CN117022541A - Floating type offshore wind farm tension leg platform anchoring foundation - Google Patents
Floating type offshore wind farm tension leg platform anchoring foundation Download PDFInfo
- Publication number
- CN117022541A CN117022541A CN202311073952.1A CN202311073952A CN117022541A CN 117022541 A CN117022541 A CN 117022541A CN 202311073952 A CN202311073952 A CN 202311073952A CN 117022541 A CN117022541 A CN 117022541A
- Authority
- CN
- China
- Prior art keywords
- explosion
- pile
- platform
- wind farm
- offshore wind
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004873 anchoring Methods 0.000 title claims abstract description 23
- 238000007667 floating Methods 0.000 title claims abstract description 18
- 238000004880 explosion Methods 0.000 claims abstract description 74
- 239000002360 explosive Substances 0.000 claims description 13
- 229910001208 Crucible steel Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 7
- 239000011083 cement mortar Substances 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 7
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 210000002435 tendon Anatomy 0.000 description 4
- 238000004064 recycling Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
- B63B21/502—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers by means of tension legs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/446—Floating structures carrying electric power plants for converting wind energy into electric energy
Abstract
The invention relates to a floating type anchoring foundation for a tension leg platform of an offshore wind farm, which comprises a bearing platform, tension legs, an explosion pile and a pile foundation; the bearing platform is connected with the explosion pile and the tension leg. Compared with the prior art, the invention has the advantages of reducing construction difficulty, improving the robustness of the integral structure when the single pile foundation fails, simplifying construction flow and required equipment, reducing cost and the like.
Description
Technical Field
The invention relates to the technical field of offshore wind power generation, in particular to a floating type offshore wind farm tension leg platform anchoring foundation.
Background
The traditional ocean platform is mostly fixed, dead weight and cost increase greatly along with the increase of water depth, and the deep sea ocean platform such as a semi-submersible platform, a TLP platform and a Spar platform which are mature exist, but in practical application, the Spar platform has poor pitching and rolling performance which is concerned about a floating fan, the wind power tower can be excessively inclined, the semi-submersible platform uses a larger waterline area to provide the required stability of the floating fan unit, and the influence of sea waves on the structure can be increased due to the overlarge waterline area under the severe working environment of sea conditions. Thus, the TLP platform has considerable cost and performance advantages in deep sea applications. The TLP structure mainly relies on an anchor foundation to resist the larger vertical load to which the structure is subjected, and the anchor structure is usually in three forms including pile foundation, gravity foundation and suction anchor foundation. Because the pretension of the TLP structure plus the gravity force is equal to the buoyancy force to which it is subjected, the pretension eventually acts on the anchoring system, so that the anchor lines are always kept in a tensioned state under tension, and therefore, in the anchoring system, the design choice of the anchoring foundation is particularly important.
Patent CN202310197184.4 discloses a steel-concrete combined tension leg floating type fan foundation, which consists of a central upright post, a foundation hexagonal ring, a box beam, tension tendons and an anchoring foundation; the middle upright post is a steel-concrete combined cavity upright post consisting of an inner cylindrical steel pipe, an outer cylindrical steel pipe and concrete; the foundation hexagonal ring is formed by connecting six sections of double-steel-plate concrete structures end to end, and the box beam also adopts the double-steel-plate concrete structure; the double-steel-plate concrete structure is a cavity structure consisting of an inner steel plate, an outer steel plate and concrete, wherein the inner steel plate is sleeved inside the outer steel plate, and the concrete is filled between the inner steel plate and the outer steel plate; the middle vertical column is arranged in the middle of the basic hexagonal ring and is connected with the basic hexagonal ring into a whole through the box beam; the top of the middle upright post is connected with a fan tower cylinder through a flange; one end of the tension tendon is connected with the corner area of the hexagonal ring of the foundation, and the other end of the tension tendon is connected with the anchoring foundation and is tensioned; the tension tendons are uniformly distributed with 6, and the anchoring foundations are correspondingly provided with 6, but the patent still has the problems of higher manufacturing cost and low robustness.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the anchoring foundation for the tension leg platform of the offshore wind farm, which can provide good anchoring performance, provide good working conditions for the platform, and is convenient to construct and low in cost.
