FRP-concrete Bond Slip Relationship Investigation Based On K&C Model

From the early 1990s, the fiber reinforced polymer (FRP) became widely used in structural engineering due to with its special advantages of light weight, high strength. In recent years, FRP has been started to used to resist blast and impact load. Compared with the comprehesive research on static FRP-concrete bond behaviour, little attention has been paid to the FRP-concrete bond behaviour under rapid loading conditions. This piece of work was focusing on this issue, and the research has been done is listed below:First of all, in this paper, the types of FRP, forms as well as a brief introduction to the construction technology of reinforcement have been carefully reviewed;Secondly, the concrete one-way tensile modal finite element trial has been done using the K&C local damage model and ANSYS/1s-dyna finite element software. Based on the previous work, a three point notched beam bending tests has been modelled;In addition, the existing bond-slip relationship has been reviewed, and the static bond-slip model is established based on the K&C local damage model and ANSYS/ls-dyna finite element software. The static bond behaviour was discussed;In the end, based on the quasi static finite element model, dynamic increasing factor associated with strain rate was introcuded. The bond behaviour under different loading rate is discussed.