CN210562255U - Offshore wind power cylinder type foundation underwater construction structure - Google Patents
Offshore wind power cylinder type foundation underwater construction structure Download PDFInfo
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- CN210562255U CN210562255U CN201920879793.7U CN201920879793U CN210562255U CN 210562255 U CN210562255 U CN 210562255U CN 201920879793 U CN201920879793 U CN 201920879793U CN 210562255 U CN210562255 U CN 210562255U
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Abstract
The utility model relates to a construction structures is built to marine wind power section of thick bamboo type basis aquatic. The construction structure comprises a concrete transition section and a steel cylinder, wherein the steel cylinder is built on the bank, the steel cylinder forms a sealing structure through a top cover plate at the top, and the top cover plate forms a working platform; a circle of annular steel plate is embedded in advance along the outer wall of the top cover plate, a steel cofferdam pile casing is built on a working platform formed by the top cover plate and welded with the annular steel plate, and a transverse support rod is welded in the steel cofferdam pile casing. The main construction site of the cylindrical foundation is placed in water, so that the optional position of the site is greatly increased, and the dependence on a wharf is reduced. Meanwhile, the foundation is convenient to transport outside after being built, is convenient for split or integral assembly, and reduces the dependence on a special large gantry crane. In addition, the steel plate cofferdam and the connecting rods can be repeatedly used, and the economical efficiency is high. Short construction period and low cost. Has good economical efficiency and is beneficial to popularization and application.
Description
Technical Field
The utility model relates to an offshore wind power equipment, concretely relates to construction structures are built to marine wind power section of thick bamboo type basis aquatic.
Background
Under the environment of global high concern on developing low-carbon economy, wind power generation has huge market potential as a renewable energy source. Although the offshore wind power starts late, the offshore wind power is rapidly developing all over the world in recent years due to the characteristics of stability of sea wind resources and large power generation capacity. And the difficulty and high cost of the construction of the wind turbine foundation are one of the maximum limiting conditions for the construction of the offshore wind farm. Compared with other foundation forms, the cylindrical foundation has great application advantages. The cylindrical foundation is low in manufacturing cost and quick to install, has a huge development prospect, but the foundation is high in requirement on a wharf when being built, and needs a special gantry crane for installation. After the foundation is built, special ships are needed for transporting the foundation to an installation site. The main reasons which are puzzling the quick development of the cylindrical foundation at present are high site requirement, strict equipment requirement, slow construction period and high cost.
The cylindrical foundation is self-significant, and is limited by steel processing industry, terrain and geological conditions in Guangdong areas in particular. The cylindrical foundation is adopted, the self weight of the foundation reaches 7000t, and the height and the width of the foundation reach 40 m. The length of the coastline of a common wharf is within 500m, and the yield of the cylindrical foundation is severely limited. And because the foundation is manufactured and moved and needs the specialized gantry crane, transport after the foundation is made and also needs the special ship, the manufacturing enterprise hardly bears the high expense.
SUMMERY OF THE UTILITY MODEL
For solving the above problem, the utility model provides a construction structures is built to marine wind power shell type basis aquatic, the utility model discloses arrange the aquatic in with the main construction place of shell type basis for place optional position greatly increased has reduced the reliance to the wharf.
The utility model adopts the technical proposal that: the utility model provides an offshore wind power cylindrical foundation underwater construction structure, includes the concrete changeover portion that sets up on cylindrical foundation upper portion and sets up the steel cylinder in cylindrical foundation lower part, its characterized in that: the steel cylinder is built on the shore, a sealing structure is formed by the steel cylinder through a top cover plate at the top, and the top cover plate forms a working platform; the method comprises the following steps of pre-embedding a circle of annular steel plate along the outer wall of the top cover plate, building a steel cofferdam pile casing on a working platform formed by the top cover plate, welding the steel cofferdam pile casing and the annular steel plate, and welding a transverse support rod in the steel cofferdam pile casing.
