The forms of shear reinforcement of concrete beams and columns by pasting carbon fiber sheets include closed pasting, U-shaped pasting or side pasting, and closed pasting is preferred.

The shear reinforcement of concrete beams and columns by pasting carbon fiber sheets shall comply with the following regulations:

1. The cross-sectional height of concrete beams and columns should not exceed 500mm.

2. The increase in shear bearing capacity should not exceed 40%.

3. The shear design value of the reinforced component should comply with the standard

The structural measures for shear reinforcement of concrete beams and columns by pasting carbon fiber sheets shall comply with the following regulations:

1. The shear reinforcement of a beam can be achieved through U-shaped bonding and side bonding reinforcement. The fiber direction of carbon fiber sheet should be perpendicular to the axis of the component. When the fiber direction is not perpendicular to the axis, the fiber direction should be perpendicular to the 45 ° oblique crack, and the carbon fiber sheet should be pasted in an axial continuous form. When using carbon fiber board for shear reinforcement, it is advisable to use double L-shaped plates to form a U-shaped.

2. The sheet spacing between carbon fiber sheet arranged in two sheets should not exceed 70% of the maximum spacing between stirrups specified in the current standard.

3. For the U-shaped pasting form, it is advisable to paste longitudinal carbon fiber sheet pressure strips or use mechanical anchoring measures at the upper end; For the side pasting form, it is advisable to paste longitudinal carbon fiber sheet pressure strips or adopt mechanical anchoring measures at the upper and lower ends respectively.

4. The shear reinforcement of the column should adopt a closed adhesive form, and the fiber direction of the carbon fiber sheet should be perpendicular to the column axis.