In designing high-rise buildings, their seismic performances have been evaluated mainly in terms of maximum values of seismic responses such as story drifts and ductility factors obtained by time history analyses. When seismic actions containing long period components are concerned, cumulative response values including plastic deformations and/or plastic strain energy responses should be highlighted in addition because the durations of the ground motions are much longer.
Results of a series of time history response analyses of a high-rise building with steel structures for seismic actions with long-period components are shown in this paper. Based on the results, a method for evaluating seismic performances by selecting both the maximum and cumulative responses as the criteria is proposed adopting energy-balance based earthquake resistant design procedure.
