A new repair method for submerged bridge pier cracks

Abstract

The invention discloses a new repair method for bridge pier cracks submerged in water. The steps of the method are as follows: 1. Treatment of bridge pier cracks: perform preliminary cleaning on the bridge pier cracks, use rubber templates to cover the bridge pier cracks, and preliminarily repair the bridge pier cracks when covering. Reserve the upper channel and the lower channel; and seal the rubber formwork and the surface of the pier to be repaired; 2. Drainage and exhaust treatment: Drainage treatment is carried out inside the pier, and the liquid inside the pier is discharged through the lower channel. In this way, the accumulated water inside the crack of the bridge pier is drained and filled with gas; then exhaust gas is carried out, and the gas inside the bridge pier is pumped out through the upper side channel, so that a negative pressure environment is formed inside the crack of the bridge pier; 3. Filling: connect the lower pipe to the filling machine , due to the pressure difference, the filling will quickly fill the cracks in the pier from bottom to top. When the filling overflows from the outlet of the upper pipe, the cracks in the pier will be completely filled. This method can realize the repair of crack wounds of piers of any shape under water.

Description

technical field [0001] The invention relates to a novel repair method for the cracks of piers submerged in water, and is mainly used for repairing underwater cracks of cross-sea bridges. Background technique [0002] With the development of technology, materials, and structures, the sea-crossing bridge, which was considered impossible in the past, has become a reality. However, because the piers of the cross-sea bridge have been submerged in seawater for a long time and have been subjected to various loads of waves for a long time, the concrete structure around the piers has been damaged and cracks have appeared, which not only affects the strength of the piers, but also poses certain safety hazards. In addition, the damage of the concrete structure exposes the steel bars wrapped inside to the seawater, and long-term seawater erosion is likely to cause various corrosions of the steel bars. Therefore, it is very necessary to repair the damage of the bridge pier in time when ...

AI Technical Summary

Problems solved by technology

However, because the piers of the cross-sea bridge have been submerged in seawater for a long time and have been subjected to various loads of waves for a long time, the concrete structure around the pier has been damaged and cracks have appeared, which not only affects the strength of the pier, but also poses certain safety hazards

In addition, the damage of the concrete structure exposed the steel bars inside the seawater, and long-term seawater erosion is likely to cause various corrosions of the steel bars

Therefore, it is very necessary to repair the damage of the bridge pier in time when the steel bar is not damaged. At present, there are many repair schemes for the bridge pier structure, but these methods are all repairing the bridge pier structure on land (in the air). About the bridge pier The traditional underwater repair scheme often has many disadvantages. The typical problem is that in the process of underwater repair, it is difficult to isolate the underwater environment from the internal environment of the pier cracks, and no simple and effective method has been found in actual construction. Complete the realization of the sealed environment, so there is often a large amount of liquid and gas in the actual repair process, which will cause a large number of water bubbles in the repaired structure, and the existence of these bubbles greatly reduces the strength of the structure

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