(1 华南理工大学建筑设计研究院有限公司,广州 510641;2 华南理工大学土木与交通学院,广州 510640)

摘要: 粤海金融中心塔楼 A 地上建筑高度 284.0m,采用带一道伸臂桁架加强层的钢管混凝土柱钢框架+钢筋混凝土核心筒混合结构.其外框由 8 根柱距为 25.5m 的巨型钢管混凝土柱和四角悬挑约 11m 的钢梁组成,为超200m 高且仅有 8 根巨柱组成的带大跨度、大悬挑楼盖的框架-核心筒结构.为提高结构的抗侧刚度,在 38 层(避难层)设置一道伸臂桁架,与伸臂桁架相连的剪力墙内设置钢桁架.本项目存在扭转不规则、偏心布置、楼板不连续、含加强层等多项超限项,按照设定的性能目标,对结构进行弹性计算、中震验算,并采用 Perform-3D 软件进行了罕遇地震作用下的弹塑性动力时程分析,针对薄弱部位采取了有针对性的加强措施.结果表明:各项指标均满足规范要求,结构受力合理,安全经济.

关键词: 超限高层建筑;伸臂桁架加强层;大跨度;大悬挑;内嵌桁架

中图分类号:TU973,TU318 文献标志码:A 文章编号:1002-848X(2022)17-0066-06

DOI:10.19701 / j.jzjg.20212384

Design of out-of-code high-rise structure of Guangdong Holdings Limited BayContemporary Center

ZHAO Ying1,JIANG Yi1,2,WANG Song1,HUANG Yong1

(1 Architectural Design Research Institute of SCUT,Guangzhou 510641,China;2 School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,China)

Abstract: The above ground building height of tower A of Guangdong Holdings Limited Bay Contemporary Center is284.0m,and the hybrid structure of CFST steel frame + RC core tube with one outrigger truss reinforcement layer isadopted. Its outer frame is composed of 8 giant concrete-filled steel tubular columns with a column spacing of 25.5m andsteel beams with a cantilever of about 11m at the four corners. It is the frame-core tube structure with long span and largecantilevered floor,which is over 200m high and consists of only 8 giant columns. In order to improve the lateral stiffness ofthe structure,an outrigger truss is set on the 38 floor(refuge floor),and a steel truss is set in the shear wall connected withthe outrigger truss. There were many out of limit items in the project,such as irregular torsion,eccentric layout,discontinuous floor slab,including strengthened story and so on. According to the predefined performance objectives,elastic caculation and checking caculation under fortification earthquakes were conducted,and elastic-plastic dynamictime-history analysis under rare earthquakes was carried out by using Perform-3D software,targeted strengthening measureshad been taken for weak areas. The results show that all the indicators meet the requirements of the specification,thestructural force is reasonable,and it is safe and economical.

Keywords:out-of-code high-rise building;outrigger truss reinforcement layer;long span;large cantilever;embedded truss

∗企业横向科研基金项目(x2jzD8220290).

第一作者:赵颖,硕士,工程师,一级注册结构工程师,主要从事超高层、复杂建筑结构设计与研究,Email:591759868@ qq. com.

[引用本文] 赵颖,江毅,王嵩,等. 粤海金融中心超限高层结构设计[ J]. 建筑结构,2022,52(17):66-71. ZHAOYing,JIANG Yi,WANG Song,et al. Design of out-of-code high-rise structure of Guangdong Holdings Limited BayContemporary Center[J]. Building Structure,2022,52(17):66-71.