Capsule type anti-corrosion device with pile shoe and anti-corrosion pile using same and construction method

Abstract

The invention relates to a capsule type anti-corrosion device with a pile shoe and an anti-corrosion and construction method using the device, the capsule type anti-corrosion device comprises a cylindrical coating capsule body made of anti-corrosion material, the inner surface and the outer surface of the coating capsule body are uneven surfaces, a supporting bottom is arranged at the lower part in the coating capsule body, the periphery of the supporting bottom is connected with the side wall of the coating capsule body, the hard anti-corrosion pile shoe is arranged in the coating capsule body, which is positioned at the lower end of the supporting bottom, at least one grouting pipe is arranged near to the outer side of the coating capsule body along the axial line direction the coating capsule body, the bottom end of each grouting pipe extends to the place which is near to the bottom end of the coating capsule body, and a low-pressure grouting hole and a plurality of high-pressure grouting holes are respectively arranged at the lower part of each grouting pipe, which is near to the supporting bottom. The invention aims at providing the capsule type anti-corrosion device with the pile shoe, which has reliable long-term anti-corrosion performance in a pile foundation and a composite foundation in a highly corrosive brine formation, and can reduce the expensive maintenance cost of the foundations of buildings and structures in the corrosive formation, and the anti-corrosion and construction method using the device.

Description

technical field [0001] The invention relates to an anticorrosion and erosion-resistant anticorrosion device with spud cans for the pile foundation and composite foundation of various traffic engineering, industrial and civil construction projects, and anticorrosion piles made by the device and corresponding construction methods. Background technique [0002] At present, whether it is the offshore engineering construction carried out in the site with water conservancy connection with seawater, or the large-scale infrastructure project carried out in the inland salt lake area, they all face the problem of corrosion, erosion and denudation of general building materials by the brine formation, so that they are forced to Reduce the design life of the building and cause high post-project maintenance costs. Some surveys and related tests on buildings and structures in corrosive sites have shown that the brine or salt lake environment, and the saline soil layer around the salt lake...

AI Technical Summary

Problems solved by technology

At present, the passive protection measures such as linoleum insulation, glass fiber reinforced plastic protection and granite foundation adopted in some power and tunnel engineering projects in saline soil areas are not only expensive, but also have insignificant anti-corrosion effects, and the normal service life is usually less than 20 years

[0004] 1. Ordinary reinforced concrete pile foundations are severely corroded by chemical corrosion, physical erosion and denudation of the brine formation. Although the bearing capacity is relatively high, the normal service life is very short. Generally, it needs to be underpinned and overhauled once every 10 years or so, and the maintenance cost is very high. high;

[0005] 2. The vertical foundation piles used in the composite foundation treatment method are generally gravel piles. During the construction process, the reinforcement effect on the saline soil around the pile is not ideal, and the overall composite foundation of the gravel piles in the saline soil site Due to the limitation of the property, the long-term deformation of the foundation after loading is very large and it is not easy to be stable, and the pile body of the foundation pile is prone to bulge damage, and its bearing and deformation performance cannot meet the requirements;

[0006] 3. The fiber-reinforced composite coating anti-corrosion technology applied in bridge or port engineering has good engineering durability, but it is mainly suitable for prefabricated pile types, and the cost is high. It is suitable for general industrial and civil use in corrosive sites For building pile foundations, it is not applicable

[0007] 4. Although the method of improving the material properties of pile body concrete and stress reinforcement can meet the requirements of pile foundation anticorrosion, the manufacturing and installation process of pile body is complicated, and the cost of corresponding new anticorrosion materials is much higher than that of conventional concrete. Therefore, this method It cannot match the current pile foundation construction capacity and budget, and mature construction methods need to be further developed

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