Anti-erosion protection device for offshore wind power pile foundation and installation method

Abstract

The invention discloses an anti-erosion protection device for an offshore wind power pile foundation. The anti-erosion protection device comprises a clamp ring and an anti-corrosion curtain arranged on the periphery of the clamp ring, wherein first ballasts and second ballasts are arranged on the anti-corrosion curtain at intervals, the directions of the first ballasts are as same as the radial direction of the clamp ring, the directions of the second ballasts are as same as the circumference direction of the clamp ring, and the anti-corrosion curtain is provided with sea grass-shaped materials. The invention further discloses an installation method of the anti-erosion protection device for the offshore wind power pile foundation. According to the provided anti-erosion device, the overallprotection effect can be achieved, and the anti-erosion effect is guaranteed; and the provided installation method can effectively save the installation time.

Description

technical field [0001] The invention belongs to the technical field of offshore wind power engineering, and in particular relates to an anti-scouring protection device and an installation method for offshore wind power pile foundations. Background technique [0002] The pile foundation of offshore wind power is the key to supporting the entire offshore wind turbine, and the cost is about 14% of the entire offshore wind power installation. However, the accidents of offshore wind turbines are mostly caused by the instability of the pile foundation. Due to the action of waves and tidal currents, the sediment around the offshore wind power pile foundation will be scoured to form scour pits, which will have an impact on the stability of the pile foundation. In addition, the water flow mixed with sediment near the seabed surface continuously scours the pile foundation, corrodes and damages the surface of the pile foundation, and in serious cases, it will cause the open collapse of...

AI Technical Summary

Problems solved by technology

Rock riprap protection is used. Since there is no riprap boat dedicated to anti-scouring protection in China (with DP function and a dedicated stone placement machine), it is difficult to lay stones evenly and prevent scouring by using riprap protection. The effect is not very ideal

Moreover, in the process of throwing stones, due to the influence of waves and ocean currents, the stones are easily washed away. This requires divers to go into the water and move the stones to the anti-scouring position. The underwater operation time of divers is short and the workload is very heavy. Moreover, in the process of riprap, it is easy to damage the anti-corrosion paint or sacrificial anode protection of steel pipe piles, resulting in expensive underwater repair costs

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