CN110258612B - Integral type offshore wind power multi-pile foundation structure system - Google Patents
Integral type offshore wind power multi-pile foundation structure system Download PDFInfo
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- CN110258612B CN110258612B CN201910574568.7A CN201910574568A CN110258612B CN 110258612 B CN110258612 B CN 110258612B CN 201910574568 A CN201910574568 A CN 201910574568A CN 110258612 B CN110258612 B CN 110258612B
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- pile
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- concrete
- pipe
- bearing platform
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- 239000004567 concrete Substances 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 238000010248 power generation Methods 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 15
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Foundations (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses an integrally installed offshore wind power multi-pile foundation structure system, and relates to the field of wind power generation. The system comprises a floating cabin bearing platform, a tubular pile, pegs, concrete and the like. The floating cabin bearing platform is welded and prefabricated by the tower barrel connecting section, the cover plate, the bottom plate, the coaming and the triangular stiffening rib, and the section form of the pipe pile can be hollow steel pipes or steel pipe concrete. After the pipe pile construction is completed, the floating cabin bearing platform and the upper fan can be integrally floated and hauled to the site, and can be quickly assembled with the pipe pile. The system adopts a multi-pile foundation form with better bearing capacity, rigidity and overall stability, the floating cabin bearing platform and the pipe pile can be prefabricated in advance in a factory, the construction is simple and high in efficiency, the whole system can be hauled, the offshore operation difficulty is reduced, and the system has wide engineering application prospect.
Description
Technical Field
The invention relates to the field of wind power generation.
Background
The offshore wind resources in China are rich, compared with the offshore wind power on land, the generated energy of the fan is higher, the operation is more stable, and the land resources are not occupied, so that the offshore wind power is an important development direction of new wind power energy in China in the future.
Along with the continuous promotion of offshore wind power installation power, compared with a single pile foundation, the multi-pile foundation has more advantages in structural rigidity, overall stability and piling construction. At present, reinforced concrete bearing platforms are adopted for bearing platforms of multi-pile foundations, the cast-in-situ volume of concrete is large, construction is inconvenient, and meanwhile, concrete cracking is easy to occur under the fatigue load effect of the concrete bearing platforms and the connection of the concrete bearing platforms and steel pipe piles, so that the bearing capacity and durability of the foundations are unfavorable.
Offshore operation environment is relatively bad near shore, and uncontrollable factors are more. According to the traditional construction method, the upper fan component is required to be decomposed and transported to the site in batches, then foundation construction and fan hoisting are sequentially carried out, the working procedure and difficulty of offshore operation are increased, and the construction progress and quality are affected.
In summary, it is necessary to develop a novel multi-pile foundation structure system which has high bearing capacity, reliable quality, convenient construction and capability of carrying out integral hauling and installation with an upper fan.
Disclosure of Invention
The invention discloses an integrally installed offshore wind power multi-pile foundation structure system, and relates to the field of wind power generation. The system comprises a floating cabin bearing platform, a tubular pile, pegs, concrete and the like. The floating cabin bearing platform is welded and prefabricated by the tower barrel connecting section, the cover plate, the bottom plate, the coaming and the triangular stiffening rib, and the section form of the pipe pile can be hollow steel pipes or steel pipe concrete. The system adopts a multi-pile foundation form with better bearing capacity, rigidity and overall stability, the components of the system can be prefabricated in a factory in advance, are directly assembled on site, are simple in construction and high in efficiency, can be carried out floating haulage and installation of the whole machine with an upper fan, reduce the difficulty of offshore operation, and have wide engineering application prospects.
The technical scheme of the invention is as follows:
the system comprises a floating cabin bearing platform, tubular piles, a tower connecting section, a cover plate, a bottom plate, coamings, triangular stiffening ribs, grouting holes, reserved pile holes, pegs, concrete, pile top cover plates and circumferential reinforcing steel bars.
The floating cabin bearing platform is prefabricated by a tower connecting section, a cover plate, a bottom plate, coamings and triangular stiffening ribs; the tower barrel connecting section adopts a steel pipe section, the side wall of the tower barrel connecting section is welded with the coaming, and the bottom of the tower barrel connecting section is welded with the cover plate; pouring concrete in the tower connecting section; the periphery of the cover plate is welded with the coaming to form an upper cavity; the periphery of the bottom plate is welded with the coaming to form a lower cavity; the height ratio of the upper cavity to the lower cavity is 2:1; and a plurality of triangular stiffening ribs are uniformly arranged in the upper cavity, the triangular stiffening ribs are required to be arranged at the corresponding positions of the tubular piles, and three sides of the triangular stiffening ribs are welded with the tower connecting section, the coaming and the cover plate respectively.
