Suction anchor capable of penetrating below the seabed and its installation method

Abstract

The invention discloses a suction anchor capable of penetrating below the seabed, comprising an anchor barrel with an opening downward, a drainage hole and a plurality of opening conduits connecting the inside and outside of the anchor barrel are arranged on the top of the anchor barrel, and the upper part of the drainage hole is connected with a submersible pump. Connection, the lower end of each open conduit is connected to a nozzle connected to the open conduit through the bearing; the upper part of the nozzle is a hollow tube and connected to the outer ring of the bearing, and the lower part is an inverted regular hexagonal platform; the inverted regular hexagonal platform Bottom conduits are provided on the lower bottom of the bottom surface for vertically impacting the soil on the seabed; three oblique conduits and three horizontal conduits are alternately arranged on six sides, and the centerlines of the three oblique conduits are aligned with the central axis of the anchor tube. The angle is 30 to 60 degrees; the three horizontal conduits are in the same horizontal plane, and the end of each horizontal conduit is bent along the same circumference and the same direction with a certain arc, and the free rotation of the outer ring of the bearing is used to realize the self-rotation of the nozzle. The invention also discloses the installation method of the suction anchor at the same time.

Description

technical field [0001] The invention relates to a suction anchor capable of penetrating below the seabed and an installation method thereof. Background technique [0002] Suction anchor is a basic structural form widely used in marine engineering and has broad development prospects. Its structure is generally a steel cylinder with a closed top and an open bottom. At first, it falls freely with the help of gravity, and the lower edge of the cylinder is inserted into the soil. When the top of the anchor barrel is in contact with the seabed, the anchor barrel runs down and stops. At this time, the submersible pump is removed, and the installation of the suction anchor is completed. [0003] Generally, the bearing capacity of the suction anchor is mainly provided by the friction between the inner wall and the outer wall of the cylinder and the soil, and when the end of the suction anchor is level with the seabed, the downward penetration of the suction anchor stops, and the end...

AI Technical Summary

Problems solved by technology

Although the device penetrates the suction anchor below the seabed surface, the penetration depth formed by overcoming the normal stress between the end of the suction anchor and the seabed surface is limited.

In addition, the bearing capacity of the suction anchor still mainly comes from the friction between the inner and outer cylinder walls and the seabed soil, and the end of the suction anchor has not been effectively utilized.

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