摘要
郴州市体育场屋盖采用大跨悬挑钢桁架结构。针对其跨度大、形状不规则的特点,详细阐述了结构的体系布置情况,并利用有限元软件对屋盖结构体系进行了受力、变形、模态和整体屈曲分析;介绍了支座类型的选择和减小支座水平推力的措施;对固定铰支座和弹性支承屋盖结构进行了静力和地震作用分析,探讨了上下部结构协同工作对屋盖抗震性能的影响。分析结果表明,该屋盖结构体系合理,整体性强,抗震性能良好。
The roof of Chenzhou Stadium adopts large-span cantilever steel truss structure. On basis of its large span and irregular shape, the system arrangement of this structure was elaborated. Through finite element analysis, the force, deformation, modality and buckling system of the roof structure were discussed. The choice of the support type and the measures of reducing the horizontal thrust on the support were also introduced. According to the analysis of the fixed hinged support and elastic-support roof structure under static force and seismic action, the effect of the synergistic work of the top and bottom structures to the seismic performance of the roof was discussed. The result shows that this roof structure is a rational system with strong integrity and good seismic performance.
出处
《建筑结构》
CSCD
北大核心
2014年第12期58-62,99,共6页
Building Structure
关键词
钢屋盖
结构设计
屈曲分析
大跨悬挑结构
弹性支承
steel roof
structural design
buckling analysis
large-span cantilever structure
elastic-support
