CN211975283U - Offshore wind power suction pile foundation - Google Patents
Offshore wind power suction pile foundation Download PDFInfo
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- CN211975283U CN211975283U CN202020647643.6U CN202020647643U CN211975283U CN 211975283 U CN211975283 U CN 211975283U CN 202020647643 U CN202020647643 U CN 202020647643U CN 211975283 U CN211975283 U CN 211975283U
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- suction pile
- wind power
- pile body
- offshore wind
- connecting column
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
Abstract
The utility model relates to the technical field of offshore wind power facility structures, in particular to an offshore wind power suction pile foundation; the device comprises a fan tower cylinder, a tower frame, a suction pile connecting section and a suction pile body; the force arm of resultant force of the wave flow load to the suction pile body is reduced by inwards offsetting the lower end of the connecting column, so that compared with the prior art, the overturning moment of the wave flow load to the suction pile body is reduced under the condition that the wave flow load is not changed, the problem that soil around the suction pile body fails due to overlarge wave flow load in the horizontal direction in the traditional technology is solved, the weight of the tower can be properly reduced, the steel consumption of the tower is reduced, and the cost is reduced.
Description
Technical Field
The utility model relates to an offshore wind power facility technical field, in particular to offshore wind power suction pile basis.
Background
At present, offshore wind power becomes a research hotspot of global wind power development, all countries in the world use offshore wind power as an important direction of renewable energy development, and China also lists offshore wind power as an important component part emerging strategically.
China is rich in offshore wind energy resources, the development and development of wind power plants are rapid, and various offshore wind turbine foundation forms such as gravity foundations, single-pile foundations, multi-column foundations, suction foundations and the like are applied. The suction foundation can be suitable for the areas where seabed bedrock is buried shallowly and the traditional wind power pile foundation needs offshore rock-socketed construction, so that the defects of long construction period, high risk and high construction cost of the rock-socketed pile are avoided; the method can also be suitable for areas with deep seabed sludge layers and low soil bearing capacity, and avoids the defects of high processing technology requirement, insufficient capacity and insufficient applicability of the large-diameter single pile foundation; and because the suction type foundation has low requirements on construction window period, the construction period can be effectively shortened, and the suction type foundation is rapidly developed in recent years.
However, the conventional connecting section arrangement structure enables the vertical load borne by the suction pile to pass through the rotation center of the suction pile, and the rotation bending moment generated by the horizontal load at the rotation center of the suction pile is large, so that the risk of failure of soil around the suction pile exists.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the problem that the soil body around the suction pile has failure risk due to large bending moment generated at the rotation center of the suction pile caused by the load on the suction pile is solved.
In order to solve the technical problem, the utility model discloses a technical scheme be:
an offshore wind power suction pile foundation comprises a fan tower cylinder, a tower frame, a suction pile connecting section and a suction pile body;
the fan tower cylinder is vertically connected to the center of the upper portion of the tower frame, more than three connecting columns are arranged at the lower end of the tower frame, the number of the suction pile bodies is the same as that of the connecting columns, the lower end of each connecting column is connected to the upper portion of the suction pile body through a suction pile connecting section, and the shortest distance between the lower end of each connecting column and the axis of the fan tower cylinder is the same;
the shape of the suction pile body is a hollow cylinder with an opening at the lower part and a closed upper part, the vertical extension line of the lower end of the connecting column is positioned on the inner side of the axis of the suction pile body correspondingly connected, and the fan tower cylinder, the vertical extension line of the lower end of the connecting column and the axis of the suction pile body correspondingly connected with the connecting column are sequentially positioned on the same vertical plane.
The beneficial effects of the utility model reside in that: the utility model relates to an among the marine wind power suction pile foundation connection section structure, through the inside skew of spliced pole lower extreme and reduce the arm of force of the resultant force of wave current load to suction stake body, thereby compare prior art under the unchangeable condition of wave current load size and reduced the overturning moment of wave current load to suction stake body, the problem of causing the soil body to become invalid around the suction stake body because of the horizontal direction wave current load is too big in the traditional art has been solved, thereby can suitably reduce the weight of pylon, reduce the steel consumption of pylon promptly, reduce cost.
