张亚齐
    （中铁建设集团有限公司，北京 100040）

[摘要] 进行了5个1/2缩尺的再生混凝土短柱抗震性能对比试验，模型DZB-1、DZB-2、DZB-3分别为配箍率0. 4%、0. 9%和1.29%的再生混凝土短柱，模型DZB-4、DZB-5为带交叉筋再生混凝土短柱。分析了各模型的承载力、刚度及其退化过程、滞回特性、位移延性、耗能能力、破坏形态。试验及分析结果表明：随着配箍率的增加，再生混凝土短柱的延性、承载力、耗能提高，但配箍率超过一定限度后，试件的延性、承载力、耗能等提高有限。
[关键词] 再生混凝土；短柱；试验研究；抗震性能；配箍率
中图分类号：TU375    文献标识码：A  文章编号：1002-848X(2011) Sl-0272-05

Experimental study on the seismic behavior of recycled concrete short columns with different stirrup ratios
    Zhang Yaqi
    (China Railway Construction Group Co., Ltd., Beijing 100040, China)

Abstract: A comparative study is conducted on the seisnuc behaviors of five l/2 scale RC short column models. The stirrup ratios of the first three models are 0.4%, 0.9% and l.29% respectively. The forth and the fifth are short columns with crossed reinforcing bars on the basis of the first two models. The stiffness and its degradation, load - carrying capacity, ductility, hysteretic behavior, energy dissipation and failure phenomena of each short column were analyzed. Through experimental analysis, it proved that the speed of stiffness attenuation of RC short column with low stirrup ratios is quicker. The larger of stinup ratios, the lesser of shear damage degree, the higher of bearing capacity and ductility, the lower of the increased range of bearing capacity and ductility.
Keywords: recycled concrete; short columns; experimental study; seismic behavior; stinup ratio