北京鲜活农产品项目消能减震设计  

Energy-dissipated design of Beijing Fresh Agricultural Products Project

作　　者：于森林[1] 张盟[1] 李博宇[1] 王然[1] 束伟农[1] 

机构地区：[1]北京市建筑设计研究院有限公司,北京100045

出　　处：《建筑结构》2017年第8期64-68,86,共6页Building Structure

基　　金：中国建筑科学研究院;上海赛弗工程减震技术有限公司等大力支持

摘　　要：北京鲜活农产品项目为北京市重点项目,通过结构方案的优选,采用了混凝土框架结构体系+屈曲约束支撑及剪切型阻尼器结构形式。采用性能化设计,对结构进行了小震、中震分析,并采用MIDAS/Gen程序进行了罕遇地震作用下的弹塑性动力分析。计算分析结果表明,屈曲约束支撑及剪切型阻尼器的引入能有效降低结构的地震反应,很好地起到了第一道防线的作用。屈曲约束支撑及剪切型阻尼器的屈服先于主体结构屈服,从而耗散了地震能量,保护了主体框架结构,很好地起到了结构耗能"保险丝"的作用。Beijing Fresh Agricultural Products Project is the key project of Beijing City.Through the optimization of the structural schemes,it adopts the concrete frame structural system with buckling restrained braces and shear-typed dampers.Based on the performance-based design,the structure was analyzed under frequent and fortification earthquakes,and MIDAS/Gen program was used to carry out the elastic-plastic dynamic analysis under the rare earthquake.The calculation and analysis results show that the introduction of buckling restrained braces and shear-typed dampers can effectively reduce the seismic response of the structure,and can effectively play the role of the first line of seismic resistance.Buckling restrained braces and shear-typed dampers yield before the main body structure,which dissipates the seismic energy and protects the main frame structure.Buckling restrained braces and shear-typed dampers play a good role of ＂fuse＂in the structure energy dissipation.

关 键 词：屈曲约束支撑 剪切型阻尼器 性能化设计 混凝土框架结构 弹塑性动力分析 

分 类 号：TU352.1[建筑科学—结构工程]