Negative pressure cylinder and installation method suitable for marine wind power to penetrate below the seabed

Abstract

The invention discloses a negative pressure cylinder suitable for marine wind power to penetrate below the seabed, comprising a cylinder with an opening downward, a vertical cylinder at the center of the upper end surface of the cylinder, and an upper end surface of the cylinder on one side of the vertical cylinder. A drain hole communicating with the inside of the cylinder and several evenly distributed water inlet holes are opened on the top, and the lower end of each water inlet hole inside the cylinder is connected with a self-rotating nozzle. The invention also discloses the installation method of the negative pressure cylinder at the same time. By alternately switching the jet pump and the suction pump, the penetration depth of the negative pressure cylinder can be freely controlled within a certain range. At the same time, when the end of the negative pressure cylinder penetrates below the seabed, the seabed soil gradually buries the end due to the scouring of the submarine subsurface flow, so that the effective use of the end greatly improves the ultimate pull-out bearing capacity and overturning resistance of the negative pressure cylinder ability. The negative pressure cylinder makes full use of the reaction force of high-pressure water to realize the self-rotation of the nozzle, which greatly improves the impact range of high-pressure water on the seabed soil and effectively avoids local impact.

Description

technical field [0001] The invention relates to a negative pressure cylinder suitable for penetrating ocean wind power down to below the seabed and an installation method thereof. Background technique [0002] As a new type of mooring and foundation form, the barrel foundation has great application value in marine engineering. At present, it is mainly used in the mooring system of marine structures, platform foundations, self-buried negative pressure anchors, and the resistance of induced cushion platforms. Sliding piles, breakwaters and offshore wind power foundations. Among them, the application of the cylindrical foundation on the offshore wind power foundation is a new application form, and its core part is a negative pressure cylinder that uses negative pressure to penetrate into the soil. Similar to the suction anchor principle, the negative pressure cylinder is also an inverted cylindrical structure, which uses the negative pressure sinking principle to make the cyli...

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