The aim of the invention can be achieved by the following technical scheme:
a floating type anchoring foundation for a tension leg platform of an offshore wind farm comprises a bearing platform, tension legs, explosion piles and pile foundations; the pile cap is connected with the explosion pile and the tension leg, and the tension leg is connected with the pile foundation through the pile cap.
Further, the bearing platform is provided with a plurality of fixing holes matched with the tension legs, and the tension legs penetrate through the holes and are fixed on the bearing platform.
Further, the material of cushion cap be the concrete, be equipped with a plurality of explosion stake locating holes on the cushion cap.
Further, the pile head and the tip of the explosion pile are provided with explosive, the explosive of the pile head is wrapped by an explosion sleeve, cement mortar is arranged in the pile body, and a soft metal strip is arranged on the outer side of the pile head.
Further, a heat-resistant and pressure-resistant pad is paved between the explosion sleeve and the pile head of the explosion pile, so that the explosion sleeve is prevented from being damaged under the explosion impact, the recycling rate of the explosion sleeve is improved, and the cost is reduced.
Furthermore, the pile head of the explosion pile is made of cast steel, and is locally reinforced to cope with explosion impact.
Further, the explosion pile adopts an explosion mode to drive the explosion pile in the middle into the seabed, then the explosion pile is symmetrically driven into the seabed in pairs, the explosive at the tip of the explosion pile is detonated after the explosion pile is driven into the seabed bearing layer, and cement mortar in the explosion pile body enters a cavity formed by explosion to form an expansion head.
Further, the driving sequence of the explosion pile is as follows:
s1: driving an explosion pile positioned in the center of the bearing platform, wherein the counterforce generated by explosion in the process is completely resisted by the ballast;
s2: driving an explosion pile positioned at the opposite angle of the bearing platform, wherein the reaction force generated by explosion in the process is resisted by the ballast and the positioned central explosion pile;
s3: and driving the rest explosion piles.
Furthermore, the five explosive piles are in one group, four prestress anchor cables are anchored, the system robustness can be improved through the design of one group of the plurality of piles, and the system survivability after the single pile fails can be improved; meanwhile, the pile body is shorter than a single pile by adopting a multi-pile design, and pile sinking construction is more convenient.
Further, the soft metal strips generate plastic deformation on the explosion piles to fix the explosion piles, so that the bearing platform and the explosion piles work cooperatively.
Compared with the prior art, the invention has the following advantages:
(1) The structure combines the structural form of the TLP deep sea oil platform, adopts the pile foundation form, the tension legs are connected with the pile foundations through the bearing platforms, each bearing platform is connected with one tension leg and four pile foundations, compared with the scheme that the pile foundations are directly connected with the tension legs, the pile foundations corresponding to the single tension legs are increased, the diameter and the length of the pile foundations can be reduced, the construction difficulty is reduced, and the robustness of the integral structure when the single pile foundations fail is improved.
(2) The pile foundation adopts the form of explosion driving, greatly simplifies the construction flow and required equipment, and has the advantages of high recycling rate of construction materials and quite cost.
Drawings
FIG. 1 is a schematic view of a structure using an explosion pile and a pile cap according to an embodiment of the present invention;
FIG. 2 is a top view of a table for positioning according to an embodiment of the present invention;
the figure indicates:
the concrete pile comprises 1-cement mortar, 2-cast steel pile heads, 3-explosive, 4-explosion sleeves, 5-heat-resistant and pressure-resistant pads, 6-bearing platforms, 7-preset anchor cable fixing points, 8-soft metal strips, 9-explosion pile points and 10-anchor cable fixing points.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples.
