巨型钢框架MR智能减震结构的地震反应分析  

Seismic Response Analysis of Vibration-Reduction Steel Mega-Frame Structure with MR Intelligent Dampers

作　　者：麦庆元[1] 韦树英[1] 

机构地区：[1]广西大学土木建筑工程学院,广西南宁530004

出　　处：《广西科学》2007年第1期70-73,共4页Guangxi Sciences

摘　　要：采用wilson-Θ法求解巨型钢框架MR智能减震结构运动方程,提出基于最优主动控制算法(LQR算法)的双出杆剪切阀式MR阻尼器的半主动控制算法,并选择普通巨型钢框架结构(主结构3层,次结构3层)和巨型钢框,用LQR算法和半主动控制算法分析最大地震反应及控制效果.结果表明,巨型钢框架MR智能减震结构比普通的巨型钢框架结构优越,MR阻尼器能够有效地减小主结构的地震反应.The wilson-Θ method is used to solve basic vibration equations of the vibration-reduction steel mega-frame structure with MR intelligent dampers. The semi-active control algorithm of the double pole shear valve mode MR damper is proposed, which is based on the optimal active control algorithm （LQR）. The uncontrolled steel mega-frame structure （3 stories in main structure, 3 stories insub-structure） and the vibration-reduction steel mega-frame structure with MR intelligent dampers are analyzed. The LQR algorithm and the semi-active control algorithm are separately employed to compute the maximal seismic responses and the vibration-reduction effect of the vibration-reduction steel mega-frame stucture. The results of simulated computation imply that the vibration-reduction steel mega-frame structure with MR intelligent dampers is much better than the uncontrolled steel mega-frame. The MR dampers can significantly reduce the seismic response of the main structure in the steel mega-frame structure.

关 键 词：巨型钢框架 MR阻尼器 半主动控制 

分 类 号：TU352.12[建筑科学—结构工程] TU311.3