肋环型索穹顶初始预应力分布的快速计算法  

A quick calculation method for initial prestress distribution of Geiger domes

作　　者：董石麟[1] 袁行飞[1] 

机构地区：[1]浙江大学空间结构研究中心,浙江杭州310027

出　　处：《空间结构》2003年第2期3-8,19,共7页Spatial Structures

基　　金：国家自然科学基金资助项目(50278086).

摘　　要：肋环型索穹顶是美国工程师Geiger根据Fuller的张拉整体结构思想开发的一种新型预张力结构,并最早应用在汉城奥运会的体操馆和击剑馆.考虑到该结构是一种轴对称结构,本文提出了确定初始预应力分布的快速计算法.该法从平面径向桁架节点平衡关系入手,推导了不设和设有内拉环的肋环型索穹顶预应力杆内力一般性的计算公式.对特定参数的索穹顶结构还给出了内力计算用表.通过本文提供的分析方法、计算公式和内力计算用表,可方便快速的确定肋环型索穹顶结构的初始预应力分布,为该类结构的进一步设计和力学性能分析提供基础.The Geiger dome was first proposed by Geiger after developing Fuller's idea of tensegrity and applied into the Gymnastics Arena and the Fencing Arena in Seoul. Considering the axial symmetry of the structure, a quick calculation method for initial prestress distribution of Geiger domes is presented in this paper and general equations corresponding to domes with an inner hoop and domes without the inner hoop are derived respectively. The tables of initial prestress distribution of domes with certain parameters are also given out. With this method the initial prestress distribution of Geiger domes can be quickly determined. The work here will benefit the further research of cable domes. 

关 键 词：索弯顶 肋环型索弯顶 张拉整体 预应力 桁架 节点 

分 类 号：TU394[建筑科学—结构工程]