摘要
单层网壳结构杆件截面尺寸和杆件分组方式直接影响结构的强度、刚度、局部稳定性以及整体稳定性,应存在一种合理的截面取值和杆件分组方式,使网壳结构受力合理、节约耗钢量.本文对跨度60m、矢高6m的单层凯威特网壳结构模型进行了线性静力分析、几何非线性整体稳定性分析和三种杆件分组方式下的截面优化设计,并详细分析了杆件分组和截面变化对结构整体稳定性的影响,给出了杆件分组、截面取值方式的建议,使结构用钢量少、受力较合理,同时杆件种类少、便于施工.
Different section size and bar group directly impacts t global stability of single layer latticed shell. There is a reasonab he strength, rigidity, le selection of section makes stress distribution more reasonable and save the steel volumes. The analysis, geometric nonlinearities global stab single layer Kiewit dome which a span of symmetry areas is 6, and number of radial structure due to the change on grouping and ility a node nalysis and sectional optimizatio linear n was local stability find size and bar group static mechanical carried out for the eters and a rise of 6 meters. Number of circle hoop cycles is 5. The impact on the overall stability of the cross-section is investigated. Finally, a suggestion was given about rods grouping and cross-sectional values which could cut down steel consumption, form logical bearing stress, and has much less types of bars which are easier to construcnon.
出处
《空间结构》
CSCD
北大核心
2014年第1期45-52,共8页
Spatial Structures
基金
国家自然科学基金项目(51379113)
关键词
网壳结果
线性静力分析
整体稳定性分析
截面优化
杆件分组
latticed shells
linear static mechanical analysis
global stability analysis
sectional optimization
bar group
