(广东省建筑设计研究院，广州510010)
［提要］岭南明珠体育馆工程屋盖系统采用新型的“斗拱型”穹顶钢结构。改变了以往穹顶结构由拱旋转而成的思维方法，工程是由水平环集结成体。穹顶的上半部为压缩环，下部为张力环，水平环采用H型钢组成的具有足够刚度的空间三角形钢桁架，通过立柱及外斜杆，层层叠加，最终形成稳固的穹顶。结构具有良好的通风采光的功能。
［关键词］斗拱型穹顶；水平环；压缩环；张力环；立柱；外斜杆
Column Arch Dome Steel Structure Design of Foshan Lingnanmingzhu Gymnasium/Zhou Minhui, Li Zhihong, Chen Wenxiang, Li Weifeng (The Architectural Design and Research Institute of Guangdong Province, Guangzhou 510010,China)
Abstract: The column arch dome steel structure is adopted in Foshan lingnan gymnasium roof system. The traditional dome is formed by rotated arch, but this dome is changed to the group of horizontal rings. On the top of the dome there is compress-ring, and on the bottom, tension-ring. The horizontal ring is composed of stereophonic triangle truss with H-style steel member. Through column and outer-inclined pipe, the horizontal ring is superimposed one by one. The roof system has the characters of well ventilation and natural lighting.
Keywords: column arch dome; horizontal ring; compress-ring; tension-ring; column; outer-inclined pipe