Beam bridge reinforcing structure and reinforcing method

Abstract

The invention provides a beam bridge reinforcing structure and reinforcing method. The beam bridge reinforcing structure comprises an arched steel pipe component, I-beams and steel inclined struts. The two ends of the arched steel pipe component are fixed to two adjacent piers of a bridge body. A middle section of the arched steel pipe component is fixedly connected with the steel inclined struts. The steel inclined struts are fixedly connected with the I-beams. The bottom of a bridge deck of a beam bridge is continuously supported through upper flanges of the I-beams. By the adoption of the reinforcing structure, stress of an original beam bridge is optimized, the bending moment of the beam bridge is remarkably reduced, the situation that the beam bridge further cracks under the overloading effect is effectively prevented, part of cracks can be partially closed, stressed reinforcing steel bars in the beam bridge are protected against exposure and corrosion, the load burdens and operation risks of the beam bridge are remarkably reduced, the structure anti-bending and anti-shearing bearing capacity and the durability performance of the beam bridge are improved, and the service life of the bridge is effectively prolonged.

Description

Technical field [0001] The invention belongs to the technical field of bridge engineering, and specifically relates to a beam bridge reinforcement structure and a reinforcement method. Background technique [0002] The multi-span simply supported beam bridges, continuous beam bridges, continuous rigid frame bridges and T-shaped rigid frame bridges built in China in the early days have been used for a long time. With the development of economy, the weight of vehicles and traffic flow continue to increase. The design load level of the bridge is significantly lower than the actual vehicle load later. The safety reserve of the bridge is insufficient. Some beam bridges have different degrees of operational damage and disease, and different degrees of bridge cracks, steel corrosion, and excessive bridge deformation. The load-bearing capacity of the bridge has declined to varying degrees, the durability has dropped sharply, and there are certain hidden safety hazards. There have been so...

AI Technical Summary

Problems solved by technology

The disadvantage of this cable-stayed reinforcement method and technology is that it is necessary to build additional tower columns together with pile foundations, and to build additional cover beams and widened sections of box girders, which requires a large amount of reinforcement work and a long period of time It is long, and involves the anchoring and tensioning of the cables, and the construction process is complicated, which is not conducive to the widespread application of the project

[0004] Therefore, for existing girder bridges, conventional reinforcement methods cannot solve the problem of excessive stress, and it is difficult to ensure the requirements of its bearing capacity and service life. It is necessary to study reinforcement methods that are cost-effective and effective

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