This paper presents and discusses the dynamic testing of a simple span, curved, steel box beam bridge having two boxes with intermediate diaphragms and a composite concrete deck. An equivalent HS20-44 truck crossed the bridge at designated speeds in three established lanes. Oscillograms and FM analog tape recorded strain and deflection from gages on each of the steel boxes, one end-diaphragm, one mid-diaphragm, four tie-down rods, and the concrete walk and parapet. The discussion includes box rotations and distortions, web behavior, frequencies and damping, impact factors, bridge accelerations, maximum stresses and deflections of boxes, diaphragms, and tie-down rods, and the distribution of the total moments to each box. /FHWA/

  • Supplemental Notes:
    • This report was prepared in cooperation with the Massachusetts Department of Public Works and the University of Rhode Island and is part of the study entitled Horizontally Curved Highway Bridges.
  • Corporate Authors:

    Federal Highway Administration

    Office of Research and Development, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Armstrong, W L
    • Langdon, J A
  • Publication Date: 1973-2

Media Info

  • Pagination: 118 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00179458
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-RD-73- 1 Final Rpt., FCP 25G4-072
  • Files: TRIS, USDOT
  • Created Date: Aug 27 1978 12:00AM