IMPROVEMENT OF FATIGUE STRENGTH OF STEEL GIRDERS WITH TAPERED PARTIAL-LENGTH WELDED COVER PLATES

The fatigue strength of beams with tapered cover plate ends, which were repaired with one of three methods, was investigated experimentally. Most of the test specimens were precracked before the cover plate ends were repaired. Three repair methods were investigated: a friction-type bolted splice plate connection; air-hammer peening; and a hybrid combination of the previous two, known as partial bolted splice. Although specimens repaired with the bolted splice plate connection achieved Category B design life after repair, the splice plates did not prevent subsequent crack growth. Also, splice plate thickness was found to have a large influence on crack growth rate. Air-hammer peening was found to be effective in increasing the fatigue life of noncracked cover plate ends and details with small initial cracks. The partial bolted splice repair method was found to significantly improve the fatigue strength of precracked details, although it was not effective in preventing subsequent crack growth.

Language

  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 304-315
  • Monograph Title: FOURTH INTERNATIONAL BRIDGE ENGINEERING CONFERENCE, SAN FRANCISCO, CALIFORNIA, AUGUST 28-30, 1995. CONFERENCE PROCEEDINGS, 2 VOLUMES
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00711735
  • Record Type: Publication
  • ISBN: 0309061091
  • Files: TRIS, TRB
  • Created Date: Sep 6 1995 12:00AM