This paper presents the results of experimental and numerical investigations performed on nine one-third scaled exterior beam–column joints. They were first damaged in a displacement-controlled manner with constant column axial load and reverse cyclic load at the tip of the beams. The damaged joints were then repaired with new concrete and strengthened with hybrid-fibre-reinforced polymer laminates. These had combinations of natural and glass fibre mat and chopped laminations together with eight layers of glass-fibre-reinforced polymer wrapping. The aim was to restore and enhance seismic capacity parameters such as strength, stiffness, ductility and energy dissipation. It was observed that specimens with hybrid fibre mat laminations and glass-fibre wrapping exhibited a better performance in terms of ductility, with up to 81% increase. Numerical investigations were carried out using finite-element software to validate the experimental results. It was observed that the numerical results were in good agreement.

中文翻译：

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混杂纤维增强聚合物增强混凝土接头的抗震性能

本文介绍了对9个三分之一比例的外部梁柱节点进行的实验和数值研究的结果。它们首先以位移控制的方式受到破坏，在梁的顶端具有恒定的柱轴向载荷和反向循环载荷。然后用新混凝土修复受损的接缝，并用混合纤维增强的聚合物层压板进行加固。这些具有天然纤维和玻璃纤维毡，切碎的层压材料以及八层玻璃纤维增​​强的聚合物包裹物的组合。目的是恢复和增强抗震能力参数，例如强度，刚度，延性和能量耗散。观察到，具有混合纤维毡层压材料和玻璃纤维包裹物的样品在延展性方面表现出更好的性能，增加了多达81％。使用有限元软件进行了数值研究，以验证实验结果。观察到数值结果吻合良好。