连云港体育馆屋面弦支穹顶结构分析与设计

Structural Analysis and Design of Suspendome Roof of Gymnasium of Lianyungang

弦支穹顶结构体系是在单层网壳和张拉整体的基础上发展起来的一种新型空间结构。详细介绍了上部为肋环型单层网壳的弦支穹顶结构体系在连云港体育馆屋面中的具体应用。包括屋盖结构体系的布置特点,荷载取值,初始预应力的确定原则,结构力学性态分析以及拉索与撑杆连接节点弹塑性分析。最后,对该结构作了弹塑性极限承载力研究,并就结构的安全度作了探讨。

The suspendome system is a new-style space structure developed on the basis of single-layer dome structures and tensegrity systems. The application of suspendome system, in which upper rigid structure is single-layer ribbed dome, is introduced in roof of Lianyungang gymnasium, including the characteristic of the roof structure system, loads calculation, the principle of prestress value, static performance analysis and elasto-plastic analysis of the connection joint of cable and strut. Finally, the researches of structural ultimate bearing capacity have been carried out effectively by using elasto-plastic finite element method, and the structural safetv has been discussed.