- 摘 要
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（天津市建筑設(shè)計院，天津 300074）
［摘要］對天津奧林匹克中心體育場鋼結(jié)構(gòu)屋蓋體系結(jié)構(gòu)的桿件布置及構(gòu)造方式進行了介紹，并利用有限元軟件對屋蓋結(jié)構(gòu)體系進行了受力、變形、模態(tài)和屈曲分析。針對其大懸挑特性，在對計算結(jié)果進行總結(jié)的基礎(chǔ)上，修改了結(jié)構(gòu)桿件的布置及構(gòu)造，改進了整個結(jié)構(gòu)受力體系，優(yōu)化了結(jié)構(gòu)性能，最終使整個結(jié)構(gòu)布置更加合理、經(jīng)濟、美觀。
［關(guān)鍵詞］鋼結(jié)構(gòu)屋蓋；鋼管桁架；大懸挑；結(jié)構(gòu)分析；幾何非線性；優(yōu)化設(shè)計
Analysis and optimization design of the steel roof of Tianjin Olympic Center Stadium
Song Che, Yu Xin, Chen Yongsheng(Tianjin Architecture Design Institute, Tianjin 300074, China)
Abstract:Tianjin Olympic Center Stadium has attracted a wide spread attention because of its unique form of architecture, and its process and results of steel tube truss analysis and design have important significance to the future design of steel structure for its characters of large-span and large-cantilever. Arrangement and conformation of the steel structure roof are introduced first. And then by improving the arrangement and conformation of the structural member bars based on the analysis and summary on the results of force analysis, deformation analysis, model analysis and buckling analysis computing by FEM software, the structural performance is optimized and the whole structure is more economic, reasonable and delight than before.
Keywords:steel structure roof; steel tube truss; large cantilever; structure analysis; geometric nonlinear; optimization design
作者簡介：宋徹，院總工程師，教授級高級工程師，一級注冊結(jié)構(gòu)工程師，Email:SC@tadi.net.cn。
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