Compared with the traditional steel structure reinforcement method, what are the obvious advantages of FRP(fiber-reinforced polymer) composite for reinforced steel structure technology?

1. FRP composite material have high strength and specific stiffness, to achieve the same reinforcement effec. The size of the composite material is obviously less than the size of the steel plate, after reinforcement, it does not increase the weight of the original structure and the size of the original component.

2. because of the design of the composite, the performance of FRP can be designed according to the stress and strain field of the damaged structure, so as to meet the requirements of the steel structure and improve the strengthening effect of the structure to the maximum limit.

3. The flexible fiber reinforced composite fabric is highly adaptable to the reinforcement of complex curved steel structures, such as pressure vessels, pipes, safety shells and so on.

4. The composite has good fatigue resistance and corrosion resistance. The bonding reinforcement does not reduce the cross section area of the component, and the load transfer from the damaged component to the fiber reinforced composite is more uniform and effective, and the stress concentration is lower.

5. Does not need to drill the original structure, and will not form a new stress concentration source, thus eliminating the possibility of creating a new hole edge crack, improving the stress concentration and loading condition, improving the fatigue resistance and the damage limit of the structure, and avoiding the damage to the hydraulic pipe which may be caused by the drilling.

6. Flexible composite materials for arbitrary closed structure and complex shape of the reinforced structure surface, to ensure nearly 100% effective adhesion rate. It can be bonded and strengthened from one side, and the sealing property is good. It can reduce the hidden danger of leakage and even corrosion. This is particularly important to the petrochemical pressure vessel and the urban water supply and gas supply pipeline.

7. In the process of construction, there is no fire in the construction process. It is reliable and has little influence on the production of cattle. It is suitable for special environment, such as gas tank, oil storage tank, underground equipment (with explosion danger), cable dense or chemical workshop, refinery and so on.