CFRP板加固PPC梁抗剪性能试验研究

Experimental study on shear properties of partial prestressed concrete (PPC) beams strengthened with externally bonded CFRP strips

通过4片部分预应力混凝土(PPC)梁试件采用CFRP板抗剪加固的试验,研究不同预应力水平对CFRP板加固PPC梁抗剪性能的影响。结果表明:采用CFRP板对PPC梁进行抗剪加固,能有效抑制斜裂缝的发展,提高加固梁的斜截面抗剪承载力,并在试验研究的基础上进行了非线性有限元分析,与试验结果吻合良好。

An experimental with carbon fibre reinforced study on four partial plastic （CFRP） strips prestressed concrete （ PPC ） beams strengthened were conducted under static loading. The influ- ences of prestressing on the shear properties of the strengthened beams were investigated. The results indicate that the inclined cracking development can be effectively restrained with CFRP strips using the proposed strengthening method. The shear load-carrying capacity of the strengthened PPC beams can be effectively improved. Nonlinear finite element analysis results conform those of the testing.