对肋环型局部双层球面网壳结构进行了稳定性分析。
Analysis of stability behaviors of partial double-layer cable dome is done.
分析表明：对带缺口的肋环型单层网壳，增加斜杆对结构性能有很大的改善，用钢量反而降低；
The results show that: it has good improvement when some pole in the shell, at same time, it reduced the investment;
目的研究具有外环桁架的肋环型索穹顶的构件布置和特点，提出确定初始预应力分布的快速计算法。
The purpose of this paper is to investigate characters, initial prestress distribution and its quick calculation method of Geiger dome with outer truss torus.
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