NEHRP Clearinghouse

Commonality of Earthquake and Wind Analysis.
Cevallos-Candau, P. J.; Hall, W. J.
National Science Foundation, Washington, DC. Engineering and Applied Science., January 1980, 210 p.
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The common features of general dynamic analysis procedures employed for evaluating the effects of wind and earthquake excitation were investigated. A major goal was to investigate and develop a basis for generating response spectra for wind loading, which in turn would permit the use of modal analysis techniques for wind analysis in a manner similar to that employed for earthquake engineering. Random vibration techniques were applied for developing response spectra for wind loading. In order to generate wind response spectra, the wind loading is divided into two parts--a mean load treated as a static component and a fluctuating load treated as a dynamic component. The spectral representation of the wind loading constitutes a simple procedure for estimating the forces associated with the dynamic component of the gusting wind. Several illustrative examples are presented demonstrating the commonality.
Dynamic response; Buildings; Earthquake engineering; Earthquake resistant structures; Earthquakes; Gust loads; Wind pressure; Dynamic loads; Design; Dynamic structural analysis