CN213014353U - Pile-bucket combined type foundation connected by offshore wind turbine hinged support - Google Patents
Pile-bucket combined type foundation connected by offshore wind turbine hinged support Download PDFInfo
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- CN213014353U CN213014353U CN202020503047.0U CN202020503047U CN213014353U CN 213014353 U CN213014353 U CN 213014353U CN 202020503047 U CN202020503047 U CN 202020503047U CN 213014353 U CN213014353 U CN 213014353U
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Abstract
The utility model relates to an articulated stake bucket combined type basis that supports and connect of offshore wind turbine. The utility model aims at providing a simple structure, construction are convenient, safe and reliable's offshore wind turbine articulates stake bucket combined type basis that supports the connection. The technical scheme of the utility model is that: the foundation comprises a large-diameter single pile, a suction bucket foundation and a hinged support structure; the center of the suction bucket foundation is provided with a vertically through inserting hole, and the inner wall of the inserting hole is provided with a plurality of circles of reinforcing keys; a sleeve which is concentric and coaxial with the insertion hole is arranged above the suction bucket foundation, a plurality of circles of reinforcing keys are arranged on the inner wall of the sleeve, and the sleeve is connected with the suction bucket foundation through a hinged support structure which can be retracted and lifted; the major diameter single pile is coaxially inserted in the central insertion hole of the sleeve and the suction bucket foundation in sequence, and contacts with the reinforcing keys in the sleeve and the insertion hole, a plurality of grouting holes are formed in the major diameter single pile, and the grouting holes are arranged corresponding to the positions between two adjacent reinforcing keys on the sleeve and the insertion hole.
Description
Technical Field
The utility model relates to an articulated stake bucket combined type basis that supports and connect of offshore wind turbine is applicable to offshore wind power generation machine's technical field.
Background
In recent years, offshore wind power in China develops rapidly, and the installed capacity of offshore wind turbines in China reaches 5000MW up to 2020 according to national planning. The wind power foundation is used as an important component of an offshore wind turbine, and the cost of the wind power foundation accounts for about 30% of the total engineering cost, so that the wind power foundation becomes one of the factors playing a role in controlling the cost of an offshore wind power plant.
According to statistics, the current single pile foundation exceeds 65% in the global offshore wind power foundation form, and is the wind power foundation form which is most used. With the development of the offshore wind turbine power towards large-scale, the geological conditions of the site are poor, the wave force is large, the pile diameter, the pile length and the pile weight of a single-pile foundation are further increased, but the offshore construction equipment matched with the pile diameter, the pile length and the pile weight are less, the construction cost is high, and the development and utilization of offshore wind energy resources are restricted.
The suction bucket foundation is widely applied to offshore and offshore projects due to high rigidity, strong deformation resistance, convenience in installation and high comprehensive bearing performance, but the penetration depth of the suction bucket foundation is shallower than that of a pile foundation, the requirement on the bearing capacity of a shallow soil body is high, and the suction bucket foundation is independently utilized as an offshore wind power foundation to have greater risk.
If a composite foundation structure form combining the pile and the suction bucket can be adopted, the respective advantages of the pile and the suction bucket are fully exerted, the deformation of a central large-diameter single pile under extreme load is reduced through the huge rigidity of an external suction bucket structure, the integral rigidity and the natural vibration frequency of the fan foundation are increased, and the pile diameter or the pile length is further reduced; meanwhile, the characteristics of cooperative installation of the large-diameter pile and the suction bucket are utilized to quickly complete foundation offshore construction (the installation period is close to that of a single pile), and a series of problems of pile stabilization, leveling and the like in large-diameter single pile construction are solved.
Along with the increase of water depth, the length of a cantilever of the water middle section of the single-pile structure is correspondingly increased, and under the action of upper wind, wave and current loads, the deformation of a cantilever section pile body is very obvious, so that a wind turbine generator which is tall up to 200 meters generates very large horizontal shaking, and the engineering safety is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: aiming at the problems, the pile-bucket combined type foundation which is simple in structure, convenient to construct, safe and reliable and is connected with the offshore wind turbine hinged support is provided.
