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Extending the fatigue service life of a railway bridge by local approaches
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.ORCID iD: 0000-0002-8926-2140
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.ORCID iD: 0000-0002-2833-4585
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.ORCID iD: 0000-0002-5447-2068
2013 (English)Conference paper, Published paper (Refereed)
Abstract [en]

In this paper, fatigue assessment of a steel railway bridge is presented. The bridge is located in central Stockholm, Sweden, and is one of the most vital links for the railway network. The bridge services both freight trains and commuter trains with more than 500 passages per day. The main load bearing structure is designed as a steel grillage of welded I-beams. Fatigue critical sections have been identified at locations where secondary bracing systems are welded to the flanges of the I-beams. Both numerical simulations and extensive field measurements have shown a significant exceedance of the theoretical fatigue service life. Based on analysis of local stress concentrations, improvement of fatigue critical details have been suggested. The decrease in stress concentration is demonstrated both by numerical simulations and in-situ field measurements and shows a significant improvement when estimating the remaining fatigue service life.

Place, publisher, year, edition, pages
2013.
Keyword [en]
cumulative fatigue damage; railway bridge; hotspot stress; finite element method.
National Category
Infrastructure Engineering
Identifiers
URN: urn:nbn:se:kth:diva-103599OAI: oai:DiVA.org:kth-103599DiVA: diva2:560848
Conference
International IABSE Conference, Rotterdam May 6 - 8, 2013 Assessment, Upgrading and Refurbishment of Infrastructures
Note

QC 20130422

Available from: 2013-04-22 Created: 2012-10-16 Last updated: 2013-04-22Bibliographically approved

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fulltext(639 kB)489 downloads
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174f287e1ac818781bcdc6394e0b3325c89f7542ee2281d03d57c580754e0e02aadbb36774357663770f9890e7ec4b08c36795a8fb3d46a9f7a6e69d2dd2d252
Type fulltextMimetype application/pdf

Authority records BETA

Andersson, AndreasLeander, JohnKaroumi, Raid

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
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  • text
  • asciidoc
  • rtf