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    張亞齊
    （中鐵建設(shè)集團(tuán)有限公司，北京 100040）

[摘要] 進(jìn)行了5個(gè)1/2縮尺的再生混凝土短柱抗震性能對(duì)比試驗(yàn)，模型DZB-1、DZB-2、DZB-3分別為配箍率0. 4%、0. 9%和1.29%的再生混凝土短柱，模型DZB-4、DZB-5為帶交叉筋再生混凝土短柱。分析了各模型的承載力、剛度及其退化過(guò)程、滯回特性、位移延性、耗能能力、破壞形態(tài)。試驗(yàn)及分析結(jié)果表明：隨著配箍率的增加，再生混凝土短柱的延性、承載力、耗能提高，但配箍率超過(guò)一定限度后，試件的延性、承載力、耗能等提高有限。
[關(guān)鍵詞] 再生混凝土；短柱；試驗(yàn)研究；抗震性能；配箍率
中圖分類號(hào)：TU375    文獻(xiàn)標(biāo)識(shí)碼：A  文章編號(hào)：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