(中衡设计集团股份有限公司, 苏州 215123)

摘要: 宿迁京东智慧城超高层办公楼结构高度 156.5m. 针对塔楼结构体系制定了 7 种框架-核心筒结构方案,分别是混凝土结构方案、混合结构方案与 5 种钢结构方案,5 种钢结构方案核心筒的抗侧力构件分别包含屈曲约束支撑、偏心支撑、交叉中心支撑、加劲钢板墙、黏滞阻尼墙. 对 7 种结构在风荷载、地震作用下的整体计算指标以及工程造价进行对比. 分析结果表明:中震作用下,混凝土结构方案与混合结构方案核心筒混凝土名义拉应力过大ꎻ单斜杆布置形式的屈曲约束支撑或偏心支撑核心筒,因结构侧向刚度有限,层间位移角难以满足规范要求ꎻ交叉中心支撑或加劲钢板墙均可有效提高结构抗侧刚度,加劲钢板墙延性较好,且无中心支撑循环荷载作用下的承载力退化现象ꎻ加劲钢板墙与黏滞阻尼墙组合核心筒,可为结构提供附加阻尼,降低地震动力响应与提升建筑整体品质.经技术性与经济性分析,最终结构体系采用钢管混凝土框架-加劲钢板墙与黏滞阻尼墙组合核心筒.

关键词: 京东智慧城;高烈度区;超高层办公楼;结构体系选型;加劲钢板墙;黏滞阻尼墙;附加阻尼;组合核心筒

中图分类号:TU375 文献标志码:A 文章编号:1002-848X(2022)20-0060-05

DOI:10.19701 / j.jzjg.ZJ220071

Structural system selection of super high-rise office building of Jingdong Wisdom City in Suqian City

ZHU Xunyan, ZHANG Jin, TAN Lihua, YANG Lülei, FU Genzhou, ZHANG Wei

(ARTS Group Co. , Ltd. , Suzhou 215123, China)

Abstract: Super high-rise office building of Jingdong Wisdom City in Suqian City has a structural height of 156.5m. Forthe tower structure system, 7 kinds of frame-core tube structure schemes were formulated, namely concrete structurescheme, hybrid structure scheme, and 5 kinds of steel structure schemes. The lateral force-resistant members of the coretube of the 5 kinds of steel structure schemes contain buckling restrained brace, eccentric brace, cross center brace,stiffened steel plate wall, viscous damping wall. The overall calculation index and project cost of 7 kinds of structures underthe action of wind load and earthquake were compared. The analysis results show that: under moderate earthquake, thenominal tensile stress of the core tube concrete of the concrete structure scheme and the hybrid structure scheme is toolarge. For the buckling restrainted brace or eccentric bracing core tube in the form of single inclined rod arrangement, dueto the limited lateral stiffness of the structure, the inter-story displacement angle is difficult to meet the requirements of thespecification. Cross center brace and stiffened steel wall can effectively improve the lateral stiffness of the structure, and theductility performance of the stiffened steel plate wall is better, and there is no bearing capacity degradation phenomenonunder cyclic load compared with centric brace. The combined core tube of the stiffened steel plate wall and the viscousdamping wall can provide additional damping for the structure, reduce the seismic dynamic response and improve the overallquality of the building. After technical and economical analysis, the final structural system adopts the concrete-fill steeltubular frame-stiffened steel plate wall and viscous damping wall combined core tube.

Keywords:Jingdong Wisdom City;high-intensity region;super high-rise office building;structural system selectionꎻstiffened steel plate wall;viscous damping wall;additional damping;combined core tube

∗中衡设计集团科研项目(2019-S1):多高层结构减震技术研究及工程应用.

第一作者:朱寻焱,硕士,高级工程师,一级注册结构工程师,主要从事超高层与大跨度复杂结构设计工作,Email:zhuxunyan@artsgroup. cn.

[引用本文] 朱寻焱,张谨,谈丽华,等. 宿迁京东智慧城超高层办公楼结构体系选型[J]. 建筑结构,2022,52(20):60-64,91. ZHU Xunyan,ZHANG Jin,TAN Lihua,et al. Structural system selection of super high-rise office building ofJingdong Wisdom City in Suqian City [J]. Building Structure,2022,52(20):60-64,91.