Similar to concrete structure, steel structures will inevitably suffer various damages and defects under the long-term action of external environment and load.The long-term accumulation of steel structure damage will lead to deterioration of structural mechanical properties and even lead to structural failure. In order to ensure structural safety and save resources, the steel structure must be strengthened.

Traditional reinforcement method for steel structure

For steel structure reinforcement, the most traditional way is to weld and reinforce. Welding reinforcement means welding metal cover or section steel at the damaged part of the structure to reinforce and reinforce the steel structure. The welding and reinforcing technology has long application time and high technology maturity, but it has the risk of poor material performance and high operator's influence after welding.

In addition, steel structure reinforcement can also be reinforced by means of riveting and screw connection by opening holes on the original steel structure. This way weakens the cross section of the opening, produces new stress concentration, and is influenced by the material too much, and the reinforcement effect is not easy to guarantee.

Externally bonded CFRP for steel structure

The reinforcement of CFRP does not increase the weight and size of the original structure, and the most important thing is that the reinforcement of carbon fiber cloth does not need opening and welding. It will not cause damage to the steel structure and ensure the strength and integrity of the original structure.