巨型减振框架结构地震反应线性最优半主动控制  

Linear optimal semi-active control of earthquake response of vibration-absorption megaframe structure

作　　者：张敏[1] 

机构地区：[1]广西工学院土木建筑工程学院,广西柳州545006

出　　处：《广西工学院学报》2012年第2期1-6,25,共7页Journal of Guangxi University of Technology

基　　金：国家自然科学基金项目(59778040)资助

摘　　要：根据线性最优主动控制的原则,提出了同时控制位移、速度和加速度的最优主动控制策略,导出修正Riccati方程,由此利用磁流体阻尼器,对巨型减振框架结构的地震反应进行了半主动控制,表明该结构体系的半主动控制能显著地降低主框架的振动位移,能有效地降低主、次框架的振动加速度.Based on the principles of linear optimal active control, the algorithm of an optimal active control has been developed to command the structure displacement, velocity and acceleration simultaneously, and the revisal Riecati equation has been derived. Moreover, the earthquake response of vibration-absorption megaframe structure has been controlled semi-actively by means of magnetorheological damper. The result seems to indicate that the semi-active control may be more effectively suppress the vibration displacement response of the main frame, and more significantly reduce the vibration acceleration response of the main and the secondary.frame.

关 键 词：半主动控制 最优主动控制 磁流体阻尼器 巨型框架 线性最优主动控制 

分 类 号：TU311.3[建筑科学—结构工程]