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DOI:10. 7672/sgjs2016140094
施工技术
CONSTRUCTION TECHNOLOGY
2016年7月下第45卷第14期
罕遇地震作用下某超高层框架-核心筒结构混合
减震控制研究*
唐成，陈臻颖王龙3，张永山，汪大洋
（1.广州大学土木工程学院，广东广州510006；2.广州市第二建筑工程有限公司，
广东广州510045；3.广州市建筑集团有限公司，广东广州510030）
[摘要】针对某293.2m超高层框架-核心筒结构，建立了PERFORM-3D三维弹塑性有限元分析模型，在罕遇地震作用下进行了弹塑性动力时程分析，对比了原结构和混合减震控制结构的层间位移角、基底剪力和结构性能水准，分析了消能构件的滞回耗能特性。结果表明：所建的有限元模型有较高的准确性：混合减震控制结构层间位移角计算结果均<1/100，满足规范要求：防屈曲支撑（BRB）和黏滞阻尼器（FVD)均充分发挥了耗能特性：肘时节式安装形式黏滞阻尼器具有放大黏滞阻尼器输出位移的特性；罕遇地震作用下，大量梁发生弯曲届服，剪力墙和框架柱均处于弹性状态。
【关键词］】高层建筑；钢结构；地震；框架-核心筒；弹塑性分析；减震控制
［中图分类号］TU393.3
【文献标识码］A
【文章编号】1002-8498（2016）14-0094-06
StudyonHybridVibrationControl ofthe Super-high-rise Frame-core Tube Structure Under Rare Earthquake
Tang Cheng',Chen Zhenying’,Wang Long',Zhang Yongshan',Wang Dayang(1. School of Ciril Engineering, Guangzhou Uniersity, Guangzhou,Guangdong 510006, China; 2. Guangzhou Second Construction Engineering Co. , Lid. , Guangzhou, Guangdong 510045, Chind
3.Guangzhou Construction Group Co., Ltd., Guangzhou,Guangdong510030, China)
Abstract:Vibration control of a 293.2m super-high-rise frame-core tube building was studied here.The three-dimensional finite element of super-high-rise frame-core tube building was built by PERFORM-3D program. The time history analysis method is used in elastic plastic analysis for a super-high-rise frame-core tube.Story drift，base shear，and structural performance index of uncontrolled structure and controlled structure are compared. Hysteretic energy dissipation characteristic of buckling restrained brace(BRB) and dampers are analyzed. The results show that: finite element modal established has high accuracy; controlled structure's story drift is less than 1/100, which satisfy the demand of code; BRB and dampers give a full play in hysteretic energy dissipation characteristic; and herringbone connection viscous dampers can amplify dampers' displacement; a portion of the beam is flexural yield, and Shear wall and frame column stay elastic state.
Key words: tall buildings; steel structures; earthquake; frame-core tube; elastic-plastic time history analysis; hybrid energy dissipation
本文针对某超高层框架-核心筒结构，使用非线性软件PERFORM-3D对其进行有限元模型的建立，并对其进行弹塑性分析。研究原结构和混合减震
*国家自然科学基金（51408140；51378135）：教育部博士点基金 20134410120003）；广州市属高校羊城学者项目（1201581632）：广东省优秀青年教师培养计划（Y9201402）
[作者简介］唐成，硕土研究生，E-mail；506960449@qq-com【收稿日期】2016-02-01
结构在罕遇地震作用下的动力时程响应，对比基底剪力和层间位移角，分析黏滞阻尼器和防屈曲支撑
的耗能情况和结构中各构件的性能水准。工程概况
某64层超高层结构，高度293.20m，平面尺寸 42m×42m；核心筒位于整个结构的中心，其尺寸为 19.8m×20.2m。结构标准层平面如图1所示。结