刘晓华，姜初伟，万  全，尹华钢，尹续峰
(总装备部工程设计研究总院，北京100028)

[摘要] 根据2008年北京奥运会开幕式导演创意团队的创意需求，通过对仿生折叠结构体系，自预应力钢索结构体系的研究，以及一些新型复合材料的创新使用，解决“梦幻地球”的隐身和现身，球体的整体稳定，升降台起升重量的限制等技术难题。开展了复杂折叠结构的有限元计算方法、影响因素等关键技术研究。在此基础上，创造了北京奥运会开幕式的“梦幻地球”。
[关键词] 北京奥运会开幕式；梦幻地球；仿生折叠结构；自预应力结构；复合材料

Structure Design of Rings Pucker Sphere in the Beijing Olympic Games Opening Ceremony
Liu Xiaohua, Jiang Chuwei, Wan Quan, Yin Huagang, Yin Xufeng
( Center for Engineering Design and Research Under the General Equipment Department,Beijing  100028, China)

Abstract: Based on the originality requirement of the Beijing Olympic Games Opening Ceremony director group, the bionics folding structure system, self-balanced prestressing cable structure system and some new composite material were studied, and the technic problems of  "dream earth" appear and disappear, sphere stabilization, and the weight limit of lift stage etc were resolved. The finite element calculation method for complex folding structure and its influence factor were researched. The "dream earth" in the Beijing Olympic Games Opening Ceremony has been created.
Keywords: the Beijing Olympic Games Opening Ceremony; dream earth; bionics folding structure; self-balanced prestress cable structure; composite ruaterial