中国妇女活动中心酒店采用软钢和粘滞阻尼器减震控制分析

针对北京中国妇女活动中心酒店这一高烈度区特别不规则结构,研究了高层不规则结构减震理论,提出了采用软钢阻尼器和粘滞阻尼器两种消能减震装置,对该结构在无控和有控制后在地震作用下的动力响应和控制效果进行研究。文中,通过建立结构的力学模型,首先分析了结构的动力特性;然后,分别从能量、变形和力三个方面对比了无控结构及安装了软钢阻尼器和粘滞阻尼器的结构在多遇地震以及罕遇地震作用下的动力响应。结果表明:在较宽的地震波频带内,两种阻尼器对于控制这一不规则结构的扭转效应,提高该结构的整体抗震性能均有较好的减震效果。相对粘滞流体阻尼器而言,软钢阻尼器控制结构水平加速度效果较好;而粘滞流体阻尼器在控制结构水平位移性能稍好。

Vibration Control Analysis of China Women Activity Center's Hotel with Metallic and Viscous Damper

Aseismic analysis of China Women Activity Center Hotel in Beijing , which is one special non-regular out-of-codes high-rise building in high earthquake intensity zone, is peoCormed in this paper. The dynamic response of the uncontrolled structure and controlled structure with metallic darners and viscous dampers are investigated. In this study, the analytic model of the structure is firstly established. Then, the dynamic response of the uncontrolled structure and controlled structure are intestigated under the excitation of earthquake from three aspects of energy, displacement and force. The analysis result indicates that in a wide vibration frequency range, the rotaion displacement of the structare is significantly reduced with the installtion of metallic damper and viscous damper. And the metallic damper is better in controlling the horizontal accelaration response, viscous damper is prior in controlling the horizontal displacement.