TEMPERATURE DIFFERENTIAL OF SWINGSPAN BRIDGES

A STUDY PERFORMED TO DETERMINE THE TEMPERATURE DIFFERENTIAL OF THE TOP AND BOTTOM MEMBER OF ONE SIDE OF A SWINGSPAN BRIDGE IS DESCRIBED. THREE BRIDGES WERE USED IN THE STUDY. BRIDGE NO. 1 WAS AN EQUAL-ARM SWINGSPAN BRIDGE, BRIDGE NO. 2 WAS A TRUSS SWINGSPAN BRIDGE, AND BRIDGE NO. 3 WAS AN UNEQUAL-ARM SWINGSPAN BRIDGE. THE RESULTS INDICATE THAT FOR: (1) BRIDGE NO. 1 THERE WERE 144 OCCURRENCES OF A TEMPERATURE DIFFERENTIAL IN EXCESS OF 15F, (2) BRIDGE NO. 2 THERE WERE 37 OCCURRENCES IN EXCESS OF 15F AND 190 OCCURRENCES IN EXCESS OF 10F, AND (3) BRIDGE NO. 3 THERE WERE 93 OCCURRENCES IN EXCESS OF 15F. THESE RESULTS WOULD TEND TO INDICATE THAT PERHAPS THE DESIGN CRITERIA OF 10F DIFFERENTIAL FOR TRUSS SWINGSPAN BRIDGES AND 15F DIFFERENTIAL FOR OTHER TYPES OF SWINGSPAN BRIDGES SHOULD BE REVISED. /AUTHOR/

  • Record URL:
  • Supplemental Notes:
    • Hpr-1(6), LHD 66-1ST
  • Corporate Authors:

    Louisiana Department of Highways

    P.O. Box 44245, Capitol Station
    Baton Rouge, LA  USA  70804

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  USA  20590
  • Authors:
    • Rushing, H B
    • LeBlanc, E J
  • Publication Date: 1969-6

Subject/Index Terms

Filing Info

  • Accession Number: 00207915
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS, STATEDOT
  • Created Date: Sep 22 1994 12:00AM