扩高比对蜂窝框架抗震性能的影响.pdf.pdf

贾连光,等:扩高比对蜂窝框架抗震性能的影响
扩高比对蜂窝框架抗震性能的影响
贾连光李庆文孙宏达

沈阳建筑大学土木工程学院沈阳
( , 110168)
摘要研究不同扩高比对蜂窝钢框架抗震性能的影响以蜂窝式钢框架结构抗震性能试验为基础利用有限元
: 。,
软件建立合理的有限元模型。对开孔形式相同的蜂窝梁采用不同腹板扩高比框架结构,并模拟低周反复荷载作用
下的受力过程和破坏形式。得到了不同扩高比下蜂窝钢框架的滞回曲线、骨架曲线、刚度退化、延性等性能,并进
行对比与分析结果表明开孔形式相同时与扩高前实腹框架相比扩高比为时蜂窝梁框架结构均有
。: , , ~
较好的抗震性能扩高比为时抗震性能下降在钢框架设计中建议使用扩高比不大于的蜂窝框架
; 、 , ,
梁。
关键词:蜂窝钢框架;抗震性能;扩高比;孔型;有限元
EFFECT ON SEISMIC PERFORMANCE OF CELLULAR
FRAME DUE TO THE EXPANSION RATIO
Jia Lianguang Li Qingwen Sun Hongda
(School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,China)
ABSTRACT:It is researched the impact of the different expansion ratio on the cellular steel frame seismic
on the testing of cellular steel frame seismic performance,reasonable finite element model is
established by using the finite element the different expansion ratio frame structure using the
same opening form,the stress process and failure modes under low cyclic reverse load are simulated,thus getting
the hysteretic curve,skeleton curves,stiffness degradation,ductility and other behavior of the framework,which
are contrasted and results show that with the same openings form of cellular steel frame structure,
compared to the unexpanded solid-web frame,when the expansion ratio is ~,the seismic performance is
better;wh