文章基本信息

标题：Semi-active Seismic Isolation System with Controllable Friction Dampers Using Piezoelectric Actuators
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作者：Eiji SATO ; Takafumi FUJITA
期刊名称：Journal of Environment and Engineering
电子版ISSN：1880-988X
出版年度：2007
卷号：2
期号：2
页码：215-226
DOI：10.1299/jee.2.215
出版社：The Japan Society of Mechanical Engineers
摘要：Semi-active seismic isolation systems using controllable friction dampers had been proposed to reduce response acceleration and displacement compared with those of passive systems, although there was the 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 since piezoelectric actuators are compact, can produce quick responses and produce large forces. Several experiments were conducted to obtain the characteristics of the new controllable friction damper. Moreover, numerical simulations and excitation tests were carried out for the semi-active seismic isolation system using the new controllable friction damper, showing good performance in the reduction of response acceleration and displacement together with higher reliability and safety compared with systems using conventional controllable friction dampers.
关键词：Vibration Control;Seismic Isolation;Semi-active Control;Controllable Friction Damper;Piezoelectric Actuator;Excitation Test;Fail-Safe