某室内游乐中心微曲面网架结构设计与分析*
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（1 天津大学建筑工程学院，天津 300072； 2 天津市房屋建筑钢结构技术工程中心，天津 300072；3 天津大学建筑设计研究院，天津 300073）
［摘要］分析了某室内游乐中心中央游乐大厅屋盖的建筑造型，利用数值逆吊法实现自由曲面屋盖的找形，提出四种结构体系并对其进行初步对比分析，确定采用各方面性能较好的微曲面网架。采用有限元软件对结构体系在各荷载工况和组合下进行了静力分析及动力分析，得到了结构的受力、变形和振型特点，通过将屋盖加入整体结构进行对比分析，保证屋盖设计的精准及安全。［关键词］数值逆吊法; 自由曲面找形; 微曲面网架; 静动力分析; 整装分析中图分类号：TU393.3 文献标识码：A 文章编号：1002-848X(2015)16-0030-05
Structural design and analysis of the less-curved surface grid of an indoor amusement centerZhang Haohao1, Wang Xiaodun1,2, Chen Zhihua1,2, Han Juan3, Yan Xiangyu2,3（1 School of Civil Engineering, Tianjin University, Tianjin 300072, China; 2 Tianjin Steel Building Structure Engineering Center, Tianjin 300072, China; 3 Architectural Design and Research Institute of Tianjin University, Tianjin 300073, China）Abstract: The architectural modeling of the amusement central hall roof of an indoor amusement center was studied, and the form-finding of the free-form surface roof was conducted with the numerical inverse hanging method. Four kinds of structural systems were presented and preliminary analysis and comparison were carried out, and a less-curved surface grid with better behavior in all aspects was adopted. Static analysis and dynamic analysis were conducted respectively for the less-curved surface grid under different load combinations with finite element software, thus the characteristics of force, deformation and vibration mode of the stucture were obtained. Furthermore, integral assembly analysis considering the interaction of the upper roof and the lower frame was conducted to guarantee the accuracy and safety of the roof design.Keywords: numerical inverse hanging method; free-form surface form-finding; less-curved surface grid; static analysis and dynamic analysis; integral assembly analysis
*天津市建设系统科学技术发展计划（2014-03）。通讯作者：王小盾，副教授，硕士生导师，Email：maodun2004@126.com。
