(中国建筑西南设计研究院有限公司,成都 610042)

摘要: 某连体建筑由 52.35m 高的框剪结构 A 塔楼和 77.5m 高的框筒结构 B 塔楼通过跨度为 32.4m 的单层钢连廊在 47.75m 高度上连接形成.两栋塔楼主体体量差异大,进行了 4 种连体连接方式的选型分析,确定了滑动支座设置于连廊上端的两端滑动的连接形式.重点分析了隔震连廊对主体结构的影响,结果表明连廊两端设置 4 个摩擦摆支座的弱连接形式,减弱了连体结构对主体结构的影响,主体结构可以分开单独进行分析设计.对整体模型进行了弹塑性分析,结果表明采用弱连接后,连体结构各构件达到性能目标的要求.对支承连体牛腿的有限元分析结果表明,牛腿采用三角桁架形式的布置及对应构造安全可靠.对连廊楼盖单人连续荷载及人群荷载分析结果表明,其舒适度满足规范要求.

关键词: 高层连体结构;弱连接;隔震;摩擦摆支座;楼盖舒适度分析

中图分类号:TU318 文献标志码:A 文章编号:1002-848X(2022)17-0092-07

DOI:10.19701 / j.jzjg.CSWADI2017

Design and analysis for a high-rise conjoined structure with different volume

PENG Zhizhen,QIN Pan,WU Xiaobin,CHEN Zhiqiang,CHEN Hongyan,ZHU Jianfu,ZHANG Xingyu,YANG Lin

(China Southwest Architectural Design and Research Institute Co. ,Ltd. ,Chengdu 610042,China)

Abstract: A conjoined building consists of a frame-shear structure A tower with a height of 52.35m and a frame-and-tubestructure B tower with a height of 77.5m connected by a single-story steel corridor with a span of 32.4m at a height of47.75m. There is a big difference in the volume of the two main tower buildings,so the selection and analysis of fourconjoined connection methods were carried out,and the two ends of the sliding bearing set at the upper end of theconnecting corridor were determined. The impact of the seismic isolation corridor on the main structure was mainlyanalyzed. The results show that the weak connection form of four friction pendulum supports at both ends of the corridorreduces the influence of the connected structure on the main structure,and the main structure can be analyzed and designedseparately. The elastic-plastic analysis of the overall model was carried out,and the results show that after the weakconnection is adopted,the components of the conjoined structure meet the performance target requirements. The finiteelement analysis results of the supporting conjoined corbels show that the arrangement of the corbels in the form of triangulartrusses and the corresponding structure are safe and reliable. The analysis results of single continuous load and crowd loadof the connecting corridor floor show that its comfort meets the requirements of the code.

Keywords:high-rise conjoined structure;weak connection;seismic isolation;friction pendulum bearing;floor comfortanalysis

第一作者:彭志桢,硕士,高级工程师,一级注册结构工程师,主要从事超高层及减隔震的结构设计研究,Email: pzzhen@ 126.com.

[引用本文] 彭志桢,秦攀,吴小宾,等. 某差异体量高层连体结构设计与分析[ J]. 建筑结构,2022,52(17):92-98. PENG Zhizhen,QIN Pan,WU Xiaobin,et al. Design and analysis for a high-rise conjoined structure with differentvolume[J]. Building Structure,2022,52(17):92-98.