Enhanced Assessment of the Remaining Service Life of a Steel Railway Bridge

Abstract:

During annual inspections of one of Sweden’s most important railway bridges, the Söderström Bridge in central Stockholm, cracks in the web of the main steel beams have been discovered. Extensive theoretical work has been undertaken to assess the remaining service life of the bridge. Furthermore, the bridge has recently been instrumented to enhance the theoretical predictions by monitoring the real railway traffic as well as the response of the bridge. This article describes the monitoring program and the analysis methods used. Some interesting results regarding the remaining fatigue life are presented.

• Periodical: Key Engineering Materials (Volumes 413-414)
• Pages: 245-252
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.413-414.245
• Online since: June 2009
• Authors: John Leander, Andreas Andersson, Raid Karoumi
• Keywords: Bridge Assessment, Fatigue, Monitoring, Railway Bridge

References

[1] D. M. Frangopol and A. Strauss and S. Kim: Bridge Reliability Assessment Based on Monitoring, Journal of Bridge Engineering, ISSN 1084-0702, Volume 13, Number 3, May/June (2008).

DOI: 10.1061/(asce)1084-0702(2008)13:3(258)

[2] A. Andersson: Utmattningsanalys av järnvägsbroar (Fatigue Assessment of Railway Bridges). Licentiate Thesis in Strucutral Design and Bridges, the Royal Institute of Technology (KTH), Stockholm, 2008. (in Swedish, in press).

[3] J. Leander: The bridge over Söderström, measurements and evaluation considering fatigue, TRITA-BKN. Report 126, Structural Design and Bridges, ISSN 1103-4289, the Royal Institute of Technology (KTH), Stockholm, 2008. (in Swedish).

[4] M. Matsuishi and T. Endo: Fatigue of Metals Subjected to Varying Stress, paper presented to the Japan Society of Mechanical Engineers, Fukuoka, Japan, March (1968).

[5] Eurocode 1993-1-9: Design of steel structures, Part 1. 9: Fatigue, European standard, CEN, (2003).