The utility model adopts the technical proposal that: the utility model provides an articulated stake bucket combined type basis of supporting connection of offshore wind turbine which characterized in that: the large-diameter single pile suction bucket foundation comprises a large-diameter single pile, a suction bucket foundation and a hinged support structure;
the center of the suction bucket foundation is provided with a vertically through insertion hole, and the inner wall of the insertion hole is provided with a plurality of circles of reinforcing keys;
a sleeve which is concentric and coaxial with the insertion hole is arranged above the suction bucket foundation, a plurality of circles of reinforcing keys are arranged on the inner wall of the sleeve, and the sleeve is connected with the suction bucket foundation through a hinged support structure which can be retracted and lifted;
the large-diameter single pile is sequentially coaxially inserted into the central insertion holes of the sleeve and the suction bucket foundation, contacts with the sleeve and the reinforcing keys in the insertion holes, is provided with a plurality of grouting holes, and is arranged corresponding to the positions between two adjacent reinforcing keys on the sleeve and the insertion holes;
the sleeve is connected with the large-diameter single pile through grout injected through the grout injection hole; and the large-diameter single piles of the insertion holes of the suction bucket foundation are connected through grout injected through the grouting holes.
The hinged support structure is provided with a plurality of main support rods, one end of each main support rod is connected with the sleeve through a hinge, the other end of each main support rod is connected with a sliding block through a hinge, and the sliding blocks are arranged at the top of the suction bucket foundation and can move along the radial direction of the suction bucket foundation;
a sliding chute which is arranged along the radial direction of the suction bucket foundation is arranged at the top of the suction bucket foundation corresponding to the sliding block, and a guide rail which is matched with the sliding block is arranged at one end of the sliding chute which is far away from the center of the suction bucket foundation;
the slider is provided with a fixing bolt, and the middle part of the sliding groove is provided with a fixing groove matched with the fixing bolt.
The middle part of the main support rod is connected with one end of the reinforcing support rod through a third hinge, and the other end of the reinforcing support rod is connected with the suction bucket foundation through a fourth hinge.
And the center of the top surface of the suction bucket foundation is provided with a containing groove matched with the sleeve.
The edge of the upper part of the suction bucket foundation is provided with a circle of impingement plate, and the impingement plate is connected with the outer side wall of the suction bucket foundation through a plurality of uniformly distributed supporting rib plates.
The interior of the suction bucket foundation is divided into a plurality of cabin bodies through a plurality of cabin dividing plates, and reinforcing plates are arranged among the cabin dividing plates.
The top surface of the suction bucket foundation is provided with a plurality of lifting rings.
The method for installing the pile-bucket combined type foundation connected by the offshore wind turbine hinged support is characterized by comprising the following steps of:
hoisting the suction bucket foundation to a specified construction position;
the suction bucket foundation is penetrated into the seabed under the dead weight, and after the dead weight penetration is stable, the seabed enters negative pressure for vacuum pumping, and seawater in the suction bucket foundation is pumped out to complete negative pressure penetration;
slowly drawing the large-diameter single pile to pass through the sleeve and the insertion hole until the bottom end of the suction bucket foundation contacts the seabed to prepare for driving the single pile;
performing a piling process, and driving the large-diameter single pile to a specified depth;
grouting is conducted between the sleeve and the large-diameter single pile and between the plug-in mounting hole and the large-diameter single pile through the grouting hole, the whole structure is cemented, and the installation of the pile-bucket foundation is completed.
During transportation, the hinged support structure and the sleeve are retracted into the suction bucket foundation;
after the sleeve is conveyed to a designated construction position, the hinged support structure is unfolded, so that the sleeve is fixed at a corresponding position above the suction bucket foundation through the hinged support structure.
The utility model has the advantages that:
the utility model discloses combine major diameter single pile and suction bucket foundation, the advantage on two kinds of foundations of full play, and the work progress mutual noninterference, two parts set up the enhancement key synergism from top to bottom simultaneously, effectively improve the side direction support of pile body, are showing the level that reduces the pile body to warping.
The utility model discloses set up protecting against shock plate and support floor at suction bucket foundation edge, enlarge the area of contact of staving and the soil body, increased the side frictional resistance of ladle body, improved the bearing capacity of structure to can effectively prevent the influence of washing away of sea water, saved single pile basis scour prevention special facility and expense.
