低周反复荷载作用下钢骨混凝土L形柱受力性能试验

李琪，吴佳杰（扬州大学建筑科学与工程学院，扬州 225009）

［摘要］通过3根钢骨混凝土L形柱和1根普通钢筋混凝土L形柱的低周反复加载试验，得到钢骨混凝土L形柱在压、弯、剪共同作用下的破坏形态。通过试验分析钢骨混凝土L形柱的延性、滞回特性、耗能能力、承载力退化、刚度退化，结果表明：钢骨混凝土L形柱的承载力随配钢量的增加而提高；延性随配钢量的增加而提高, 随轴压比的增大而降低；钢骨混凝土L形柱与钢筋混凝土L形柱相比，承载力高、延性好、耗能能力强、变形能力大，抗震性能优。

［关键词］   钢骨混凝土；L形柱；低周反复荷载；延性

中图分类号：TU398.7文献标识码：A文章编号：1002-848X(2011)01-0011-03

Experimental study of L-shaped section steel reinforced concrete column under low reversed cyclic loading

Li Qi, Wu Jiajie

（College of Civil Science and Engineering, Yangzhou University, Yangzhou 225009, China）

Abstract:Through the low reversed cyclic loading experiment of three L-shaped section steel reinforced concrete columns and one L-shaped section reinforced concrete column, the main destroyed patterns of L-shaped section steel reinforced concrete columns were obtained under compression, combining flexure and shear force. According to the experiment, the ductility, hysteresis, ability of energy consumption, bearing capacity degradation and stiffness degradation of L-shaped section steel reinforced concrete column were analyzed. The results show that the bearing capacity of L-shaped section steel reinforced concrete columns improves with the increase of the steel volume. The ductility raises with the increase of the steel volume and declines with the increase of the axial compression ratio. Compared to L-shaped section reinforced concrete columns, L-shaped section steel reinforced concrete columns have higher capacity, better ductility, larger energy dissipation capacity, more deformation capacity, and excellent seismic performance.

Keywords:steel reinforced concrete; L-shaped section column; low  reversed cyclic loading; ductility

作者简介：李琪，博士，教授， Email：lqgjh@126.com

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