FATIGUE SHEAR STRENGTH OF SLENDER WEB PLATES

Slender steel plates are used often in structural engineering applications because of their high strength-to-weight ratio and their postbuckling reserve of stiffness and strength. Plates can experience large out-of-plane displacements induced by in-plane loading close to or exceeding the buckling load, which in turn induces relatively high secondary bending stresses at welded plate boundaries. Fatigue cracking and premature failure can result from the combined state of membrane and secondary bending stresses present under repeated loading. This paper describes a series of fatigue tests on slender plate-girder webs subjected to repeated shear loading. The test results include details on the load ranges and number of load cycles to fatigue failure; the location and extent of fatigue cracks; out-of-plane web deflections; and stress ranges at fatigue crack locations. The theoretical prediction of stress ranges at potential fatigue crack locations and fatigue-resistant design procedures are discussed.

Language

  • English

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Filing Info

  • Accession Number: 00711636
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 30 1995 12:00AM