Carbon fiber reinforcement technology 

Carbon fiber reinforcement technology refers to the use of epoxy resin to immerse carbon fiber materials with high tensile and compressive strength into composite materials. Then, epoxy resin binder is used to bond composite reinforcement materials to the buildings that need to be strengthened along the direction of tension, so that the building and the bonding materials can bear pressure together, so as to improve the shear and crack resistance of the structure, and enhance the stiffness, ductility and crack resistance of the building. At present, this reinforcement technology has been widely used in the process of building structure reinforcement of land civil engineering. However, in the process of strengthening concrete wharf buildings, carbon fiber reinforcement technology can only be used in places where the stress is not important.

Damage of Wharf

There are 205 cracks in the whole longitudinal beam.

The reinforcement of the longitudinal beam section can not meet the requirements of the national standard of reinforced concrete, and the longitudinal beam of the wharf section can not meet the requirements in terms of horizontal bending capacity. That is to say, the 1750mm section on the outer side and 470mm section on the inner side of the longitudinal beam can not meet the reinforcement requirements of Fengxiong. It needs to be strengthened with carbon fiber reinforcement method.

Epilogue

In the design of CFRP reinforcement scheme for Wharf theme structure, the adaptability of seawater environment should be taken into account. At the same time, the durability of coatings, resins, repairing glues, primers, reinforcement materials and interface agents used in the reinforcement process should be considered. At the time of design, this period can be initially set to 20 years. In order to prevent steel members from being corroded and unnecessary damage to steel piles on accelerated wharf, attention should be paid to protecting steel box, steel pile cap and steel box bolts which are just installed on the breakwater when using carbon fiber to reinforce them. At the same time, when pasting carbon fiber cloth, we should also avoid obstacles. The construction, design scheme and inspection work should be closely linked, and a strict reinforcement operation management scheme is an important condition to ensure the stability of carbon fiber reinforced wharf.