Semi-active Seismic Isolation System with Controllable Friction Dampers Using Piezoelectric Actuators
Semi-active Seismic Isolation System with Controllable Friction Dampers Using Piezoelectric Actuators
复制标题
使用压电执行器的带有可控摩擦阻尼器的半主动隔震系统
DOI：
10.1299/jee.2.215
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
T. Fujita
中科院分区：
文献类型：
--
作者：
E. Sato;T. Fujita
采用可控摩擦阻尼器的半主动隔震系统与被动隔震系统相比，可以减小地震反应的加速度和位移，但在强震作用下存在阻尼器失效的问题。为了解决这一问题，本研究开发了一种新型的可控摩擦阻尼器与故障安全机制。对于阻尼器，压电驱动器，使机构简单。该执行器结构紧凑，响应速度快，产生的力大。对采用摩擦阻尼器的半主动控制系统进行了仿真和激振试验，结果表明，与采用常规摩擦阻尼器的半主动控制系统相比，摩擦阻尼器具有良好的减速度和位移性能，且系统的可靠性更高。
Semi-active seismic isolation systems using controllable friction dampers had been proposed to reduce response accelerations and displacements comparing with those of passive systems, although they had a problem that the dampers might fail to generate damping forces due to malfunctions in strong earthquakes. To solve the problem, a new type of controllable friction damper with a fail-safe mechanism was developed in this study. For the damper, piezoelectric actuators were used to make the mechanism simple. The actuators are compact, and can make quick responses and produce large forces. Simulations and excitation tests were carried out for the semi-active system using the friction dampers, showing good performance in reduction of response acceleration and displacement together with higher reliability comparing with systems using conventional friction dampers.