Example 1
As shown in fig. 2, with the pile cap 6 connecting the tension leg and the explosion pile, in this embodiment, the pile cap 6 is made of concrete, the explosion pile positioning holes are reserved at four corners and the center, and the tension leg fixing holes are provided at the midpoints of the four corners.
As shown in fig. 1, the cast steel pile head 2 is made of cast steel, and the explosive is detonated in the cast steel pile head, so that the explosive needs to be locally reinforced to cope with the explosion impact, meanwhile, a soft metal strip 8 is arranged on the outer side of the pile head, when the explosion pile is in place, after the cast steel pile head 2 enters the wedge-shaped part of the bearing platform 6, the soft metal strip 8 generates plastic deformation to fix the explosion pile and the bearing platform.
The cast steel pile head 2 is wrapped by a reusable explosion sleeve 4, ballast is piled on the explosion sleeve 4 to provide counter force to resist the explosion force when the explosive 3 is detonated, in order to reduce the weight of a ballast part, a central explosion pile is driven firstly, counter force generated by explosion in the process is completely resisted by the ballast, then two opposite-angle explosion piles are driven, counter force generated by explosion in the process is resisted by the ballast and the in-place central explosion pile, and finally a rest pair of explosion piles are driven to complete all pile sinking operations;
a heat-resistant and pressure-resistant pad 5 is paved between the explosion sleeve and the cast steel pile head 2 to prevent the explosion sleeve 4 from being damaged under the explosion impact so as to improve the recycling rate;
explosive 3 is also arranged at the tip of the explosion pile, and is detonated for the second time after the pile is driven into a bearing layer, and cement mortar 1 in the pile body enters a cavity formed by explosion to form an enlarged head.
The load of the platform is transferred to the foundation through the pile foundation, the load is transferred in various modes, the tension legs can be directly connected with the pile foundation or can be connected with the pile foundation through the foundation disc, the design of a plurality of piles can improve the robustness of the system, and the survivability of the system after a single pile fails is improved; meanwhile, the pile body is shorter than a single pile by adopting a multi-pile design, so that pile sinking construction is more convenient; finally, pile sinking is carried out in batches in a mode of firstly centering and then diagonal, and the reaction force of the post-driven pile can be counteracted by the pile driven firstly, so that the weight and the quality are reduced, the cost is reduced, and the construction difficulty is reduced.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the description of the present invention, it should be understood that the terms "upper," "lower," "vertical," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the present invention, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the present invention.
The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, and yet fall within the scope of the invention.
Claims (10)
1. The floating type offshore wind farm tension leg platform anchoring foundation is characterized by comprising a bearing platform, tension legs, explosion piles and pile foundations; the bearing platform is connected with the explosion pile and the tension leg.
2. The anchoring foundation of a tension leg platform of a floating offshore wind farm according to claim 1, wherein the platform is provided with a plurality of fixing holes matched with the tension legs, and the tension legs pass through the fixing holes to be fixed on the platform.
3. The anchoring foundation of the tension leg platform of the floating offshore wind farm according to claim 1, wherein the bearing platform is made of concrete, a plurality of explosion pile positioning holes are formed in the bearing platform, and the explosion pile positioning holes are formed in the center and the opposite corners of the bearing platform.
4. The anchoring foundation of the tension leg platform of the floating offshore wind farm according to claim 1, wherein the pile head and the tip of the explosion pile are provided with explosive, the explosive of the pile head is wrapped by an explosion sleeve, cement mortar is arranged in the pile body, and soft metal strips are arranged outside the pile head.
5. The anchoring foundation for the tension leg platform of the floating offshore wind farm according to claim 4, wherein a heat-resistant and pressure-resistant pad is paved between the explosion sleeve and the pile head of the explosion pile.
6. The anchoring foundation for a tension leg platform of a floating offshore wind farm according to claim 4, wherein the pile head of the explosion pile is cast steel.
