Multi-anti-corrosion protection construction method of sea steel cylinder revetment structure

Abstract

The invention discloses a multi-anti-corrosion protection construction method of a sea steel cylinder revetment structure. The multi-anti-corrosion protection construction method comprises the steps of during the processing process, coating the outer walls and the inner walls of steel cylinders and steel sub grids with anticorrosive paint; connecting the steel cylinders with the steel sub grids into an integral body on the sea; filling the steel cylinders and the steel sub grids with medium-coarse sand till the medium-coarse sand is away from the upper edges of the steel cylinders and the steel sub grids by a certain distance; pouring top sealing concrete on the medium-coarse sand; pouring sulfur mortar at the outer ring of the concrete; pouring concrete on the paint in the positions, above the designed low water level and below the top elevation, of the outer walls of the steel cylinders and the steel sub grids on the sea side; welding sacrificial anode blocks on the outer walls of the steel cylinders and the steel sub grids on the sea side; mounting reference electrodes, and welding cathode welding spots and zero welding spots at the upper parts of the outer walls of the steel cylinders and the steel sub grids on the land side; and connecting lead wires of the reference electrodes, the zero welding spots and the cathode welding spots with pre-packaged anode bodies arranged in an anode well. Through adoption of the method, a long-lasting preservative effect can be effectively achieved on the sea steel structure.

Description

technical field [0001] The invention relates to the field of offshore artificial island construction, in particular to a method for multiple anti-corrosion protection of steel cylinder revetment structures in the sea. Background technique [0002] It is an emerging technology in the construction of offshore artificial islands to use steel cylinders as the revetment structure, and then perform internal reclamation to build islands after the revetment is formed. The construction method has the characteristics of fast construction, factory manufacturing, and small impact on the environment. In the current known field, the steel cylinder revetment structures adopted are all temporary structures, and the steel cylinder revetment no longer plays the role of enclosure after the island is formed, so there is no excessive requirement on the service life of the structure. However, if the steel cylinder revetment structure is used as a permanent structure, the service life is required...

AI Technical Summary

Problems solved by technology

However, a single protection measure cannot guarantee the anti-corrosion requirements of the steel structure in the sea, especially in different positions of the same component (such as the mud area, splash area, atmospheric area, backfill area, etc.), which poses a serious threat to the permanent steel cylinder revetment structure. Big security risk

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