(北京市建筑设计研究院有限公司， 北京 100045)

［摘要］北京CBD核心区文化设施建筑功能复杂，主体结构为钢框架-支撑结构体系。由于存在竖向构件局部转换和局部抽柱形成大空间，多层楼板设较大洞口，东、西楼局部连体，以及平面不规则和竖向不规则等多项抗震超限内容，为超限项目。考虑项目结构体系特点，对项目进行了屈曲约束支撑设计，通过软件进行弹塑性时程分析对比，比较了采用屈曲约束支撑方案相比于普通支撑方案在结构上的优势。结果表明，采用屈曲约束支撑较普通支撑在基底地震力输入、顶点位移、塑性铰发展、保护关键构件等方面均起到重要的作用，优化了结构抗震能力，使普通支撑方案难以实现的结构布置得到实现。 

［关键词］钢框架-支撑结构体系；屈曲约束支撑；超限连体结构；弹塑性时程分析 

中图分类号：TU318 文献标识码：A文章编号：1002-848X(2021)13-0132-07

Application of buckling restrained braces in seismic resistance of over-limit connected cultural facilities 

WU  Jiong,  CHANG  Weihua,  GONG  Zhenchao,  WANG  Guohua,  YANG  Weibiao 

(Beijing Institute of Architectural Design Co., Ltd., Beijing 100045， China) 

Abstract: The Beijing CBD cultural facilities has complex architectural functions. The main structure system applied steel frame-bracing structure system. Since structure suffered seismic features beyond seismic codes, like the local transfer of vertical members, partial deletion of columns for larger space, multi-storey floor has large openings, links between east and west tower in certain floors, irregular plane and vertical arrangement, the project is classified as over-limit seismic project. Considering the characteristics of the structural system of the project, buckling restrained braces were adopt in design. The elasto-plastic time-history analysis and comparison were carried out through the software, and the structural advantages of the scheme with buckling restrained braces was compared with scheme with normal braces. The result revealed that comparing with normal braces, adopting buckling restrained braces has essential profits in base seismic force input, top drift, plastic hinge development and critical member protection, and optimized the structural seismic resistance capacities. The buckling restrained braces plan fulfilled request of complex structural layout which was difficult for normal braces structural system. 

Keywords:steel frame-bracing structure system； buckling restrained braces； over-limit connected structure； elasto-plastic time-history analysis

作者简介：吴炅，硕士，工程师，Email:429387940@qq.com。