Fatigue-Proofing Cover Plates

The writers summarize all fatigue test data for cover plates on steel beams that were reported since 1969. The earlier studies established the fatigue strength of thin cover plates of Category E fatigue strength as well as thick cover plates of Category E fatigue strength. The later studies focused on improving the fatigue strength. The various techniques increased the mean fatigue life over that of Category E by factors of 1.5, 2.1, and 4.4 for ground, shot-peened, and remelted toes of the end welds, respectively; 6.5 for end-welding and grinding the cover plate ends to a 1:3 taper; 19 and more for bolting the ends that were left nonwelded; 18 and 13 for bridging the welded ends of noncracked and precracked cover plates, respectively, with bolted splices; and over 20 for adhesive-bonding the entire cover plate and bolting the ends. The last three methods cited above would fatigue proof rolled beams with cover plates typical of multigirder highway bridges.

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  • Authors:
    • Albrecht, Pedro
    • Lenwari, Akhrawat
  • Publication Date: 2007-5

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01051512
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 9 2007 7:46AM