RETROFITTING PROCEDURES FOR FATIGUE-DAMAGED FULL-SCALE WELDED BRIDGE BEAMS

Bridge beams on the east and westbound bridges of span No. 1 at Yellow Mill Pond in Bridgeport, Connecticut, were inspected for fatigue cracking and then retrofitted, using either the peening or the gas tungsten arc remelting procedures. The retrofitted beams were then subjected to fatigue strength tests. The results indicated that both procedures could be used to successfully extend the fatigue life and prevent further crack growth. Only details with initial crack depths greater than 1/8 inch did not achieve the desired life increments. For details with very small or no visible crack, the peening procedure appears to provide a reliable and the most economical means of retrofitting fatigue damage; for details with slightly larger cracks (up to 3/16 inch deep) the gas tungsten arc remelt process is preferred.

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  • Corporate Authors:

    Transportation Research Board

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  • Authors:
    • Fisher, J W
  • Publication Date: 1978-4

Media Info

  • Media Type: Digital/other
  • Features: Figures; References; Tables;
  • Pagination: 7 p.
  • Serial:
  • Publication flags:

    Open Access (libre)

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Filing Info

  • Accession Number: 00177108
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Jun 28 1978 12:00AM