摘要
为揭示横向配箍率对组合梁抗震性能的影响规律，对低周反复荷载作用下10榀不同横向配箍率钢-混凝土组合梁进行试验研究，对不同横向配箍率钢-混凝土组合梁的破坏形态、滞回规律、耗能能力、刚度退化规律和延性等抗震性能进行深入分析，观测和记录试验中组合梁的纵向裂缝情况，根据试验研究与分析结果，建议钢-混凝土组合梁正弯矩区横向配箍率在0．5％～0．7％，而负弯矩区的横向配箍率在0．7％～0．8％。
For researching the influence of horizontal reinforcement ratio on seismic behavior of steel-concrete beams, experiments are conducted on ten specimens of composite steel-concrete beams under the repeated and cyclic loadings. With the results of these experiments, it is analyzed that breaking appearance, hysteresis curves, ductility and other seismic behavior of steel-concrete beams and written down the time when longitudinal cracking appeared in concrete flange in tension. By researching the experimental results, it is suggested that the rational horizontal reinforcement ratio of steel- concrete beam in positive moment area should be 0.5% to 0.7% and in negative moment area be 0.7% to 0.8% .
出处
《工业建筑》
CSCD
北大核心
2007年第8期1-4,13,共5页
Industrial Construction
基金
国家自然科学基金资助项目(50208018
50438020)
关键词
钢-混凝土组合梁
低周反复荷载
横向箍筋
抗震性能
composite steel-concrete beam repeated and cyclic loading horizontal reinforcement seismic behavior
