Current scouring weakening offshore wind turbine single pile foundation protecting device

Abstract

The invention discloses a current scouring weakening offshore wind turbine single pile foundation protecting device. The current scouring weakening offshore wind turbine single pile foundation protecting device comprises baffles, ribbon curtains, connecting plates and ballasts, wherein the baffles are composed of internal layers and external layers and arranged in a staggered mode around a singlepile to increase the number of flow paths of seawater around the single pile; the neighboring external-layer baffles as well as the neighboring internal-layer baffles are connected through the ribboncurtains; the ribbon curtains are composed of a plurality of floating ribbons which are distributed on the connecting plates in a plum flower shape to increase the flowing resistance of waters; the upper ends and the lower ends of the baffles and the ribbon curtains are provided with the connecting plates with bolt holes; the external-layer baffles and the ribbon curtains, which are neighboring toeach other, are connected through bolts penetrating through the bolt holes in the connecting plates; the ballasts are sand wrapped in geotechnical fabrics or the like to avoid floating the overall structure. Through reasonable arrangement of the baffles and the ribbon curtains, the current scouring weakening offshore wind turbine single pile foundation protecting device can achieve multiple speedreduction of sea currents, effectively solve the problem of scouring loss of soil surrounding the single pile and achieve the effects of protecting the bearing performance of offshore wind turbine single piles.

Description

technical field [0001] The invention relates to the field of marine engineering, in particular to a single-pile foundation protection device for offshore wind turbines that reduces the scouring effect of water flow. Background technique [0002] my country's coastal areas are actively promoting the construction of offshore wind farms. The natural environment of offshore wind farms is harsher than that on land, and the loads on structures are more complex. Studies have shown that when the seabed flow rate exceeds a certain critical value, the soil around the foundation of the offshore wind turbine will be taken away by the water flow to form a scour pit, which will reduce the burial depth of the pile foundation, and the lateral displacement and vertical bearing capacity of the pile will decrease. It is greatly affected and poses a serious threat to the safety and stability of pile foundations and generator sets. However, in view of the problem of seawater scouring around the...

AI Technical Summary

Problems solved by technology

Studies have shown that when the seabed flow rate exceeds a certain critical value, the soil around the foundation of the offshore wind turbine will be taken away by the water flow to form a scour pit, which will reduce the burial depth of the pile foundation, and the lateral displacement and vertical bearing capacity of the pile will decrease. It is greatly affected and poses a serious threat to the safety and stability of pile foundations and generator sets

However, in view of the problem of seawater scouring around the pile foundation to produce soil pits, wing columns are usually built obliquely from the main body of the single pile for reinforcement. Although the effect is better, the construction cost is greatly increased, and it does not cause local erosion. To solve the problem at the source, there is also a method of simulating marine vegetation by laying plastic ribbons, but the flow of seabed water is complicated, and it is easy to get tangled and lose its effect

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