Underwater pile foundation reinforcing device and construction method for reinforcing underwater pile foundations

Abstract

The invention relates to an underwater pile foundation reinforcing device. The underwater pile foundation reinforcing device comprises an FRP pipe shell, positioning blocks and a sealing strip, wherein the positioning blocks are glued on the inner side of the FRP pipe shell through an adhesive; the sealing strip is mounted in a gap between the bottom of the FRP pipe shell and a structure to be reinforced during construction; the FRP pipe shell consists of a plurality of pipe shells which are assembled into a whole through a male connector and a female connector which are arranged at two ends of each pipe shell, the thickness of the FRP pipe shell is 1-5mm, and the FRP pipe shell is made through hot moulding and shaping reinforcement fiber cloth and epoxy resin; the positioning blocks are made through injection moulding of rubber, polyurethane or epoxy resin materials. When the device is used for reinforcing the underwater pile foundations, the operations of building a cofferdam and draining water are not needed, only the pipe shells of the FRP pipe shell need to be buckled and assembled at a region where a concrete pile needs to be reinforced, the FRP pipe shell is fixed on the pile through positive pressure provided by the extrusion deformation of the positioning blocks, then the sealing strip is mounted in the gap between the lower part of the FRP pipe shell and the concrete pile, mortar is grouted, and after construction, the FRP pipe shell does not need to be disassembled.

Description

technical field [0001] The invention relates to an underwater pile foundation reinforcement device and a construction method for underwater pile foundation reinforcement. Background technique [0002] In the prior art, steel cofferdams need to be installed for the reinforcement of underwater pile foundations, and the water in the cofferdams should be drained to obtain a dry working space. Then, templates should be installed in the cofferdams to be reinforced, and concrete should be poured to complete the reinforcement. Work. The process requires a large amount of engineering and takes a long time. For bridge projects, traffic needs to be closed, which has a great impact on traffic. [0003] The patent application technology with the publication number CN103205988A discloses a device suitable for repairing and reinforcing the underwater part of pile foundations and a construction method using the device. This technology still has the following deficiencies: 1. It is necessar...

AI Technical Summary

Problems solved by technology

The process requires a large amount of engineering and takes a long time. For bridge projects, traffic needs to be closed, which has a great impact on traffic.

[0003] The patent application technology with the publication number CN103205988A discloses a device suitable for repairing and reinforcing the underwater part of pile foundations and a construction method using the device. This technology still has the following deficiencies: 1. It is necessary to install a watertight cage first, and then drain it The water in the cage, that is, the construction environment still needs to be dry, and the sealing requirements for the device are high, and the workload is heavy; 2. The watertight cage of the device is made of PVC or steel. After the concrete is cured, the cage is removed, and the reinforced The concrete still bears water erosion and various erosions, and needs to be reinforced again after a period of time

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