碳纤维布加固柱抗震性能试验研究

为了研究加固混凝土柱的有效方法,实验设计了4根RC柱在低周水平反复荷载作用下的抗震性能研究,研究的主要参数为轴压比和预裂裂缝宽度,试验结果表明：当轴压比相同时,受损较严重的柱经加固,可以与受损较轻的柱具有基本相同的承载力;当预裂裂缝宽度相同时,轴压比越大,碳纤维布加固混凝土柱极限承载力提高幅度更显著,小轴压比加固柱位移延性系数提高更加明显。

Experimental research on seismic behaviors of columns strengthened with CFRP

In order to study an effective strengthening method for damaged reinforced concrete columns, seismic experimental studies are conducted by using a constant gravity load and alternately repeated lateral forces with four short RC column specimen. The parameters of test specimens included the axial compression ratio and the crack width. Test results indicate that in the same axial compression ratig, the damaged more severe column after strengthened could get the same bearing capacity of the damaged lighter column. In the same crack width, the ultimate bearing capacity of strengthened damaged column with higher axial compression ratio increase was obviously, the deformation ductility coefficient of strengthened column with lesser axial compression ratio increase was obviously.