Publication detail

Interaction between continuous welded rail and bridges with relatively large expansion length

PLÁŠEK, O. ŠVÁBENSKÝ, O. KREJČIŘÍKOVÁ, H. KLUSÁČEK, L. VENDEL, J.

Original Title

Interaction between continuous welded rail and bridges with relatively large expansion length

Type

conference paper

Language

English

Original Abstract

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.

Keywords

Track bridge interaction, continuous welded rail, permanent way

Authors

PLÁŠEK, O.; ŠVÁBENSKÝ, O.; KREJČIŘÍKOVÁ, H.; KLUSÁČEK, L.; VENDEL, J.

Released

23. 5. 2016

Publisher

University of Zagreb

Location

Zagreb

ISBN

1848-9842

Periodical

Road and Rail Structure IV

Number

4

State

Republic of Croatia

Pages from

405

Pages to

411

Pages count

7

BibTex

@inproceedings{BUT132970,
  author="Otto {Plášek} and Otakar {Švábenský} and Hana {Krejčiříková} and Ladislav {Klusáček} and Jiří {Vendel}",
  title="Interaction between continuous welded rail and bridges with relatively large expansion length",
  booktitle="Road and Rail Infrastructure IV",
  year="2016",
  journal="Road and Rail Structure IV",
  number="4",
  pages="405--411",
  publisher="University of Zagreb",
  address="Zagreb",
  issn="1848-9842"
}