The periodic foundation is a novel seismic isolation technology which uses the filtering characteristics of periodic structures. In order to solve the shortcomings of the existing attenuation mechanism, and to have a better attenuation effect on the main frequency band of ground motions, a periodic foundation based on the inertial amplification mechanism (IAPF) is proposed. The seismic mitigation performance of IAPF is studied by frequency response analysis. The sensitivity analysis and optimization of the interactive system which is composed of IAPF and superstructure are also carried out. The performance of the IAPF interactive system is compared with that of the interactive system composed of the local resonance periodic foundation and superstructure. The results show that IAPF does not require a large resonator mass to mitigate structural response. In addition, proper additional damping can significantly reduce the resonance peak and has negligible effect on the attenuation depth, which makes up for the shortcoming that the periodic foundation will amplify the response at the resonance peaks outside the attenuation zone to some extent.

周期性基础是一种新颖的地震隔离技术，它利用了周期性结构的过滤特性。为了解决现有衰减机制的不足，并对地震动主频段产生更好的衰减效果，提出了一种基于惯性放大机制（IAPF）的周期性基础。通过频率响应分析研究了IAPF的减震性能。还对由IAPF和上层建筑组成的交互式系统进行了灵敏度分析和优化。将IAPF交互式系统的性能与由局部共振周期基础和上部结构组成的交互式系统的性能进行了比较。结果表明，IAPF不需要较大的谐振器质量即可减轻结构响应。此外，适当的附加阻尼可以显着减小共振峰，并且对衰减深度的影响可忽略不计，弥补了周期性基础会在一定程度上放大衰减区外部共振峰处响应的缺点。