双向水平地震作用下串联隔震结构的振动控制  

Vibration Control for Serially Connected Isolated Structures Subject to Two-directional Horizontal Earthquake

作　　者：杜永峰[1,2] 林治丹[2] 

机构地区：[1]西部土木工程防灾减灾教育部工程研究中心,甘肃兰州730050 [2]兰州理工大学防震减灾研究所,甘肃兰州730050

出　　处：《工程抗震与加固改造》2010年第4期32-37,共6页Earthquake Resistant Engineering and Retrofitting

基　　金：国家自然科学基金(50778087)

摘　　要：国内外许多实际的隔震工程都采用橡胶隔震支座与地下室悬臂柱串联的隔震方案。本文针对串联隔震结构提出了振动控制策略,即在隔震层附设一定数量的减震控制装置,同时,本文建立了在双向水平地震作用下串联隔震结构振动控制体系的运动方程,并考虑了串联隔震结构底部柔性对底部刚度的影响,应用序列最优控制算法对算例进行隔震控制。结果表明,这种隔震控制体系可以有效地减小结构在双向水平地震作用下的地震反应,对隔震层的位移响应降低了至少63.1%,有效地提高了串联隔震结构体系的整体稳定。The structure that the rubber isolation pad is connected with the cantilever column is often used at home and abroad.In this paper,a vibration control strategy for serially connected isolated structures is proposed.That is control devices are installed at the isolation level.The equation motion of the vibration control system to the serially connected isolated structures subjected to two-directional horizontal earthquake is established,and the effect which the flexibility of the bottom in the serially connected isolated structures to the stiffness is considered.Sequential Optimal Control algorithm is used to control the example.The results show that the isolated control strategy is very effective in reducing structure seismic response under the two-directional horizontal earthquake,and the movent of isolation layer is reduced at least 63.1%.So the wholly stability of structure can be improved effectively.

关 键 词：串联隔震结构 振动控制 序列最优控制 

分 类 号：TU352.12[建筑科学—结构工程]