中文摘要：

通过6个不同跨高比的钢纤维混凝土连粱在低周反复荷载作用下的试验，研究了钢纤维混凝土连梁在低周反复荷载作用下裂缝的开展、分布及破坏形态，根据实测的荷载一位移滞回曲线，研究了连梁的延性和耗能性能。研究结果表明，跨高比影响着钢纤维混凝土连梁的裂缝形态、极限承载力、延性和耗能性能，随着跨高比的增大，极限承载力逐渐下降，延性和耗能能力明显提高。

英文摘要：

Through the test on 6 steel fiber reinforced concrete coupling beams with different spandepth ratios un der the low cyclic reversal loading, the crack＇ s development, distribution and failure modes of the steel fiber rein forced concrete coupling beams were researched. Based on the measured loaddisplacement hysteresis curves, the performances of their ductility and energy dissipation behavior were studied. The results show that the effects of spandepth ratios on the crack modes, ultimate bearing capacities, ductility and energy dissipations of steel fiber re inforced concrete coupling beams are obvious. With the increase of spandepth ratios, the ultimate bearing capaci ties of the coupling beams decline gradually, but the ductility and energy dissipation improve obviously.