CEN/TR 16513:2014
(Main)Railway applications - Track - Survey of track geometry quality
Railway applications - Track - Survey of track geometry quality
CEN/TC 256/SC 1/WG 28 "Railway applications/Infrastructure/Track geometry quality" conducted a survey of the geometric quality of track across European railway networks. This was to get an understanding and overview of the track geometry across Europe in order to support the definition of track geometric quality classes for the writing of EN 13848-6.
This Technical Report describes the methodology used for the survey and gives the results.
Bahnanwendungen - Oberbau - Überblick über die geometrische Gleislagequalität
Das europäische Normungsgremium CEN/TC 256/SC 1/WG 28 "Bahnanwendungen/Infrastruktur/Gleis-geometriequalität" erstellte einen Überblick der geometrischen Gleislagequalität in den europäischen Eisenbahninfrastrukturunternehmen. Diese Darstellungen dienen der Verständigung und zeigen eine Übersicht der Gleisgeometrie in Europa zur Konkretisierung der Gleislagequalitätsklassen für die Erstellung des Norm-Entwurfs prEN 13848-6.
Dieser Technische Bericht beschreibt die angewandte Methodik für den Überblick und enthält die Ergebnisse.
Applications ferroviaires - Voie - Analyse de la qualité de la géométrie de la voie
Le CEN/TC 256/SC 1/GT 28 "Applications ferroviaires/Infrastructure/Qualité de la géométrie des voies" a effectué une étude sur la qualité géométrique des voies sur l'ensemble des réseaux ferroviaires européens. L'objectif était d'appréhender la qualité de la géométrie des voies dans toute l'Europe afin d'en obtenir une vue d'ensemble pour soutenir les travaux visant à définir des classes de la qualité géométrique, en vue de l'élaboration du prEN 13848-6.
Le présent Rapport technique décrit la méthodologie utilisée dans le cadre de cette étude et fournit les résultats obtenus.
Železniške naprave - Zgornji ustroj proge - Analiza kakovosti tirne geometrije
Odbor CEN/TC 256/SC 1/WG 28 "Železniške naprave/Infrastruktura/Kakovost tirne geometrije" je izvedel analizo kakovosti tirne geometrije evropskih železniških omrežij. S tem so želeli dobiti vpogled in pregled tirne geometrije po Evropi za pomoč pri definiciji kakovostnih razredov tirne geometrije v okviru priprave standarda EN 13848-6.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2014
Železniške naprave - Zgornji ustroj proge - Analiza kakovosti tirne geometrije
Railway applications - Track - Survey of track geometry quality
Bahnanwendungen - Oberbau - Überblick über die geometrische Gleislagequalität
Applications ferroviaires - Voie - Analyse de la qualité de la géométrie de la voie
Ta slovenski standard je istoveten z: CEN/TR 16513:2014
ICS:
93.100 Gradnja železnic Construction of railways
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
TECHNICAL REPORT
CEN/TR 16513
RAPPORT TECHNIQUE
TECHNISCHER BERICHT
March 2014
ICS 93.100
English Version
Railway applications - Track - Survey of track geometry quality
Applications ferroviaires - Voie - Analyse de la qualité de la Bahnanwendungen - Oberbau - Überblick über die
géométrie de la voie geometrische Gleislagequalität
This Technical Report was approved by CEN on 18 May 2013. It has been drawn up by the Technical Committee CEN/TC 256.
CEN members are the national standards bodies of Austria, 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, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 16513:2014 E
worldwide for CEN national Members.
Contents Page
Foreword . 3
1 Scope . 4
2 Terms and definitions . 4
3 Symbols and abbreviations . 4
4 Methodology . 5
4.1 General considerations and confidentiality . 5
4.2 Collected data . 5
4.2.1 Scope of survey . 5
4.2.2 Speed classes applied . 5
4.2.3 Calculation of standard deviation . 6
4.2.4 Calculation of cumulative frequency distributions . 6
4.3 Data processing . 6
5 Participating networks and involvement . 6
5.1 Participating networks . 6
5.2 Sample size of track data . 7
6 Results . 7
6.1 Results for standard deviation of longitudinal level . 7
6.2 Results for standard deviation of alignment . 9
6.3 Observation on results . 11
7 Application of the results to EN 13848-6 . 12
Annex A (informative) Tables for cumulative frequency distributions for average track quality of all
participating networks . 13
Annex B (informative) Spread of data collected . 15
Bibliography . 17
Foreword
This document (CEN/TR 16513:2014) has been prepared by Technical Committee CEN/TC 256 “Railway
applications”, the secretariat of which is held by DIN.
