摘要
文章通过对2根薄壁圆钢管再生混凝土柱在定常轴力和水平往复荷载作用下的拟静力试验,研究其破坏形态和滞回特性,分析其承载力、刚度退化、延性及耗能能力等抗震性能。试验结果表明:试件破坏时柱根部200mm范围内钢管壁发生屈曲外鼓;低周反复荷载下滞回曲线较为饱满,延性系数在4.0左右,说明薄壁钢管再生混凝土柱具有良好的延性性能和耗能能力。
Quasi-static experiment of two circular thin-walled steel tubular columns filled with recycled aggregate concrete under axial load and cyclic lateral load was conducted. The failure pattern and hys- teresis performance of the columns were studied, and their seismic behavior, such as bearing capacity, stiffness degradation, ductility, energy dissipation capacity and so on, was analyzed. The experimen- tal results show that the steel tube wall which is less than 200 mm away from the roots of the columns is buckling when the specimens are destroyed. The hysteresis curves of the specimens are plump in shapes under low cyclic load, and the ductility coefficient is around 4.0. These results illustrate that the circular thin-walled steel tubular column has good ductility and energy dissipation capacity.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2016年第3期364-367,432,共5页
Journal of Hefei University of Technology：Natural Science
基金
住房与城乡建设部科学技术计划资助项目(2013-K4-46)
关键词
薄壁钢管
再生混凝土柱
滞回曲线
抗震性能
thin-walled steel tube
recycled aggregate concrete-filled column
hysteresis curve
seismic behavior
