Fatigue Design of Welded Tubular Steel Bridge Details

Steel bridge design can involve highly complex structures, especially when aesthetic factors rather than functionality dictate bridge design features. This paper reports on the design of such a bridge. The concept design uses very complex nodes with up to 8 intersecting members, thus creating complex stress fields and high stress concentration spots. The bridge was designed in compliance with Portuguese regulations and Eurocode 3. Due to the complexity of the details, simplified methodologies of codes such as Eurocode 3 or BS5400 could not be used directly in the fatigue design, and more refined 3-D finite element method analyses had to be used to calculate the structural hot spot stress range at the weld toe. Two critical nodes were selected for analysis and 2 models were studied using shell elements.


  • English

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References; Tables;
  • Pagination: pp 139-148
  • Monograph Title: Fourth International Conference on Current and Future Trends in Bridge Design, Construction and Maintenance

Subject/Index Terms

Filing Info

  • Accession Number: 01104222
  • Record Type: Publication
  • ISBN: 072773475X
  • Files: TRIS
  • Created Date: Jul 16 2008 2:07PM