低周反复荷载作用下钢-混凝土组合梁的延性

Ductility of composite steel-concrete beams under repeative and cyclic loading

通过对23根竖向低周反复荷载作用下钢-混凝土简支和连续组合梁进行了研究,根据试验结果计算了钢-混凝土组合梁在低周竖向反复荷载作用下的延性,从而分析不同剪力连接度、不同力比和不同横向钢筋配筋率对钢-混凝土组合梁延性的影响,将低周反复荷载作用下组合梁延性与单调荷载作用下组合梁延性的计算结果进行了对比。

The ductility of twenty three specimens of composite steel - concrete beams under the repeative and cyclic loading was calculated. The effect of the relations between ductility and the ration of transverse reinforcement, the ration of lengthways＇ reinforcement , the degree Of shear connection on ductility of composite steel - concrete beam was analyzed. The ductility under repeative and cyclic loading was compared with tha under monotonic loading.