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.
1 Scope
CEN/TC 256/SC 1/WG 28 "Railway applications/Infrastructure/Track geometry quality" conducted a survey of the
geometric quality of track across European railway networks. This was to get an understanding and overview of the
track geometry across Europe in order to support the definition of track geometric quality classes for the writing of
EN 13848-6.
This Technical Report describes the methodology used for the survey and gives the results.
2 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1
track quality index
TQI
value that characterises track geometry quality of a track section based on parameters and measuring methods
compliant with the EN 13848 series
2.2
track quality class
TQC
characterisation of track geometry quality as a function of speed and expressed as a range of TQIs
2.3
re-colouring
algorithm which converts one signal into a different signal and which is used in the EN 13848 series to convert a
chord measurement signal into a D1 or D2 measurement signal
3 Symbols and abbreviations
For the purposes of this document, the following symbols and abbreviations apply.
Table 1 — Symbols and abbreviations
Symbol Designation Unit
AL Alignment mm
D1 Wavelength range 3 m < λ ≤ 25 m m
D2 Wavelength range 25 m < λ ≤ 70 m m
λ Wavelength m
LL Longitudinal level mm
QN1 50 % quality level according to EN 14363:2005 mm
QN2 90 % quality level according to EN 14363:2005 mm
SD Standard deviation mm
TQI Track Quality Index –
ETQS European track quality survey –
TQC Track Quality Class –
V Speed km/h
NOTE In this Technical Report, "AL" stands for “alignment” and is not to be confused with AL standing for “alert limit” as
defined in EN 13848-5.
4 Methodology
4.1 General considerations and confidentiality
The objective of the European track quality survey (ETQS) was to get an understanding and overview of the track
geometry quality across Europe assessed as standard deviations. In order to achieve this objective without an
exchange of an enormous amount of raw data, an approach was agreed based on the evaluation of quality data of
thirteen participating networks. The quality data of each network was provided in the form of cumulative frequency
distributions of alignment and longitudinal level.
Each of the participating networks provided quality data for a representative part of their network according to the
technical specification described below in 4.2. With the help of a standardized inquiry form, the cumulative frequency
distributions of the quality data were determined and were sent to the CEN/TC 256/SC 1/WG 28 clearing office.
In order to make the data anonymous, the clearing office assigned a random network number to the quality data of
each network and summarized the track geometry quality data in an anonymous comparison table. This was
supplied to CEN/TC 256/SC 1/WG 28 only.
Without agreement of all participating networks neither the clearing office nor CEN/TC 256/SC 1/WG 28 may
disclose or publish any of the quality data or the assignment between quality data and participating networks as a
whole or in parts to anyone else.
4.2 Collected data
4.2.1 Scope of survey
The survey collected data for all main lines, main tracks in stations and isolated switches or group of switches
situated in plain line and run at line speed. All side tracks, station tracks or other less important tracks were
excluded.
The survey was based on measurements of track taken typically at 25 cm spacing which results in a large volume of
data. For example, a network length of 10 000 km track would result in a cumulative frequency distribution
comprising of over 40 million measuring points.
The survey was conducted using the most recent measurement value for each location. This was summarized in a
cumulative frequency distribution.
Where it was not possible for a participating network to do the calculation over their whole network, the calculation
was done for at least 5 % of the network while the track layout and track quality considered in the sample had to be
as representative as possible for the network. The track length considered for each speed class had to be quoted in
the standardized inquiry form.
4.2.2 Speed classes applied
The survey was done in five speed classes according to the EN
...
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