A model of CFRP-reinforced beam-column joint is established with OpenSees finite-element software platform based on open source simulation.Considering the seismic condition of specimens under different concrete strength,the model has been tested under quasi-static cycle load.It was verified as follows.Firstly,the beam end bearing capacity increases with the constant improvement of the steel bar intensity.At the same time,the component of the energy consumption increases. With the bearing capacity of CFRP reinforcement increasing,the hysteresis loop gradually tends to be full in the same reinforcement of nodes.Secondly,with the increase of loading,the performance of CFRP constraint reinforced concrete joint will become more and more obvious,restricting the deformation of the concrete beam-column joints.OpenSEES can simulate the constraint function of the"T"type of beam-column joints CFRP effectively.%基于开源系统的 OpenSEES有限元软件平台,建立了CFRP加固"T"型梁柱节点的模型,考虑不同混凝土强度情况下试件的抗震情况,对该模型进行了低周反复荷载的模拟研究.分析表明:①随着钢筋强度的不断提高,梁端承载力不断增加,与此同时,构件的耗能不断增加.相同配筋的节点,CFRP加固的节点承载力增加,滞回环逐渐趋于饱满;②荷载的增加可以增强碳纤维布约束钢筋混凝土节点的性能,OpenSEES可以有效地模拟 CFRP对"T"型梁柱节点的约束作用.
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