CN210827529U - Single-pile reinforced foundation of offshore wind power anti-icing structure - Google Patents
Single-pile reinforced foundation of offshore wind power anti-icing structure Download PDFInfo
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- CN210827529U CN210827529U CN201921552071.7U CN201921552071U CN210827529U CN 210827529 U CN210827529 U CN 210827529U CN 201921552071 U CN201921552071 U CN 201921552071U CN 210827529 U CN210827529 U CN 210827529U
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Abstract
The offshore wind power anti-icing structure single-pile reinforced foundation comprises a single-pile foundation, an anti-icing cone, a sacrificial anode block, an overhaul platform, a ladder stand and a plurality of compacted sand piles, wherein the bottom of the single-pile foundation is connected with seabed bedrock, and the compacted sand piles are arranged in a soft soil layer above the bedrock; the compaction sand pile takes the single pile foundation as the center and is arranged at intervals to form a compaction sand pile array. The anti-ice cone is installed at the horizontal plane of the single pile foundation. The sacrificial anode block is used for resisting corrosion of the metal part of the pile foundation. The upper end of the ladder stand is connected with the maintenance platform, and the lower end of the ladder stand extends to the horizontal plane. The utility model arranges the compacted sand pile array around the single pile foundation of the wind turbine generator to form a new soil body around the composite foundation reinforced pile, thereby enhancing the stability of the wind turbine generator foundation; the ice cone is resisted, the ice load is reduced, and the wave load borne by the pile body is increased; and the sacrificial anode blocks inhibit the corrosion of the metal of the single pile foundation.
Description
Technical Field
The utility model belongs to wind power basis field, concretely relates to basis is consolidated to anti ice structure single pile of marine wind power.
Background
Over thirteen years, the national support for new energy is continuously strengthened, the concept of green development is more implemented, and a large number of offshore wind and power engineering is also actively carried out. At present, the offshore wind turbine foundation is 80% of single-pile type, along with the increasing power of the wind turbine, the load is also increased, the pile diameter of the single pile is increased, the pile foundation stability is difficult to meet the requirements for the deep and soft soil on the surface and the bedrock geological structure covered below, and great challenges are brought to design and construction.
Disclosure of Invention
The technical problem of the utility model is that along with the increase of offshore wind turbine generator system power and load, the wind turbine generator system pile foundation stability of the single pile type of the ordinary adoption of present marine wind power is difficult to satisfy the requirement.
The utility model aims at solving the above problem, providing the basis is consolidated to marine wind power anti-icing structure single pile, set up a plurality of crowded sand piles in the weak soil around the single pile of wind turbine generator system, form new composite foundation, consolidate the single pile foundation of marine wind turbine generator system.
The technical scheme of the utility model is that the offshore wind power anti-icing structure single pile reinforced foundation comprises a single pile foundation and a plurality of compacted sand piles, wherein the single pile foundation is connected with seabed bedrock, and the compacted sand piles are arranged in a soft soil layer above the bedrock; the compaction sand pile takes the single pile foundation as the center and is arranged at intervals to form a compaction sand pile array.
Preferably, the single pile foundation is a steel pipe pile.
Further, marine wind power anti-icing structure single pile reinforced foundation still includes anti ice awl, and anti ice awl is installed in single pile foundation horizontal plane department.
Furthermore, offshore wind power anti-icing structure single pile reinforced foundation still includes and is used for the anticorrosive sacrificial anode piece of pile foundation metal part, sacrificial anode piece and single pile foundation fixed connection.
Further, the basis is consolidated to anti ice structure mono-pile of offshore wind power is still including setting up the maintenance platform at mono-pile foundation top.
Furthermore, marine wind power anti-icing structure single pile reinforced foundation still includes the cat ladder, and the cat ladder upper end is connected with the maintenance platform, and the lower extreme extends to the horizontal plane.
Preferably, the inner circle of the compacted sand pile array is square, equilateral triangle or parallelogram.
Preferably, the outer ring of the compacted sand pile array is circular.
Preferably, the distance between the squeezed sand pile adjacent to the single pile foundation in the squeezed sand pile array and closest to the single pile foundation and the center of the single pile foundation is 6-10 m.
