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

隔震技术因其优异的抗震性能而被广泛研究并应用于结构工程。但是，现有研究主要集中在常规地震动作用下的常规结构。本文利用数值模拟方法对加层地震结构，基础隔震结构和加层地震隔离结构进行了模拟。分析了三种结构在近断层脉冲状地震动下的动力响应特性，并与远断层地震动进行了比较。结果表明，采用基础隔震可以显着延长主体结构的工期，并减少上部结构的地震响应。层间漂移率，层间剪切力，并且三个结构在近场脉冲状地震动下的故事加速度都大于远场地震。基础隔离结构和添加故事的隔离结构均显示出出色的阻尼性能。此外，基础隔震结构的阻尼性能要好于添加故事的隔震结构。