COVARIANCE PROPER TRANSFORMATION-BASED PSEUDO EXCITATION ALGORITHM FOR WIND-INDUCED RESPONSES OF HIGH-RISE BUILDINGS

A covariance proper transformation-based pseudo excitation approach (CPT-PEA) is proposed in this paper at first for predicting the wind-induced random vibration responses of high-rise buildings. The wind-induced random responses of a super high-rise building 492m in height are then computed group by group in wind loads by using the proposed CPT-PEA algorithm and combined with SRSS method. The input grouping stochastic wind loads are obtained through a rigid model wind tunnel test of grouping-synchronous pressure measurement in conjunction with the numerical integrating technique of pressure. The final comparisons of the computed responses with those gained via a wind tunnel test of aeroelastic model and computed by using traditional frequency-domain CQC approach demonstrate the feasibility of the proposed CPT-PEA and the SRSS combination method.