Preferably, the pitch of the compacted sand piles of the compacted sand pile array is 1.3-3.5 m.
Preferably, the pile diameter of the compacted sand pile is 1.2-2 m.
Preferably, the pile length of the compacted sand pile is 10-60 m.
The utility model has the advantages that:
1) the sand pile array is arranged around the single pile foundation of the wind turbine generator, so that a new soil body around the composite foundation reinforcing pile is formed, and the stability of the wind turbine generator foundation is enhanced;
2) the ice cone is resisted, and the ice load of the pile foundation is reduced;
3) the sacrificial anode blocks inhibit the corrosion of the metal of the single pile foundation;
4) the maintenance platform is convenient for installation, maintenance and repair of the wind turbine generator;
5) the crawling ladder is convenient for wind turbine generator system construction and maintenance personnel to climb onto the top of the single pile foundation from the construction ship.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of a mono pile foundation and an array of compacted sand piles.
Description of reference numerals: the anti-icing pile comprises a single pile foundation 1, a compacted sand pile 2, an anti-icing cone 3, a sacrificial anode block 4, an overhaul platform 5, a ladder stand 6 and a cable pipe 7.
Detailed Description
As shown in fig. 1 and 2, the offshore wind power anti-icing structure single-pile reinforced foundation comprises a steel pipe pile 1, an anti-icing cone 3, a sacrificial anode block 4, an overhaul platform 5, a ladder stand 6 and 376 compacted sand piles 2, wherein the bottom of the steel pipe pile 1 is connected with seabed bedrock, and the compacted sand piles 2 are arranged in a soft soil layer above the bedrock; the compacted sand piles 2 are arranged at intervals by taking the steel pipe pile 1 as the center to form a compacted sand pile array. The ice-resistant cone 3 is arranged at the horizontal plane of the steel pipe pile 1. And the sacrificial anode block 4 is welded with the steel pipe pile 1 and is used for resisting corrosion of a metal part of the pile foundation. The upper end of the ladder stand 6 is connected with the maintenance platform 5, and the lower end extends to the horizontal plane. The cable pipe 7 is fixedly connected with the steel pipe pile 1, and the lower end of the cable pipe penetrates into a soft soil layer to protect a power transmission cable of the wind turbine generator.
As shown in fig. 2, the inner circle of the compacted sand pile array is square, and the outer circle is circular. And the distance between the center of the steel pipe pile 1 and the compacted sand pile 2 which is adjacent to the steel pipe pile 1 and closest to the steel pipe pile 1 in the compacted sand pile array is 9.6 m. The interval of the compacted sand piles 2 of the compacted sand pile array is 3.2 m. The pile diameter of the compacted sand pile 2 is 2 m. The pile length of the compacted sand pile 2 is 14.8 m.
Basis is consolidated to marine wind power anti-icing structure single pile utilizes crowded dense sand pile ship to be under construction, and crowded dense sand pile ship adopts GPS measurement system location, including 2 GPS receiving stations on GPS basic station and the ship, the work progress includes: calculating the pile center coordinate of each compacted sand pile 2, and guiding the pile center coordinate into a GPS (global positioning system) of a compacted sand pile ship; positioning the compaction sand pile ship to the accurate coordinate position of the compaction sand pile 2, sequentially and respectively sinking 3 sand pile sleeves, pressurizing and draining the sand pile sleeves when the sand pile sleeves are close to the mud surface, simultaneously keeping the air pressure in the sand pile sleeves, continuously sinking the sand pile sleeves to the designed bottom elevation, and detecting and squeezing out the mud entering from the end part of the sand pile sleeves in the sinking process; pouring sand into the sand pile casing; setting air pressure in the pipe according to the depth of a soil layer where the sand pile sleeve is located, pressing the sand pile sleeve, keeping sand in the pipe in the soil layer, detecting the elevation of the sand surface in the sand pile sleeve, controlling the speed of the sand pile sleeve, and avoiding soft soil from entering the bottom of the sand pile sleeve due to over-fast pipe drawing; continuously maintaining the pressure in the pipe to back-beat so as to compact, compact and expand the sand columns; circularly performing sand filling, pipe drawing and back driving to form a whole compacted sand pile 2; repeating the process, taking the steel pipe pile 1 of the wind turbine generator as a center, and arranging a plurality of compacted sand piles 2 around the steel pipe pile 1 from inside to outside to form a compacted sand pile array, thereby completing the reinforcement of the steel pipe pile 1.
