LINEARISED FATIGUE ASSESSMENT PROCEDURE FOR WELDED COMPONENTS IN BRIDGE STRUCTURES

An increasing amount of resources are being used these days to extend the fatigue life of existing bridges. These bridges were originally designed using experimentally determined S/N fatigue endurance data. However, S/N data cannot be used directly for the assessment of existing structures. Hence, a procedure is being developed for converting the S/N data for standard fatigue components, that is used for the design of new structures, into a simple hand assessment technique that can be used in the assessment of existing standard fatigue components. It is envisaged that this inexpensive procedure can be used for the initial stages of the fatigue assessment of welded components in order to determine whether more expensive procedures, such as computer modelling or site inspections, are required. It will be shown how the technique allows for variable loads and the sequence of loading. The procedure can also be used for predicting crack sizes and hence the frequency of site inspections. (A) For the covering abstract see IRRD 882313.

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 321-6

Subject/Index Terms

Filing Info

  • Accession Number: 00729472
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-419-21210-8
  • Files: ITRD
  • Created Date: Dec 26 1996 12:00AM