CEN/TR 17231:2018

Eurocode 1: Actions on Structures - Traffic Loads on Bridges - Track-Bridge Interaction

This Technical Report reviews current practice with regard to designing, constructing and maintaining the parts of bridges and tracks where railway rails are installed across discontinuities in supporting structures. Current Standards and Codes of Practice are examined and some particular case histories are reviewed. The Technical Report gives guidance with respect to current best practice and makes recommendations for future standards development and also identifies areas in which further research and development is needed.

Eurocode 1: Einwirkungen auf Tragwerke - Verkehrslasten auf Brücken - Gleis-Brücken Interaktion

Dieses Dokument überprüft die gegenwärtige Praxis in Bezug auf Bemessung, Bau und Instandhaltung Brückenbauteilen und Gleisen in Bereichen, in denen die Eisenbahnschienen über Unstetigkeitsstellen der gleistragenden Strukturen hinweg verlegt sind. Gegenwärtige Normen und Leitfäden für die Praxis werden untersucht und einige spezielle Fälle hinsichtlich ihrer historischen Entwicklung überprüft.
Das Dokument dient als Leitfaden in Bezug auf die gegenwärtige bewährte Vorgehensweise und gibt Empfehlungen für die Erarbeitung zukünftiger Normen und es identifiziert Bereiche, in denen weiterführende Forschung und Entwicklung nötig sind.

Eurocode 1 : Actions sur les structures - Actions sur les ponts, dues au trafic - Interaction voie-pont

Evrokod 1: Vplivi na konstrukcije - Prometna obtežba mostov - Medsebojni vpliv tračnice-most

To tehnično poročilo podaja pregled trenutne prakse, povezane s projektiranjem, postavitvijo ter vzdrževanjem delov mostov in tračnic, pri čemer so tračnice nameščene na nehomogenih podpornih konstrukcijah. Preverjeni so trenutni standardi in pravila ravnanja ter pregledanih je nekaj posebnih preteklih primerov. Tehnično poročilo podaja navodila v zvezi s trenutno najboljšo prakso in priporočila za prihodnje razvojne standarde ter določa področja, za katera so potrebne nadaljnje raziskave in razvoj.

General Information

• Status: Published
• Publication Date: 31-Jul-2018
• ICS: 91.010.30 - Technical aspects
• ICS: 93.040 - Bridge construction
• Technical Committee: CEN/TC 250 - Structural Eurocodes
• Drafting Committee: CEN/TC 250/SC 1/WG 3 - Traffic loads on bridges
• Current Stage: 9020 - Submission to 2 Year Review Enquiry - Review Enquiry
• Start Date: 15-Apr-2024
• Completion Date: 15-Apr-2024
• Ref Project: SIST-TP CEN/TR 17231:2018 - Eurocode 1: Actions on Structures - Traffic Loads on Bridges - Track-Bridge Interaction

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2018
(YURNRG9SOLYLQDNRQVWUXNFLMH3URPHWQDREWHåEDPRVWRY0HGVHERMQLYSOLY
WUDþQLFHPRVW
Eurocode 1: Actions on Structures - Traffic Loads on Bridges - Track-Bridge Interaction
Eurocode 1: Einwirkungen auf Tragwerke - Verkehrslasten auf Brücken - Gleis-Brücken
Interaktion
Eurocode 1 : Actions sur les structures - Actions sur les ponts, dues au trafic - Interaction
voie-pont
Ta slovenski standard je istoveten z: CEN/TR 17231:2018
ICS:
45.080 7UDþQLFHLQåHOH]QLãNLGHOL Rails and railway
components
91.010.30 7HKQLþQLYLGLNL Technical aspects
93.040 Gradnja mostov Bridge construction
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN/TR 17231
TECHNICAL REPORT
RAPPORT TECHNIQUE
August 2018
TECHNISCHER BERICHT
ICS 91.010.30; 93.040
English Version
Eurocode 1: Actions on Structures - Traffic Loads on
Bridges - Track-Bridge Interaction
Eurocode 1 : Actions sur les structures - Actions sur les Eurocode 1: Einwirkungen auf Tragwerke -
ponts, dues au trafic - Interaction voie-pont Verkehrslasten auf Brücken - Gleis-Brücken
Interaktion
This Technical Report was approved by CEN on 16 April 2018. It has been drawn up by the Technical Committee CEN/TC 250.

