FIELD DYNAMIC STUDIES OF A LONG-SPAN SIGN STRUCTURE

A field study of a long-span, tubular signal bridge, very susceptible to wind-induced vibration, is described. Portions of a theoretical analysis performed by a recently developed computer program for the evaluation of "Wind Effects on Luminaires and Traffic Signals" (WEFFLS), were verified by field testing. The predicted resonant frequencies and lowest critical wind velocity--that wind velocity which will cause structure resonance--were confirmed by the tests. An in-situ value of structure damping, 0.2% of critical damping, was measured. /FHWA/

  • Availability:
  • Supplemental Notes:
    • Sponsored by DOT, Federal Highway Administration.
  • Corporate Authors:

    California Department of Transportation

    1120 N Street
    Sacramento, CA  USA  95814
  • Authors:
    • Nix, H D
    • Reinl, H
  • Publication Date: 1973-12

Media Info

  • Pagination: 50 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00165752
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • ISBN: 14030
  • Report/Paper Numbers: FHWA-RD-77-50632, FCP 40S1502
  • Contract Numbers: D-4-131
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Mar 7 1978 12:00AM