摘要
应用大型通用有限元程序SAP2000,建立了安徽大学体育馆弦支穹顶屋盖钢结构的空间有限元计算模型.根据静力弹塑性(Push-over)分析的基本原理,对该屋盖钢结构在两种最不利工况组合下的弹塑性极限承载力进行了详细的计算.计算结果表明,应用Push-over分析方法,可找出结构首先出现塑性铰的薄弱部位,得到结构的非线性荷载-位移曲线.在最不利荷载工况组合下,可计算出该屋盖钢结构的弹塑性极限承载安全系数为2.33,结构满足安全性的要求.
In this paper a spatial finite element model of Anhui university gymnasium suspen - dome roof steel structure is established using a general program of SAP2000. According to the basic theory of push - over analysis, the elastoplastic ultimate load - beating capacities of the roof steel structure in two worst combinations for action effects are calculated in detail. The computational results indicate that by applying the push - over analysis method, the structural feeble parts which plastic hinges appear can be found and the structural nonlinear load - displacement curves can be gained. Under the worst combination for action effects, it can be caculated that the elastoplastic load bearing safty factors of the roof steel structure equal 2.33 and the structure is safe enough. The research in this paper can be a reference for the similar projects.
出处
《郑州大学学报（工学版）》
CAS
2005年第4期15-19,共5页
Journal of Zhengzhou University（Engineering Science）
基金
国家"十五"科技攻关项目(2002BA806B-4-3)
关键词
静力弹塑性分析
目标位移
极限承载力
大跨钢结构
push - over analysis
target displacement
ultimate load - bearing capacity
large span steel structure
