钢骨混凝土复合受扭柱抗震性能试验研究  

Experimental Research on Seismic Performance of Steel Reinforced Concrete Columns Under Combined Torsion

作　　者：邱昕玥 邵永健[1] 谢强 QIU Xinyue;SHAO Yongjian;XIE Qiang(College of Civil Engineering,Suzhou University of Science and Technology,Suzhou 215011,China)

机构地区：[1]苏州科技大学土木工程学院,江苏苏州215011

出　　处：《建筑钢结构进展》2024年第9期76-85,共10页Progress in Steel Building Structures

摘　　要：为研究含H型钢的钢骨混凝土柱在压弯剪扭复合受力作用下的抗震性能,对7个含H型钢的钢骨混凝土柱和1个钢筋混凝土柱进行拟静力试验,探究了扭弯比、轴压比、配箍率等对试件抗震性能的影响,分析了试件在低周反复加载试验中裂缝产生和发展的规律及破坏特征,讨论了各试件的扭矩-扭率滞回曲线、骨架曲线、耗能能力、延性、刚度退化和损伤分析。结果表明:含H型钢的钢骨混凝土柱在复合受力状态下发生受扭破坏,其扭矩-扭率滞回曲线呈捏拢的S形,相较于普通钢筋混凝土试件,其承载能力和抗震性能更优。增大扭弯比、轴压比、配箍率以及采用箍筋焊接并配置栓钉能提高试件承载能力,但提高配箍率和配置栓钉会使试件刚度退化速率加快。In order to study the seismic performance of H-shaped steel reinforced concrete columns under combined compression,bending,shear and torsion loads,a quasi-static test was carried out on 7 H-shaped steel reinforced concrete columns and 1 reinforced concrete column to explore the effects of torsion-bending ratio,axial compression ratio and stirrup ratio on the seismic behavior of specimens.In this paper,the regularity and failure characteristics of cracks in column specimens during low-cycle reversed loading test are analyzed,and the torque-torsion hysteresis curves,skeleton curves,energy dissipation capacity,ductility,stiffness degradation and damage analysis of specimens are discussed.The results show that the H-shaped steel reinforced concrete column is torsional failure under combined stress and its torque-torsion hysteresis curve presents an S shape.However,compared with common reinforced concrete specimens,its bearing capacity and seismic performance are better.Increasing the torsion-bending ratio,axial compression ratio,stirrup ratio and welding with stirrups and configuring bolts can increase the load-bearing capacity of specimens,but increasing the stirrup ratio and configuring bolts will accelerate the stiffness degradation rate of specimens.

关 键 词：钢骨混凝土柱 复合受扭 抗震性能 拟静力试验 抗扭承载力 参数分析 

分 类 号：TU398.9[建筑科学—结构工程]