【摘要】 目的对运用于框架结构抗震加固的方钢管混凝土密柱型抗侧力体系进行理论分析和试验验证,为实际工程应用提供参考.方法通过对增设方钢管混凝土密柱型抗侧力加固体系的双榀框架结构在竖向荷载及水平低周反复荷载共同作用下的拟静力试验,详细分析抗侧力体系的破坏特征,变形能力及力学性能.结果方钢管混凝土密柱型抗侧力体系滞回曲线形状饱满,抗侧力体系和原框架的协同工作性能良好.方钢管混凝土柱表现出较强的变形能力,钢管的延性系数均大于4,原框架承载力约提高了18%.结论按理论公式计算设计的抗侧力加固体系各力学性能参数与试验数据基本吻合,滞回曲线形状饱满,抗侧力体系和原框架的协同工作性能良好.更多还原

【Abstract】 Seismic reinforcement of the framework used in the CFST dense cylindrical lateral force system for theoretical analysis and experimental verification,provide a reference for practical engineering applications.According to the pseudo static test on two specimens of framework including the CFST dense cylindrical lateral force system,which is subjected to the vertical loads and the horizontal cyclic loads,failure characteristics,deformation and mechanical properties of the lateral force system are analyzed.The shape of the load-displacement hysteresis curve is very plump.The lateral force system and the existing framework work together in good.Significantly,the system displays strong deformation.Ductility factor of steel pipe is greater than 4.Approximately,the original framework of the capacity increases of 18%.Parameters of the mechanical properties of the lateral force reinforcement system designed according to the theoretical formula are basically consistent with the experimental data.The shape of hysteresis curve of the CFST column left and right is quite full.The Lateral Force System and the existing framework show good work performance in the same place.更多还原