南昌文体中心大跨钢结构设计与分析  

Design and analysis on large-span steel structure of Nanchang Cultural and Sports Center

作　　者：牛永锋 王喆 李竞远 王力 郁银泉 胡天兵 刘钊 NIU Yongfeng;WANG Zhe;LI Jingyuan;WANG Li;YU Yinquan;HU Tianbin;LIU Zhao(China Institute of Building Standard Design&Research Co.,Ltd.,Beijing 100048,China)

机构地区：[1]中国建筑标准设计研究院有限公司,北京100048

出　　处：《建筑结构》2022年第12期1-8,共8页Building Structure

基　　金：中国建筑标准设计研究院有限公司自立科研课题:装配式钢结构建筑节点连接关键技术研究(2021101)。

摘　　要：南昌文体中心项目由两侧混凝土塔楼和中部大跨钢结构连体桁架组成,最大跨度为99m,存在连体结构、楼板不连续等超限项,是一个大跨钢结构超限建筑。对大跨钢结构超限内容以及超限性能化目标进行阐述,同时针对超限内容,分别进行多遇地震作用下振型分解反应谱法计算、多遇地震作用下弹性时程补充验算,设防地震和罕遇地震作用下等效弹性振型分解反应谱法计算以及罕遇地震作用下弹塑性计算分析。此外,还进行了钢结构的温度作用分析以及混凝土楼盖的舒适度分析。分析结果表明:对大跨钢结构连体桁架体系的超限项设计可针对性加强,整体结构和各部分构件在各种工况下均能满足规范要求,结构设计安全、可靠。The Nanchang Cultural and Sports Center project is composed of concrete towers on both sides and a large-span steel structure conjoined truss in the middle. The maximum span is 99 m. There are out-of-code items such as conjoined structure and floor slab discontinuity. It is a large-span steel structure out-of-code building. The out-of-code content of large-span steel structures and the goal of out-of-code performance were explained. At the same time, for the out-of-code content, the mode shape decomposition response spectrum method calculation under frequent earthquake action, the supplementary check calculation of elastic time history under frequent earthquake action, equivalent elastic mode shape decomposition response spectrum method calculation under moderate earthquake and rare earthquake action and elastic-plastic calculation analysis under rare earthquake action were carried out respectively. In addition the temperature effect analysis of the steel structure and the comfort analysis of the concrete floor were carried out. The analysis results show that the design of out-of-code items for the large-span steel structure conjoined truss system can be strengthened in a targeted manner, the overall structure and each part of the components can meet the specification requirements under various working conditions and the structural design is safe and reliable.

关 键 词：南昌文体中心 大跨钢结构连体 超限建筑 性能化设计 钢结构桁架 楼盖舒适度 重型热轧H型钢 

分 类 号：TU398.7􀆰[建筑科学—结构工程]