黏滞阻尼器耗能增效减震系统理论及试验研究  

Theoretical and experimental investigation on high-performance viscous damper

作　　者：何文福[1,2] 黄祥博 张强 许浩[1,2] 刘文光 HE Wen-fu;HUANG Xiang-bo;ZHANG Qiang;XU Hao;LIU Wen-guang(Department of Civil Engineering,Shanghai University,Shanghai 200444,China;Shanghai Nuclear Engineering Research&Design Institute‑Shanghai University Engineering Research Center on Seismic Isolation Technology of NPP Structure,Shanghai 200444,China)

机构地区：[1]上海大学土木工程系,上海200444 [2]上海核工程研究设计院-上海大学核电站隔震减震工程技术研究中心,上海200444

出　　处：《振动工程学报》2021年第5期879-888,共10页Journal of Vibration Engineering

基　　金：国家科技重大专项(2017ZX06002003);国家自然科学基金资助项目(51778355,51778356)。

摘　　要：鉴于传统消能减震系统在层间位移较小时耗能效率有限,介绍了一种带位移放大装置的黏滞阻尼器增效减震系统,可通过放大阻尼器的相对变形提升系统耗能能力。基于该系统变形受力特性构建了其耗能增效及高阶效应力学模型,发现在阻尼器拉伸和压缩变形过程中存在不对称现象,进一步讨论了模型参数对力学性能的影响规律。设计制作了试验模型,并完成了在正弦荷载的作用下的往复加载试验。通过对比试验结果与理论曲线验证了理论力学模型的正确性,并通过试验探讨了频率相关性与疲劳性能。最后针对某框架-剪力墙减震结构进行地震响应分析,结果表明较少数量的带位移放大装置的黏滞阻尼器增效减震系统可实现数倍普通阻尼器的增效减震效果。The energy dissipation efficiency of the traditional energy dissipation damping system is limited when the displacement between layers is small.This paper introduces a kind of enhanced damping system with a viscous damper with displacement amplifier,which can enhance the energy dissipation capacity of the system by amplifying the deformation of the damper.Based on the deformation and stress characteristics of the system,the energy dissipation and high order effect mechanical models are established,and there is an asymmetry in the process of stretching and compression deformation of the dampers,then the influence of model parameters on mechanical properties is further discussed.The experimental model is designed and manufactured,and the reciprocating loading test under sinusoidal load is completed.The correctness of the theoretical mechanical model is verified by comparing the experimental results with the theoretical curve,and the frequency correlation and fatigue performance of the displacement amplifying damper are discussed by experiments.Finally,the seismic response of a frame-shear wall damping structure is analyzed,and the enhanced damping system with a small number of viscous dampers with displacement amplifier can achieve several times the damping effect of regular dampers.

关 键 词：耗能减震结构 黏滞阻尼器 位移放大 性能试验 地震响应 

分 类 号：TU352.11[建筑科学—结构工程] TU398.2