- Author
- Simiu, E. | Lozier, D. W.
- Title
- Buffeting of Tall Structures by Strong Winds. Building Science Series.
- Coporate
- National Bureau of Standards, Washington, DC
- Report
- NBS BSS 074, October 1975,
- Distribution
- Available from National Technical Information Service
- Keywords
- skyscrapers; wind pressure; gust loads; lateral pressure; buffeting; building codes; dynamic response; structural engineering; computer programs
- Identifiers
- tall buildings
- Abstract
- Certain shortcomings of current procedures for computing alongwind structural response have been shown to result in unrealistic estimates of tall building behavior under the action of strong winds. Differences between predictions of fluctuating response based on various such procedures may be as high as 200%. In recent years, advances in the state of the art have been made which provide a basis for significantly improved alongwind response predictions. The purpose of the present work is to present a procedure for calculating alongwind response which incorporates and utilizes these advances. The basic structural, meteorological and aerodynamic models employed are described, and expressions for the alongwind deflections and accelerations, consistent with those models, are derived. A computer program is presented for calculating the alongwind response of structures with unusual modal shapes or for which the contribution of the higher modes to the response is significant.