The renovation project of the staff dormitory building of the New World Hotel in Beijing, because the owners change the indoor function, makes the existing floor bearing capacity difficult to meet the load requirements of the new function and the existing floor has a larger opening. After testing and appraisal, it was decided that existing floors must be reinforced.

The carbon fiber reinforced polymer and adhesive used in this project. This product has durable and environmentally friendly performance, and is recommended as a brand product for the certification of the Reinforcement Committee of the Ministry of Housing and Urban-Rural Development

Carbon fiber reinforced polyrme reinforcement requirements:

(1) If there are cases where 3 or more floor reinforcements are cut at a time at the opening of the floor slab, carbon fiber reinforced polymer reinforcement is adopted.

(2) The carbon fiber reinforced polymer should be pasted to the beam, column and other supports along the short span of the floor slab, and the pasting of the other floor slab should meet the anchor length requirements. Paste the carbon fiber reinforced polymer in the long-span direction of the floor first, then paste the carbon fiber reinforced polymer in the short-span direction of the floor.

(3) If the edge of the hole is close to the wall, the carbon fiber reinforced polymer is no longer adhered to the floor slab. The carbon fiber reinforced polymer under the floor slab is bent at the corners and extends 600mm, and 200mm wide carbon fiber reinforced polymer is used for bead treatment.

(4) After the construction of the carbon fiber reinforced polymer is completed, the surface of the carbon fiber reinforced polymer needs to be painted with a fireproof coating, and the fire resistance limit should be greater than 1.5h.

Carbon fiber structural reinforcement technology is used to strengthen and reinforce buildings. It uses high-performance adhesives and pastes carbon fiber reinforced polymer on the surface of building structural members. The two will work together to promote the improvement of the bearing capacity of structural members. The use of carbon fiber reinforced polymer reinforcement has the advantages of high strength, good effect, light weight, easy to cut, good economy and short construction period. At the same time, the durability and corrosion resistance of the structure are greatly improved, making it suitable for the reinforcement and repair of various concrete structural members and general structures with different stress properties.

Conclusion

An important indicator of people’s lives is the improvement of the living environment. For a long period of time, the country could not provide a large amount of new construction land, and the old buildings faced the situation of upgrading. Carbon fiber reinforced polymer reinforcement technology is a very good way to solve this problem.