Ultra-high performance concrete-common concrete mixed reinforcing structure and reinforcing method thereof

Abstract

The invention discloses an ultra-high performance concrete-common concrete mixed reinforcing structure and a reinforcing method thereof. The ultra-high performance concrete-common concrete mixed reinforcing structure comprises an original main arch ring and a newly arranged main arch ring; an anti-shear connecting piece is arranged on the original main arch ring; and the anti-shear connecting piece connects the original main arch ring with the newly arranged main arch ring to form a whole body. The ultra-high performance concrete-common concrete mixed reinforcing structure is completely suitable for reinforcing dangerous old masonry arch bridges; by combining a construction technology and construction equipment for covered arch reinforcing method molding with the technical scheme of the invention, the feasibility and construction efficiency of the ultra-high performance concrete-common concrete mixed reinforcing structure are guaranteed. According to the ultra-high performance concrete-common concrete mixed reinforcing structure, as the original main arch ring and the newly arranged main arch ring form a whole body to mutually bear forces, the application status that deviation exists between a reinforcing design theory and the actual stress state is improved. The ultra-high performance concrete-common concrete mixed reinforcing structure has the advantages that the usage of reinforcing materials is small, the load on the original main arch ring is reduced, the long-period use performance and durability of a bridge are improved, diseases such as concrete cracking, breakage,water seepage and so on at the intersected part of the reinforcing layer and the original main arch ring are avoided, and the life cycle cost of masonry arch bridge reinforcement is lowered.

Description

technical field [0001] The invention relates to the technical field of bridge reinforcement, in particular to an ultra-high performance concrete-ordinary concrete hybrid reinforcement structure and a reinforcement method thereof. Background technique [0002] Most of the existing masonry arch bridges were built earlier, with lower load levels, and most of them have become dangerous old bridges. The existing masonry arch bridge reinforcement methods have certain limitations and defects. For example, the reinforced concrete composite arch ring reinforcement method increases the burden on components, and takes a long time for pouring and maintenance; the outsourcing steel plate reinforcement method consumes a large amount of steel and costs a lot. , poor corrosion resistance and fire resistance; changing the structural system method, the construction components have limitations for bridges with clearance requirements; the method of pasting carbon fiber cloth is poor in fire res...

AI Technical Summary

Problems solved by technology

The existing masonry arch bridge reinforcement methods have certain limitations and defects. For example, the reinforced concrete composite arch ring reinforcement method increases the burden on components, and takes a long time for pouring and maintenance; the outsourcing steel plate reinforcement method consumes a large amount of steel and costs a lot. , poor corrosion resistance and fire resistance; changing the structural system method, the construction components have limitations for bridges with clearance requirements; the method of pasting carbon fiber cloth is poor in fire resistance except for the aging and peeling of the adhesive, and requires a professional construction team Finish

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