摘要
为研究钢框架-混凝土核心筒结构体系上装设非线性液体粘滞阻尼器的减震控制问题,以某典型的高层建筑实际工程为背景,分别考虑将阻尼器装设在外框架上和装设在外框架与核心筒之间这两种方式,并改变阻尼器的安装位置及数量,拟定5种布置方案,采用SAP2000程序建立计算模型,输入3条地震波进行时程分析,并与原结构对比分析减震效果。结果表明:钢框架-混凝土核心筒结构体系上装设非线性液体粘滞阻尼器后,可取得明显减震效果;将阻尼器装设在外框架与核心筒之间的比装设在外框架上的减震效果好;通过合理布置,装设较少的阻尼器也能达到较理想的减震效果。
To study the vibration control of the steel frame-concrete core wall structural system using nonlinear fluid viscous dampers, a typical high-rise building with and without dampers was modeled and analyzed, using SAP2000 program, in which, besides the case without dampers, 5 layouts of dampers used in the structure were considered, including different ways of dampers＇ installation, i. e. , installation of dampers between the frame and core wall or only in the outer frame, as well as the floor levels of their installation and their numbers, and then, time-history analyses were performed under 3 inputs of earthquake records, respectively, and their seismic re- sponses were compared each other. The results show that the use of nonlinear fluid viscous dampers for the steel frame concrete core wall structural system results in obviously reduced seismic responses of the structure, comparing with the case without dampers; the dampers installed between the frame and core wall have the better effect of seismic vibration control than that installed only in outer frame; the reasonable arrangement of dampers is important when using them effectively for the purpose of seismic vibration control of such structural system.
出处
《防灾减灾工程学报》
CSCD
北大核心
2013年第5期524-529,共6页
Journal of Disaster Prevention and Mitigation Engineering
基金
北京市教育委员会科技计划重点项目(KZ201010005007)资助
关键词
钢混凝土混合结构
粘滞阻尼器
减震控制
高层建筑
steel-concrete mixed structure
viscous damper
vibration reduction and control
high-rise building
