Three full-scale exterior beam–column joints with anti-seismic steel reinforcement were tested under quasi-static cyclic loading and column axial compressive loading. The test variables were column axial load ratio and joint core hoop reinforcement ratio. Experimental results, including failure mode, hysteretic curve, ductility, energy dissipation, stiffness degradation, and decoupling of deformations, were presented and analyzed. The tests revealed that the anti-seismic rebar resulted in good joint seismic performance and that column axial load ratio and joint core hoop reinforcement ratio impose limited influence of joint performance when the joint failed in beam flexural failure. The calibrated finite element models developed based on OpenSees were then used to simulate the behavior of joint specimens. Parametric studies via finite element modeling were performed to study the influence of various parameters on the performance of beam–column joints.

中文翻译：

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具有高性能钢筋的外梁柱节点的抗震性能：实验和数值研究

在准静态循环荷载和柱轴压荷载作用下，对三个全尺寸抗震钢筋外梁柱节点进行了试验。试验变量为柱轴荷载比和接头芯箍配筋率。实验结果，包括失效模式、滞回曲线、延展性、能量耗散、刚度退化和变形解耦，被呈现和分析。试验表明，抗震钢筋具有良好的节点抗震性能，当节点发生梁弯曲破坏时，柱轴荷载比和节点芯环配筋率对节点性能的影响有限。然后使用基于 OpenSees 开发的校准有限元模型来模拟接头试样的行为。