上海市某既有学校建筑消能减震加固设计  

Seismic energy dissipation reinforcement design of an existing educational building in Shanghai

作　　者：陈泽赳 张晓光 周志刚 桑海刚 CHEN Zejiu;ZHANG Xiaoguang;ZHOU Zhigang;SANG Haigang(East China Architectural Design&Research Institute Co.,Ltd.,Shanghai 200002,China;Shanghai Tongji Xieli Construction Engineering Consulting Co.,Ltd.,Shanghai 200092,China;Shanghai Tongcheng Construction Technology Engineering Co.,Ltd.,Shanghai 200092,China;Shanghai Zhuzhi Architectural Design Consulting Co.,Ltd.,Shanghai 200092,China)

机构地区：[1]华东建筑设计研究院有限公司,上海200002 [2]上海同济协力建设工程咨询有限公司,上海200092 [3]上海同程建设科技工程有限公司,上海200092 [4]上海筑致建筑设计咨询有限公司,上海200092

出　　处：《建筑结构》2022年第S01期2018-2024,共7页Building Structure

摘　　要：介绍了消能减震技术在某既有学校改造设计中的应用。该学校建于1997年,为单向框架结构,抗侧抗及扭刚度偏弱,配筋及构造不足,拟采用设置屈曲耗能支撑及黏滞阻尼器(墙)的消能减震设计。通过等效弹性迭代计算和小震时程分析,黏滞阻尼器(墙)工作状态良好,可有效发挥其耗能作用,可为主体结构提供5%左右的附加阻尼比。运用SAUSAGE软件对结构进行多遇、设防、罕遇地震下的时程分析及结构损伤评定,论证了设置消能减震构件的有效性及结构抗震安全性。设置减震构件后,消能子结构的受力有所增加,柱轴力显著增大,但其他位置的受力和配筋大幅减小,具有良好的经济效益。This paper introduced the application of energy dissipation technology in the reconstruction design of an existing school.The school,which was built in 1997,is a one-way frame structure with weak lateral and torsional stiffness and insufficient reinforcement and seismic measures.It is proposed to adopt the energy dissipation design with buckling-restrained braces and viscous damper(wall).Through equivalent elastic iterative calculation and small earthquake time history analysis,the viscous damper(wall)works well,can effectively play its energy dissipation role,and can provide an additional damping ratio of about 5%for the main structure.The time history analysis and structural damage evaluation of the structure under frequent,fortified and rare earthquakes are carried out by using the software SAUSAGE,and the effectiveness and seismic safety of setting energy dissipation and damping components are demonstrated.After setting the damping members,the stress of the energy dissipation substructure increases,and the column axial force increases significantly,but the stress and reinforcement at other positions decrease greatly,which has good economic benefits.

关 键 词：消能减震技术 黏滞阻尼器 屈曲约束支撑 改造加固 

分 类 号：TU746.3[建筑科学—建筑技术科学] TU352.1