Research On Performance And Bonding Methods Of The Interface In Strengthening Concrete Structures

The concrete structure as a result of the concrete carbonization, the corrodes, the sectional damage and so on which affect the safe usage of the structure seriously, must be carried on reinforcement processing. Reinforcing and modifying the exiting building involves the massive reinforcement and strengthen of the structure. The bonding method and mechanical performance of the interface between old and new concrete directly affects the common work effect of the structure, therefore, researching on the bonding method and work performance of the interface to establish the perfect computational method and theory and to improve the bonding craft presently is one primary subject of the domestic and foreign structural engineering field.Through analyzing the work characteristic and the work mechanism of the interface in this research paper, bonded rebar technique is applied to the bonding treatment of the interface, the reformative method of enlarging sectional areas is proposed, and the work mechanism of the anchor bar in the interface is analyzed. The work mechanism of the reformative method of enlarging sectional areas and the interface mechanical performance have be more systematical analyzed and studied with the finite element numerical simulation method, the structural testing method, and combing project practice. Based on that, the suggestion formula of shear and tension bearing capacity for the old and new concrete is put forward. According to the research results, the design principle and the construction method of the reformative method is brought forward, which has obtained the good effect in project.The further thoroughly studies on the bonding method and the mechanical performance...