一种循环搭接的新型开合结构

通过总结目前开合结构的类型和开启方式，提出一种有别于一般支承方式的新型开合结构。这种结构通过前后粱之间的循环搭接，以及梁与梁之间支承点的移动来实现整个结构的开合功能。结合屋面单元运动特点的分析，论述这种结构在移动开合上的可能性，并总结出这种结构具有跨度小、划分屋盖单元小，可减小屋盖单元重量，提高屋盖移动效率的优点，能应用于有开合要求的会场或体育场馆的屋盖结构。

A NEW TYPE OF RETRACTABLE ROOF STRUCTURE COMPOSED OF UNIT BRACED CYCLICALLY

By summarizing the current type and opening mode of retractable roof structure, a new type of retractable roof structure,which is different from general supporting mode,is put forward. This kind of structure is supported circulatory between the front beam and the back beam, and realize the switching function by moving the bearing point between the front beam and the back beam. By analyzing the characteristics of roof unit movement, the feasibility of movement of roof is considered, and concluded that, the roof unit of this kind of structure has advantage which is small span, light weight and easy to be move. This kind of structure can be applied to the venue and stadium roof with switching function.