摘要
工程实践中可以把单波单跨的柱面网壳作为一个结构单体,在横向和纵向扩展形成单波多跨、多波单跨以及多波多跨的整体矩形平面屋盖系统。通过研究位于多波多跨柱面网壳4个不同区域的网壳单体,发现相同区域内的单体受力性能非常接近。并且依据不同区域网壳单体的约束情况建立相应的简化模型,通过分析比较简化模型和整体模型中相应单体的受力特性,可以得到二者的受力性能也比较接近。同时应用简化的单体模型考虑网壳杆件的截面选择和张弦柱面网壳中预应力设计的问题,也都能得到比较好的效果。
In engineering practices, the mono-wave and mono-span cylindrical lattice shell could be taken as a monomer, which can combine with others to extend to be multi-wave and multi-span cylindrical lattice shells. The mechanical properties of shell monomer in four different parts of the shell integer were studied. It is found that the monomer in the same part holds the similar properties. And four simplified analysis models were created according to the different boundary conditions for different parts. Comparing the properties of simplified models with shell monomers, the two models have the similar properties in the same part. Meanwhile the simplified model could be used to analyze the selection of cross sections for lattice shell bars and design of the pre-stress level for cables, which both could get satisfied results.
出处
《建筑结构》
CSCD
北大核心
2012年第9期103-106,136,共5页
Building Structure
关键词
柱面网壳
简化模型
截面选择
预应力
cylindrical lattice shell
simplified analysis model
selection of cross sections
pre-stress
