[提要]  进行了6个玻璃纤维( GFRP)片材加固混凝土梁柱节点在低周反复荷载作用下的试验研究，结果表明GFRP片材加固节点是一个有效的加固方法，节点的抗剪强度和延性比加固前有较大的提高。基于试验结果提出了考虑混凝土、箍筋、GFRP片材共同作用的节点抗剪承载力计算方法。计算结果和试验数据基本吻合。
[关键词]  GFRP片材  混凝土梁柱节点  抗震性能  抗剪承载力

Six full-scale concrete beam-column joints externally wrapped by GFRP sheet under the cyclic reversed loading are tested for seismic strengthening. The experiment results indicate that this strengthening technique is highly effective. Both shear strength and displacement ductility of the joints strengthened with GFRP sheet are higher than those of the original joints. A method to calculate ultimate shear capacity of beam-column joint core region is presented, with consideration of the actions of concrete, steel hoop and GFRP sheet. The results agree well with the experimental results.
Keywords: GFRP sheet; RC beam-column joint; seismic behavior; ultimate shear capacity