(中信建筑设计研究总院， 武汉 430014)

［摘要］乌鲁木齐奥体中心田径馆主体结构采用现浇钢筋混凝土框架结构，屋盖为大跨度钢结构，最大跨度75.6m。通过框架结构的支撑布置方案比选，确定了支撑的形式和位置，并对大跨度屋盖进行了结构选型。对张弦立体桁架进行了静力分析和线性屈曲分析，采用Newton-Raphson方法进行几何非线性整体稳定分析，并对钢结构支座处的铸钢节点和销轴节点进行了复核验算。结果表明：BRB能有效控制结构的扭转效应；在满足内部装修要求的前提下，张弦立体桁架结构经济性更好；张弦立体桁架、高强度索和撑杆的应力及位移均在合理范围，结构的整体稳定系数能满足规范要求；铸钢节点和销轴节点能满足主体钢结构的受力构造要求。 

［关键词］乌鲁木齐奥体中心田径馆；张弦立体桁架；屈曲约束支撑；整体稳定分析；节点设计 

中图分类号：TU375-4 文献标识码：A文章编号：1002-848X(2021)14-0007-07

Structural design of the indoor stadium in Urumchi Olympic Sports Center 

AI  Wei,  ZHENG  Chenglong,  CHEN  Bao,  ZHOU  Zening 

(CITIC General Institute of Architectural Design and Research Co., Ltd., Wuhan 430014， China) 

Abstract: The main structure of indoor stadium in Urumchi Olympic Sports Center adopts a cast-in-place reinforced concrete frame structure, and the roof is a large-span steel structure with a maximum span of 75.6m. Through the comparison and selection of the support layout program of the frame structure, the form and location of the support were determined, and the structure of the large-span roof was selected. The static analysis and linear buckling analysis of the three-dimensional string truss were carried out. The Newton-Raphson method was used to carry out the geometric nonlinear overall stability analysis, and the cast steel joints and pin shaft joints at the steel structure support were checked. The results show that: BRB can effectively control the torsion effect of the structure; under the premise of meeting the requirements of internal decoration, the structure of the three-dimensional string truss is more economical; the stress and displacement of the three-dimensional string truss, high-strength cables and struts are all within a reasonable range; the overall stability factor of the structure can meet the specification requirements; the cast steel joints and pin shaft joints can meet the force structure requirements of the main steel structure. 

Keywords:indoor stadium in Urumchi Olympic Sports Center； three-dimensional  string truss； buckling restrained brace； overall stability analysis； joint design

作者简介：艾威，硕士，高级工程师，Email：16398625@qq.com。