The compacted sand piles 2 are transported from the banker harbor quay to the site with sand using 2 2000t sand carriers. The pile body material of the sand compaction pile 2 adopts coarse sand or medium sand, the maximum grain diameter is not more than 5mm, and the mud content is not more than 5%.
And (4) carrying out underwater topography measurement by adopting a GPS non-tide method, drawing an underwater topography map and determining the elevation of the mud surface.
The positioning personnel closely observe the pile position deviation displayed by the GPS system and ensure that the pile position deviation is less than 0.2dmm, namely 320mm when the casing is sunk. Meanwhile, in the process of setting up the sand pipe, the verticality of the sand compaction pile 2 is controlled by adjusting the ballast water of the underwater sand compaction pile 2, and the verticality of the sand pipe is strictly controlled within 1.5 percent.
Claims (10)
1. The offshore wind power anti-icing structure single-pile reinforced foundation is characterized by comprising a single-pile foundation (1) and a plurality of compacted sand piles (2), wherein the single-pile foundation (1) is connected with seabed bedrock, and the compacted sand piles (2) are arranged in a soft soil layer above the bedrock; the compacted sand piles (2) are arranged at intervals by taking the single pile foundation (1) as the center to form a compacted sand pile array.
2. Offshore wind power anti-ice structure mono-pile reinforced foundation according to claim 1, characterized by further comprising an anti-ice cone (3), the anti-ice cone (3) being mounted at the mono-pile foundation (1) level.
3. Offshore wind power ice-resistant structural mono-pile reinforced foundation according to claim 1, characterized in that the mono-pile foundation (1) is a steel pipe pile.
4. The offshore wind power anti-icing structure single pile reinforced foundation according to claim 3, further comprising a sacrificial anode block (4) for inhibiting corrosion of the steel pipe pile, wherein the sacrificial anode block (4) is fixedly connected with the single pile foundation (1).
5. Offshore wind power ice-resistant structural mono-pile reinforced foundation according to claim 1, characterized by further comprising an inspection platform (5) arranged on top of the mono-pile foundation (1).
6. An offshore wind power anti-icing structure mono-pile reinforced foundation according to claim 1, characterized in that it further comprises a ladder (6), the upper end of the ladder (6) is connected with the maintenance platform (5), and the lower end extends to the horizontal plane.
7. The offshore wind power anti-ice structure single pile reinforced foundation of claim 1, wherein the inner circle of the compacted sand pile array is square, equilateral triangle or parallelogram.
8. The offshore wind power anti-icing structure single pile reinforced foundation according to claim 1, characterized in that the outer ring of the compacted sand pile array is circular.
9. Mono-pile reinforced foundation according to claim 1, wherein the compacted sand pile (2) in the compacted sand pile array adjacent to the mono-pile foundation (1) and closest to the mono-pile foundation (1) is at a distance of 6-10m from the centre of the mono-pile foundation (1).
10. Mono-pile reinforced foundation according to any one of claims 1-9, wherein the pitch of the sand squeeze piles (2) of the sand squeeze pile array is 1.3-3.5 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921552071.7U CN210827529U (en) | 2019-09-18 | 2019-09-18 | Single-pile reinforced foundation of offshore wind power anti-icing structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921552071.7U CN210827529U (en) | 2019-09-18 | 2019-09-18 | Single-pile reinforced foundation of offshore wind power anti-icing structure |
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| CN210827529U true CN210827529U (en) | 2020-06-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062365A (en) * | 2021-02-09 | 2021-07-02 | 中国能源建设集团广东省电力设计研究院有限公司 | Cage sleeving device |
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2019
- 2019-09-18 CN CN201921552071.7U patent/CN210827529U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062365A (en) * | 2021-02-09 | 2021-07-02 | 中国能源建设集团广东省电力设计研究院有限公司 | Cage sleeving device |
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