碳纖維布加固鋼筋混凝土柱抗震性能的試驗研究
吳 剛 呂志濤 蔣劍彪
- 摘 要
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吳 剛 呂志濤 （東南大學(xué)土木工程學(xué)院 南京 210096）蔣劍彪 （北京特希達(dá)科技有限公司 110037）
[提要] 通過11根鋼筋混凝土柱（其中6根用碳纖維布加固）在低周反復(fù)荷載作用下的試驗研究，比較分析了用碳纖維布( CFS)加固前后混凝土柱的破壞形態(tài)、極限承載力、滯回曲線和延性系數(shù)等。結(jié)果表明，CFS 加固鋼筋混凝土柱可以提高柱受剪承載力和延性，使其抗震性能得到顯著改善；CFS 加固效果與柱的軸壓比和配箍率、CFS 粘貼方式和層數(shù)等因素有關(guān)。
[關(guān)鍵詞] 碳纖維布( CFS) 混凝土柱 加固 抗震性能 受剪承載力 延性
Based on the experiment of eleven reinforced concrete columns including six columns strengthened with CFS subjected to lateral cyclic loading, the failure mode, ultimate capacity, hysteretic behavior, ductility factor etc. are compared and analyzed. Experiment results reveal that CFS could significantly increase the shear capacity and ductility capacity of concrete columns, the experiment results also indicate that the effectiveness is related to many factors, such as the axial compression ratio, stirrup ratio of columns, wrap type, layer of CFS, and so on.
Keywords: carbon fiber sheet; reinforced concrete; column; strengthening; seismic behavior; shear capacity; ductility
