（北京市建筑设计研究院有限公司， 北京 100045）

［摘要］重庆市巴南区新建体育馆钢桁架屋盖跨度为109-2m×126-0m，在大跨钢屋盖下方设置悬挂观众看台属国内首创。对屋盖双向正交钢桁架布置方案和四个圆角部位为径环向钢桁架、其他部位为双向正交布置的钢桁架布置方案进行了经济性对比，最终确定采用后者，并分析了典型钢桁架节点应力。对悬挂看台结构体系、传力途径及构件设计进行了介绍，并重点针对多种人员激励下悬挂看台的竖向振动峰值加速度进行仿真分析，结果表明，悬挂看台具有较好的舒适度水平。

［关键词］重庆巴南新建体育馆； 大跨度屋盖； 钢桁架； 悬挂看台； 舒适度

中图分类号：TU393-3文献标识码：A文章编号：1002-848X(2018)20-0112-04

Structural design of large-span steel roof and suspended stands of New Indoor Stadium of Banan District in Chongqing

Gao Ming, Jing Zhitao

(Beijing Institute of Architectural Design, Beijing 100045, China)

Abstract:The steel truss roof of the New Indoor Stadium of Banan District in Chongqing spans  109-2m×126-0m space. It is the first in China to set up suspended stands under the large-span steel roof. The economic comparison between the two schemes was conducted, including a scheme with arrangement of two way orthogonal steel truss roof and a scheme with radial ring steel trusses at the four rounded corners and two way orthogonal steel truss roof in other part. Finally, the latter scheme was adopted and the stress of typical steel truss joints was analyzed. The structural system, force transmission way and component design of the suspended stands were introduced, and the vertical vibration peak acceleration of the suspended stands under the excitation of various personnel was simulated and analyzed. The results show that the suspended stands have a good comfortability level.

Keywords:New Indoor Stadium of Banan District in Chongqing; large-span roof; steel truss; suspended stand; comfortability

作者简介：高鸣，硕士，高级工程师，一级注册结构工程师，Email：gaomingbj@163.com。