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(南京航空航天大學(xué)土木系，南京 210016)

［摘要］對(duì)5根再生粗骨料鋼筋混凝土梁及1根普通鋼筋混凝土梁的彎曲疲勞性能進(jìn)行了試驗(yàn)研究，比較了再生粗骨料鋼筋混凝土梁與普通鋼筋混凝土梁的開(kāi)裂荷載、疲勞破壞特征、疲勞壽命、疲勞荷載作用下的跨中撓度、裂縫寬度等，研究結(jié)果可為再生粗骨料鋼筋混凝土梁的設(shè)計(jì)和應(yīng)用提供參考。

［關(guān)鍵詞］再生混凝土；梁；疲勞性能

Research on fatigue property of reinforced concrete beams with recycled coarse aggregateWu Jin, Guo Xingchen(Nanjing University of Aeronautics and Astronautics, Nangjing 210016, China)

Abstract:The fatigue experiment of five recycled coarse aggregate concrete beams and one ordinary concrete beam has been made. Cracking load, fatigue failure characteristic, fatigue life, deflection of span-centre and maximal crack width of recycled coarse aggregate concrete beams and ordinary concrete beam have been investigated. The experimental results are helpful to the design and application of recycled coarse aggregate concrete beams.