Bridge deck reinforcing structure and method

Abstract

The invention provides a bridge deck reinforcing method. The method comprises the steps of drilling, wherein reinforcing holes are drilled in the top surface and / or bottom surface of a bridge deck; glue filling, wherein the reinforcing holes are filled with steel bar embedding glue; steel bar distribution, wherein FRP bars are placed in the reinforcing holes. Compared with a surface bonding method in the prior art, the reinforcing method has the advantages that the FRP bars are protected and limited by a concrete structure of the bridge deck after being placed in the reinforcing holes without being affected by the external environment basically, so that FRP bar and concrete bonding property is improved and bonding failure caused by edge concrete cracking is effectively avoided. Compared with a surface-surface mounting method in the prior art, the reinforcing method has the advantage that reinforcement is conducted by drilling concrete and then placing the FRP bars in the drilled reinforcing holes instead of being conducted on the surface layer of concrete, so that damage to a concrete protection layer is avoided.

Description

technical field [0001] The invention relates to bridge reinforcement technology, in particular to a bridge deck reinforcement structure and a bridge deck reinforcement method. Background technique [0002] With the rapid development of my country's economy and the rapid increase of traffic volume, the bridge deck structure of a large number of reinforced concrete bridges has been seriously aged due to the long service time and the continuous increase of load level, which leads to the continuous decline of bearing capacity. Serious safety hazard. Therefore, it is necessary to strengthen the bridge deck structure. However, at present, the strengthening operation of the bridge deck structure is mainly based on bending reinforcement. In addition, the initial design of some bridge deck structures does not predict the shear force enough, so it is necessary to focus on the shear reinforcement of this part of the bridge deck structure. [0003] In the prior art, the reinforcement o...

AI Technical Summary

Problems solved by technology

Among them, the surface pasting method is to use adhesives to paste FRP materials (plates, sheets, cloth, etc.) Destruction; the surface embedding method is to embed FRP plates or FRP bars after the surface of the component is grooved and then poured into the adhesive. The lower tensile strength has obvious deficiencies in the protective effect of FRP tendons

[0004] The above reinforcement methods can only strengthen the surface of the structure. Since different parts of the bridge deck structure are subjected to different shear forces in different directions, it is difficult to improve the shear bearing capacity of the structure only by strengthening the surface of the structure.

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