天津商业大学新建体育馆屋盖环桁架拱支单层网壳结构分析与设计*
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（1 天津大学建筑工程学院，天津 300072； 2 天津大学滨海土木工程结构与安全教育部重点实验室，天津 300072； 3 天津市房屋建筑钢结构技术工程中心，天津 300072； 4 天津大学建筑设计研究院，天津 300073)
［摘要］天津商业大学新建体育馆屋盖采用环桁架拱支单层网壳结构体系。结合体育馆屋盖建筑造型，进行了环桁架、拱桁架及单层网壳等的结构布置；依据相关规范考虑各种荷载效应及荷载组合，进行了环桁架拱支单层网壳静、动力性能的分析和设计；对环桁架拱支单层网壳进行了非线性稳定性分析，通过跟踪缺陷结构非线性平衡路径，确定了结构的稳定承载力；最后详细分析了支座水平刚度对环桁架拱支单层网壳结构性能的影响，并建立结构整体模型，分析了下部结构对屋盖钢结构受力性能的影响。分析结果表明，环桁架拱支单层网壳具有很好的承载能力和变形性能，能安全、可靠地完成使用功能。［关键词］体育馆屋盖结构; 拱支单层网壳; 非线性稳定性; 支座约束刚度; 下部混凝土结构中图分类号：TU393.3，TU318.2 文献标识码：A 文章编号：1002-848X(2015)16-0011-06
Analysis and design of arch-supported single-layer lattice shell for the roof structure of the new gymnasium of Tianjin University of CommerceYin Yue1, 2, 3, Zhang Wenbo1, Yan Xiangyu3, 4, Yu Jinghai3, 4, Li Jingming4(1 School of Civil Engineering, Tianjin University, Tianjin 300072, China; 2 Key Laboratory of Coastal Structures in Civil Engineering and Safety, Ministry of Education, Tianjin University, Tianjin 300072, China; 3 Tianjin Steel Building Structure Engineering Center, Tianjin 300072, China; 4 Architectural Design and Research Institute of Tianjin University, Tianjin 300073, China)Abstract: Arch-supported single-layer lattice shell was adopted as the roof structure of the new gymnasium of Tianjin University of Commerce. Loop trusses, arch trusses and single-layer lattice shell were set up in accordance with the architect design. Static analysis and dynamic analysis and design of the arch-supported single-layer lattice shell were conducted considering different loads and load combinations specified by related codes. Overall stability of the arch-supported single-layer lattice shell was studied by nonlinear finite element analysis. The stability of the structure was determined by tracking the nonlinear equilibrium path of the defect structure. The influence of the lateral stiffness of the bearing on the behaviour of the arch-supported single-layer lattice shell was also analyzed in detail. The influence of substructure on the mechanical properties of the roof structure was analyzed by the whole structure model. It is shown that the arch-supported single-layer lattice shell has excellent bearing capacity and deformation behaviour and is safe and reliable to be used.Keywords: roof structure of gymnasium; arch-supported single-layer lattice shell; nonlinear stability; restrain stiffness of support; reinforced concrete substructure
*国家自然科学基金资助项目（51408414），天津市建设系统科学技术发展计划（2014-03）。通讯作者：闫翔宇，博士，高级工程师，一级注册结构工程师，Email:xy_yan2005@163.com。
