(南京航空航天大学土木系，南京 210016)

［摘要］对5根再生粗骨料钢筋混凝土梁及1根普通钢筋混凝土梁的弯曲疲劳性能进行了试验研究，比较了再生粗骨料钢筋混凝土梁与普通钢筋混凝土梁的开裂荷载、疲劳破坏特征、疲劳寿命、疲劳荷载作用下的跨中挠度、裂缝宽度等，研究结果可为再生粗骨料钢筋混凝土梁的设计和应用提供参考。

［关键词］再生混凝土；梁；疲劳性能

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.