Drawings
Fig. 1 is a schematic diagram of a right side suction pile body of an offshore wind power suction pile foundation according to an embodiment of the present invention under a compressed condition;
fig. 2 is a schematic diagram of the right side suction pile body of the offshore wind power suction pile foundation according to the embodiment of the present invention under tension;
FIG. 3 is a schematic diagram of the prior art when the right side suction pile body of the offshore wind power suction pile foundation is under tension;
fig. 4 is a schematic structural diagram of an offshore wind power suction pile foundation according to embodiment 1 of the present invention;
fig. 5 is a schematic view of a partial structure of an offshore wind power suction pile foundation according to embodiment 2 of the present invention;
fig. 6 is a partial structural plan view of an offshore wind power suction pile foundation according to embodiment 2 of the present invention;
fig. 7 is a partial structural top view of an offshore wind power suction pile foundation according to an embodiment of the present invention;
description of reference numerals:
1. a fan tower; 2. a tower; 21. a vertical single column; 22. a support frame; 221. a cross bar; 222. a diagonal brace; 3. a suction pile connecting section; 4. a suction pile body; 5. connecting columns; 6. a reinforcing plate.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The utility model discloses the most crucial design lies in: the force arm of resultant force of the wave flow load to the suction pile body is reduced by inwards offsetting the lower end of the connecting column, so that the overturning moment of the wave flow load to the suction pile body is reduced compared with the prior art under the condition that the wave flow load is not changed.
Referring to fig. 1 to 7, the utility model relates to an offshore wind power suction pile foundation, which comprises a wind turbine tower 1, a tower 2, a suction pile connecting section 3 and a suction pile body 4;
the fan tower cylinder 1 is vertically connected to the center of the upper portion of the tower frame 2, more than three connecting columns 5 are arranged at the lower end of the tower frame 2, the number of the suction pile bodies 4 is the same as that of the connecting columns 5, the lower end of each connecting column 5 is connected to the upper portion of the suction pile body 4 through a suction pile connecting section 3, and the shortest distance between the lower end of each connecting column 5 and the axis of the fan tower cylinder 1 is the same;
the shape of the suction pile body 4 is a hollow cylinder with an opening at the lower part and a closed upper part, the vertical extension line of the lower end of the connecting column 5 is positioned on the inner side of the axis of the suction pile body 4 correspondingly connected, and the vertical extension lines of the lower ends of the fan tower cylinder 1 and the connecting column 5 and the axis of the suction pile body 4 correspondingly connected with the connecting column 5 are sequentially positioned on the same vertical plane.
Fig. 1-3 are for explaining the working principle of the present invention, the suction pile foundation structure is simplified, the rectangular parallelepiped at the lower part represents the suction pile body 4, and the diagonal rod at the upper part represents the total of the tower frame 2 and the suction pile connecting section 3.
In the above offshore wind power suction pile foundation structure, since the vertical extension line of the lower end of the connecting column 5 is located inside the axis of the suction pile body 4 correspondingly connected, that is, the vertical extension line of the lower end of the connecting column 5 is located between the vertical extension line of the wind turbine tower 1 and the axis of the suction pile body 4, that is, the lower end of the connecting column 5 is not located on the extension line of the suction pile body 4 as usual, but deviates a distance to the inside of the whole foundation, such arrangement causes the structure of the suction pile connecting section 3 to be irregular, but such structure enables the suction pile body 4 to have a stronger bearing capacity, as shown in fig. 1, after the suction pile foundation is installed at the sea bottom, under the wave flow load of seawater, the suction pile can bear the wave flow load and generate a certain bending moment, as shown in fig. 1 and fig. 2, taking the suction pile body 4 near the right side as an example, as shown in fig. 1, when wave current load is rightward, the right suction pile body 4 is pressed obliquely rightward and downward, the horizontal component Fx faces rightward, the vertical component Fy faces downward, and as Fx is far larger than Fy, the horizontal component Fx borne by the upper portion of the suction pile body 4 can cause the suction pile body 4 to generate certain bending moment, namely, overturning moment is formed between the upper portion of the suction pile body 4 and a certain point (rotation center) of the axis of the suction pile body 4, and if the borne wave current load is too large, soil around the suction pile body 4 can fail, so that foundation loosening is caused; as shown in fig. 2 and fig. 3, when the wave flow load is leftward, the right suction pile body 4 is subjected to a pulling force which is inclined upward to the left, and at this time, the horizontal component Fx thereof is leftward and the vertical component Fy thereof is upward, because Fx is much larger than Fy, the horizontal component Fx which is received at the upper portion of the suction pile body 4 will cause the suction pile body 4 to generate a certain bending moment, and if the wave flow load is too large, the soil around the suction pile body 4 will be disabled in the same way. The utility model improves the orientation of the lower end of the connecting column 5 of the tower 2, fig. 3 is prior art, namely the lower end of the connecting column 5 is positioned on the axis of the suction pile body 4, and fig. 1 and fig. 2 are technical solutions of the utility model, namely the lower end of the connecting column 5 deviates from the axis of the suction pile body 4 and deviates to the inner side, please refer to fig. 2 and fig. 3, the resultant force a of Fx and Fy and the force arm of the rotation center in fig. 2 are shorter than the force arm b of the resultant force of Fx and Fy in fig. 3, because the overturning moment is equal to the resultant force multiplied by the resultant force of Fx and Fy and is corresponding to the force arm, under the condition that the resultant force of Fx and Fy is not changed, the overturning moment borne by fig. 2 is smaller than the overturning moment borne by fig. 3, and the suction pile body 4 on the side of pressure is also the same reason, the resultant force of the wave flow load to the suction pile body 4 on the suction pile body 4 is reduced by the inward deviation of the lower end of the connecting column 5, thereby compared with, the problem of in the traditional art cause the soil body around suction pile body 4 to become invalid because of the too big load of horizontal direction wave current is solved to can suitably reduce the weight of pylon 2, reduce the steel consumption of pylon 2 promptly, reduce cost.
