摘要
利用有限元软件sap2000建立了三巨层的巨-子型有控结构体系(MSCSS)有限元模型,并沿调频子结构高度方向的不同位置分别布置了附加黏滞阻尼器,对MSCSS进行了罕遇地震作用下的弹塑性时程分析,通过与巨型框架结构(MF)的对比,研究了不同工况下MSCSS的响应控制率、塑性铰分布规律和附加阻尼器的工作效率。结果表明:附加阻尼器的位置布置差异对MSCSS的动力特性有较大的影响,将附加阻尼器布置于调频子结构中部两层与两侧巨型柱之间时结构的动力响应控制效果最佳,且塑性铰的分布也更加合理;同时,采用这种布置方案的附加阻尼器耗能能力较强,阻尼器的工作效率也较高。
The finite element software SAP2000 is employed to establish a finite element model of Mega-Snb Con- trolled Structure System （MSCSS）, and some additional viscous dampers are installed in different positions in the height direction of the tuned-sub-structure respectively. Then the elastoplastic time history analysis of MSCSS sub- jected to rare earthquake is carried out. Comparing with the Mega Frame （MF） structure, the dynamic response control ratio, the plastic hinge distribution law and the additional damper work efficiency are analyzed. The results show that different arranging schemes of additional dampers have a great influence on the dynamic characteristics of MSCSS. Besides, the scheme that arranging additional dampers in the middle two stories between the tuned-sub- structure and the mega column in both sides has a significant dynamic response control effect. And the plastic hinge distribution is reasonable as well. Meanwhile, the energy dissipating capacity of the additional damper is remarka- ble, and its work efficiency is also high.
出处
《地震工程与工程振动》
CSCD
北大核心
2014年第2期180-186,共7页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金项目(51078311)
教育部博士点基金项目(20096102110018)
西工大基础研究基金项目(JC20110217)
关键词
巨-子型有控结构体系
黏滞阻尼器
布置方案
弹塑性时程分析
Mega-Sub Controlled Structure System （MSCSS）
viscous dampers
arranging scheme
elastoplastictime history analysis
