（天津市建筑设计院，天津 300074）
［摘要］对天津奥林匹克中心体育场钢结构屋盖体系结构的杆件布置及构造方式进行了介绍，并利用有限元软件对屋盖结构体系进行了受力、变形、模态和屈曲分析。针对其大悬挑特性，在对计算结果进行总结的基础上，修改了结构杆件的布置及构造，改进了整个结构受力体系，优化了结构性能，最终使整个结构布置更加合理、经济、美观。
［关键词］钢结构屋盖；钢管桁架；大悬挑；结构分析；几何非线性；优化设计
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
作者简介：宋彻，院总工程师，教授级高级工程师，一级注册结构工程师，Email:SC@tadi.net.cn。
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