Prestressed carbon fiber board: a new material that can be applied to beam bottom reinforcement technology
Prestressed carbon fiber board can be used in box beam reinforcement engineering to enhance the bearing capacity of box girder structure. Through recent engineering practice, the prestressed carbon fiber board reinforcement technology is stable and reliable, and can be popularized and applied in engineering reinforcement.
The process principle in the process of prestressing carbon fiber board reinforcement is as follows.
(1) By applying pre-stress to the carbon fiber sheet, the high tensile strength of the carbon fiber material can be maximized, and the principle is similar to that of the prestressed beam structure. Since the pre-stress is applied in advance, the material has a certain initial strain. After the secondary force, the ability to coordinate the deformation of the carbon fiber material and the concrete material can be used to improve the quality and effects of the reinforcement.
(2) By applying prestressing force, the decompression bending moment can be generated. The decompression bending moment can offset a large part of the load in the early stage, improve the ability of the structure to carry in the later stage, significantly improve the crack resistance of the structure, limit the occurrence of new cracks, and improve the components. The overall stiffness and strength reduce the deflection deformation of the components.
(3) Carbon fiber sheet deformation comes from two aspects, on the one hand from the deformation caused by the application of prestress, on the one hand from the deformation under the external load, sharing the shear deformation of the adhesive of the two parts, which are respectively distributed in the two ends of the members and the mid-span position. They can evenly distribute the shear deformation of the adhesive to prevent the occurrence of adhesive brittle fracture.
(4) For the proposed reinforcement structure, according to the mechanical performance and installation space of the engineering structure, the reinforcement position must be reasonably arranged, and the carbon fiber board coated with special epoxy glue should be used for pre-tensioning, repairing the deformations the members and closure of the cracks. Then attach the carbon fiber sheet to the parts of the structural force plate to maximize the load carrying capacity of the structure.
The use of prestressed carbon fiber sheet reinforcement technology has the characteristics and advantages of simple construction and low technical threshold. It only requires the construction personnel to have certain prestressing application technology, and has extremely high engineering application value. The prestressed carbon fiber board produced by Nanjing Mankate Technology Co., Ltd. is a famous Chinese product and is underwritten by Ping An Insurance. It has been widely used in Chongqing Yuzhong South Main Road, Guodian Inner Mongolia Jingyang Energy Substation and other projects. It is your trustworthy choice. If you are interested in this product, please call our one-stop service hotline: 400-894-5118.
Link to this article: https://www.njmkt.net/Article/yyltxwbkyy.html
(Editor: Nanjing Mankate, if you need to reprint, please indicate the source)
