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（湖南省建筑設(shè)計(jì)院， 長沙 410011）

［摘要］郴州市體育場屋蓋采用大跨懸挑鋼桁架結(jié)構(gòu)。針對(duì)其跨度大、形狀不規(guī)則的特點(diǎn)，詳細(xì)闡述了結(jié)構(gòu)的體系布置情況，并利用有限元軟件對(duì)屋蓋結(jié)構(gòu)體系進(jìn)行了受力、變形、模態(tài)和整體屈曲分析；介紹了支座類型的選擇和減小支座水平推力的措施；對(duì)固定鉸支座和彈性支承屋蓋結(jié)構(gòu)進(jìn)行了靜力和地震作用分析，探討了上下部結(jié)構(gòu)協(xié)同工作對(duì)屋蓋抗震性能的影響。分析結(jié)果表明，該屋蓋結(jié)構(gòu)體系合理，整體性強(qiáng)，抗震性能良好。

［關(guān)鍵詞］鋼屋蓋; 結(jié)構(gòu)設(shè)計(jì); 屈曲分析; 大跨懸挑結(jié)構(gòu); 彈性支承

中圖分類號(hào)：TU318       文獻(xiàn)標(biāo)識(shí)碼：A       文章編號(hào)：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

作者簡介：王四清，總工程師，教授級(jí)高工，Email：AG5678@163.com。

參考文獻(xiàn)

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