不同跨高比钢纤维混凝土连梁的延性和耗能性能  

Ductility and energy dissipation of steel fiber reinforced concrete coupling beams with different span-depth ratios

作　　者：赵军[1] 李斌[1] 李光辉[1] 

机构地区：[1]郑州大学土木工程学院,河南郑州450001

出　　处：《世界地震工程》2012年第4期17-22,共6页World Earthquake Engineering

基　　金：国家自然科学基金(51078333);教育部新世纪优秀人才支持计划(NCET-10-0125)

摘　　要：通过6个不同跨高比的钢纤维混凝土连梁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-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。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.

关 键 词：钢纤维混凝土连梁 跨高比 承载力 延性 耗能 

分 类 号：TU375.1[建筑科学—结构工程]