环向折线形单层球面网壳结构的试验研究

Experimental research on circumferential folded single-layer reticulated spherical shell

环向折线形单层球面网壳的基本结构体系兼有单、双层球面网壳结构的受力特性,且节点为铰接,是一种新型的静定空间桁架结构.为改善结构受力、满足构造要求,可在基本结构体系基础上增设内圈环杆.本文对内圈环杆加强的环向折线形单层球面网壳结构进行了全跨、半跨荷载下的静力加载试验,并将试验数据与理论分析结果进行对比.分析结果表明:该结构具有良好的受力性能,试验数据与有限元分析结果之间的差异较小,理论分析正确.

The basic system of circumferential folded single-layer reticulated spherical shells,which inherits the merits of the double-layer space truss and the single-layer reticulated spherical shells,is a new kind of statically determinate space truss.In order to improve the structural mechanical behavior and satisfy the construction demand,several inner ring-bars are added to the basic system.Full-span and half-span static loading experiments were carried out on the circumferential folded single-layer reticulated spherical shell with inner ring-bars.The results from experiment and theoretical analysis were compared.It has been shown that the shells have a good mechanical performance,and the theoretical analysis method is correct.