A kind of bridge structure reinforcement mould and reinforcement method

Abstract

The invention discloses a bridge structure reinforcing mold and reinforcing method. The bridge structure reinforcing mold comprises a U-shaped mold shell, a top plate, inflatable cushions and an inflator pump; a plurality of inflatable cushions are distributed on a bottom plate in the U-shaped mold shell; each inflatable cushion is connected with the inflator pump via an air tube; the top plate is placed on the inflatable cushions; a plurality of inflatable tube through holes are formed in a bottom plate of the U-shaped mold shell; a group of bolt mounting holes is formed in the periphery of the opening of the U-shaped mold shell; and through high-strength bolts, the U-shaped mold shell is fixed on the bottom surface of a bridge structure to be reinforced. The bridge structure reinforcing method comprises the steps of firstly, fixedly mounting one or more uniformly distributed prestressed fiberboards on the bottom surface of the bridge structure to be reinforced, and secondly, laying and covering reinforcing concrete on the prestressed fiberboards by using the bridge structure reinforcing mold. The bridge structure reinforcing mold and reinforcing method have the advantages that advantages of a prestressed reinforcing technology and a section-enlarging reinforcing technology can be brought into full play by combining the prestressed reinforcing technology and the section-enlarging reinforcing technology; and the rigidity improving effect and bearing force increasing effect of the bridge structure are obvious.

Description

technical field [0001] The invention relates to the technical field of building bridge reinforcement, in particular to a bridge structure reinforcement mold and a reinforcement method. Background technique [0002] With the increase of service time, the bridge structure will generally have problems such as increased deflection, bearing capacity and stiffness decrease, and due to different degrees of engineering quality problems or the impact of natural disasters, reinforcement and other measures need to be taken. Traditional reinforcement methods mainly include: enlarging section method, outsourcing steel reinforcement method, external bonded steel reinforcement method, pasting fiber sheet reinforcement method, prestressed reinforcement method, adding fulcrum reinforcement method, crack repair method and shotcrete reinforcement method, etc. . Traditional reinforcement methods can basically solve common reinforcement problems, but there are still some problems. The reinforc...

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Problems solved by technology

The reinforcement method of enlarging the section can effectively improve the rigidity and bearing capacity of the structure, but it is a passive reinforcement method, and the self-weight of the structure increases greatly; High, poor corrosion resistance, no fire protection, the damage is often bond failure, not only the strength of the steel cannot be fully exerted, but also it is difficult for designers to estimate the bearing capacity; the fiber sheet has light weight, high tensile strength, and corrosion resistance Strong performance and convenient construction, but the improvement of structural rigidity is not obvious, the reinforcement effect of cracked structures is not obvious, and the improvement of bearing capacity is relatively limited; The improvement is relatively small; the addition of fulcrum reinforcement method can reduce the span of the structure and effectively improve the stiffness and bearing capacity of the structure, but it is difficult to change the stress system of the structure, especially for bridge structures, it is difficult to implement the addition of fulcrum reinforcement method The crack repair method can improve the safety performance of the building and the durability of the service life to a certain extent, but it has little significance for the improvement of the structural rigidity and bearing capacity; the shotcrete reinforcement method is difficult to construct and the quality is difficult to guarantee. Limited, the improvement effect on structural rigidity and bearing capacity is not obvious

It can be seen that the current traditional reinforcement methods have inherent defects to varying degrees, and the reinforcement problems of existing bridge structures often involve multiple aspects. A single reinforcement method is difficult to meet the comprehensive performance of bridge structure maintenance, stiffness and bearing capacity improvement. Require

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