EN 13848-3:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Železniške naprave - Zgornji ustroj - Kakovost tirne geometrije - 3. del: Merilni sistemi - Tirna mehanizacija za gradnjo in vzdrževanjeBahnanwendungen - Oberbau - Qualität der Gleisgeometrie - Teil 3: Messsysteme - Gleisbau- und InstandhaltungsmaschinenApplications ferroviaires - Voie - Qualité géométrique de la voie - Partie 3 : Systèmes de mesure - Engins de travaux et de maintenance de la voieRailway applications - Track - Track geometry quality - Part 3: Measuring systems - Track construction and maintenance machines93.100Gradnja železnicConstruction of railways45.080Rails and railway componentsICS:Ta slovenski standard je istoveten z:EN 13848-3:2009SIST EN 13848-3:2009en,fr01-junij-2009SIST EN 13848-3:2009SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13848-3April 2009ICS 93.100 English VersionRailway applications - Track - Track geometry quality - Part 3:Measuring systems - Track construction and maintenancemachinesApplications ferroviaires - Voie - Qualité géométrique de lavoie - Partie 3 : Systèmes de mesure - Engins de travaux etde maintenance de la voieBahnanwendungen - Oberbau - Qualität der Gleisgeometrie- Teil 3: Messsysteme - Gleisbau- undInstandhaltungsmaschinenThis European Standard was approved by CEN on 19 March 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:
Avenue Marnix 17,
B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13848-3:2009: ESIST EN 13848-3:2009

Parameters measured by track construction and maintenance machine . 16 A.1 Introduction . 16 A.2 Track gauge . 16 A.3 Longitudinal level . 17 A.4 Cross level . 18 A.5 Alignment . 19 A.6 Twist . 20 Annex B (informative)
Principles of measurement . 21 B.1 General Description . 21 B.2 Longitudinal level and alignment . 21 B.3 Track gauge . 21 B.4 Cross level . 22 B.5 Twist . 22 Annex C (normative)
Description of field tests: values to be respected . 23 C.1 General . 23 C.2 Repeatability . 23 C.3 Reproducibility . 24 Bibliography . 25
machine same as “track construction and maintenance machine” (3.1) 3.3 sensor device which detects, measures and translates characteristics of track geometry into quantities that can be used for further data processing 3.4 measuring direction course between two points on a track, independent of orientation of the machine; 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 vehicle, e.g. a track construction and maintenance machine, with regards to which end of the vehicle is leading or trailing SIST EN 13848-3:2009

validation set of tests for determining if the measuring system of a track construction and maintenance machine complies with the requirements of this standard 3.9 calibration set of procedures for adjusting the measuring devices of track construction and maintenance machines in order to meet the requirements of this 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 3.12 reference track track with known characteristics, to allow adequate testing of the track geometry measuring and recording system 3.13 transfer function refer to EN 13848-2:2006 (Annex A) 3.14 resolution refer to EN13848-1 (3.1.8) SIST EN 13848-3:2009

5 Track geometry measuring system fitted on track construction and maintenance machines 5.1 General description This standard concerns only the track geometry measuring systems installed on the machines used to measure the parameters described in EN 13848-1. It does not cover the other measurement systems; for example those used for the tamping process. For the purpose of this standard, the track geometry measuring system fitted on machines is divided into several units as represented in Figure 1 below.
Figure 1 — Track geometry measuring system The track geometry measuring system installed on a machine is intended to: a) measure track geometry parameters; b) measure the distance run by the machine during measuring operations; c) associate these two measurements in order to set up a precise location and process the measured data, preferably on board, in order to analyse the track geometry parameters; d) record these parameters on paper and store them on computer readable media. The track geometry measuring system shall produce reliable results under normal operating conditions of the machine. The results of the above system can and have been used for track quality monitoring and safety assurance with respect to track geometry on track sections where maintenance works have been or will be carried out. This standard takes account of the capabilities of the equipment on existing machines in its requirements and as a consequence some of the requirements of EN 13848-1 have been relaxed. There is no requirement for a machine to measure all the parameters listed in EN 13848-1. However, the parameters to be measured and their processing shall at least meet the requirements stated in Annex A.
NOTE The track construction and maintenance machines fleet in Europe is much larger than the track recording car fleet, by a factor of 10 – 20. In many cases, although this is not their main function, these machines are used for track geometry measurement. The track geometry measurement should be made on a loaded track as defined in EN 13848-1. Since the load of the recording trailer affects the measurement, both the load and its distribution shall be constant.
MEASURING SYSTEM / DEVICE (Clause 5.5) DATA OUTPUT (Clause 5.7) DATA STORAGE (Clause 5.8) TRACK FEATURES INPUT (Clause 5.3) DATA LOCALISATION (Clause 5.4) DATA PROCESSING (Clause 5.6) SIST EN 13848-3:2009

5.2 Environmental conditions 5.2.1 Introduction All the measuring devices fitted on a machine shall produce reliable results under the environmental conditions specified below. 5.2.2 Climatic conditions 5.2.2.1 General The effects of climatic conditions on components outside and inside the machine shall be considered. These shall include: 5.2.2.2 Outside components: a) ambient temperature; b) condensation, particularly with sudden variation of temperature at the entrance or at the exit of a tunnel; c) possibility of snow; d) ambient relative humidity. 5.2.2.3 Inside components: a) ambient temperature for operating and storage conditions; b) ambient relative humidity. 5.2.3 Operating conditions The effects of operating conditions shall be considered. These shall include: a) ballast or iron fragments impacts; b) grease on the rail; c) reflection condition of the rail; SIST EN 13848-3:2009

f) safety requirements (laser beam, for example); g) vibrations and shocks; h) electromagnetic environment; i) compatibility with signalling and communication systems. 5.3 Track features input The track features input supports the data localisation (see Clause 5.4) and shall include at least: a) line identification; b) track identification; c) kilometreage. Other inputs may be required as, for example, the altitude for inertial devices. All these data shall be able to be entered by manual or automatic means. 5.4 Data localisation Data localisation shall be referenced either to track axis or to a reference rail. The reference point for the data localisation system may be the kilometre post or other fixed points.
The data localisation system gives the machine’s position along the track and shall fulfil the following functions: a) synchronises the position with the reference point by various methods, using for example the satellite based positioning system, active or passive beacons or other singular points; b) measures the distance covered by the machine, compensating for any backward movement, and is generally based on sampling signals, which could be given by a wheel-mounted encoder or any other equivalent method; c) automatically corrects or allows manual correction of the inaccuracies caused by: 1) wear, sliding, conicity of the machine wheels; 2) difference of kilometre’s length; 3) uncertainty of the distance run transducer. 5.5 Measuring system/device 5.5.1 General Track geometry measuring relies on sensors, signal transmission and signal processing following various measuring principles as described in Annex B. SIST EN 13848-3:2009

b) upper cut-off wavelength, defined at – 3 dB, Lu = upper limit of at least wavelength range D1 (for low-pass and band-pass filters); c) slope of at least 24 dB/octave in the sto
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