Dynamic response analysis of story-adding structure with isolation technique subjected to near-fault pulse-like ground motions

The isolation technique is widely studied and applied in structural engineering due to its excellent seismic performance. However, the existing research mostly focuses on conventional structure under action of regular ground motions. In this paper, a story-adding structure, base-isolated isolated were simulated by using numerical simulation methods. dynamic response characteristics three structures near-fault pulse-like motions are analysed compared with far-fault results showed that base can significantly extend period main reduce upper structure. inter-story drift ratio, shear force, story acceleration all near-field larger than far-field earthquakes. Both damping Besides, properties better