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多波多跨柱面网壳结构受力特性及简化分析方法
刘传佳,董石麟
摘 要
刘传佳,董石麟
(浙江大学空间结构研究中心,杭州310027)
 
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。
关键词]柱面网壳;简化模型;截面选择;预应力
中图分类号:TU399文献标识码:A文章编号:1002-848X(2012)09-0103-04
 
Simplified analysis method and research on mechanical properties of Multi-wave and multi-span cylindrical lattice shells
Liu Chuanjia, Dong Shilin
(Space Structure Research Center, Zhejiang University, Hangzhou 310027, China)
 
Abstract: 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.
Keywords: cylindrical lattice shell; simplified analysis model; selection of cross sections; prestress
作者简介:刘传佳,硕士,Email:cjlyyzju@gmail.com。
 
参考文献
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