Vibration of buildings under random wind loads

A method for analyzing the three dimensional dynamic response of wind-excited buildings is presented. The wind and building modes used in the analysis are similar to those used for analyzing along-wind response. The coupled along-wind, across-wind and torsional vibrations are computered using random vibration techniques. The expected maximum translational responses and the and the torsional response are obtained. The objectives of this study were to identify which wind and structural properties influence the torsional response and to determine whether the predicted torsional responses are large enough to warrant extending the method to building type structures. Only buildings with a rectangular cross section and normally incident wind were considered.