地震作用下建筑物内重要设备半主动减震控制  

Semi-active control of indoor important equipments under earthquake excitation

作　　者：刘海卿[1] 杨雪[2] 李忠献[1] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]辽宁工程技术大学土木建筑工程学院,辽宁阜新123000

出　　处：《自然灾害学报》2006年第2期160-163,共4页Journal of Natural Disasters

基　　金：国家自然科学基金资助项目(50178047);辽宁省教育厅科研项目(2004D245)

摘　　要：为了有效地减小重要设备在地震荷载作用下的动力反应,提出了使用磁流变阻尼器进行半主动控制。首先分析了减震器的本构模型,建立了主体结构的动力方程,以设备的相对位移和相对加速度作为控制变量,提出了相应的半主动跟踪控制算法。数值分析表明,安装磁流变阻尼器的设备的加速度和相对位移显著减小,因而能保证重要设备的正常使用。In order to reduce the dynamic response of indoor important equipment to seismic excitation, semi-active control using megnetorheological（MR） damper was presented. At first, the constitutive model of the damper was analyzed and the dynamic equation of the primary structure was formulated. Taking relative displacement and acceleration of the equipment as the controlling variables, corresponding tracing control algorithm was given. Numerical results show that the acceleration and relative displacement of equipment mounted with MR damper are decreased considerably, therefore, the MR damper is an effective seismic control device.

关 键 词：半主动控制 设备 磁流变阻尼器 框架结构 

分 类 号：TU352.1[建筑科学—结构工程]