- 摘 要
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歐陽煜1,2 黃奕輝3 錢在茲4（1 上海大學(xué) 200092； 2 同濟(jì)大學(xué) 上海 200092； 3 華僑大學(xué) 福州 362011； 4 浙江大學(xué) 杭州 310027）
[提要] 進(jìn)行了6個(gè)玻璃纖維( GFRP)片材加固混凝土梁柱節(jié)點(diǎn)在低周反復(fù)荷載作用下的試驗(yàn)研究，結(jié)果表明GFRP片材加固節(jié)點(diǎn)是一個(gè)有效的加固方法，節(jié)點(diǎn)的抗剪強(qiáng)度和延性比加固前有較大的提高?；谠囼?yàn)結(jié)果提出了考慮混凝土、箍筋、GFRP片材共同作用的節(jié)點(diǎn)抗剪承載力計(jì)算方法。計(jì)算結(jié)果和試驗(yàn)數(shù)據(jù)基本吻合。
[關(guān)鍵詞] GFRP片材 混凝土梁柱節(jié)點(diǎn) 抗震性能 抗剪承載力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
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