(1 上海建筑设计研究院有限公司, 上海 200041;2 上海建筑空间结构工程技术研究中心, 上海 200041)

摘要: 针对合肥滨湖国际会展中心综合馆大跨度屋盖,提出一种钢-铝组合张弦空间桁架新型受力体系,其中上部组合桁架的下弦杆、腹杆采用钢构件,组合桁架上弦杆采用铝合金型材,撑杆和拉索为钢结构,该体系集合了传统张弦桁架空间受力特点和铝合金结构的优点,形成铝合金主结构与屋盖围护系统一体化设计. 介绍了屋盖受力体系的构成、钢-铝合金连接节点、一体化屋面和张弦桁架的分析设计结果,同时研究了屋盖结构的稳定性、抗连续倒塌等问题. 分析结果表明,屋盖体系各项指标均满足规范要求,可为钢-铝合金组合空间桁架结构体系的研究和应用提供参考.

关键词: 钢-铝组合张弦空间桁架; 大跨空间结构; 稳定性; 抗连续倒塌; 一体化屋面

中图分类号:TU398+. 9 文献标志码:A 文章编号:1002-848X(2023)01-0023-06

DOI:10. 19701 / j. jzjg. SHY2303

Research on design technology of large-span steel-aluminum composite stringed alloy trussroof system of Hefei Binhu International Convention and Exhibition Center Complex

SUN Qiuzhi1,2, XU Jianli1,2, LI Yaming1,2, LIU Hongxin1,2

(1 Shanghai Institute of Architectural Design & Research Co. , Ltd. , Shanghai 200041, China;2 Shanghai Engineering Research Center of Spatial Structures, Shanghai 200041, China)

Abstract: According to the large-span roof of Hefei Binhu International Convention and Exhibition Center Complex, a newtype steel-aluminum composite stringed alloy truss fore system was proposed. The lower chords and webs of the uppercomposite truss are steel members, the upper chords of the composite truss are aluminum alloy profiles, and the braces andcables are steel structures. This system combines the characteristics of traditional truss string structure and the advantagesof aluminum alloy structure, forming an integrated design of aluminum alloy main structure and roof enclosure system. Thestructure of the roof structure, steel-aluminum alloy joints, analysis and design results of integrated roof and truss stringwere introduced, and the stability and resistance to continuous collapse of the roof structure were studied. The analysisresults show that all the indexes of the roof system meet the requirements of the code, which provides a reference for thedevelopment of the steel-aluminum composite alloy truss structural system.

Keywords:steel-aluminum composite stringed alloy truss; large-span spatial structure; stability; resistance to continuouscollapse; integrated roof

∗华东建筑集团股份有限公司课题(18-1 类-0066-结),上海建筑设计研究院有限公司课题(18-B1-0244-结).

作者简介:孙求知,硕士,工程师,主要从事大跨结构设计工作,Email:sunqz@ isaarchitecture. com.

[引用本文] 孙求知,许建立,李亚明,等. 合肥滨湖国际会展中心综合馆大跨度钢-铝组合张弦空间桁架屋盖体系设计技术研究[J]. 建筑结构,2023,53( 1):23-28. SUN Qiuzhi,XU Jianli,LI Yaming, et al. Research on designtechnology of large-span steel-aluminum composite stringed alloy truss roof system of Hefei Binhu International Conventionand Exhibition Center Complex [J]. Building Structure,2023,53(1):23-28.