Offshore fan foundation scour prevention structure

Abstract

The invention provides an offshore fan foundation scour prevention structure. The offshore fan foundation scour prevention structure comprises an annular pile skirt which is arranged on the outer sideof a pile foundation in a sleeving manner and fixed to a seabed surface, the annular pile skirt comprises a mounting hole allowing the pile foundation to penetrate through, a scour face with the height, extending to the seabed, from the mounting hole gradually reduced, and a buffer face mounted on the connecting position of the scour face and the seabed surface, according to the offshore fan foundation scour prevention structure, through attaching of inclined faces of the scour face and the buffer face on the annular pile skirt and the seawater speed change gradient generated by ocean currents or tides, speeds, arriving at the annular pile skirt, of the ocean currents or tides are basically consistent, the front-pile vortex generated by the ocean currents nearby the pile foundation can beweakened to the maximization, a scour pit generated by the vortexes can be avoided, according to the scour prevention structure, the structure is simple, machining is easy, the building cost is low,the later-period maintaining is convenient, the scour prevention effect is good, and bearing force of the pile foundation and the fan running reliability are ensured.

Description

technical field [0001] The invention relates to the technical field of marine engineering structures, in particular to an anti-scouring structure for offshore wind turbine foundations. Background technique [0002] Offshore wind resources are abundant, the change of wind speed with height is small, the intensity of turbulence is low, the friction force at sea level is small, and the fatigue load acting on wind turbines is also small, and offshore wind power generation is disturbed by noise, birds, and electromagnetic waves Smaller, at the same time can not occupy the land resources of the land. Therefore, offshore wind power has become the fastest growing green energy technology in the world. [0003] Affected by the obstruction of pile foundations and the velocity gradient of ocean currents, scours are likely to occur around pile foundations constructed at sea, taking away the sediment around pile foundations, resulting in reduced bearing capacity of piles, inclination of ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of high investment cost and high maintenance cost in the later stage in the scheme of using concrete or sandstone laying in the anti-scouring structure of the foundation of the offshore wind turbine, and the anti-scouring structure with the bottom sill and the overflow plate structure is adopted. In the structure, it is easy to accumulate sand and gravel in the bottom sill, which leads to the disappearance of the stepped structure of the bottom sill and cannot play the role of destroying the horseshoe vortex formed by the ocean current. Provide an anti-scouring structure for offshore wind turbine foundations

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