摘要
对一榀缩尺比为1∶3的单跨双层半刚性框架-纵横密肋加劲防屈曲低屈服点钢板剪力墙结构进行了低周往复加载试验。从滞回性能、承载力、刚度、耗能能力、结构延性及破坏模式等方面对纵横加劲的防屈曲性能及低屈服点钢内嵌板的工作性能进行评价。研究结果表明:纵横密肋有效延缓了内嵌板的屈曲,提高了结构的延性和极限承载力;低屈服点钢内嵌板与半刚性框架具有良好的协同工作性能,内嵌板采用低屈服点钢可有效提高结构的延性和耗能性能;整体结构具有理想的破坏模式,试件破坏主要由内嵌板的区格内局部屈曲、撕裂和框架塑性铰的形成控制。
The experiment was carried out under low cyclic loading on a 1 ∶ 3 scale two-story and one-bay semi-rigid connection frame with vertical and horizontal stiffened buckling-restrained shear wall with low yield point steel plate.Buckling-restrained performance of the vertical and horizontal stiffeners and the overall performance of semi-rigid connection frame with low yield point steel infill plate were evaluated according to the analysis of hysteretic behavior,bearing capacity,energy dissipation,ductility and failure mode.The analysis results show that vertical and horizontal stiffeners perform well in restraining the buckling of the infill plate and improve the ductility and ultimate bearing capacity of the structure,the failure mode of the steel plate is local buckling.There is good overall performance between low yield point steel infill plate and the semi-rigid frame.The infill plate of the low yield point steel can improve the ductility and energy dissipation of the structure.The structure has desirable failure mode,the specimen destruction is mainhy controlled by the infill plate local buckling,tearing and the plastic hinge of the frame.
出处
《建筑结构》
CSCD
北大核心
2015年第10期5-9 31,31,共6页
Building Structure
基金
国家自然科学基金项目(51178381)
国家自然科学基金青年项目(51408461)
陕西省教育厅科研计划项目(14K1395)
关键词
防屈曲剪力墙
纵横加劲
低屈服点钢
抗震性能
低周往复加载试验
buckling-restrained shear wall
vertical and horizontal stiffened
low yield point steel
seismic performance
low cyclic loading experiment
