(1 华南理工大学土木与交通学院, 广州 510640; 2 华南理工大学建筑设计研究院有限公司,广州 510640; 3 华南理工大学亚热带建筑科学国家重点实验室, 广州 510640; 4 湖南省第四工程有限公司, 长沙 410119)

摘要: 中南大学新校区体育馆主体结构采用钢筋混凝土框架结构,屋盖的最大跨度为 92. 1m,采用空间钢管桁架结构,具有较好的整体稳定性. 屋盖桁架跨度大,温度作用明显,为减小温度变化对结构造成的不利影响,钢结构屋盖与混凝土框架柱之间通过钢管转动柱及固定铰支座组成节点连接,该连接方式使得桁架在因温度变化而产生水平向伸长或缩短时,钢管转动柱通过一定角度的倾斜,以适应屋盖桁架的伸缩变形,从而实现屋盖桁架温度应力的释放,提高了整体结构的承载能力. 考虑结构特点及场地条件,采用累积滑移施工. 对施工过程进行模拟分析并将桁架应力及挠度的监测值与计算值进行对比,结果表明滑移施工过程安全可靠.

关键词: 大跨空间结构; 钢管桁架; 温度应力; 支座节点; 滑移施工

中图分类号:TU393. 3 文献标志码:A 文章编号:1002-848X(2023)11-0013-07

DOI:10. 19701 / j. jzjg. 20201488

Design and slip construction analysis on steel roof of gymnasium on new campus of Central South University

WU Yuqi1, LUO Zhifeng2, WANG Fan2,3, YANG Weitao1, YUE Jianjun4, PENG Chong4

(1 School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640,China; 2 Architectural Design & Research Institute of SCUT Co. , Ltd. , Guangzhou 510640, China; 3 StateKey Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China;4 Hunan No. 4 Engineering Company Limited, Changsha 410119, China)

Abstract: The main structure of the gymnasium on the new campus of Central South University adopts a reinforced concreteframe structure. The maximum span of the steel roof is 92. 1m, and spatial pipe truss structure is adopted, which has goodoverall stability. The roof truss has a large span and the temperature effect is obvious. In order to reduce the adverse effectsof temperature changes on the structure, the steel structure roof and the concrete frame column are connected by a jointconsisting of a steel pipe rotating column and a fixed hinged support. The connection method makes the steel pipe rotatingcolumn tilt at a certain angle to adapt to the expansion and deformation of the roof truss when the truss is stretched orshortened horizontally due to temperature changes, so as to release the temperature stress of the roof truss and improve thebearing capacity of the whole structure. Considering the structural characteristics and site conditions, the cumulative slidingconstruction was adopted. The construction process of the roof slip construction was simulated and analyzed, and themonitoring values of truss stress and deflection were compared with the calculated values. The results show that theconstruction process is safe and reliable.

Keywords:large-span spatial structure; steel pipe truss; thermal stress; bearing joint; sliding construction

第一作者:吴雨琪,硕士研究生,主要从事建筑结构设计与研究,Email:yuqiwuyq@ 126. com.

[引用本文] 吴雨琪,罗志锋,王帆,等. 中南大学新校区体育馆钢屋盖设计与滑移施工分析[ J]. 建筑结构,2023,53(11):13-19,53. WU Yuqi,LUO Zhifeng,WANG Fan,et al. Design and slip construction analysis on steel roof ofgymnasium on new campus of Central South University [J]. Building Structure,2023,53(11):13-19,53.