The section of the pipe pile adopts a hollow steel pipe, and concrete can be poured in the hollow steel pipe in advance; pre-welding studs in a certain height range on the side surface of the upper end of the tubular pile; a plurality of layers of circumferential steel bars are uniformly arranged at the upper end of the pipe pile within a certain height range; the top end of the pipe pile is provided with a pile top cover plate, the diameter of the pile top cover plate is larger than that of the pipe pile, and holes are reserved in the pile top cover plate and used for pouring concrete; 4-8 tubular piles can be selected according to the upper load.
Two symmetrical grouting holes are formed in the cover plate and the coaming, so that concrete can be conveniently poured into the cavity from the outside to the lower part for the second time. The bottom plate is provided with reserved pile holes the same as the number of the pipe piles; the pipe pile is assembled with the floating cabin bearing platform through the reserved pile hole, and then concrete is secondarily poured into the cavity at the lower part to complete the assembly.
Compared with the prior art, the invention has the following beneficial effects:
(1) The floating cabin type bearing platform is adopted, so that the bearing capacity is met, the floating cabin type bearing platform is convenient to assemble with the prefabricated pipe pile, and the integral floating hauling with the upper fan can be realized;
(2) The foundation component is prefabricated in a factory in advance, so that the precision quality can be ensured, only a small amount of concrete is required to be cast in situ for the second time on site, the offshore construction process is greatly reduced, and the connection reliability of the floating cabin bearing platform and the tubular pile can be ensured;
(3) The fan can be lifted near shore and installed on the floating cabin bearing platform, and then transported to the site for integral installation, and the construction process is convenient and efficient.
Drawings
FIG. 1 is a schematic view of the overall elevation (section a-a) and floating deck configuration of the present invention;
FIG. 2 is a cross-sectional view b-b and schematic diagram of the cover plate construction of the present invention;
FIG. 3 is a c-c cross-sectional view and a schematic view of the floor construction of the present invention;
FIG. 4 is a d-d cross-sectional view of the present invention;
FIG. 5 is a detail view of the construction of the pile top cover plate of the present invention;
in the figure: 1-floating deck bearing platform, 2-tubular pile, 3-tower connecting section, 4-cover plate, 5-bottom plate, 6-coaming, 7-triangle stiffening rib, 8-grouting hole, 9-reserved pile hole, 10-peg, 11-concrete, 12-pile top cover plate and 13-circumferential reinforcement.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the integral type offshore wind power multi-pile foundation structure system comprises a floating cabin bearing platform (1), a tubular pile (2), a tower barrel connecting section (3), a cover plate (4), a bottom plate (5), a coaming (6), triangular stiffening ribs (7), pegs (10), concrete (11) and circumferential steel bars (13); the floating cabin bearing platform (1) is prefabricated by a tower connecting section (3), a cover plate (4), a bottom plate (5), coamings (6) and triangular stiffening ribs (7); the tower barrel connecting section (3) adopts a steel pipe section, the side wall of the tower barrel connecting section is welded with the coaming (6), and the bottom of the tower barrel connecting section is welded with the cover plate (4); pouring concrete (11) into the tower connecting section (3); the periphery of the cover plate (4) is welded with the coaming (6) to form an upper cavity; the periphery of the bottom plate (5) is welded with the coaming (6) to form a lower cavity; the height ratio of the upper cavity to the lower cavity is 2:1; in the upper cavity, evenly set up multichannel triangle-shaped stiffening rib (7), the trilateral and tower section of thick bamboo linkage segment (3), bounding wall (6) and apron (4) welding of triangle-shaped stiffening rib (7) respectively.
As shown in fig. 2, the triangular stiffening ribs (7) are uniformly arranged around the center of the bearing platform, and the triangular stiffening ribs (7) are required to be arranged at the corresponding positions of the tubular piles (2); two symmetrical grouting holes (8) are arranged on the cover plate (4) and the coaming (6), so that concrete (11) can be conveniently secondarily poured into the cavity from the outside to the lower part.
As shown in fig. 3, the bottom plate (5) is provided with reserved pile holes (9) the same as the number of the pipe piles (2).
As shown in fig. 4, the section of the pipe pile (2) adopts a hollow steel pipe; pre-welding a stud (10) in a certain height range on the side surface of the upper end of the tubular pile (2); the upper end of the tubular pile (2) is uniformly provided with a plurality of layers of circumferential steel bars (13) within a certain height range; 4-8 tubular piles (2) can be selected according to the upper load; the pipe pile (2) is inserted into the floating cabin bearing platform (1) through the reserved pile hole (9), and then concrete (11) is secondarily poured into the lower cavity to complete assembly.
