局部双层柱面网壳与单层网壳的对比分析

合理的局部双层网壳结构能够较好的解决单层网壳承载力低、整体稳定性较差以及双层网壳由于杆件、节点较多造成结构繁杂的缺点,近年来得到了较多的应用.以正交正放局部双层柱面空腹网壳为例,通过与相同跨度及截面下单层网壳的对比,详细阐述了局部双层网壳在承载力、稳定性及经济指标上的优越性,得出了一些对工程设计具有指导意义的结论.

Comparative analysis between local double-layer reticulated shells and single net shells

The reasonable local double-layer reticulated shell structure can overcome the weakness of the low bearing capacity and the poor overall stability of the single net shell and too many poles and panel points of the double-layer reticulated shell,so it has been widely applied recently.Taking the orthogonal local double-layer reticulated shell structure as an example,this paper expounds in detail the advantages of the local double-layer reticulated shell in the aspects of the bearing capacity,stability and economic efficiency compared with the other single net shells which have the same span and same section dimension,so as to get some guiding significance for engineering designs.