Further, in the offshore wind power suction pile foundation structure, a reinforcing plate is fixed to the upper portion of the suction pile body 4.
The reinforcing plate can be an arc-shaped annular plate or an equal-height annular plate, and the arrangement position can be the outer side or the inner side of the suction pile connecting section 3.
Further, in the offshore wind power suction pile foundation structure, the upper end of the suction pile body 4 is provided with an exhaust hole, and an exhaust valve is installed at the exhaust hole.
Further, in the above offshore wind power suction pile foundation structure, the tower frame 2 includes a vertical single column 21 and a support frame 22, and the connecting column 5 is fixedly connected with the vertical single column 21 through the support frame 22.
Further, in the above offshore wind power suction pile foundation structure, the axis of the connecting column 5 is in the vertical direction.
Further, in the above offshore wind power suction pile foundation structure, the support frame 22 includes a cross bar 221 and a diagonal brace 222, and the cross bar 221, the diagonal brace 222 and the vertical single column 21 form a right triangle.
Further, in the foundation structure of the offshore wind power suction pile, the connecting column 5 is obliquely arranged, and an extension line of an axis of the connecting column 5 is intersected with an extension line of an axis of the wind turbine tower tube 1.
Further, in the offshore wind power suction pile foundation structure, the suction pile connecting section 3 and the suction pile body 4 are fixedly connected through a bolt connection mode, a welding mode or a riveting mode.
The upper structure of the suction pile connecting section 3 can be in the form of a jacket, a single pile and an inclined strut.
The suction pile connecting section 3 consists of a top plate, an inner steel pipe and a T-shaped plate.
And the top plate of the suction pile connecting section 3 is eccentrically arranged. The superstructure main member axis passes through the centre of the top plate of the suction pile attachment section 3.
The suction pile is a single-cabin or multi-cabin suction pile.
The installation process of the offshore wind power suction pile foundation on the seabed is as follows:
after the tower frame 2, the connecting column 5, the suction pile connecting section 3 and the suction pile body 4 are combined into a whole, the whole is transported to a designated construction station in a floating mode, the whole is sunk to the surface of a seabed, preliminary sinking penetration is completed under the action of self weight, then seawater in the suction pile is pumped out to form an internal-external pressure difference and a seepage field, sinking penetration of the suction pile body 4 is further completed, the suction pile and surrounding soil bodies generate negative pressure and are firmly adsorbed to the soil bodies of the seabed, and finally the fan tower barrel 1 is installed on the tower frame 2.
Example 1
An offshore wind power suction pile foundation comprises a fan tower barrel 1, a tower frame 2, a suction pile connecting section 3 and a suction pile body 4; the fan tower cylinder 1 is vertically connected to the center of the upper portion of the tower frame 2, more than three connecting columns 5 are arranged at the lower end of the tower frame 2, the number of the suction pile bodies 4 is the same as that of the connecting columns 5, the lower end of each connecting column 5 is connected to the upper portion of the suction pile body 4 through a suction pile connecting section 3, and the shortest distance between the lower end of each connecting column 5 and the axis of the fan tower cylinder 1 is the same; the shape of the suction pile body 4 is a hollow cylinder with an opening at the lower part and a closed upper part, the vertical extension line of the lower end of the connecting column 5 is positioned on the inner side of the axis of the suction pile body 4 correspondingly connected, and the vertical extension lines of the lower ends of the fan tower cylinder 1 and the connecting column 5 and the axis of the suction pile body 4 correspondingly connected with the connecting column 5 are sequentially positioned on the same vertical plane. And a reinforcing plate is fixed on the upper part of the suction pile body 4. And the upper end of the suction pile body 4 is provided with an exhaust hole, and an exhaust valve is arranged at the exhaust hole. The connecting column 5 is obliquely arranged, and the extension line of the axis of the connecting column 5 is intersected with the extension line of the axis of the fan tower cylinder 1. The suction pile connecting section 3 and the suction pile body 4 are fixedly connected through a bolt connection mode, a welding mode or a riveting mode.