As shown in fig. 5, concrete (11) can be optionally poured in advance in the tubular pile (2), a pile top cover plate (12) is arranged at the top end of the tubular pile (2), the diameter of the pile top cover plate (12) is larger than that of the tubular pile (2), and holes are reserved in the pile top cover plate for pouring the concrete (11).
The invention provides an integral type offshore wind power multi-pile foundation structure system. The system adopts a multi-pile foundation form with better bearing capacity, rigidity and overall stability, the components of the system can be prefabricated in a factory in advance, are directly assembled on site, are simple in construction and high in efficiency, can be carried out floating haulage and installation of the whole machine with an upper fan, reduce the difficulty of offshore operation, and have wide engineering application prospects.
The above is only a preferred embodiment of the present invention, but the present invention is not limited to the above-described specific embodiment. Modifications, additions, or substitutions are possible, without departing from the scope of the invention as disclosed in the accompanying claims.
Although used more herein: the method comprises the following steps of 1-floating deck bearing platform, 2-tubular piles, 3-tower connecting sections, 4-cover plates, 5-bottom plates, 6-coamings, 7-triangular stiffening ribs, 8-grouting holes, 9-reserved pile holes, 10-pegs, 11-concrete, 12-pile top cover plates, 13-circumferential steel bars and the like, but the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the nature of the invention and should be construed in a manner consistent with their spirit and scope.
Claims (2)
1. An integrally installed offshore wind power multi-pile foundation structure system relates to the field of wind power generation; the system comprises a floating cabin bearing platform (1), a tubular pile (2), a peg (10), concrete (11) and circumferential steel bars (13);
the floating cabin bearing platform (1) is prefabricated by a tower connecting section (3), a cover plate (4), a bottom plate (5), coamings (6) and triangular stiffening ribs (7); the tower barrel connecting section (3) adopts a steel pipe section, the side wall of the tower barrel connecting section is welded with the coaming (6), and the bottom of the tower barrel connecting section is welded with the cover plate (4); the inside of the steel pipe of the tower barrel connecting section (3) contains concrete;
the periphery of the cover plate (4) is welded with the coaming (6) to form an upper cavity; the periphery of the bottom plate (5) is welded with the coaming (6) to form a lower cavity; the height ratio of the upper cavity to the lower cavity is 2:1; in the upper cavity, triangular stiffening ribs (7) are arranged at positions corresponding to the tubular piles (2), and three sides of the triangular stiffening ribs (7) are welded with the tower connecting section (3), the coaming (6) and the cover plate (4) respectively;
the bottom plate (5) is provided with reserved pile holes (9) the same as the number of the pipe piles (2); the pipe pile (2) is assembled with the floating cabin bearing platform (1) through a reserved pile hole (9), and then concrete (11) is secondarily poured into the lower cavity to complete the assembly; two symmetrical grouting holes (8) are arranged on the cover plate (4) and the coaming (6), so that concrete (11) can be conveniently and uniformly poured into the lower cavity from the outside.
2. The integrally installed offshore wind power multi-pile foundation structure system of claim 1, wherein: the section of the pipe pile (2) adopts a hollow steel pipe, and concrete (11) is poured in the hollow steel pipe in advance; pre-welding a stud (10) in a certain height range on the side surface of the upper end of the tubular pile (2); the upper end of the tubular pile (2) is uniformly provided with a plurality of layers of circumferential steel bars (13) within a certain height range; a pile top cover plate (12) is arranged at the top end of the pipe pile (2), the diameter of the pile top cover plate (12) is larger than that of the pipe pile (2), and holes are reserved in the pile top cover plate and used for pouring concrete (11); 4-8 tubular piles (2) are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910574568.7A CN110258612B (en) | 2019-06-28 | 2019-06-28 | Integral type offshore wind power multi-pile foundation structure system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910574568.7A CN110258612B (en) | 2019-06-28 | 2019-06-28 | Integral type offshore wind power multi-pile foundation structure system |
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| Publication Number | Publication Date |
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| CN110258612A CN110258612A (en) | 2019-09-20 |
| CN110258612B true CN110258612B (en) | 2024-03-22 |
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| CN201910574568.7A Active CN110258612B (en) | 2019-06-28 | 2019-06-28 | Integral type offshore wind power multi-pile foundation structure system |
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| CN113833005B (en) * | 2021-08-24 | 2023-03-24 | 哈尔滨工业大学 | Steel-solid waste concrete combined bearing platform with composite structure and construction method thereof |
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