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, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 17231:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Symbols and abbreviations . 9
5 Description of the Technical Issue . 10
5.1 General . 10
5.2 Axial effects . 11
5.2.1 Origin of axial forces and displacements . 11
5.2.2 Force transfer between track and deck ends . 11
5.2.3 Rail stresses . 11
5.2.4 Forces acting on the fixed point (e.g. Bearing forces) . 14
5.2.5 Interaction with sub-structure . 14
5.3 Vertical effects . 15
5.3.1 Effect of vertical forces and displacements . 15
5.3.2 Bridge deck end rotation . 15
5.4 Limits to the need for detailed calculations . 16
5.5 Calculation of multiple loading conditions . 17
5.6 Effect of bridge deformations . 17
5.6.1 Effect on track geometry . 17
5.6.2 Effect on stability of ballasted track . 18
5.6.3 Effect of ballast degradation over structural joints. . 18
5.7 Effects on track construction and maintenance activities . 18
6 History and background . 19
6.1 Existing codes and standards . 19
6.2 Differences between national rules. 21
7 Case studies . 21
7.1 Scheldt River Bridge (Belgium) . 21
7.2 Dedicated high speed lines in France and Spain . 21
7.3 Olifants River Bridge (South Africa). 21
7.4 Bridges on Denver RTD (USA) . 21
7.5 Historic bridges in central Europe . 22
7.6 Semi-integral bridges on German high speed lines . 22
8 Design considerations for track. . 23
8.1 Representation of axial behaviour of track. . 23
8.2 Understanding of ballast behaviour . 24
8.2.1 Ballast properties. 24
8.2.2 Importance of effective ballast retention . 24
8.3 Description/ limitations of available track devices for mitigation of effects . 24
8.3.1 Principles . 24
8.3.2 Practical solutions . 26
8.4 Description/ limitations of bridge design for mitigation of effects . 31
8.4.1 General . 31
8.4.2 "Steering bars” and virtual fixed points. . 31
8.4.3 Damper Systems . 32
8.5 Effects of track curvature and switches and crossings . 32
9 Design criteria . 33
9.1 General . 33
9.1.1 Rail stress . 33
9.1.2 Rail break containment . 33
9.2 Displacement limits . 33
9.3 Differentiation between ultimate- and service-loading . 35
9.4 Safety factors . 35
9.5 Differences between ballasted and ballastless tracks . 35
9.6 Calculations for configurations with rail expansion devices . 36
10 Calculation methods . 36
10.1 Methods in EN 1991-2:2003 . 36
10.1.1 General . 36
10.1.2 Software based on UIC 774-3R . 38
10.1.3 Linear analysis with manual intervention (LAMI) . 38
10.2 Load configurations . 40
10.3 Sensitivity analysis . 40
10.4 Numerical comparisons of calculation methods . 41
11 Information and process management . 46
12 GUIDANCE – Current best practice . 47
12.1 Bridge design principles . 47
12.2 Track design principles . 47
12.2.1 Ballasted track . 47
12.2.2 Ballastless track . 47
12.2.3 Special rail fastening systems . 48
12.2.4 Rail expansion devices . 48
12.2.5 Derivation of the behaviour . 48
13 Recommendations for future standards development . 49
14 Recommendations for future research and development . 49
14.1 General . 49
14.2 Improved input data for existing calculation methods. 49
14.3 Extension of existing models to include other track configurations . 50
14.4 Collecting data for better verification of analytical models . 50
14.5 Providing a basis for developing new, more rigorous, models . 50
Annex A (informative) Calculation of rail break gap . 51
A.1 Rail break gap for track with conventional fastenings (not on a bridge) . 51
A.2 Rail break gap for track on a bridge, with conventional fastenings . 52
A.3 Rail b
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