On the Assessment of Fatigue Damage in Railway Bridges

Dermot W. O'Dwyer

doi:10.4028/www.scientific.net/KEM.569-570.406

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 569-570On the Assessment of Fatigue Damage in Railway...

On the Assessment of Fatigue Damage in Railway Bridges

Abstract:

This paper discusses the benefits to using direct strain measurements when undertaking a fatigue assessment of a railway bridge. The paper gives a brief overview of the assessment methodology for assessing fatigue in a bridge carrying a single track before outlining a method suitable for assessing multi-track bridges. The accuracy of a fatigue assessment depends on the level of knowledge of many different parameters including: an accurate loading history comprising axle loads and train frequencies over its service life; details of changes to the track form, including changes in the depth of ballast; and changes to the structure including damage or repairs. Many of these parameters are not known with certainty. However, using monitoring systems to measure the strain cycles in a bridge helps to address some of these uncertainties and hence improves the accuracy of the assessment.

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Periodical:

Key Engineering Materials (Volumes 569-570)

Pages:

406-413

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.569-570.406

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Online since:

July 2013

Authors:

Dermot W. O'Dwyer

Keywords:

Assessment, Bridge, Fatigue, Railway

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