Offshore wind turbine multi-pile jacket foundation

Abstract

The utility model discloses a kind of offshore wind turbine multi-pile jacket foundation, including wind turbine transition section, general column and guide pipe frame column are provided on wind turbine transition section, general column is placed in the center part of wind turbine transition section, guide pipe frame column is provided with six, six guide pipe frame columns are circumferentially distributed in the outer ring of general column in a group of two, general column is provided with middle column in, guide pipe frame column is all provided with guide pipe frame main leg, and the endpoint of each guide pipe frame main leg same end is enclosed to form equilateral triangle with middle column as center, respectively form three center lines, and the center line of the same guide pipe frame main leg two ends is at angle, the center line has 12, and the bottom end of middle column and guide pipe frame main leg is all provided with steel pipe pile.The utility model evenly arranges six guide pipe frame main legs that are inclined and twist direction opposite in two in middle column around, play a series effect to main body structure, form a stable space hexagon structure, more stronger ability to resist horizontal bending moment, with higher structural rigidity.

Claims

1. A multi-pile jacket foundation for an offshore wind turbine, comprising a wind turbine transition section (1), characterized in that, The wind turbine transition section (1) is provided with a general column (2) and a jacket support column (3). The general column (2) is located in the center of the wind turbine transition section (1). There are six jacket support columns (3). The six jacket support columns (3) are distributed in pairs around the outer circle of the general column (2). The general column (2) is connected to the middle column (4). The jacket support columns (3) are all connected to the jacket main legs (5). The endpoints of the same end of each jacket main leg (5) form an equilateral triangle centered on the middle column (4), forming three center lines respectively. The center lines at both ends of the same jacket main leg (5) form an angle. The angle is a torsion angle. There are 12 center lines. The bottom ends of the middle column (4) and the jacket main legs (5) are provided with steel pipe piles (6).

2. The offshore wind turbine multi-pile jacket foundation according to claim 1, characterized in that, The angle between the center lines of the same top of the two main legs (5) of the same group is 40°, and the angle between the center lines of the same bottom of the two main legs (5) of the same group is 80°.

3. The offshore wind turbine multi-pile jacket foundation according to claim 1, characterized in that, The angle between the center lines of the same top end of two adjacent main legs (5) of the duct frame from different groups is 80°, and the angle between the center lines of the same bottom end of two adjacent main legs (5) of the duct frame from different groups is 40°.

4. The offshore wind turbine multi-pile jacket foundation according to claim 1, characterized in that, The angle between the centerlines at both ends of the same main leg (5) of the guide frame is 20°.

5. A multi-pile jacket foundation for offshore wind turbines according to claim 1, characterized in that, A first diagonal brace (7) and a second diagonal brace (8) are provided between two adjacent main legs (5) of the guide frame, and an angle is formed between the first diagonal brace (7) and the second diagonal brace (8), and the angle is an acute angle.

6. A multi-pile jacket foundation for offshore wind turbines according to claim 5, characterized in that, The intermediate column (4) includes an upper section (9), a first conical section (10), a middle section (11), a second conical section (12), and a bottom section (13) connected in sequence. The upper section (9) is connected to the general column (2). The first conical section (10) is trumpet-shaped. A third diagonal brace (14) is provided between the middle section (11) and the main leg (5) of the guide frame. A fourth diagonal brace (15) is provided between the second conical section (12) and the main leg (5) of the guide frame. An angle is formed between the third diagonal brace (14) and the fourth diagonal brace (15). The angle is acute.

7. A multi-pile jacket foundation for offshore wind turbines according to claim 6, characterized in that, The inner wall of the main leg (5) of the jacket is provided with a guide block (16), and the bottom end of the main leg (5) of the jacket is provided with a packer (17).

8. A multi-pile jacket foundation for offshore wind turbines according to claim 7, characterized in that, The inner walls of the middle section (11) and the bottom section (13) are provided with guide blocks (16), and the bottom end of the bottom section (13) is provided with a packer (17).

9. A multi-pile jacket foundation for offshore wind turbines according to claim 8, characterized in that, The guide blocks (16) correspond to the ends of the first diagonal brace (7), the second diagonal brace (8), the third diagonal brace (14), and the fourth diagonal brace (15), respectively.

10. A multi-pile jacket foundation for offshore wind turbines according to claim 6, characterized in that, The diameter of the bottom section (13) is smaller than the diameter of the middle section (11), and the diameter of the middle section (11) is smaller than the diameter of the top section (9).

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