碳纤维薄板与混凝土界面的粘结性能研究

A study on bonded property in interface of concrete members strengthened with continuous carbon fiber sheet

采用试验与有限元分析相结合的方法，研究碳纤维薄板与混凝土界面的粘结力学性能及剥离破坏机理，结果表明，界面粘结强度比混凝土抗剪强度高，随着载荷的不断增加，界面剪应力的分布和峰值位置逐渐变化，最终导致混凝土在界面发生剥离破坏。

The bonded property and debonding failure mechanism in the interface of concrete members strengthened with continuous carbon fiber sheet is studied by using experimental method and finite element method. The results show as following: bonding strength of interface is higher than shearing strength of concrete, the shearing stress distribution and maximum value position of the shearing stress in the interface change gradually as the load increases, the debonding failure model finally occurs in the interface