Structure for reinforcing corroded concrete through prestress fiber reinforced composite sheet and reinforcing method

Abstract

The invention discloses a structure for reinforcing corroded concrete through a prestress fiber reinforced composite sheet and a reinforcing method. The structure comprises a concrete member (3) to be reinforced, the prestress fiber reinforced composite sheet (1), stretching end anchorage device anchor bolts (5), a stretching end anchorage device (7), fixed end anchorage device anchor bolts (6), a fixed end anchorage device (8), non-prestress fiber reinforced composite sheets (9) and an external intermittent constant-current power source (11). The stretching end anchorage device (7) and the fixed end anchorage device (8) clamp the two ends of the prestress fiber reinforced composite sheet (1) correspondingly and fix the prestress fiber reinforced composite sheet (1) to the upper surface of the concrete member (3) to be reinforced. An inner reinforcement cage (4) is arranged in the concrete member (3) to be reinforced. According to the structure and the reinforcing method, the corrosion problem of steel bars and prestress anchorage devices in a concrete structure in the corrosive environment is solved, an auxiliary anode is resistant to corrosion and easy to replace, a reinforcing effect is achieved on the concrete structure, and the repairing cost is remarkably reduced.

Description

technical field [0001] The invention relates to the technical field of reinforcing concrete components, in particular to a prestressed fiber reinforced composite sheet reinforcing corroded concrete structure and a reinforcing method. Background technique [0002] The bridge is the main part of the road and the key hub to ensure the smooth traffic. For the early domestic buildings, due to the influence of corrosion and other factors, there are great potential safety hazards in daily traffic. It will cost a lot of money to demolish and rebuild these old bridges. A large amount of human and material resources have caused a serious burden on the country's economy. Therefore, the reinforcement of corroded concrete structures is the main task in the future. Compared with the traditional reinforcement technology, the fiber material prestressing reinforcement technology combines the high performance of fiber composite materials and the advantages of prestressing technology, which i...

AI Technical Summary

Problems solved by technology

However, the prestressed direct reinforcement method commonly used in actual engineering cannot slow down the corrosion rate of the main reinforcement in the structure to be reinforced, and the anchorage used for reinforcement also lacks a mature and economical anti-corrosion solution, which has a great impact on the performance and service life of the structure. Large impact, to a certain extent, limits the application of prestressed fiber reinforcement technology in engineering

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