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The role of key structural components such as bearings, expansion joints, dampers and STUs in addressing the challenges faced by railway bridges

The role of key structural components such as bearings, expansion joints, dampers and STUs in addressing the challenges faced by railway bridges
Author(s): , ,
Presented at IABSE Symposium: Challenges for Existing and Oncoming Structures, Prague, Czech Republic, 25-27 May 2022, published in , pp. 1699-1706
DOI: 10.2749/prague.2022.1699
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In the field of bridge construction and maintenance, the demands on key structural components such as bearings, expansion joints, dampers and shock transmission units are typically considerably mor...
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Bibliographic Details

Author(s): (mageba Gesellschaft m.b.H., Brno, Czech Republic)
(mageba Gesellschaft m.b.H., Wels, Austria)
(mageba Group, Bulach, Switzerland)
Medium: conference paper
Language(s): English
Conference: IABSE Symposium: Challenges for Existing and Oncoming Structures, Prague, Czech Republic, 25-27 May 2022
Published in:
Page(s): 1699-1706 Total no. of pages: 8
Page(s): 1699-1706
Total no. of pages: 8
DOI: 10.2749/prague.2022.1699
Abstract:

In the field of bridge construction and maintenance, the demands on key structural components such as bearings, expansion joints, dampers and shock transmission units are typically considerably more demanding in the case of railway bridges than of road bridges. Loading from rail traffic is generally much higher, including not only vertical loads but also horizontal forces due to braking, acceleration and track curvature, and can give rise to stronger vibrations. Bearings must be designed to resist all such forces and accommodate required movements, expansion joints must be designed to prevent the ingress of ballast stones where appropriate or alternatively to allow railway/tram tracks to pass through at grade, and the need for dampers (shock absorbers) and shock transmission units (lock-up devices) to control the flow of forces through the structure is typically much greater. This subject is explored with examples of suitable technical solutions and of their application.

Keywords:
bridge Bearings dampers railroad control movements expansion joints loads STUs
Copyright: © 2022 International Association for Bridge and Structural Engineering (IABSE)
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