AN ANALYSIS OF THE DYNAMIC CHARACTERISTICS OF A SUSPENSION BRIDGE BY AMBIENT VIBRATION MEASUREMENTS

Extensive experimental investigations were conducted on the Vincent-Thomas Suspension Bridge at Los Angeles Harbor to determine natural frequencies and mode shapes of vertical, torsional and lateral vibrations of the structure. These ambient vibration tests involved the simultaneous measurements of both vertical and lateral vibrational motions caused by traffic. Measurements were made at selected points on different cross sections of the stiffening structure. Comparison with previously computed mode shapes and frequencies shows good agreement with the experimental results, thus confirming both the accuracy of the experimental determination and the reliability of the method of computation.

  • Corporate Authors:

    California Institute of Technology

    Earthquake Engineering Research Laboratory
    Pasadena, CA  USA  91125

    National Science Foundation

    1800 G Street, NW
    Washington, DC  USA  20550
  • Authors:
    • Abdel-Ghaffar, A M
    • Housner, G W
  • Publication Date: 1977-1

Media Info

  • Pagination: 86 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00174690
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: EERL-77-01
  • Contract Numbers: NSF-ATA74-19135
  • Files: TRIS
  • Created Date: Mar 14 1978 12:00AM