柱面空腹网壳结构的稳定性和参数分析
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摘要
为了确定柱面空腹网壳结构从稳定平衡状态变为不稳定平衡状态的临界荷载和屈曲后的形态,深入研究柱面空腹网壳结构的稳定性。采用有限元分析方法,在对柱面空腹网壳结构进行计算分析的基础上,进一步进行屈曲模态分析及非线性参数化屈曲分析。目前方钢管构成的空腹网壳在已有研究中并不多见,以方钢管构成的空腹网壳结构为主要研究对象,分析该类结构矢跨比、结构厚度、截面尺寸等参数变化对结构极限承载力的影响,从而得出在不同参数变化下柱面空腹网壳结构的稳定性情况。
In order to determine the critical load and the buckling mode of a cylindrical vierendeel shell latticed changed from stable equilibrium state to unstable equilibrium state,the stability of cylindrical vierendeel shell was studied deeply.Based on the finite element analysis of the cylindrical vierendeel latticed shell,the buckling mode and nonlinear parametric buckling analysis were further carried out. Currently,there are far researches on the cylindrical vierendeel latticed shell composed of square steel tubes. Therefore,the paper took the cylindrical vierendeel latticed shell composed of square steel tubes as the main object of research. The effects of different parameters such as span ratio,structure thickness and section size on the ultimate bearing capacity were analyzed. Thus,the structure's stability under different parameters was obtained.
In order to determine the critical load and the buckling mode of a cylindrical vierendeel shell latticed changed from stable equilibrium state to unstable equilibrium state,the stability of cylindrical vierendeel shell was studied deeply.Based on the finite element analysis of the cylindrical vierendeel latticed shell,the buckling mode and nonlinear parametric buckling analysis were further carried out. Currently,there are far researches on the cylindrical vierendeel latticed shell composed of square steel tubes. Therefore,the paper took the cylindrical vierendeel latticed shell composed of square steel tubes as the main object of research. The effects of different parameters such as span ratio,structure thickness and section size on the ultimate bearing capacity were analyzed. Thus,the structure's stability under different parameters was obtained.
引文
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[6]程欣,王惠刚.钢框架非线性分析方法评述[J].钢结构,2016,31(6):1-6.
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[12]简骁,金声.一种基于有限元的薄壁杆件畸变屈曲分析方法[J].钢结构,2017,32(1):20-24.
[2]陈春红,黄勇.几种空腹网壳的自振特性理论研究[J].贵州大学学报(自然科学版).2011,28(4):90-95.
[3]张兆通,杨晓明.柱面空腹网壳动力特性分析[J].青岛理工大学学报,2013,34(1):44-47.
[4]朱伯芳.有限单元法原理及应用[M].北京:中国水利水电出版社,1998.
[5]张兆通.双层柱面空腹网壳的动力响应分析[D].青岛:青岛理工大学,2011:12.
[6]程欣,王惠刚.钢框架非线性分析方法评述[J].钢结构,2016,31(6):1-6.
[7]万馨,吕昊.某单层肋环型球面网壳结构的稳定分析[J].钢结构,2015,30(11):6-9.
[8]杜文风,朱黎明,张慧.空腹网壳结构的静力稳定性与极限承载力研究[J].郑州大学学报(工学版),2008,29(3):99-102.
[9]沈世钊.网壳结构的稳定性[J].土木工程学报,1999,32(6):11-19.
[10]鲍科峰,马文宏.平面空腹拱静力性能分析[J].工业建筑,2006,36(3):91-94.
[11]CRISFIELD M A.A Fast Incremental Solution Procedure that Handle“Snap-Through”[J].Computers and Structures,1981,13:55-62.
[12]简骁,金声.一种基于有限元的薄壁杆件畸变屈曲分析方法[J].钢结构,2017,32(1):20-24.