阻尼器套索连接平面外变形对高层建筑抗震性能影响分析
Analysis on the seismic impact of out-of-plane deformation of toggle-brace-damper on high-rise buildings
郭罗灿 1陈永祁 2李文斌 3洪金 4马良喆 2陈闯 1郑久建1
作者信息
- 1. 燕山大学建筑工程与力学学院,河北秦皇岛 006004
- 2. 北京奇太振控科技发展有限公司,北京 100037
- 3. 深圳市华阳国际工程设计股份有限公司,广东 深圳 518000
- 4. 中建三局集团华南有限公司,广东 广州 510445
- 折叠
摘要
当黏滞阻尼器采用套索连接布置时,可有效提高结构的附加阻尼比.为探讨套索连接平面外变形与结构抗震性能的关系,利用SAP2000建立子结构模型,分别设置平面外和控制平面外两种工况,研究单向地震作用下套索连接平面外变形对阻尼器力学性能的影响.结果表明:套索连接子结构发生平面外变形时,阻尼器有效刚度和耗能效率都降低.对于实际工程,套索平面外变形时,结构某方向的动力响应会加剧,且阻尼器产生弯矩力,不利于其正常工作,甚至超出限值.建议黏滞阻尼器采用套索连接布置时,施工过程可焊接高强度钢板来保证系统在面内工作.
Abstract
At present,liquid viscous dampers,arranged in high-rise and super high-rise buildings using lasso amplification devices,have been widely favored by owners.In order to explore the relationship between out-of-plane deformation of lasso connection and structural dynamic response,this paper uses finite element software SAP2000 to establish a sub-structural framework,simulate the planar working condition of lasso connection,and analyze the relationship between the noose plane and the effective stiffness of the damper when excitation by one-way seismic waves.In the actual engineering case,the out of plane deformation of the lasso connection under the action of unidirectional seismic wave is simulated,and the dynamic response of structures under different seismic conditions and different out of plane deformation is compared.The results show that when the lasso connecting substructure is deformed out of the plane when the unidirectional seismic wave is applied,the effective stiffness of the damper will be lost.For actual engineering cases,the noose connection occurs out of plane deformation,which will intensify the dynamic response in one direction,and the damper will also generate bending moment,which is not conducive to the normal operation of the damper or even exceeds the limit value.Therefore,it is recommended that when using a liquid viscous damper lasso arrangement,the construction process needs to weld high-strength steel plates to control the lasso system to work in the same plane.
关键词
套索子结构/平面外变形/有效刚度/液体黏滞阻尼器/高层建筑抗震Key words
lasso connection substructure/out-of-plane deformation/effective stiffness/liquid viscous damper/high-rise building earthquake resistance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据