The utility model discloses an articulated bearing structure cooperation sleeve pipe can provide the powerful support of section of diving pile body, and articulated design makes bearing structure can freely receive and release the rise, has reduced the installation procedure and the required space of basis, can effectively reduce the lateral displacement of single pile installation simultaneously, improves structural stability, and the security is reliable.
Drawings
Fig. 1 is a schematic structural diagram of the embodiment.
Fig. 2 is a top view of the embodiment.
Fig. 3 is a sectional view of the embodiment.
Fig. 4 is a schematic view of a fixing groove in the embodiment.
Fig. 5 is a schematic view of an installation process of the embodiment.
Detailed Description
As shown in fig. 1 to 3, the present embodiment is a pile-bucket composite foundation for offshore wind turbine hinge support connection, which includes a large-diameter single pile 1, a suction bucket foundation 3, and a hinge support structure.
In the embodiment, the center of the suction bucket foundation 3 is provided with a vertically through insertion hole with the size slightly larger than the diameter of the large-diameter single pile 1, the inner wall of the insertion hole is provided with 3 circles of reinforcing keys 4, and the thickness of each reinforcing key 4 is determined according to the difference between the diameter of the insertion hole and the diameter of the large-diameter single pile 1.
The inside of the suction bucket foundation 3 is divided into 3 cabin bodies with the same size through 3 cabin dividing plates 22, and reinforcing plates 8 are arranged among the cabin dividing plates 22, so that the rigidity of the suction bucket foundation 3 is increased, and the deformation of the foundation in the installation process is reduced. The negative pressure water pumping holes 5 are formed in the tops of all the cabin bodies, water can be pumped through the negative pressure water pumping holes 5, so that negative pressure is formed inside and outside the suction bucket-shaped foundation, the negative pressure penetration is further completed, the foundation leveling can be realized by adjusting the water pumping pressure among the cabin bodies, and the installation quality is guaranteed.
In the embodiment, a sleeve which is concentric and coaxial with the insertion hole is arranged above the suction bucket foundation 3, the inner diameter of the sleeve is equivalent to the aperture of the insertion hole, and 3 circles of reinforcing keys 4 are arranged on the inner wall.
In this example, the casing is connected to the suction bucket foundation 3 below through a hinge support structure capable of being retracted and raised, the hinge support structure has three main support rods 9 uniformly distributed around the casing, one end of each main support rod 9 is connected to the casing through a first hinge 15, the other end of each main support rod 9 is connected to a sliding block 11 arranged at the top of the suction bucket foundation 3 through a second hinge 16, the middle of each main support rod 9 is connected to one end of a reinforcing support rod 10 through a third hinge 17, and the other end of each reinforcing support rod 10 is connected to the suction bucket foundation 3 through a fourth hinge 18.
In this embodiment, a sliding chute 14 is provided at the top of the suction bucket base 3 corresponding to the sliding block 11 and arranged along the radial direction thereof, and a guide rail 13 arranged along the sliding chute 14 is provided at one end of the sliding chute 14 far from the center of the suction bucket base 3. The slider 11 is mounted in the guide rail 13 so as to be movable back and forth along the guide rail 13.
In this example, a fixing groove 12 of a vertical sliding groove 14 is formed at the end of the guide rail 13 near the center of the suction bucket base 3, and a fixing bolt 20 (see fig. 4) matched with the fixing groove 12 is formed on the sliding block 11. When the sliding block 11 moves to the position of the fixed groove 12 and the fixed bolt 20 is inserted into the fixed groove 12, the position of the sliding block 11 is locked and cannot move continuously along the guide rail 13.
In this embodiment, a containing groove adapted to the sleeve is formed in the center of the top surface of the suction bucket foundation 3 and at the upper end of the insertion hole.
When the suction bucket foundation 3 is transported, the sleeve and the hinged support structure are retracted into the suction bucket foundation 3, so that the occupied space of the structure is greatly reduced, and the transportation is convenient. The sleeve is arranged in a containing groove in the suction bucket foundation 3, the reinforcing support rod 10 is not connected with the main support rod 9, the reinforcing support rod 10 is arranged in the sliding groove 14 after rotating around the four hinges 18, the sliding block 11 is positioned at the central end, far away from the suction bucket foundation 3, of the guide rail 13, and the main support rod 9 is arranged in the sliding groove 14.
