论文部分内容阅读
为研究CFRP加固有损伤梁的抗剪性能,基于钢筋混凝土梁抗剪理论,运用有限元分析软件建立CFRP加固有损伤梁的三维有限元模型;采用数值模拟计算方法,分析不同加固量和加固方式对二次受力下CFRP加固钢筋混凝土梁的抗剪极限承载力的贡献和加固效果的影响.研究结果表明:随着碳纤维布加固量的增多,梁的抗剪极限承载力也随之增大,且环包加固效果好于“U”形粘贴,碳纤维布在钢筋混凝土梁抗剪加固中对提高梁的极限承载力贡献较大.
In order to study the shear resistance of beam with CFRP reinforcement, the three-dimensional finite element model of CFRP-reinforced beam with damage was established by finite element analysis software based on the shear theory of RC beams. The numerical simulation method was used to analyze the different reinforcement and reinforcement methods On the ultimate load-carrying capacity of reinforced concrete beams strengthened by CFRP under secondary loading and the effect of reinforcement.The results show that with the increase of the amount of CFRP reinforcement, the ultimate bearing capacity of beams increases, And the reinforcement effect of the ring package is better than that of the “U” shape. The carbon fiber cloth contributes greatly to the ultimate bearing capacity of the beam in the shear reinforcement of the reinforced concrete beam.