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MEASUREMENT AND INTERPRETATION OF DYNAMIC WHEEL LOADS ON BRIDGES (PHASE 2). FINAL REPORT

The report describes the British contribution to the second phase of a joint ECSC research project to investigate traffic loads and stresses in steel bridges, and to relate them where appropriate to fatigue design standards. Measurements are presented of axle load spectra from several UK bridge sites and of dynamic wheel load variations due to surface irregularities and these are discussed with relation to the design standard. The traffic induced stresses in a steel bridge deck are significantly reduced by an asphalt deck surfacing, but because asphalt is viscoelastic and temperature and age dependant, its contribution is not taken into account in fatigue design. The report examines the effect of asphalt temperature on stresses and outlines a method to quantify its overall contribution. The report examines the design curves in the British code BS5400, the Dutch code, and the proposed Eurocode and shows that large differences in fatigue lives may be calculated using the three codes. BS5400 uses the "reservoir" method to calculcate stress range spectra; the report shows that the stress spectrum obtained and hence the fatigue life calculated is influenced by the sequence in which the stresses are assembled to produce the stress history. (Author/TRRL)

  • Corporate Authors:

    Commission of the European Communities

    Directorate-General for Information, Market and Innovation
    Luxembourg,   Luxembourg 
  • Authors:
    • PAGE, J
  • Publication Date: 1984

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: 69 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00459318
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Report/Paper Numbers: NEUR 9016
  • Files: ITRD, TRIS
  • Created Date: Oct 31 1986 12:00AM