1.CFRP strengthening system

Externally wrapping carbon fiber cloth to strengthen the reinforced concrete column.Carbon fiber has a strong binding effect on concrete,can be wrapped in a three-way pressure state to concrete.With the increase of axial force of concrete, the carbon fiber cloth has a ring elongation,so as to achieve the purpose of lateral confinement of concrete.The core concrete is subjected to bi-directional restraining effect of the stirrup and the carbon fiber wrap, and it still has good deformation performance when the concrete reaches the peak stress.

2.Increasing column cross-section reinforcement 

Increasing column cross-section reinforcement method is based on the force of the column.Wrapped concrete on one side, both sides or around the outsourcing. A method to increase the column cross-sectional area and reinforcement steel, so as to improve the carrying capacity of components, increase the strength and stiffness of the column to meet the requirements of normal use.

3.Bonding steel plate to concrete 

Bonded steel reinforcement method is externlly bonded angle steel and steel plate.Can greatly improve the bearing capacity of the column, but also improve the resistance of the column resistance. The advantage of this reinforcement method is that lack of the cross-sectional area of the column can also increase in the bearing capacity of the column.