广畅国际大厦磁流变和粘滞阻尼器抗震分析

Aseismic analysis of Guangchang International Center with the MR and viscous dampers

针对上海广畅国际大厦的抗震问题,通过对不同控制装置的优缺点和适用范围进行比较分析后,采用磁流变阻尼器和粘滞阻尼器相结合的方式,探讨了该结构在无控和安装控制装置后在地震作用下的动力响应和控制效果。文中通过建立结构的力学模型,首先分析了无控结构的动力特性;此后分析了无控结构以及安装磁流变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。分析结果表明,采取磁流变阻尼器以及粘滞阻尼器相结合的方式,能够有效地控制该结构在地震作用下的响应。

Aseismic analysis of Guangchang Intemational Center with both MR damper and viscous dampers in Shanghai is performed in this paper.The dynamic responses of the uncontrolled structure and the structure with MR dampers and viscous dampers are investigated.In this study,the analytic model of the structure is firstly estab- lished.Then,the dynamic responses of the uncontrolled and controlled structures are investigated under the excita- tion of earthquake.The analysis results indicate that the responses of the structure can be significantly reduced with the installation of the MR and viscous dampers.