Wind induced vibrations of buildings and structures

Fluctuating forces and pressures on bluff bodies in the natural wind may arise from several mechanisms including turbulence or gustiness in the free stream flow (buffeting) unsteady flow around and behind the body (vortex shedding) and the oscillation of the structure itself. These phenomena do not always occur in isolation and often more than one mechanism may contribute to the response of a body. The wind induced forces and responses are conventionally resolved into two orthogonal directions these may be parallel (along wind or drag) and perpendicular (cross wind or lift) to the mean wind direction, or parallel and perpendicular to a direction related to the geometry of the body. This lecture is concerned primarily with the identification of along wind and cross wind excitation mechanisms, and with the effects of the fluctuating loads on buildings and structures.

• Authors:
  • Kwok, K C
• Publication Date: 1981-5

Language

• English

Media Info

• Pagination: 7.1-43

Subject/Index Terms

• TRT Terms: Aerodynamics; Box girders; Bridges; Cantilevers; Damping (Physics); Loads; Mathematical models; Structures; Vibration; Wind
• ATRI Terms: Aerodynamics; Box girder; Bridge; Building; Cantilever; Damping; Load; Modelling; Vibration; Wind
• Subject Areas: Bridges and other structures;

Filing Info

• Accession Number: 01421478
• Record Type: Publication
• Source Agency: ARRB
• Files: ATRI
• Created Date: Aug 24 2012 10:29AM