多层钢木组合框架整体稳定承载力分析
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摘要
在进行框架结构整体稳定性分析时,传统的计算长度系数法没有考虑结构同层柱间及层与层之间的相互支援作用,将结构的整体稳定验算化为构件的稳定验算是不准确的.利用负刚度、层刚轴比系数等概念,对一榀钢框架和一榀钢木组合框架进行了整体稳定承载力计算.结果表明:钢框架柱引入木材后,不仅使得钢木组合框架的整体稳定承载力较钢框架结构有所提高,还可以使建筑有较好的美观效果,可在住宅建筑中推广使用.
In the analysis of the overall stability of the frame structure,the traditional effective length method fails to consider the interaction of columns at the same story and the inter-story interaction,which is inaccurate to check the overall stability of the structure into a stable checking calculation of the component. The overall stability bearing capacity of a steel frame and a steel-timber composite frame is calculated by using the concepts of negative stiffness and layer stiffness axis ratio. The results show that the overall stability bearing capacity of the steeltimber composite frame is not only increased but also the building has better aesthetic effect after the timber is added into the steel frame,which can be widely used in the residential buildings.
In the analysis of the overall stability of the frame structure,the traditional effective length method fails to consider the interaction of columns at the same story and the inter-story interaction,which is inaccurate to check the overall stability of the structure into a stable checking calculation of the component. The overall stability bearing capacity of a steel frame and a steel-timber composite frame is calculated by using the concepts of negative stiffness and layer stiffness axis ratio. The results show that the overall stability bearing capacity of the steeltimber composite frame is not only increased but also the building has better aesthetic effect after the timber is added into the steel frame,which can be widely used in the residential buildings.
引文
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[2]唐中义.绿色建筑设计方案的综合评价研究[D].西安:长安大学,2014.
[3]王小盾,陈志华,白晶晶,等.钢木组合结构的研究现状与发展前景[C]//2011全国钢结构学术年会论文集.银川:国家钢结构工程技术研究中心,2011:654-657.
[4]潘福婷,蒋亚琼,王璇.钢木组合悬臂梁在横向荷载作用下的受弯性能分析[J].新余学院学报,2017,22(1):92-96.
[5]刘洋,陈志华,安琦,等.轻型钢木组合剪力墙抗侧性能试验研究[J].天津大学学报,2017,50(增刊):78-83.
[6]童根树.按照整层模式失稳的框架稳定性计算[J].西安建筑科技大学学报,2006,38(3):297-301.
[7]童根树.计算长度系数的物理意义及对各种钢框架稳定设计方法的评论[J].建筑钢结构进展,2004,6(4):1-8.
[8]翁赟,童根树.考虑层与层相互支援的框架层抗侧刚度[J].土木工程学报,2012,45(4):71-80.
[9]舒兴平,沈蒲生,尚守平.钢框架结构二阶弹塑性稳定极限承载力试验研究[J].钢结构,1999,14(4):19-22.
[10]郝际平,田炜烽,王先铁.多层有侧移框架整体稳定的简便计算方法[J].建筑结构学报,2011,32(11):183-188.
[11]童根树.钢结构的平面内稳定[M].北京:中国建筑工业出版社,2005:137-203.
[12]潘福婷,王艳华,吴京.钢木组合柱的有限元分析及其设计[J].阴山学刊,2016,30(1):26-29