1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 13848-4:2011Railway applications Track Track geometry qualityPart 4: Measuring systems Manual andlightweight devicesBS EN 13848-4:2011 BRITISH STANDARDNational forewordThis
2、 British Standard is the UK implementation of EN 13848-4:2011.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 publication does not pur
3、port to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012ISBN 978 0 580 69073 0ICS 93.100Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under
4、 the authority of theStandards Policy and Strategy Committee on 31 January 2012.Amendments issued since publicationDate Text affectedBS EN 13848-4:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13848-4 December 2011 ICS 93.100 English Version Railway applications - Track - Track geometry q
5、uality - Part 4: Measuring systems - Manual and lightweight devices Applications ferroviaires - Voie - Qualit gomtrique de la voie - Partie 4: Systmes de mesure - Dispositifs manuels et de faible poids Bahnanwendungen - Oberbau - Qualitt der Gleisgeometrie - Teil 4: Messsysteme - Handgefhrte und lei
6、chte Vorrichtungen This European Standard was approved by CEN on 5 November 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
7、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 re
8、sponsibility 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,
9、 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 COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Man
10、agement 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 13848-4:2011: EBS EN 13848-4:2011EN 13848-4:2011 (E) 2 Contents Page Foreword 41 Scope 52 Normative references 53 Terms and defi
11、nitions .54 Symbols and abbreviations 75 Track geometry measuring system fitted on trolleys or on manually operated devices .85.1 Introduction 85.2 General description .85.2.1 General description: TGMT .85.2.2 General description: MOD 95.3 Environmental conditions 105.3.1 Introduction . 105.3.2 Clim
12、atic conditions . 105.3.3 Operating conditions 105.4 Track features input . 105.4.1 General . 105.4.2 Track features input: TGMT . 115.4.3 Track features input: MOD . 115.5 Data localisation . 115.5.1 Data localisation: TGMT . 115.5.2 Data localisation: MOD . 115.6 Measuring system/device 125.6.1 Me
13、asuring system/device: TGMT 125.6.2 Measuring system/device: MOD 125.7 Data processing 135.7.1 Data processing: TGMT . 135.7.2 Data processing: MOD . 135.8 Data output 135.8.1 Data output: TGMT 135.8.2 Data output: MOD . 145.9 Data storage 145.9.1 Data storage: TGMT 145.9.2 Data storage: MOD 146 Tes
14、ting of track geometry measuring system . 146.1 Testing: TGMT . 146.1.1 General . 146.1.2 Calibration . 156.1.3 Validation tests . 156.1.4 Routine validation . 176.2 Testing: MOD . 176.2.1 Introduction . 176.2.2 Calibration . 186.2.3 Validation tests . 186.2.4 Routine validation . 18Annex A (normati
15、ve) Parameters measured by track geometry measuring trolleys (TGMTs) and manually operated devices (MODs) 19A.1 Introduction . 19A.2 Track gauge . 20BS EN 13848-4:2011EN 13848-4:2011 (E) 3 A.3 Longitudinal level 21A.4 Cross level . 22A.5 Alignment . 23A.6 Twist 24Annex B (informative) Principles of
16、measurement 25B.1 General description . 25B.2 Longitudinal level and alignment (TGMT only) 25B.2.1 Chord measuring system . 25B.2.2 Inertial measuring system 25B.3 Track gauge . 26B.4 Cross level . 26B.5 Twist 26Annex C (normative) TGMT / Description of field tests: values to be respected . 27C.1 Re
17、peatability Statistical analysis of parameter data 27C.2 Reproducibility Statistical analysis of parameter data . 27Bibliography 29BS EN 13848-4:2011EN 13848-4:2011 (E) 4 Foreword This document (EN 13848-4:2011) has been prepared by Technical Committee CEN/TC 256 “Railway applications”, the secretar
18、iat 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 June 2012, and conflicting national standards shall be withdrawn at the latest by June 2012. Attention is drawn to the
19、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 European Standard is one of the series EN 13848 “Railway applications Track Track geometry quality” as list
20、ed below: Part 1: Characterisation of track geometry; Part 2: Measuring systems Track recording vehicles; Part 3: Measuring systems Track construction and maintenance machines; Part 4: Measuring systems Manual and lightweight devices; Part 5: Geometric quality levels Plain line; Part 6: Characterisa
21、tion of geometric quality. 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
22、, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 13848-4:2011EN 13848-4:2011 (E) 5 1 Scope This part of this European Standard specifies the minimum r
23、equirements that shall be met by measuring systems fitted on track geometry measuring trolleys and manually operated devices to give an evaluation of track geometry quality when measuring one or more of the parameters described in EN 13848-1:2003+A1:2008. It sets out the acceptable differences from
24、EN 13848-1:2003+A1:2008 when using track geometry measuring trolleys and manually operated devices to measure track geometry. It applies to all track geometry measuring systems fitted to track geometry measuring trolleys and manually operated devices after the date of implementation of this standard
25、. 2 Normative references The following referenced documents are indispensable for the application 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 13848-1:2003+A1:2008,
26、 Railway applications Track Track geometry quality Part 1: Characterisation of track geometry EN 13848-2:2006, Railway applications Track Track geometry quality Part 2: Measuring systems Track recording vehicles EN 13848-5:2008+A1:2010, Railway applications Track Track geometry quality Part 5: Geome
27、tric quality levels Plain line 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 track geometry measuring trolley (TGMT) trolley designed for measuring one or more track geometry parameters, having the following characteristics: self-propelled,
28、 hauled or moved by human force; portability (capability to be placed readily on or off the track manually or by other means); capability of measuring from standstill to the maximum permissible speed of the trolley; having wheels which do not load the track as defined in Clause 5 of EN 13848-1:2003+