Preferably, the top elevation of the steel cofferdam pile casing is 0.5-1.0 m higher than the water surface at the maximum wave height.
Preferably, stiffening ribs are distributed in the steel cofferdam pile casing in the circumferential direction.
Preferably, settlement elevation monitoring points are arranged on the periphery of the steel cylinder.
Preferably, the top cover plate is provided with an air charging and discharging port.
The utility model discloses the beneficial effect who gains is: the main construction site of the cylindrical foundation is placed in water, so that the optional position of the site is greatly increased, and the dependence on a wharf is reduced. Meanwhile, the foundation is convenient to transport outside after being built, is convenient for split or integral assembly, and reduces the dependence on a special large gantry crane. In addition, the steel plate cofferdam and the connecting rods can be repeatedly used, and the economical efficiency is high. Short construction period and low cost. Has good economical efficiency and is beneficial to popularization and application.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of FIG. 1;
reference numerals: 11. a steel cylinder; 12. a concrete transition section; 2. an annular steel plate; 3. protecting a steel cofferdam; 4. a transverse support bar; 5. an air charging and discharging port; 6. a stiffening rib.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-2, the present invention relates to an offshore wind power cylindrical foundation underwater construction structure, which comprises a concrete transition section 12 disposed on the upper portion of a cylindrical foundation and a steel cylinder 11 disposed on the lower portion of the cylindrical foundation, wherein the steel cylinder 11 is constructed on the bank, the steel cylinder 11 forms a sealing structure through a top cover plate on the top, and the top cover plate forms a working platform for constructing the concrete transition section 12; a circle of annular steel plate 2 is embedded in advance along the outer wall of the top cover plate, a steel cofferdam pile casing 3 is built on a working platform formed by the top cover plate, the steel cofferdam pile casing 3 is welded with the annular steel plate 2, and a transverse support rod 4 is welded in the steel cofferdam pile casing 3. The top cover plate is provided with an air charging and discharging port 5 for adjusting the state of the steel cylinder 11 in water.
The utility model discloses a steel cylinder 11 of the lower part of compound section of thick bamboo basis is built ashore, and the concrete changeover portion 12 on upper portion is built at aquatic cofferdam, and annular steel sheet 2 is pre-buried between steel cylinder 11 and concrete changeover portion 12, and the steel cofferdam protects a section of thick bamboo 3 and welds on annular steel sheet 2, satisfies certain height and thickness, but reuse, the surface of water is higher than 0.5m ~ 1.0m when the steel cofferdam protects a 3 apical elevation ratio maximum wave height. The horizontal bracing piece 4 of 3 inner wall welding of steel cofferdam pile casing, 3 inner rings of steel cofferdam pile casing are to distributing stiffening rib 6, increase the water pressure resistance ability of cofferdam.
An offshore wind power cylinder type foundation underwater construction method comprises the following steps:
1) during construction, a lower steel cylinder 11 of the cylindrical foundation is prefabricated on the bank, a top cover plate is covered on the lower steel cylinder, and then the lower steel cylinder is placed in water, so that the steel cylinder 11 is ensured to form airtight characteristics, the top cover plate at the top of the steel cylinder 11 forms a working platform, an annular steel plate 2 is welded and reserved around the top cover plate at the top of the steel cylinder 11 and is conveniently welded with a steel cofferdam pile casing 3, and the next process is convenient to construct;
2) the steel cylinder 11 is placed in a tidal flat or shallow water area through sliding or a crane, the tidal flat or shallow water area requires that the steel cylinder 11 can be smoothly transported out when tide rises, and negative pressure is generated through air suction to enable the steel cylinder 11 to sink to a certain extent;
(3) after the steel cylinder 11 is stabilized, welding a steel cofferdam pile casing 3 on the annular steel plate 2, welding a transverse support rod 4 in the steel cofferdam pile casing 3, annularly distributing stiffening ribs 6 in the steel cofferdam pile casing 3, setting the height and the thickness of the steel cofferdam pile casing 3 according to the water depth condition, and setting the steel cofferdam pile casing 3 to be higher than the flood tide water level by more than 0.5m and 1.0 m;
(4) setting settlement elevation monitoring points around the steel cylinder 11, and filling and exhausting air into the steel cylinder 11 through the air filling and exhausting port 5 to adjust the levelness of the working platform according to the construction progress and the geological settlement condition;
(5) after the levelness of the working platform is adjusted, the construction of the concrete transition section 2 at the upper part of the cylindrical foundation is carried out within the range of the protective cylinder 3 of the steel cofferdam;
6) and after the installation is finished, removing the steel cofferdam pile casing 3, and jacking the cylindrical foundation by pressing gas into the bottom of the steel cylinder 11 or matching with external equipment such as a buoyancy tank and the like when the tide rises, and transporting the cylindrical foundation to a specified place by a barge or towing.
