摘要
本文以一栋8度设防框剪结构为例,介绍了使用粘滞阻尼器进行消能减震设计的方法。采用ETABS建立三维有限元结构模型,按照阻尼器的实际布置情况,附加了非线性Link(Damper)阻尼单元,输入7条适用于Ⅱ类场地的地震波进行时程分析,对比设置阻尼器前后的楼层剪力、层间位移角,按规范方法计算得到结构的附加阻尼比。分析表明,设置阻尼器后,结构楼层剪力、层间位移角显著减小,阻尼器耗能作用较明显。
Taking a frame-shear wall structure in 8 degree seismic subarea as an example,the method of using viscous dampers for energy dissipation and seismic absorption is introduced in this paper.A three-dimensional finite element model of the structure is established by ETABS,and elasto-plastic time-history analysis is carried on according to the physical dampers placements.The story shear force and inter-story drift angle with dampers are compared with those without dampers,and the additional damping ratio of the structure is calculated according to the code method.The analysis shows that the story shear force and inter-story drift angle are significantly reduced after the installation of dampers,and that the dampers have an obvious effect on the energy dissipation.
作者
董昆
周胜东
DONG Kun;ZHOU Shengdong(Xinjiang Architectural Design and Research Institute Co.,Ltd.,Urumqi 830002,China)
出处
《建筑结构》
CSCD
北大核心
2021年第S01期826-830,共5页
Building Structure
关键词
框架-剪力墙
消能减震
粘滞阻尼器
ETABS
frame-shear wall structure
energy dissipation and seismic absorption
viscous dampers
ETABS
作者简介
董昆,工程硕士,高级工程师,一级注册结构工程师,Email:xjdk517@163.com;通信作者:周胜东,硕士,高级工程师,Email:89413174@qq.com。