29、A1:2008. 3.2 manually operated device (MOD) hand tool designed for measuring track gauge and/or cross level at standstill 3.3 sensor device which detects, measures and translates characteristics of track geometry into quantities that can be used for further data processing BS EN 13848-4:2011EN 13848
30、-4:2011 (E) 6 3.4 measuring direction course between two points on a track, independent of orientation of the TGMT. Between two given points A and B, there are two opposite directions: A to B and B to A 3.5 orientation physical positioning of a TGMT, with regards to which end of the TGMT is leading
31、or trailing 3.6 repeatability degree of agreement between the values of successive measurements of the same parameter made under the same conditions, within a short period of time, where the individual measurements are carried out on the same section of track using the self-same measurement device a
32、nd interpretation methods, subject to the following: similar speed; same measuring direction; same TGMT orientation; similar environmental conditions. 3.7 reproducibility degree of agreement between the values of successive measurements of the same parameter made under varying conditions, within a s
33、hort period of time, where the individual measurements are carried out on the same section of track using the self-same measurement device and interpretation methods, subject to one or more of the following: variation of speed; different measuring directions; different TGMT orientations, if TGMT is
34、designed to measure in both orientations; different environmental conditions. 3.8 validation set of tests for determining whether the TGMT or MOD complies with the requirements of this standard 3.9 calibration set of procedures for adjusting the TGMT or MOD in order to meet the requirements of this
35、standard 3.10 event record of a track or line-side feature that can be either technical, physical or natural 3.11 localisation information required to locate events and the measured track geometry BS EN 13848-4:2011EN 13848-4:2011 (E) 7 3.12 reference track track with known characteristics, to allow
36、 adequate testing of the track geometry measuring and recording system 3.13 transfer function refer to Annex A of EN 13848-2:2006 3.14 resolution smallest change in the value of a quantity to be measured which produces a detectable change in the indication of the measuring instrument 3.15 uncertaint
37、y refer to ENV 13005:1999, 2.3.5 3.16 re-colouring algorithm which converts one signal into a different signal. It is used in EN 13848 series to convert a chord measurement signal into a D1, D2 or D3 measurement signal 4 Symbols and abbreviations For the purposes of this document, the following symb
38、ols and abbreviations apply. Table 1 Symbols and abbreviations No. Symbol Designation Unit1 D1 Wavelength range 3 m B Forward1b A-B Forward 2 B-A Forward3a A-B Reverse 3b A-B Reverse Table 3 Required comparisons Type of analysis TGMT with 1 measuring orientation TGMT with 2 measuring orientations Re
39、peatability 1a sections with significant cross level (at least 70 mm for a nominal track gauge of 1435 mm); sections with a quality level close to the alert limit level of the standard deviation, as defined in EN 13848-5:2008+A1:2010, Annex B. The test section shall be long enough to ensure that usa
40、ble data is obtained over 500 continuous metres of track for each run. Ideally, a reference track should be used or a comparison made with a track-recording vehicle. BS EN 13848-4:2011EN 13848-4:2011 (E) 17 Design track data such as curve radii, and cross level, as well as measured values, shall be
41、provided with the test report. 6.1.3.4 Simplified tests A simplified repeatability or reproducibility test shall be carried out in accordance with the manufacturers maintenance manual in the following circumstances: after a maintenance or repair operation on the track geometry measuring and recordin
42、g system; once a year. A simplified test shall consist of at least two runs in one direction over the same test section. The test section shall be long enough to ensure that usable data is obtained over 200 continuous metres of track for each run. The manufacturer shall specify the content of the si
43、mplified test to be undertaken for any relevant operation of maintenance or repair, in his maintenance manual. Static tests shall be carried out for example to ensure that there are no offsets in the measurement of cross level and track gauge. The results of the tests shall comply with the requireme
44、nts of Annex C. 6.1.4 Routine validation During measuring operations, suitable periodic checking shall be carried out by the operators in accordance with the manufacturers specifications. Periodically, static tests shall be carried out for example to ensure that there are no offsets in the measureme
45、nt of cross level and track gauge. 6.2 Testing: MOD 6.2.1 Introduction This clause covers actions and procedures, which are necessary to ensure effective operation of the measuring devices. Compliance shall be demonstrated by the following procedures: Calibration This ensures an accurate setting of
46、the devices within the track geometry measuring system. Validation tests These demonstrate that the whole system complies with the requirements of Annex A for the measured parameters. Routine validation This ensures that the system continues to operate correctly during routine operations. BS EN 1384
47、8-4:2011EN 13848-4:2011 (E) 18 6.2.2 Calibration The measuring device shall be calibrated to ensure the continued accuracy of measurements. A manual describing the calibration requirements for the measuring device and the corresponding processing system if present shall be prepared by the relevant m
48、anufacturer. The calibration requirements shall cover the method of checking and adjusting the system. Calibration shall be carried out at specified stages. As a minimum, calibration shall take place: before first use; after changes (new or maintained state) to the software or hardware systems (incl
49、uding mechanical parts) of the MOD which may affect the track geometry measuring system; after periodic maintenance or repair of the MOD as described in the relevant manual; when an MOD fails a validation test. 6.2.3 Validation tests Due to the simple characteristics of MODs, considerations of reproducibility and repeatability do not apply. Instea