7. The anchoring foundation of the tension leg platform of the floating offshore wind farm according to claim 4, wherein the explosion piles are driven into the seabed in an explosion mode, the explosion piles are symmetrically driven into the seabed in pairs, the explosive at the tip of the explosion piles is detonated after the explosion piles are driven into a seabed bearing layer, and cement mortar in the explosion pile body enters into a cavity formed by explosion to form an expansion head.
8. The floating offshore wind farm tension leg platform anchoring foundation of claim 7, wherein the sequence of pile driving is as follows:
s1: driving an explosion pile positioned in the center of the bearing platform;
s2: driving an explosion pile positioned at the opposite angle of the bearing platform;
s3: and driving the rest explosion piles.
9. The anchoring foundation for the tension leg platform of the floating offshore wind farm according to claim 1, wherein the explosive piles are five in one group, and four prestressed anchor cables are anchored.
10. The anchoring foundation of a tension leg platform of a floating offshore wind farm according to claim 4, wherein the soft metal strips are plastically deformed in the pile to fix the pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311073952.1A CN117022541A (en) | 2023-08-24 | 2023-08-24 | Floating type offshore wind farm tension leg platform anchoring foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311073952.1A CN117022541A (en) | 2023-08-24 | 2023-08-24 | Floating type offshore wind farm tension leg platform anchoring foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117022541A true CN117022541A (en) | 2023-11-10 |
Family
ID=88637221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311073952.1A Pending CN117022541A (en) | 2023-08-24 | 2023-08-24 | Floating type offshore wind farm tension leg platform anchoring foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117022541A (en) |
-
2023
- 2023-08-24 CN CN202311073952.1A patent/CN117022541A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11352098B2 (en) | Method of assembling a floating wind turbine platform | |
| CN109026551B (en) | Novel floating type wind turbine foundation platform based on tuned liquid column oscillation damper | |
| CN108248783B (en) | construction method of offshore wind power submersible floating foundation | |
| CN113653601B (en) | Semi-submersible floating type fan device and system | |
| CN102162256A (en) | Maritime foundation base | |
| CN103255752B (en) | Support the buoyant support fixed platform of offshore wind turbine, marine works | |
| CN113846665B (en) | Combined type offshore wind turbine foundation suitable for deepwater conditions and installation method thereof | |
| CN114855865B (en) | Tensioning type fan foundation anchored on rock-based seabed and arrangement method | |
| CN112628096A (en) | Cold sea water pipe operation system based on thermoelectric energy power generation | |
| CN113619742B (en) | Hybrid floating offshore wind turbine platform and design and construction method of composite material side column thereof | |
| CN217870596U (en) | Tensioning type fan foundation anchored on foundation seabed | |
| CN117022541A (en) | Floating type offshore wind farm tension leg platform anchoring foundation | |
| KR20240042434A (en) | floating wind turbine platform | |
| CN112554224B (en) | Main and auxiliary combined pile foundation capable of being used in offshore wind turbine and construction method | |
| CN220470118U (en) | Novel marine floating type hybrid power generation platform | |
| JP3242173U (en) | Reinforcing device for single pile foundation | |
| CN114348193B (en) | Self-generating deep-sea movable ocean platform system and construction method thereof | |
| CN214424644U (en) | Cold sea water pipe operation system based on thermoelectric energy power generation | |
| CN219412802U (en) | Marine floating type fan foundation | |
| US20240084537A1 (en) | Portal frame platform and construction method for large offshore wind turbines | |
| CN108316335B (en) | Tensioning mooring submerged floating foundation and construction method thereof | |
| CN117231430A (en) | Offshore wind power generation tower foundation | |
| WO2023158319A1 (en) | A windmill construction and a method for assembly of a windmill construction | |
| CN114954820A (en) | Annular-connected four-column type offshore floating type fan platform | |
| CN114348195A (en) | Self-power-generation offshore movable guyed tower type damping platform system and construction method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |