A kind of reinforced structure and its construction method to ensure the common stress of new and old concrete structures

Abstract

The invention discloses a reinforcing structure capable of ensuring new and old concrete structures to be stressed together. The reinforcing structure comprises a plurality of connection members, an adhesion agent, newly-added reinforcing steel bars and new concrete, wherein the connection members are longitudinally arranged along the old concrete structure at intervals, the adhesion agent is coated on the surface of the old concrete structure between adjacent I-shaped steel members after the surface of the old concrete structure is roughened, the newly-added reinforcing steel bars are longitudinally arranged along the I-shaped steel members, the new concrete is formed by pouring concrete on the surface of the old concrete structure, and the surface of the new concrete is parallel and level to the surfaces of the joist steel members. The invention also discloses a reinforcing construction method with the above reinforcing structure. According to the reinforcing structure and the reinforcing construction method, the plurality of connection members are arranged on the contact surfaces of the new concrete structure and the old concrete structure, and the anti-slip capability in the horizontal and the vertical directions and the separation resistance in the longitudinal direction of the contact surfaces of the new concrete structure and the old concrete structure can be improved, so that the new concrete structure and the old concrete structure can be stressed together and perfectly connected to achieve coordinate deformation, and the bearing capability and the long-term using performance of the reinforcing structure are guaranteed.

Description

technical field [0001] The invention relates to a reinforcement and maintenance technology of a new type of connecting key which ensures joint stress of new and old concrete structures. Background technique [0002] In structural reinforcement projects, it is often necessary to pour new concrete materials on the surface of damaged old concrete structures to increase the section height and moment of moment of inertia, improve the structural bearing capacity and prolong the service life of the structure; [0003] At present, the longitudinal anti-slip of new and old concrete is often carried out by chiseling the joint surface and brushing the interface agent; it is often difficult to achieve the joint force effect by using the concrete occlusal force to achieve longitudinal coordinated deformation. After a period of time, longitudinal disengagement occurs on the bonding surfaces of many reinforced structures. [0004] At present, in the reinforcement project, in order to ensu...

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Problems solved by technology

[0006] The purpose of this invention is to make up for the deficiencies of the existing concrete repair and reinforcement technology, and solve the difficult problem that the new and old concrete structures are difficult to achieve common stress after reinforcement

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