(东南大学建筑设计研究院有限公司, 南京 210096)

摘要: 宜宾某游客接待中心主体结构环廊外径 111m,内径 87m,严格的外观要求和大跨度为结构设计带来挑战.介绍了接待中心环廊的结构体系选型与布置,创新性地采用了钢筋混凝土筒体支承钢箱梁悬挂的结构体系,利用 8个筒体支承两榀巨环形钢箱梁悬挂. 对结构设计中的关键问题进行了分析研究,通过合理的支座选择释放超长闭合环梁的温度效应,基本消除了温度作用下巨型环梁对下部混凝土结构的影响;对巨型钢环梁进行弯扭设计分析,确保关键受力构件安全;分析了楼盖结构竖向刚度的影响因素,进行了楼盖人行振动舒适度验算,通过设置 TMD解决了楼板振动舒适度问题. 最后介绍了结构预变形控制措施.

关键词: 环形结构; 悬挂结构; 温度作用; 弯扭设计; 舒适度分析

中图分类号:TU393. 3,TU351 文献标志码:A 文章编号:1002-848X(2023)02-0015-07

DOI:10. 19701 / j. jzjg. ZJ220038

Research on design of a large-span ring suspension structure

DU Lei, SUN Xun, LI Jian, QIAN Yang

(Architects & Engineers Co. , Ltd. of Southeast University, Nanjing 210096, China)

Abstract: The main structure of the visitor reception center in Yibin is a ring corridor with an outer diameter of 111m andan inner diameter of 87m. The strict appearance requirements and large-span of the ring corridor bring challenges to thestructural design. Structural system selection and arrangement of the visitor reception center were introduced. It innovativelyadopts the suspended structural system of steel box beams supported by reinforced concrete core-walls. Totally 8 core-wallswere applied to support two giant steel box ring beams. The key issues in the structural design were analyzed and studied.The temperature effect of the super-long closed ring beam was released through reasonable support selection, whichbasically eliminated the influence of the giant ring beam on the lower concrete structures under the effect of temperature.The flexure-torsion design analysis of the giant steel ring beam was carried out to ensure the safety of the key structuralmembers. The influencing factors of the vertical stiffness of the floor structure were analyzed, and the pedestrian vibrationcomfort of the floor was calculated. The vibration comfort problem of the floor slab was solved by setting TMDs. Finally,structural pre-deformation control measures were introduced.

Keywords:ring structure; suspended structure; temperature effect; flexure-torsion design; vibration comfort analysis

第一作者:都磊,硕士,高级工程师,一级注册结构工程师,主要从事结构设计工作,Email:dulei@ adriseu. com.

[引用本文] 都磊,孙逊,李剑,等. 某大跨环形悬挂结构设计研究[ J]. 建筑结构,2023,53(2):15-21. DU Lei,SUN Xun,LI Jian,et al. Research on design of a large-span ring suspension structure[ J]. Building Structure,2023,53(2):15-21.