Example 2
An offshore wind power suction pile foundation is characterized by comprising a wind turbine tower barrel 1, a tower frame 2, a suction pile connecting section 3 and a suction pile body 4; the fan tower cylinder 1 is vertically connected to the center of the upper portion of the tower frame 2, more than three connecting columns 5 are arranged at the lower end of the tower frame 2, the number of the suction pile bodies 4 is the same as that of the connecting columns 5, the lower end of each connecting column 5 is connected to the upper portion of the suction pile body 4 through a suction pile connecting section 3, and the shortest distance between the lower end of each connecting column 5 and the axis of the fan tower cylinder 1 is the same; the shape of the suction pile body 4 is a hollow cylinder with an opening at the lower part and a closed upper part, the vertical extension line of the lower end of the connecting column 5 is positioned on the inner side of the axis of the suction pile body 4 correspondingly connected, and the vertical extension lines of the lower ends of the fan tower cylinder 1 and the connecting column 5 and the axis of the suction pile body 4 correspondingly connected with the connecting column 5 are sequentially positioned on the same vertical plane. And a reinforcing plate is fixed on the upper part of the suction pile body 4. And the upper end of the suction pile body 4 is provided with an exhaust hole, and an exhaust valve is arranged at the exhaust hole. The tower 2 comprises a vertical single column 21 and a support frame 22, and the connecting column 5 is fixedly connected with the vertical single column 21 through the support frame 22. The axis of the connecting column 5 is vertical. The support frame 22 comprises a cross bar 221 and a diagonal brace 222, and the cross bar 221, the diagonal brace 222 and the vertical single column 21 form a right triangle. The suction pile connecting section 3 and the suction pile body 4 are fixedly connected through a bolt connection mode, a welding mode or a riveting mode.
To sum up, the utility model provides a pair of among the marine wind power suction stake basic connection section structure, through the inside skew of spliced pole lower extreme and reduce the arm of force of the resultant force of wave current load to suction stake body to compare prior art under the unchangeable condition of wave current load size and reduced the moment of overturning of wave current load to suction stake body, solved in the conventional art because of the too big problem that causes the soil body to become invalid around the suction stake body of horizontal direction wave current load, thereby can suitably reduce the weight of pylon, reduce the steel volume that uses of pylon promptly, reduce cost.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (8)
1. An offshore wind power suction pile foundation is characterized by comprising a fan tower cylinder, a tower frame, a suction pile connecting section and a suction pile body;
the fan tower cylinder is vertically connected to the center of the upper portion of the tower frame, more than three connecting columns are arranged at the lower end of the tower frame, the number of the suction pile bodies is the same as that of the connecting columns, the lower end of each connecting column is connected to the upper portion of the suction pile body through a suction pile connecting section, and the shortest distance between the lower end of each connecting column and the axis of the fan tower cylinder is the same;
the shape of the suction pile body is a hollow cylinder with an opening at the lower part and a closed upper part, the vertical extension line of the lower end of the connecting column is positioned on the inner side of the axis of the suction pile body correspondingly connected, and the fan tower cylinder, the vertical extension line of the lower end of the connecting column and the axis of the suction pile body correspondingly connected with the connecting column are sequentially positioned on the same vertical plane.
2. The offshore wind power suction pile foundation of claim 1, wherein a reinforcing plate is fixed to the upper portion of the suction pile body.
3. The offshore wind power suction pile foundation of claim 1, wherein the upper end of the suction pile body is provided with an exhaust hole, and an exhaust valve is installed at the exhaust hole.
4. The offshore wind power suction pile foundation of claim 1, wherein the tower comprises a vertical mono-column and a support frame, the connection column being fixedly connected to the vertical mono-column by the support frame.
5. The offshore wind power suction pile foundation of claim 4, wherein the axis of the connecting column is vertical.
6. The offshore wind power suction pile foundation of claim 4, wherein the support frame comprises a cross bar and a diagonal brace, and the cross bar, the diagonal brace and the vertical single column enclose a right triangle.
7. The offshore wind power suction pile foundation of claim 1, wherein the connecting column is arranged obliquely, and an extension line of an axis of the connecting column intersects with an extension line of an axis of a wind turbine tower.
8. The offshore wind power suction pile foundation of claim 1, wherein the suction pile connection section and the suction pile body are fixedly connected by means of bolting, welding or riveting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020647643.6U CN211975283U (en) | 2020-04-26 | 2020-04-26 | Offshore wind power suction pile foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020647643.6U CN211975283U (en) | 2020-04-26 | 2020-04-26 | Offshore wind power suction pile foundation |
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| Publication Number | Publication Date |
|---|---|
| CN211975283U true CN211975283U (en) | 2020-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020647643.6U Active CN211975283U (en) | 2020-04-26 | 2020-04-26 | Offshore wind power suction pile foundation |
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| Country | Link |
|---|---|
| CN (1) | CN211975283U (en) |
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2020
- 2020-04-26 CN CN202020647643.6U patent/CN211975283U/en active Active
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