缓冲限位滞变-摩擦隔震系统的理论恢复力模型研究

摘要

In this paper,for the hysteretic-friction system with elastic-plastic displacement-constraint device, the theoretical restoring force model is put forward based on summary the pseudo static tests, and the motion equation of the isolation system is established. Through the comparison on the nonlinear time history analysis and test results, the correction of the theoretical restoring force mode is proved. Through the main shock and aftershock analysis,the results indicate that the displacement-constraint device not only can keep the upper structure safety, but also can effectively limit the displacement of the isolation layer, meanwhile can supply secondary protection under macro-aftershock. The research of this paper can provide reference for design and application of the isolation system.%针对弹塑性缓冲限位装置与滞变-摩擦隔震装置并联的隔震系统,在总结试验结果的基础上,提出了隔震系统的理论恢复力模型,建立了系统的运动方程；通过与非线性时程分析及试验结果的对比,验证了理论恢复力模型的正确性；通过主、余震作用下的地震反应分析,表明该限位装置在确保上部结构安全的同时,能够有效地限制隔震层的位移,并起到较强余震作用下的二次保护作用.本文的研究可为相应隔震体系的设计和工程应用提供依据.