Interaction Between Continuous Welded Rail and Bridges with Relatively Large Expansion Length

4th International Conference on Road and Rail Infrastructure (CETRA 2016)

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Field Value
 
Title Interaction Between Continuous Welded Rail and Bridges with Relatively Large Expansion Length
 
Creator Otto Plášek; Institute of Railway Structures and Constructions Faculty of Civil Engineering Brno University of Technology
Otakar Švábenský; Brno University of Technology, Faculty of Civil Engineering, Czech Republic
Hana Krejčiříková; Department of Railway Structures Faculty of Civil Engineering Czech Technical University in Prague
Ladislav Klusáček; Institute of Concrete and Masonry Structures Faculty of Civil Engineering Brno University of Technology
Jiří Vendel; Institute of Railway Structures and Constructions Faculty of Civil Engineering Brno University of Technology
 
Subject continuous welded rail; track bridge interaction
 
Description Regarding indisputable savings in maintenance costs continuous welded rail is installed in almost all track sections which are renewed or newly constructed. A need to solve the interaction between the track and bridge preferably without expansion joints has arisen. A complex evaluation of combined response to variable actions is not required according to the Czech national regulation if the track is renewed and the bridge expansion length is within limits. Exceptions are often allowed for bridges whose expansion length exceeds the limits. Good experience supports an increase of limits but theoretical analysis and structure monitoring are desirable. Five bridge structures – steel, concrete, combined and different deck – with ballast, with timbers or direct fastening, had been monitored for three years in all climate conditions. The displacement of track and bridge was surveyed by precise geodetic methods. The longitudinal reactions in bridge fixed bearings were measured for the bridge. Finite element models were built for all the monitored bridges. The backward analyses were carried out for all surveying epochs in the aim to define basic parameters of combined response – bilinear longitudinal resistance of track and the longitudinal stiffness of bridge support. The results serve both to evaluate the parameters defined in European standard EN 1991-2 for ballasted track and to complete the parameters for non-ballasted track.
 
Publisher CETRA 2016
 
Contributor Technology Agency of the Czech Republic; Railway Infrastructure Administration
 
Date 2017-02-28 15:17:19
 
Type Peer-reviewed Paper
 
Identifier http://master.grad.hr/cetra/ocs/index.php/cetra4/cetra2016/paper/view/546
 
Source CETRA 2016; 4th International Conference on Road and Rail Infrastructure
 
Language en
 
Rights Authors who submit to this conference agree to the following terms:<br /> <strong>a)</strong> Authors retain copyright over their work, while allowing the conference to place this unpublished work under a <a href="http://creativecommons.org/licenses/by/3.0/">Creative Commons Attribution License</a>, which allows others to freely access, use, and share the work, with an acknowledgement of the work's authorship and its initial presentation at this conference. <br /> <strong>b)</strong> Submitted full papers will be published in the book of proceedings "Road and Rail Infrastructure IV" as well as in digital form (on a CD). Conference organiser is allowed to publish author's names, institution and country as well as the paper abstract on the conference web site.
 

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