（湖南省建筑设计院， 长沙 410011）

［摘要］郴州市体育场屋盖采用大跨悬挑钢桁架结构。针对其跨度大、形状不规则的特点，详细阐述了结构的体系布置情况，并利用有限元软件对屋盖结构体系进行了受力、变形、模态和整体屈曲分析；介绍了支座类型的选择和减小支座水平推力的措施；对固定铰支座和弹性支承屋盖结构进行了静力和地震作用分析，探讨了上下部结构协同工作对屋盖抗震性能的影响。分析结果表明，该屋盖结构体系合理，整体性强，抗震性能良好。

［关键词］钢屋盖; 结构设计; 屈曲分析; 大跨悬挑结构; 弹性支承

中图分类号：TU318       文献标识码：A       文章编号：1002-848X(2014)12-0058-05

Structural design on roof of Chenzhou Stadium

Wang Siqing, Chen Yu, Chen Feng

 (Hunan Provincial Architectural Design Institute, Changsha 410011, China)

Abstract: The roof of Chenzhou Stadium adopts large-span cantilever steel truss structure. On basis of its large span and irregular shape, the system arrangement of this structure was elaborated. Through finite element analysis, the force, deformation, modality and buckling system of the roof structure were discussed. The choice of the support type and the measures of reducing the horizontal thrust on the support were also introduced. According to the analysis of the fixed hinged support and elastic-support roof structure under static force and seismic action, the effect of the synergistic work of the top and bottom structures to the seismic performance of the roof was discussed. The result shows that this roof structure is a rational system with strong integrity and good seismic performance.

Keywords: steel roof; structural design; buckling analysis; large-span cantilever structure; elastic-support

作者简介：王四清，总工程师，教授级高工，Email：AG5678@163.com。

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