WIND INDUCED OSCILLATION OF BRIDGE MEMBERS

BRIDGE MEMBERS THAT ARE SUSCEPTIBLE TO WIND-INDUCED OSCILLATION MAY EXPERIENCE SEVERE DAMAGE TO THEIR CONNECTIONS. IN THIS REPORT TWO TYPICAL EXAMPLES OF WIND DAMAGE TO BRIDGES, THE ONE WITH INCLINED PIPE HANGERS AND THE OTHER WITH H-SHAPED VERTICAL HANGERS, ARE ILLUSTRATED. STATISTICS GATHERED FROM INVESTIGATION OF 141 ARCH BRIDGES WITH LONGITUDINAL STIFFENING WHICH WAS UNDERTAKEN ON A NATIONWIDE SCALE BY THE MINISTRY OF CONSTRUCTION ARE ALSO INTRODUCED. WIND TUNNEL TEST RESULTS ON THREE MODELS WITH H-CROSS SECTIONS ARE REPORTED (AEROSTATIC AND NONSTEADY AERODYNAMIC FORCES, STROUHAL NUMBER, AND AEROELASTIC STABILITY). IT IS POINTED OUT THAT A STRUCTURE OF H-SECTION SHOWS SELF-EXCITED OSCILLATION AS WELL AS FORCED OSCILLATION BY VORTEX EXCITATION. IT IS ALSO INDICATED THAT SUBHARMONIC OSCILLATION MAY OCCUR IN STRUCTURE OF H-SECTION. /AUTHOR/

• Corporate Authors:

  Public Works Res Inst, Cm /Japan

  ,    
• Authors:
  • Okubo, T
  • Narita, N
• Publication Date: 1972

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 185-214
• Serial:
  • Publication of: Precast Concrete /UK/
  • Volume: 14
  • Publisher: Precast Concrete /UK

Subject/Index Terms

• TRT Terms: Arch bridges; Bridge members; Cross sections; Hangars; Longitudinal stiffeners; Oscillation; Wind; Wind tunnels
• Uncontrolled Terms: Model tests
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00209852
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 19 1973 12:00AM