（天津大学建筑工程学院，天津 300072）
［摘要］分析了茌平体育中心体育馆工程的建筑造型，根据屋盖造型提出了四种结构体系并进行了初步的对比分析，确定出了各方面性能较好的弦支穹顶结构体系作为屋盖结构体系，采用三维建模技术得到了钢拱的空间曲线。结合建筑使用功能和结构受力的要求，分别调整了弦支穹顶的结构布置并局部修改了建筑造型，进而提出了本工程采用的大跨度弦支穹顶叠合拱结构体系。采用有限元软件对这一新型结构体系在各种荷载工况和组合下进行了静力分析以及模态分析，得到了结构的受力、变形和振型特点，为工程的设计和施工提供了参考。
［关键词］弦支穹顶；叠合拱；体育馆；建筑造型；大跨度
Largespan hybrid structure of suspendome with stacked arch in Chiping Gymnasium
Chen Zhihua, Yan Xiangyu, Liu Hongbo, Yu Jinghai(Civil Engineering Department, Tianjin University, Tianjin 300072, China)
Abstract:Architectural modeling of Chiping Gymnasium in Chiping Sports Center was summarized. According to the architectural configuration, four structural systems were put forward and analyzed, and then the suspendome was adopted as the roof structural system. With three-dimension modeling technique, the spatial curved arch was got. Considering the mutual effect of architecture and structure, the roof structural system was adjusted as well as local architectural modeling. And then the large-span suspendome with stacked arch was put forward. With FEM software, new type structural system was analyzed under different load case and the feature of bearing, deformation and mode were attained. And it can benefit to the design and construction of practical projects.
Keywords:suspendome; stacked arch; gymnasium; architectural modeling; large-span
*国家自然科学基金项目（50778122）；教育部新世纪优秀人才支持计划（NCET-06-0228）。
作者简介：陈志华，教授，博导，Email:zhchen@tju.edu.cn。
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