碳纤维布加固钢筋混凝土梁试验

Experimental study of CFRP reinforced concrete beams

为揭示碳纤维布加固方式对钢筋混凝土梁性能的影响,采用理论分析和试验的方法,对六根不同配筋率产生极限破坏的钢筋混凝土梁进行碳纤维布加固试验,研究不同碳纤维布粘贴层数对梁极限承载力恢复程度的影响及对加固前后钢筋混凝土梁的承载力、刚度、延性等性能指标进行对比分析.结果表明:经过碳纤维布加固后发生极限破坏的钢筋混凝土梁极限载荷、刚度和延性均有不同程度提高.

To reveal the CFRP reinforcement effect on the performance of reinforced concrete beams, this paper adopted the method of theory analysis and experiment, through strengthening experiment of six different reinforcement ratio limit damage reinforced concrete beams by CFRP, studied the different layers of CFRP paste the degree of ultimate carrying capacity of the beam and the performance index of the carrying capacity, the stiffness and the ductility compared with before strengthening of reinforced concrete beams, and analyzed before and after reinforcement. The result of study shows that the ultimate load, the stiffness and the ductility of limit damage reinforced concrete beams by CFRP have different degrees of increase and can be widely used in practical engineering.