Abstract: A highly efficient, convenient and accurate method,i.e。the pseudo-excitationmethod for analyzing the nonstationary responses of structures subjected to multi-piontevolutionary random seismic excitations is established.Both the traveiling wave effect cansedby limited earthquake wave speed and the arbitrary coherency between the structural groundjoints are taken into account.The cross-correlation items between the participant modes andbetween the excitations have been both included,so that this is a complete ...