摘要
菏泽市牡丹人民医院门诊妇儿楼采用框架-剪力墙结构体系,按8度0.20g进行设计。为降低地震输入响应,减小结构最大层间位移角,提高其抗震性能并满足结构减震目标,采用消能减震技术——黏滞阻尼器(VFD)。采用YJK软件进行振型分解反应谱计算,ETABS振型分解反应谱(补充复核)、弹性时程和弹塑性时程分析计算;并将减震及非减震结构的结果进行对比分析。结果显示,采用该消能减震技术后,多遇地震作用下结构基底剪力和层间位移角的减震效果显著,满足结构既定附加等效阻尼比要求;时程法结构基底剪力减震率远高于反应谱法结构基底剪力减震率;罕遇地震作用下结构减震效果良好,弹塑性层间位移角满足规范及既定性能目标要求。
The outpatient building for women and children of Peony People’s Hospital of Heze city adopts frame-shear wall structural system,which was designed according to seismic fortification intensity 8th grade,seismic acceleration 0.20g.Energy dissipation technology-viscous fluid damper(VFD)was employed in order to reduce seismic input response,decrease maximum layer displacement angle,improve seismic performance and accomplish the vibration control of structure.YJK software was used to do the mode decomposition response spectrum calculation,ETABS mode decomposition response spectrum(supplementary review),elastic time history and elastoplastic time history analysis and calculation;and the results of seismic reduction structure and non-seismic reduction structure were compared and analyzed.The results show that after adopting the energy dissipation and seismic reduction technology,the damping effect of the base shear force and the interlayer displacement angle of the structure under frequent earthquakes is significant,which meets the requirements of the additional equivalent damping ratio of the structure;the base shear damping ratio of elastic time history analysis method is much higher than that of modal decomposition response spectrum method,and the seismic reduction effect is good under rare earthquake,and elastic-plastic layer displacement angle meets the demands of regulations and the established performance objectives.
作者
万墨罕
丁新海
温良剑
井彦青
姜永光
李娜
孙绍东
刘超
WAN Mohan;DING Xinhai;WEN Liangjian;JING Yanqing;JIANG Yongguang;LI Na;SUN Shaodong;LIU Chao(Qingdao Tengyuan Design Institute Co.,Ltd.,Qingdao 266100,China;Shanghai LANKE Building Damping Technology Co.,Ltd.,Shanghai 201106,China)
出处
《建筑结构》
CSCD
北大核心
2021年第22期37-42,共6页
Building Structure
关键词
消能减震
黏滞阻尼器
附加阻尼比
能量法
减震率
energy dissipation
viscous fluid damper
additional damping ratio
energy method
damping ratio
