Deep-sea bamboo joint type suction anchor

Abstract

The invention discloses a deep-sea bamboo joint type suction anchor. The deep-sea bamboo joint type suction anchor comprises a bamboo joint type anchor cylinder, a bearing and a rotatable nozzle. The bamboo joint type anchor cylinder is a cylinder body with an open bottom and a closed top. A plurality of convex bamboo-joint-shaped structures around the cylinder body are arranged at the middle upper portion of the cylinder body of the anchor cylinder at fixed intervals. The middle lower portion of the cylinder body of the anchor cylinder is in an expanded cylinder shape, and the external diameter of the expanded portion of the cylinder is larger than that of each bamboo-joint-shaped structure. A drainage hole communicated with the internal portion of the cylinder body is formed in a top cover of the anchor cylinder. The rotatable nozzle is located in the cylinder body, is connected with the inner wall of the top cover of the anchor cylinder through the bearing and is fixed to the circle center of the top cover of the bamboo joint type anchor cylinder, and therefore the needed suction anchor is formed. According to the suction anchor, side friction resistance force can be increased, it is ensured that the suction anchor can sink to a preset designed depth, and the vertical bearing capacity and ultimate anti-uplifting bearing capacity of the suction anchor are significantly improved.

Description

technical field [0001] The invention relates to a civil technology, in particular to a deep-sea bamboo joint type suction anchor. Background technique [0002] The suction anchor structure is generally an inverted cylindrical shape with a closed top and an open bottom. The side wall of the anchor tube is made of steel, and the top cover is generally made of steel and reinforced concrete. At first, it sinks into the seabed to a certain depth with the help of gravity, and then uses an underwater submersible pump to pump out the water in the cylinder to form a pressure difference between the inside and outside, so that the anchor cylinder slowly sinks. When the top of the anchor barrel contacts the seabed, the sinking of the anchor barrel stops, and the submersible pump is removed at this time, and the installation of the suction anchor is completed. It is widely used because of its convenient construction, fast construction speed (for example, a suction foundation with a diam...

AI Technical Summary

Problems solved by technology

The suction anchor includes an anchor barrel and a reinforcing plate connected with a skirt, which solves the problems of high construction cost of the suction foundation, small horizontal bearing capacity, and erosion of the seabed soil around the upper part of the barrel, but the suction anchor cannot increase the lateral Frictional resistance, unable to improve the vertical bearing capacity and ultimate uplift bearing capacity of the suction anchor

[0007] (3) The Chinese patent application number 200910225767.3 introduces an expansion-tight deep-sea suction anchor and its installation method. The suction anchor can increase the vertical bearing capacity and pull-out resistance of the deep-sea anchor, but the suction anchor cannot greatly increase the Side friction resistance, the installation method is complicated and cannot greatly improve the vertical bearing capacity and ultimate uplift bearing capacity of the suction anchor

The suction anchor includes an anchor tube, an attached skirt, multiple tension chains and guide rings, and has a good vertical ultimate bearing capacity, but the suction anchor cannot greatly increase the side friction resistance, and its installation method is complicated and cannot be greatly improved. Suction anchor vertical bearing capacity and ultimate uplift bearing capacity

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