(1 湖南省建筑设计院集团股份有限公司, 长沙 410012; 2 湖南省建筑设计院集团股份有限公司新型复杂结构研究中心, 长沙 410012)

摘要: 长沙保利国际广场 B3 塔楼建筑高度 235m,采用混合框架-钢筋混凝土核心筒-伸臂桁架-带状桁架结构体系,属于结构不规则的高度超限结构。 采用 SATWE 和 ETABS 两种软件对塔楼进行弹性分析,并采用 PERFORM-3D 进行动力弹塑性时程分析,针对加强层、核心筒竖向收进、斜柱等重点部位采用了伸臂桁架贯通剪力墙、剪力墙中设置交叉钢筋暗撑、加强楼板构造等加强措施。 结果表明,塔楼各项指标均满足规范要求和预期抗震性能目标,结构安全可靠。

关键词: 超高层建筑; 混合结构体系; 伸臂桁架; 带状桁架; 倾斜外框柱

中图分类号:TU973 文献标志码:A 文章编号:1002-848X(2022)22-0040-06

DOI:10. 19701 / j. jzjg. 20220537

Super high-rise structure design on B3 tower of Changsha Poly International Plaza

CHEN Yu1,2, WANG Siqing1,2, XIA Xinhong1, ZHU Liang1

(1 Hunan Architectural Design Institute Group Co. , Ltd. , Changsha 410012, China; 2 New Complex Structure ResearchCenter of Hunan Architectural Design Institute Group Co. , Ltd. , Changsha 410012, China)

Abstract: The building height of B3 tower of Changsha Poly International Plaza is 235m. A hybrid frame-reinforced concretecore-outrigger truss-belt truss system was adopted, which belonged to the irregular structure and height overrun structure. Elasticanalysis of the tower was carried out using SATWE and ETABS software, and dynamic elastic-plastic time-history analysis wascarried out using PERFORM-3D. For key parts such as the reinforcement layer, the vertical retraction of the core tube and theinclined column, strengthening measures such as the outrigger truss penetrating the shear wall, setting cross steel bar concealedbracing in shear wall and the strengthening floor structure were adopted. The results show that all the indicators of the tower meetthe requirements of the code and the expected seismic performance targets, the structure is safe and reliable.

Keywords:super high-rise building; hybrid structural system; outrigger truss; belt truss; inclined frame column

∗湖南省科技计划项目:湖南省社会发展领域重点研发项目(2017SK2260)。

第一作者:陈宇,硕士,教授级高级工程师,一级注册结构工程师,主要从事新型复杂结构设计研究,Email:360047430@qq. com。

[引用本文] 陈宇,王四清,夏心红,等. 长沙保利国际广场 B3 塔楼超高层结构设计[ J]. 建筑结构,2022,52( 22):40-45. CHEN Yu,WANG Siqing,XIA Xinhong,et al. Super high-rise structure design on B3 tower of Changsha PolyInternational Plaza[J]. Building Structure,2022,52(22):40-45.