摘要
防灾科技学院学生及教师科技研发中心项目位于高烈度区,为提高结构抗震安全性,满足建筑功能使用要求,项目采用消能减震体系,共布置88个黏滞消能器。采用ETABS空间分析程序,通过不同水准地震作用下的结构弹性和弹塑性分析,得到消能减震结构的楼层剪力、层间位移角、能量耗散、塑性发展等,对该结构体系的抗震性能进行综合评价。结果表明,结构整体和关键构件均满足设计要求,结构抗震性能良好;设置消能器的减震效果明显,多遇地震下消能器提供7.8%附加阻尼比,罕遇地震下消能器提供2.6%附加阻尼比,结构滞回提供2.1%附加阻尼比;罕遇地震作用下,结构整体损伤状态属于中等破坏,满足"大震不倒"设防目标。
The student and teacher scientific research center project of the Institute of Disaster Prevention is located in a high-intensity area.In order to improve the seismic safety of the structure,and meet building functional requirements,the project adopts an energy dissipation system and a total of 88 sticky energy dissipators.Based on the structural elasticity and elasto-plasticity analysis under different levels of earthquakes,using the ETABS spatial analysis program,the floor shear force,the angle of displacement between floors,energy dissipation,plastic development of the energy dissipation structure were obtained,and the seismic performance of the structural system was comprehensively evaluated.The results show that the overall structure and key components meet the design requirements,and the structure has good seismic performance.The vibration reduction effect of the installed energy dissipators is obvious.The energy dissipators provide 7.8%additional damping ratio under frequent earthquakes.The energy dissipators provide 2.6%additional damping ratio,and the structural hysteresis provides 2.1%additional damping ratio under rare earthquakes.Under the rare earthquakes,the damage state of the overall structure belongs to the medium damage,which meets the fortification target of"no collapse under strong earthquake".
作者
阮祎萌
安泽宇
RUAN Yimeng;AN Zeyu(Tianjin University Research Institute of Architectural Design,Tianjin 300050,China;Tianjin Municipal Engineering Design&Research Institute,Tianjin 300051,China)
出处
《建筑结构》
CSCD
北大核心
2020年第S01期400-404,共5页
Building Structure
关键词
抗震性能
消能减震
黏滞阻尼
弹塑性时程分析
seismic performance
energy dissipation
viscous damping
elastoplastic time history analysis
作者简介
阮祎萌,学士,高级工程师,一级注册结构工程师,Email:16745393@qq.com。
