EVERGREEN POINT BRIDGE MAINTENANCE PROBLEMS

The 1974-79 study of the maintenance problems of the drawspan mechanism of the Evergreen Point Bridge across Lake Washington is reported. The approach was to predict the life of elements by Miner's hyposthesis. For this the strains at critical points and the wind vector were measured over two sessions. These results were correlated with long term wind data to provide the number of cycles in a year at various stress levels. The fatigue capacity of anchor rods was determined by the Prot test on six specimens. The resulting S-N curve was compared to the field measurements to determine the expected life of the rods from the Miner criterion. The methods developed provide useable maintenance procedures for the prevention of fatigue failure of critical structural elements. (Author)

• Record URL:
  http://www.wsdot.wa.gov/research/reports/fullreports/044.1.pdf
• 
• Corporate Authors:

  University of Washington, Seattle

  Seattle, WA  United States  98195

  Washington State Department of Highways

  Highway Administration Building
  Olympia, WA  United States  98501

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Brown, C B
• Publication Date: 1980-9

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 39 p.

Subject/Index Terms

• TRT Terms: Anchor bolts; Failure; Maintenance; Movable bridges; Strain (Mechanics); Stresses; Wind
• Old TRIS Terms: Strains
• Subject Areas: Bridges and other structures; Design; Highways; Maintenance and Preservation; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00342382
• Record Type: Publication
• Report/Paper Numbers: WA-RD-44.1 Final Rpt.
• Contract Numbers: Y-1640
• Files: TRIS, USDOT, STATEDOT
• Created Date: Dec 22 1981 12:00AM