河北北方学院体育馆屋盖弦支穹顶结构分析与设计*
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（1 天津大学建筑设计研究院，天津 300073； 2 天津市房屋建筑钢结构技术工程中心，天津 300072）
［摘要］河北北方学院体育馆平面投影为圆角矩形，屋面造型为弧形。通过方案的定性分析与对比，提出屋盖采用一种适用于非圆形平面建筑屋盖的球面弦支穹顶结构专利技术，详细阐述了该结构体系的构成思路与结构布置。采用有限元软件MIDAS/Gen 800，建立了屋盖弦支穹顶结构分析模型，并通过分析计算得到了各种荷载工况及组合下结构的静动力性能。为探索结构稳定性能，选取恒载+活载工况并考虑初始缺陷和几何非线性进行了全过程分析，得到了结构荷载\|位移曲线。计算结果表明各项指标均满足规范要求。［关键词］弦支穹顶; 体育馆; 稳定性能; 非线性; 非圆形平面建筑中图分类号：TU393.3，TU318 文献标识码：A 文章编号：1002-848X(2015)16-0006-05
Analysis and design of suspendome structure roof of the gymnasium of Hebei North UniversityYan Xiangyu1,2, Yu Jinghai1,2, Yu Yong1, He Caiyun1, Zhang Bo1(1 Architectural Design and Research Institute of Tianjin University, Tianjin 300073, China; 2 Tianjin Steel Building Structure Engineering Center, Tianjin 300072, China)Abstract: Considering the curved roof with rounded rectangle plane projection and the arc-shaped roof of the gymnasium of Hebei North University, a patent named a spherical suspendome fitting non-circle plane building was put forward and adopted through conceptual analysis and comparison of different structural schemes. Then detailed composition and layout of this structure were discussed. By finite element analysis software MIDAS/Gen800, the analytical model of the suspendome structure roof was established. Under various load cases and combinations, analyses of the suspendome structure were carried out and the static and dynamic responses of the structure were obtained. Taking initial imperfection and geometric nonlinearity into account, the whole process analysis under the action of dead and live loads was done to explore the structure stability and load-displacement curve was obtained. The calculation results show that each index can meet the requirements of specifications.Keywords: suspendome; gymnasium; stability; nonlinear; non-circle plane building
*国家自然科学基金资助项目（51408414），教育部高等学校博士学科点专项科研基金（20130032120024）。作者简介：闫翔宇，博士，高级工程师，一级注册结构工程师，Email: xy_yan2005@163.com。
