中文摘要：

为研究高强再生混凝土梁的抗弯性能,进行了3个足尺矩形截面简支梁三分点单向重复荷载下抗弯性能试验研究.3个试件的配筋一致,几何尺寸相同.试件1为高强普通混凝土梁,试件2为50％再生粗骨料取代率的高强混凝土梁,试件3为全再生粗骨料的高强混凝土梁.分析了各试件的承载力、延性、耗能、破坏特征等.研究表明：高强再生混凝土矩形截面梁与普通高强混凝土矩形截面梁相比,在受力过程中,均经历了弹性、开裂、屈服和破坏四个过程;相同设计参数的高强再生混凝土梁与普通高强混凝土梁相比,承载力较为接近,但延性较好.

英文摘要：

In order to study the flexural behavior of high strength recycled concrete beam,the pure flexural test of three full scale rectangle section concrete beam were carried out under the monotonic repeat loading.The reinforcing details and the geometric dimensions are the same for the three specimens.The first specimen is a high strength common concrete beam,and second specimen is a half recycled coarse aggregate high strength concrete beam and the third specimen is a full recycled coarse aggregate high strength concrete beam.The bearing capacity,ductility,energy dissipation and failure characteristics were analyzed.Research shows that：the high strength recycled concrete beam experiences the elastic,crack,yield and fracture stage during the whole loading process.With regard to the recycled high strength concrete beam,compared with the common high strength concrete beam,the bearing capacity is almost the same,while the ductility is better.