天津体育中心自行车馆钢屋盖弦支穹顶结构设计与分析*
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(1 天津大学建筑工程学院，天津 300072；2 滨海土木工程结构与安全教育部重点实验室(天津大学)，天津 300072；3 天津大学建筑设计研究院，天津 300073；4 天津市建筑设计院，天津 300072）［摘要］天津体育中心自行车馆钢屋盖采用弦支穹顶结构体系，针对正交网格弦支穹顶结构的特点，对上部结构网格进行优化以方便索杆体系的设置。分析了作用于结构的恒荷载、活荷载、风荷载、温度作用以及地震作用等，并对各种工况进行组合，分析结构静力、动力性能，确保结构安全可靠。分析表明：局部肋环形网格划分可以有效解决正交网格周边索杆体系布置困难的问题；向心关节轴承撑杆上节点可以简化铰接节点构造；地震参与工况对结构内力不起控制作用。［关键词］弦支穹顶; 预应力优化; 静力分析; 动力分析; 向心关节轴承中图分类号：TU394 文献标识码：A 文章编号：1002-848X(2015)05-0006-04Suspend-dome structure design and analysis for steel roof of bicycle gymnasium in Tianjin Sports CenterWang Zhe1, Wang Xiaodun1, Chen Zhihua1,2, Yan Xiangyu3, Deng Xue3, Chen Wenyuan4（1 School of Civil Engineering, Tianjin University, Tianjin 300072, China; 2 Key Laboratory of Coast Civil Structure and Safety, Ministry of Education（Tianjin University）, Tianjin 300072, China; 3 Architectural Design and Research Institute of Tianjin University, Tianjin 300073, China; 4 Tianjin Architecture Design Institute, Tianjin 300072, China)Abstract: The steel roof of bicycle gymnasium in Tianjin Sports Center adopts suspend-dome structural system. Based on the characteristics of the suspend-dome structure with orthogonal-grids, the grid optimization for the upper structure was carried out so as to arrange the cable-strut system. The dead load, live load, wind load, temperature effect and earthquake effect were combined to analyze the static force and dynamic performance of the structure to ensure the safety and reliability of the structure. The results show that local rib circular grid is effective to solve the problem in setting cable-strut system near orthogonal grids. The top node of radial spherical plain bearing can simplify the structural details of the hinged joint. The earthquake load case is not the controlling load case.Keywords: suspend-dome; pre-stress optimization; static analysis; dynamic analysis; radial spherical plain bearing*国家自然科学基金（51478310）。通讯作者：陈志华，博士，教授，Email: zhchen@tju.edu.cn。参考文献［1］魏清桥.仿生学在空间结构中的妙用［J］.建筑，2009(9)：34-35.［2］王哲,王小盾,陈志华,等.向心关节轴承撑杆上节点试验研究及有限元分析［J］.建筑结构学报,2013, 34(11):70-75.［3］王哲,王小盾,陈志华,等.向心关节索杆体系弦支穹顶张拉模拟分析［J］.建筑结构学报, 2014, 35(11),102-107.［4］陈志华.弦支穹顶结构［M］.北京：科学技术出版，2010.［5］陈志华，肖骁，刘红波. 太阳辐射作用下钢管温度计算简化方法［J］．天津大学学报：自然科学与工程技术版，2014，47（增刊）：1-7.
