预应力CFRP布加固混凝土梁不卸载时的受弯性能试验研究

The experimental study of character in bending of concrete beams strengthened with prestressed CFRP sheets when load is not removed

通过5根不卸载的混凝土梁进行预应力CFRP布加固后的荷载试验,主要研究了不同的初始弯矩对构件受弯性能的影响和作用。试验研究表明,初始弯矩的存在使构件的受弯性能明显降低,并且随着初始应力水平的增加,降低作用更加明显。

Through load experiments of five concrete beams strengthened with prestress CFRP sheets when load is not removed.This paper researches mainly that different initialmoment has the influernce and action on the character in bending of member.The experiments show that the existing of initialmoment weakens clearly the character in bending,and with the increasing of initial stress,the effection is more notable.