FATIGUE STRENGTH OF WELDED STEEL BEAMS

THE ESSENTIAL FINDINGS FROM THE FINAL REPORT ON PHASE 2 OF NCHRP PROJECT 12-7, "EFFECTS OF WELDMENTS ON FATIGUE STRENGTH OF STEEL BEAMS," ARE REPORTED. THE PRINCIAPL DESIGN VARIABLES INCLUDED THREE TYPES OF STEEL, VARIOUS STRESS CONSIDERATIONS, AND VARIOUS DESIGN DETAILS. DURING THE STUDY 69 WELDED BEAMS AND GIRDERS WITH TRANSVERSE STIFFENERS WERE TESTED, PROVIDING DATA ON 118 STIFFENER DETAILS. THE STIFFENERS WERE EITHER WELDED TO THE WEB ALONE OR WERE WELDED TO BOTH THE WEB AND THE FLANGES. FIFTY-SIX WELDED BEAMS WERE TESTED WITH ATTACHMENT PLATES WELDED TO THE TENSION AND COMPRESSION FLANGES. THE VARIABLES IN THE STUDY OF ATTACHMENT FATIGUE LIFE WERE LENGTH OF ATTACHMENT, STRESS, AND TYPE OF WELD DETAIL. THE RESULTS OF PHASE 2 CONTINUE TO CONFIRM THAT STRESS RANGE ALONE IS THE ONLY SIGNIFICANT FACTOR FOR DESIGNING A GIVEN DETAIL AGAINST FATIGUE. MINIMUM STRESS AND TYPE OF STEEL DID NOT SIGNIFICANTLY AFFECT THE FATIGUE STRENGTH OF BEAMS WITH TRANSVERSE STIFFENERS OR ATTACHMENTS.

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    Transportation Research Board

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  • Publication Date: 1973-3

Media Info

  • Media Type: Digital/other
  • Features: Figures; Tables;
  • Pagination: 13 p.
  • Serial:
  • Publication flags:

    Open Access (libre)

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Filing Info

  • Accession Number: 00217314
  • Record Type: Publication
  • Report/Paper Numbers: Digest
  • Files: TRIS, TRB
  • Created Date: May 29 1973 12:00AM