After the suction bucket foundation 3 is transported to a designated position, the hinged support structure is unfolded, the sliding block 11 moves towards the center of the suction bucket foundation 3 and is fixed in the fixing groove 12 through the fixing bolt 20, the sleeve rises, and the reinforcing support rod 10 rotates around the fourth hinge 18 and is connected with the main support rod 9 through the third hinge 17.
In this example, the suction bucket foundation is provided with a lifting ring 19 on its upper surface to facilitate transport and lifting of the foundation. The outer edge of the upper part of the suction bucket-shaped foundation is provided with a fist anti-impact plate 6 to reduce seawater scouring, a support rib plate 7 is arranged between the anti-impact plate 6 and the side wall of the suction bucket foundation 3, the contact area of the bucket body and a soil body is enlarged, and the bearing capacity of a foundation structure is improved.
In the embodiment, when the hinged support structure is in an unfolded state, the large-diameter single pile 1 is sequentially and coaxially inserted into the central insertion holes of the sleeve and the suction bucket foundation 3, and is in contact with the reinforcing keys 4 in the sleeve and the insertion holes, a plurality of grouting holes 21 are formed in the large-diameter single pile 1, and the grouting holes 21 are arranged corresponding to the positions between two adjacent reinforcing keys 4 on the sleeve and the insertion holes. The sleeve and the large-diameter single pile 1 are connected into a whole through grout injected from the grout injection hole 21; the insertion hole of the suction bucket foundation 3 and the large-diameter monopile 1 are connected into a whole through grout injected through the grout injection hole 21.
Fig. 5 is a schematic diagram of an installation process of the embodiment, the installation process includes five processes of hoisting and positioning the suction bucket foundation 3, sinking and penetrating the suction bucket, positioning a single pile, driving the single pile, and installing the pile bucket foundation, and the specific processes are as follows:
1) the large-diameter single pile 1 and the suction bucket foundation 3 are hoisted to a specified construction position, the fixing bolt 20 is inserted into the fixing groove 12 after the hinged support structure is unfolded, grouting is carried out in the fixing groove 12, so that the sliding block 11, the fixing bolt 20 and the fixing groove 12 are in strong connection, and then the suction bucket foundation 3 is prepared to sink.
2) The suction bucket foundation 3 is made to penetrate into the seabed under the dead weight, and after the dead weight is stably penetrated, the three cabins enter negative pressure for vacuumizing, seawater in the three cabins is pumped out, negative pressure penetration is completed, the negative pressure water pumping hole 5 is sealed, and the stability of the suction bucket foundation 3 is ensured.
3) And slowly drawing the large-diameter single pile 1 to pass through the sleeve and the insertion hole until the bottom end of the suction bucket foundation 3 contacts the seabed to prepare for single pile driving.
4) And (5) carrying out a piling process to drive the monopile to a specified depth.
5) Grouting is carried out between the sleeve and the large-diameter single pile 1 and between the insertion hole and the large-diameter single pile 1 through the grouting hole 21, the whole structure is cemented, and the installation of the pile-barrel type foundation is completed.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an articulated stake bucket combined type basis of supporting connection of offshore wind turbine which characterized in that: comprises a large-diameter single pile (1), a suction bucket foundation (3) and a hinged support structure;
the center of the suction bucket foundation (3) is provided with a vertically through insertion hole, and the inner wall of the insertion hole is provided with a plurality of circles of reinforcing keys (4);
a sleeve which is concentric and coaxial with the insertion hole is arranged above the suction bucket foundation (3), a plurality of circles of reinforcing keys (4) are arranged on the inner wall of the sleeve, and the sleeve is connected with the suction bucket foundation (3) through a hinged support structure which can be retracted and lifted;
the large-diameter single pile (1) is sequentially coaxially inserted into the central insertion holes of the sleeve and the suction bucket foundation (3), and is in contact with the sleeve and the reinforcing keys (4) in the insertion holes, a plurality of grouting holes (21) are formed in the large-diameter single pile (1), and the grouting holes (21) are arranged corresponding to the sleeve and the insertion holes and between two adjacent reinforcing keys (4);
the sleeve is connected with the large-diameter single pile (1) through grout injected through a grouting hole (21); the insertion hole of the suction bucket foundation (3) is connected with the large-diameter single pile (1) through grout injected through the grouting hole (21).
