四角锥体系三层网架的结构特性分析

The structure characteristic analysis for pyramid system triple-layer space trusses

三层网架是双层网架的有机组合 ,在大跨度空间结构中的应用日益广泛。对于形式更加丰富的三层网架 ,有必要对其结构特性方面的问题进行深入细致的研究。本文对两种形式新颖的三层网架进行了计算分析 ,并与通常采用的几种形式三层网架进行了比较 ,得出一些结论。

Triple-layer space trusses are organic combination of double-layer space trusses. They are used increasingly and widely in large span space structures. As for much more types of triple-layer space trusses, it is necessary to particularlty analyze their structure characteristics. In this paper, two novel types of triple-layer space trusses were studied. Compared with this two novel types, three customarily used types were studied too.In the end some conclusions were reached.Based on the analysis, some suggestions for engineering design of triple-layer space trusses are provided.