(1 五矿地产, 北京 100027; 2 理雅结构工程咨询有限公司, 上海 200040;3 中冶南方工程技术有限公司, 武汉 430073)

摘要: 长沙五矿广场项目 T1 塔楼属于超 A 级高度的超限高层建筑,采用带环桁架的混凝土框架-核心筒结构体系. 塔楼独特的建筑造型使其在 21 层及 31 层有立面收进,使用功能也由办公转变成酒店及公寓,并且在机电层布置转换桁架,将上部楼层不能落地的结构柱的荷载传递给主框架柱. 采用多个结构分析软件进行了多遇地震及风荷载作用下的弹性分析,并进行了罕遇地震作用下的动力弹塑性时程分析. 结果表明:结构能满足设定的抗震性能目标,结构收进所采用的加强措施合理有效.

关键词: 超高层建筑; 抗震性能化设计; 立面收进; 转换结构

中图分类号:TU398. 9 文献标志码:A 文章编号:1002-848X(2023)09-0040-06

DOI:10. 19701 / j. jzjg. LS220082

Structural design of out-of-code high-rise structure with elevation setbacks in Changsha Minmetals Square

JIANG Zhifeng1, ZHANG Lei2, LIU Bing3, ZHANG Sihai3, ZHOU Meixia1,LIU Bo1, DING Zhaohui2, LIAO Weijie2

(1 Minmetals Land, Beijing 100027, China; 2 LERA Consulting Structural Engineers, Shanghai 200040, China;3 WISDRI Engineering & Research Incorporation Ltd. , Wuhan 430073, China)

Abstract: Changsha Minmetals Square T1 Tower is an out-of-code high-rise building exceeding A-level requirement ofheight in the Chinese code, which adopts the reinforcement concrete frame-core wall structural system with belt truss. Theunique architecture design makes the architectural form have elevation setbacks at 21 and 31 floors and the use function alsotransforms from the office to the hotel and apartment. The transfer truss was arranged at mechanical room floor to transferthe loads of the structural columns that cannot land on the upper floor to the main frame columns. Multiple structuralanalysis programs were used to perform elastic analysis under the frequent earthquake and wind load, and perform dynamicelastoplastic time-history analysis under the rare earthquake. The results show that the structure can meet the setting of theseismic performance objectives, and the strengthening measures adopted by the structure for elevation setbacks arereasonable and effective.

Keywords:super high-rise building; performance-based seismic design; elevation setback; transfer structure

第一作者:江志峰,硕士,高级工程师,一级注册结构工程师,主要从事结构设计及管理工作,Email:lookingdream_79@ 163. com.

[引用本文] 江志峰,张磊,刘兵,等. 长沙五矿广场立面收进超限高层结构设计[ J]. 建筑结构,2023,53( 9):40-45. JIANG Zhifeng,ZHANG Lei,LIU Bing,et al. Structural design of out-of-code high-rise structure with elevationsetbacks in Changsha Minmetals Square[J]. Building Structure,2023,53(9):40-45.