三亚国际免税城酒店项目复杂混合超限结构设计要点  

Design keys of complex composite out-of-code structure for Sanya International Duty Free Hotel

作　　者：赵博尧[1] 徐福江[1] 盛平[1] 张沫洵 冯岩 卢帅 汤林墨 侯舒乐 ZHAO Boyao;XU Fujiang;SHENG Ping;ZHANG Moxun;FENG Yan;LU Shuai;TANG Linmo;HOU Shule(Beijing Institute of Architectural Design,Beijing 100045,China)

机构地区：[1]北京市建筑设计研究院有限公司,北京100045

出　　处：《建筑结构》2023年第18期18-22,97,共6页Building Structure

摘　　要：三亚国际免税城酒店项目为复杂混合结构,主体结构仅5个核心筒落至基础,核心筒间由多个体块组成,各体块相互交错、上下断开,端部的筒体两侧存在较大的悬挑结构。结合建筑平面功能和立面布置,在各体块顶部或底部的设备层设置转换桁架和悬挑桁架,酒店客房柱为吊柱或托柱,支撑在转换桁架或悬挑桁架之上。通过多方案对比,采用钢筋混凝土筒体+转换桁架混合结构形式。主要介绍了结构超限情况及超限措施,典型悬挑桁架的整体受力分析和关键节点有限元分析。采用Paco-SAP软件对结构进行了罕遇地震作用下的动力弹塑性时程分析。结果表明,结构布置合理,结构体系安全可靠。Sanya International Duty Free Hotel is a complex composite structure,with only five core tubes of the main structure supported on the foundation.The core tube is composed of multiple individual blocks that are interlaced and disconnected from each other,and there are large cantilever structures on both sides of the tube.Combined with the plan function and elevation layout of the building,transfer trusses and cantilever trusses were set on the equipment floor at the top or bottom of each block.The hotel room columns are hanging columns or supporting columns,which are supported on the transfer trusses or cantilever trusses.Through comparison of multiple calculations,the composite structure of reinforced concrete tube-transfer truss was adopted.The situation and measures of structural out of codes were mainly introduced,the overall structural analysis and the key node finite element analysis of a typical cantilever truss.The dynamic elastoplastic time history analysis of the structure under rare earthquake action was carried out using Paco-SAP software.The results show that the structural layout is reasonable and the structural system is safe and reliable.

关 键 词：复杂混合结构 转换桁架 悬挑桁架 筒体 超限 

分 类 号：TU318[建筑科学—结构工程]