2. The offshore wind turbine articulated support connected pile-bucket composite foundation of claim 1, wherein: the hinged support structure is provided with a plurality of main support rods (9), one ends of the main support rods (9) are connected with the casing pipes through hinges I (15), the other ends of the main support rods (9) are connected with sliding blocks (11) through hinges II (16), and the sliding blocks (11) are arranged at the top of the suction bucket foundation (3) and can move along the radial direction of the suction bucket foundation (3);
a chute (14) which is radially arranged along the suction barrel base (3) is arranged at the top of the suction barrel base (3) corresponding to the sliding block (11), and one end of the chute (14) far away from the center of the suction barrel base (3) is a guide rail (13) matched with the sliding block (11);
the sliding block (11) is provided with a fixed bolt (20), and the middle part of the sliding groove (14) is provided with a fixed groove (12) matched with the fixed bolt (20).
3. The offshore wind turbine articulated support connected pile-bucket composite foundation of claim 2, wherein: the middle part of the main supporting rod (9) is connected with one end of the reinforcing supporting rod (10) through a third hinge (17), and the other end of the reinforcing supporting rod (10) is connected with the suction bucket foundation (3) through a fourth hinge (18).
4. The offshore wind turbine articulated strut connected pile and bucket composite foundation of claim 1, 2 or 3, wherein: the center of the top surface of the suction bucket foundation (3) is provided with a containing groove matched with the sleeve.
5. The offshore wind turbine articulated support connected pile-bucket composite foundation of claim 1, wherein: the suction bucket foundation (3) upper portion edge system has round impingement baffle (6), links to each other through a plurality of evenly distributed's support floor (7) between impingement baffle (6) and suction bucket foundation (3) lateral wall.
6. The offshore wind turbine articulated support connected pile-bucket composite foundation of claim 1, wherein: the suction bucket foundation (3) is internally divided into a plurality of cabin bodies through a plurality of cabin dividing plates (22), and reinforcing plates (8) are arranged among the cabin dividing plates (22).
7. The offshore wind turbine articulated support connected pile-bucket composite foundation of claim 1, wherein: the top surface of the suction bucket foundation (3) is provided with a plurality of lifting rings (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020503047.0U CN213014353U (en) | 2020-04-09 | 2020-04-09 | Pile-bucket combined type foundation connected by offshore wind turbine hinged support |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020503047.0U CN213014353U (en) | 2020-04-09 | 2020-04-09 | Pile-bucket combined type foundation connected by offshore wind turbine hinged support |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305256A (en) * | 2020-04-09 | 2020-06-19 | 中国电建集团华东勘测设计研究院有限公司 | Pile-bucket combined type foundation connected by offshore wind turbine hinged support and installation method thereof |
| CN113982020A (en) * | 2021-11-12 | 2022-01-28 | 南京航空航天大学 | Combined suction anchor with deviation correcting and quick sinking functions and using method thereof |
| CN118087619A (en) * | 2024-04-18 | 2024-05-28 | 山东科技大学 | Ocean foundation scour protection device of arc water conservancy diversion baffle |
-
2020
- 2020-04-09 CN CN202020503047.0U patent/CN213014353U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305256A (en) * | 2020-04-09 | 2020-06-19 | 中国电建集团华东勘测设计研究院有限公司 | Pile-bucket combined type foundation connected by offshore wind turbine hinged support and installation method thereof |
| CN113982020A (en) * | 2021-11-12 | 2022-01-28 | 南京航空航天大学 | Combined suction anchor with deviation correcting and quick sinking functions and using method thereof |
| CN118087619A (en) * | 2024-04-18 | 2024-05-28 | 山东科技大学 | Ocean foundation scour protection device of arc water conservancy diversion baffle |
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