be applied at the centre section of the bearer. 5.3 Test procedures 5.3.1
44、 Test loads Fb0and Fb0nare calculated from the geometry given in Figure 3 using Formula (1) and Formula (2): Fb0= ,0,35k posMin kN (1) Fb0n= ,0,35k ne gMin kN (2) BS EN 13230-4:2016EN 13230-4:2016 (E) 11 5.3.2 Static test The static test procedure is shown in Figures 4 and 5 for the positive and neg
45、ative bending moments. The maximum load applied is Fb0,05or FbBwhichever is reached first. Key 1 load 2 time 3 crack checking (maximum duration: 5 min) 4 120 kN/min maximum 5 from 10 s minimum to 5 min maximum A required part of test B optional part of test Figure 4 Static test procedure for design
46、approval test BS EN 13230-4:2016EN 13230-4:2016 (E) 12 Key 1 load 2 time 3 crack checking (duration from 10s minimum to 5 min maximum) 4 120 kN/min maximum Figure 5 Static test procedure for the routine test Value of ktis adjusted according to the age of bearer at the time of testing. BS EN 13230-4:
47、2016EN 13230-4:2016 (E) 13 5.3.3 Fatigue test The fatigue test procedure is shown in Figures 6 and 7. Key 1 load 2 time 3 frequency (f) between 2 Hz and 10 Hz (identical frequency maintained during duration of test) for 2 million cycles 4 increase of load at 120 kN/min NOTE First cycle as in Figure
48、4. Figure 6 Fatigue test procedure BS EN 13230-4:2016EN 13230-4:2016 (E) 14 Key 1 load 2 time Figure 7 Dynamic load application for fatigue test 5.4 Acceptance criteria 5.4.1 General The tests are managed according to the requirements of EN 13230-1:2016, Clause 7. The crack width is measured followi
49、ng the rules of EN 13230-1:2016, 7.2. 5.4.2 Static test The acceptance criteria for the static design approval and routine tests are defined as follows: Fbr ktx Fb0 Fbrn ktx Fb0n FbBor Fb0,05 kb Fb0 FbBnor Fb0,05n kbn Fb0nThe coefficients kband kbnshall be provided by the purchaser. 5.4.3 Fatigue test The acceptance criteria for the fatigue test after 2 106cycles are as follows: crack width is 0,1 mm when loaded at Fb0; crack width is 0,05 mm when unloaded; FbB kbB Fb0when load continuously increased at
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