（内蒙古科技大学建筑与土木工程学院， 包头 014010）

［摘要］为了研究钢骨-钢管混凝土柱的抗震性能和塑性铰长度，以轴压比和含骨率为变化参数，对4个钢骨\|钢管混凝土柱试件进行拟静力试验，得到了该类型柱的破坏模式及其塑性铰的长度范围。研究结果表明：该类型柱在高轴压比下的滞回曲线仍呈稳定丰满的梭形，具有较好的延性性能；等效塑性铰长度是其截面高度的0-85～0-92倍。并对试验研究和理论分析得到的塑性铰长度进行了对比，结果吻合较好。

［关键词］组合柱； 塑性铰长度； 轴压比； 含骨率

中图分类号：TU398文献标识码：A文章编号：1002-848X(2017)01-0100-04

Research on plastic hinge length of steel tubular column filled with steel-reinforced concrete

Yang Deshan

（Architecture and Civil Engineering Institute, Inner Mongolia University of Science and Technology, Baotou 014010, China）

Abstract:To study the seismic performance and plastic hinge length of steel tubular column filled with steel-reinforced concrete, quasi-static tests were carried out on four steel tubular columns filled with steel-reinforced concrete with different axial compression ratios and steel ratios. The failure pattern and the length scope of plastic hinge were gotten. The results show that the hysteresis loop of this type of columns still shows a plump spindle-shape at a higher axial compression ratio and this type of columns have better ductility. Equivalent plastic hinge lengths of specimens are 0-85～0-92 times the height of the cross section. Plastic hinge lengths calculated by the tests and theoretical analysis are compared, results are similar.

Keywords:composite column; plastic hinge length; axial compression ratio; steel ratio

*内蒙古科技大学创新基金项目（2012NCL041）。

作者简介：杨德山，硕士，Email：yangdeshan1989@163.com。