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援塞内加尔竞技摔跤场钢罩棚为210m大跨空间拱结构,由主拱、后拱及次桁架组成,介绍了结构方案选型、结构静力、稳定及拱脚节点分析。结果表明,主拱采用菱形截面,后拱及次桁架采用倒三角空间立体桁架,以及纵向次桁架、联系桁架、支撑布置是合理的,杆件截面受力均匀,节点构造简单,结构空间整体性强;采用万向球铰支座的主拱拱脚节点设计合理,能够满足设计要求。
Aid to Senegal Athletic Wrestling Field The steel shed is a 210 m long-span arch structure consisting of a main arch, a back arch and a secondary truss. Structural selection, structural static and stability, and analysis of arch and foot joints are introduced. The results show that the main arch has a rhombus cross section, the back arch and the secondary truss adopts the inverted triangle space truss, the longitudinal truss, the truss and the supporting arrangement are reasonable, the cross section of the bar is uniformly stressed, the structure of the node is simple, and the structural space integrity Strong; universal ball hinge support the main arch arch foot node designed to meet the design requirements.