The purpose of this paper is to investigate characters, initial prestress distribution and its quick calculation method of Geiger dome with outer truss torus.
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 calculating of initial prestress distribution is basic and important for analyzing of double-layer cable structure.
初始预应力分布的计算是双层索结构受力分析的基础。
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