七里河体育场结构设计与分析  

Structural design and analysis of Qilihe Stadium

作　　者：黄兆升 王栋 杨忠平 刘国龙 张晨 HUANG Zhaosheng;WANG Dong;YANG Zhongping;LIU Guolong;ZHANG Chen(Gansu Institute of Architectural Design and Research,Lanzhou 730030,China;School of Civil Engineering,Lanzhou University of Technology,Lanzhou 730050,China;Gansu Engineering Design and Research Institute Co.,Ltd.,Lanzhou 730030,China)

机构地区：[1]甘肃省建筑设计研究院有限公司,兰州730030 [2]兰州理工大学土木工程学院,兰州730050 [3]甘肃省工程设计研究院有限公司,兰州730030

出　　处：《建筑结构》2023年第9期67-74,共8页Building Structure

摘　　要：七里河体育场建筑造型新颖,平面采用四心椭圆,立面呈“7”字形,下部看台为周长约700m的环形钢筋混凝土框架结构,屋盖钢罩棚结构为倒放三角形空间钢管桁架结构,桁架长轴方向长约240m,最大悬挑长度约36m。通过对钢罩棚结构进行单独及总装模型分析并对下部结构是否设缝进行对比分析,确定了合理的结构布置形式与计算参数。采用多种软件对结构进行了不同荷载组合下整体抗震分析、屋盖稳定性分析、防连续倒塌分析和超长结构分析。采用通用有限元软件ABAQUS对关键节点进行了详细分析。最后,对屋盖结构进行数值风洞模拟分析,给出了屋盖表面上的平均风压系数和体型系数及结构周围流场的绕流特性。分析结果表明:该结构整体稳定性能良好,强度与刚度储备大,关键节点可靠,计算结果均满足规范要求。Qilihe Stadium has a novel architectural shape.The plane adopts four-center ellipse and the vertical shape is"7".The lower grandstand is an annular reinforced concrete frame structure with a circumference of about 700m,and the roof steel canopy is an inverted triangular space steel tube truss structure with a length of about 240m in the long axis direction and a maximum cantilever length of about 36m.Through the analysis of single and general assembly model of the steel canopy structure and the comparative analysis of whether the substructure has joints,the reasonable structure layout and calculation parameters were determined.The whole seismic analysis,roof stability analysis,continuous collapse prevention analysis and super-long structure analysis under different load combinations were carried out by using various softwares.The general finite element software ABAQUS was used to analyze the key nodes in detail.Finally,the average wind pressure coefficient and shape coefficient on the roof surface and the flow characteristics around the structure were obtained by numerical wind tunnel simulation on roof structure.The analysis results show that the structure has good overall stability,large strength and stiffness reserve,reliable key nodes,and the calculation results all meet the requirements of the code.

关 键 词：七里河体育场 悬挑钢桁架 超长混凝土结构 温度应力 风洞数值模拟 抗震分析 

分 类 号：TU398.7[建筑科学—结构工程]