The foregoing shows and describes the general principles and principal structural features of the invention. The present invention is not limited by the above-mentioned examples, and the present invention can be modified in various ways without departing from the spirit and scope of the present invention, and these modifications and improvements fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides an offshore wind power cylindrical foundation underwater construction structure, includes the concrete changeover portion that sets up on cylindrical foundation upper portion and sets up the steel cylinder in cylindrical foundation lower part, its characterized in that: the steel cylinder is built on the shore, a sealing structure is formed by the steel cylinder through a top cover plate at the top, and the top cover plate forms a working platform; the method comprises the following steps of pre-embedding a circle of annular steel plate along the outer wall of the top cover plate, building a steel cofferdam pile casing on a working platform formed by the top cover plate, welding the steel cofferdam pile casing and the annular steel plate, and welding a transverse support rod in the steel cofferdam pile casing.
2. The offshore wind tubular foundation underwater construction structure of claim 1, characterized in that: the top elevation of the steel cofferdam pile casing is 0.5-1.0 m higher than the water surface when the maximum wave height is achieved.
3. The offshore wind tubular foundation underwater construction structure of claim 1, characterized in that: and stiffening ribs are distributed in the steel cofferdam pile casing in the circumferential direction.
4. The offshore wind tubular foundation underwater construction structure of claim 1, characterized in that: settlement elevation monitoring points are arranged on the periphery of the steel cylinder.
5. The offshore wind tubular foundation underwater construction structure of claim 1, characterized in that: and the top cover plate is provided with an air charging and discharging port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920879793.7U CN210562255U (en) | 2019-06-12 | 2019-06-12 | Offshore wind power cylinder type foundation underwater construction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920879793.7U CN210562255U (en) | 2019-06-12 | 2019-06-12 | Offshore wind power cylinder type foundation underwater construction structure |
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| Publication Number | Publication Date |
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| CN210562255U true CN210562255U (en) | 2020-05-19 |
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| CN201920879793.7U Active CN210562255U (en) | 2019-06-12 | 2019-06-12 | Offshore wind power cylinder type foundation underwater construction structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110158640A (en) * | 2019-06-12 | 2019-08-23 | 长江勘测规划设计研究有限责任公司 | Constructing structure and construction method are built in offshore wind farm bucket foundation water |
| CN115897479A (en) * | 2022-10-31 | 2023-04-04 | 中交第三航务工程局有限公司江苏分公司 | Novel assembled wharf revetment structure based on cylinder foundation and construction method |
-
2019
- 2019-06-12 CN CN201920879793.7U patent/CN210562255U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110158640A (en) * | 2019-06-12 | 2019-08-23 | 长江勘测规划设计研究有限责任公司 | Constructing structure and construction method are built in offshore wind farm bucket foundation water |
| CN115897479A (en) * | 2022-10-31 | 2023-04-04 | 中交第三航务工程局有限公司江苏分公司 | Novel assembled wharf revetment structure based on cylinder foundation and construction method |
| CN115897479B (en) * | 2022-10-31 | 2023-10-27 | 中交第三航务工程局有限公司江苏分公司 | Novel assembled wharf revetment structure based on barrel type foundation and construction method |
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