摘要
为了研究钢筋混凝土框架结构加固后的抗震性能,利用ANSYS软件建立三种框架模型(无加固模型KJ-1,碳纤维加固模型KJ-2,混合加固模型KJ-3),进行低周反复荷载数值分析,得到的KJ-1的力学性能指标和荷载位移曲线与试验数据比较吻合,并对三个框架模型的滞回曲线、骨架曲线、延性进行对比.研究表明:加固后框架结构的承载力、延性得到很大提高;混合加固模型的承载能力和延性优于碳纤维加固模型的,具有较强的抗震能力.
In order to research the overall seismic performance of the strengthened reinforced concrete frame, three models of RC frames have been established by ANSYS： an unstrengthened model of RC frame KJ-1, a RC frame model KJ-2 strengthened by carbon fiber polymer, a RC frame KJ-3 strengthened by both carbon fiber polymer and steel plate. The three frame models were numerically analyzed under low-cycle and repeated load. The mechanical index and the load-displace- ment curves of model KJ-1 coincided well with the experimental data. While the hysteresis curve, the skeleton curve and the ductility of the three frame models were compared with each other. The study shows that： the bearing capacity and the duc- tility of the framework are greatly improved; the mixed strengthened model K J-3 is superior to model K J-2 strengthened by carbon fiber, and has a stronger seismic capacity.
出处
《天津城市建设学院学报》
CAS
2012年第3期169-173,共5页
Journal of Tianjin Institute of Urban Construction
