Anti-scouring system and method for offshore wind power foundation of multi-layer grid strip-shaped structure
An offshore wind power and belt structure technology, applied in wind power generation, infrastructure engineering, wind turbines, etc., can solve the problems of general protection effect and high construction cost, and achieve the effect of strengthening rigidity and enhancing effect
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Embodiment 1
[0030] see figure 1 , an anti-scour system for offshore wind power foundations with a multi-layer grid band structure, including a plurality of grid bands 100; each grid band 100 includes a multi-layer grid layer 101, and each grid layer 101 has a plurality of grids Composed of units 102; each grid unit is surrounded by a number of grids 1;
[0031] Each grid 1 is vertically fixed between two columns 2 through a connecting device 3 ; a closed space surrounded by several grids 1 is a grid unit 102 .
[0032] The grid 1 is made of corrosion-resistant metal material or high-strength fiber material, and its porosity is 20%-50%.
[0033] Column 2 is a corrosion-resistant metal cylinder, which is embedded in the seabed and fixed, and its cross section can be circular, square or other shapes.
[0034] see figure 2 and image 3 As shown, the connection device 3 is a corrosion-resistant metal connector, the cross-sectional shape is a square or a circle with a wedge 31, and the cen...
Embodiment 2
[0040] For grid belts, multiple arrangements can be arranged at non-equal intervals, and the interval between adjacent layers along the main flow direction gradually increases.
[0041] see Figure 4 , an anti-scour system for offshore wind power foundations with a multi-layer grid strip structure, using three grid strips, each grid strip width is L, the first grid strip and the second grid strip are along the direction of water flow The spacing is L1, and the spacing between the second grid strip and the third grid strip along the water flow direction is L2, which satisfies the relationship L2≥L1≥L. The reason for this embodiment is that when the ocean current velocity is too large, the The grid belt cannot play the role of anti-scouring, so a multi-layer grid belt is needed to improve the deceleration effect of the ocean current and the retardation effect of the sediment in it.
Embodiment 3
[0043] The present invention also provides an anti-scouring method for an offshore wind power foundation with a multi-layer grid band structure, based on the anti-scour system for an offshore wind power base with a multi-layer grid band structure in Embodiment 1 or Example 2, comprising the following steps :
[0044] In front of the offshore wind power foundation, one or more grid strips are arranged along the dominant flow direction of the bottom water flow; through the multi-layer grids in the grid strips, the flow velocity of the water flow is reduced, the flow of sediment close to the bottom of the seabed is blocked, and the sediment flow is reduced. The erosion of sand flow on the foundation of offshore wind power.
[0045] Specifically, in each grille strip:
[0046] Step 1. The seawater flows through the first grid unit of the grid belt, the sediment in the seawater is blocked by the grid 1 in the first grid unit, and the seawater and the grid 1 in the first grid unit ...
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