SUSPENSION BRIDGE VIBRATIONS: COMPUTED AND MEASURED

Measured frequencies of a suspension bridge were found to differ from those calculated by a wide margin. The discrepancies were found to be caused by sliding deck joints not sliding at small amplitudes, which affected the stiffness. When these and other minor effects were correctly modeled the agreement was excellent. Lateral-torsional coupled motion caused by a channel type cross-section was found to influence the position of the center of rotation, which has an effect on the aerodynamic behavior. Measured values of structural dampling are given, and a comparison is made between "approximate" and "exact" methods of computing natural frequencies and mode shapes. /Authors/

  • Corporate Authors:

    American Society of Civil Engineers

    345 East 47th Street
    New York, NY  USA  10017-2398
  • Authors:
    • BUCKLAND, P G
    • Hooley, R
    • Morgenstern, B D
    • Rainer, J H
    • Van Selst, A M
  • Publication Date: 1979-5

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 859-874
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00195611
  • Record Type: Publication
  • Report/Paper Numbers: ASCE 14557 Proceeding
  • Files: TRIS
  • Created Date: Sep 29 1979 12:00AM