CN101545462B - A steel-concrete combined weight type offshore wind fan foundation structure - Google Patents
A steel-concrete combined weight type offshore wind fan foundation structure Download PDFInfo
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- CN101545462B CN101545462B CN2009101365825A CN200910136582A CN101545462B CN 101545462 B CN101545462 B CN 101545462B CN 2009101365825 A CN2009101365825 A CN 2009101365825A CN 200910136582 A CN200910136582 A CN 200910136582A CN 101545462 B CN101545462 B CN 101545462B
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- 239000004567 concrete Substances 0.000 title claims abstract description 47
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 104
- 239000010959 steel Substances 0.000 claims abstract description 104
- 230000005484 gravity Effects 0.000 claims abstract description 33
- 239000002131 composite material Substances 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims 6
- 238000010276 construction Methods 0.000 abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 28
- 238000009991 scouring Methods 0.000 abstract 1
- 239000011150 reinforced concrete Substances 0.000 description 38
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 28
- 238000000034 method Methods 0.000 description 13
- 230000005684 electric field Effects 0.000 description 10
- 239000011440 grout Substances 0.000 description 9
- 239000003653 coastal water Substances 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
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Abstract
一种钢-混凝土组合重力式海上风电机组基础结构，涉及海上风电机组的基础结构，钢管立柱顶端设有钢承台，钢管立柱下端的外表面均匀的设有若干型钢混凝土筋板，型钢混凝土筋板的外端固定在多边形的型钢混凝土基座的内表面，型钢混凝土基座的底面以中心为原点，均匀地设有沿径向的若干肋板，相邻的两肋板的外端设有裙边，肋板的高度与裙边相同，型钢混凝土基座的底面上设有若干灌浆孔和锚杆孔。本发明，结构合理，增大重力式海上风电机组基础结构的适用水深，拓展重力式海上风电机组基础结构的适用海底条件，使其适用软基海底和冲刷海底，降低了10～30m水深近海的海上风电机组基础结构的成本，与桩基础结构相比，其海上施工难度小、施工周期短。
A foundation structure of a steel-concrete combined gravity type offshore wind turbine, which relates to the foundation structure of an offshore wind turbine. A steel cap is provided at the top of a steel pipe column, and a number of steel-concrete bars and steel-concrete bars are evenly provided on the outer surface of the lower end of the steel tube column. The outer end of the plate is fixed on the inner surface of the polygonal shaped steel concrete base, and the bottom surface of the shaped steel concrete base takes the center as the origin, and several ribs along the radial direction are evenly provided, and the outer ends of the adjacent two ribs are provided with The height of the skirt is the same as that of the skirt, and a number of grouting holes and anchor holes are arranged on the bottom surface of the steel concrete base. The invention has a reasonable structure, increases the applicable water depth of the basic structure of the gravity type offshore wind turbine, expands the applicable seabed conditions of the basic structure of the gravity type offshore wind turbine, makes it suitable for soft foundation seabed and scouring the seabed, and reduces the water depth of 10-30m near the sea Compared with the pile foundation structure, the cost of the foundation structure of offshore wind turbines is less difficult and the construction period is shorter.
Description
Technical field
The present invention relates to the fondational structure of offshore wind farm unit, a kind of specifically steel-concrete combined weight type offshore wind fan foundation structure.
Background technique
Offshore wind farm unit fondational structure is the key structure that marine wind electric field is built, its cost determination marine wind electric field can realize generating electricity by way of merging two or more grid systems, become the alternative energy source of traditional energy.
At present, offshore wind farm unit fondational structure mainly contains gravity structure, single pile structure, tripod structure, jacket structure and floating structure.Wherein, the maximum water depth that gravity structure is suitable for is 10m, and the suitable depth of water of single pile structure is 10～30m, and the suitable depth of water of tripod structure is 30～40m, and the suitable depth of water of jacket structure is 40～50m, and the suitable depth of water of floating structure then is more than the 50m.Its cost also increases with structural type and two factors of the depth of water, as: under the same depth of water condition, the cost of single pile structure is greater than gravity structure, and the cost of tripod structure is greater than the single pile structure, the cost of jacket structure is greater than tripod structure, and the cost of floating structure is greater than jacket structure.
The cost of offshore wind farm unit fondational structure is the bottleneck of restriction marine wind electric field development, it accounts for 14～16% of marine wind electric field gross investment, and the cost of land wind energy turbine set fondational structure only accounts for 3～5%, this shows, reducing offshore wind farm unit fondational structure cost is extremely important, to a certain extent, determined the development of offshore wind farm cause.Therefore, developing cheaply, offshore wind farm unit fondational structure is the most important thing of offshore wind farm industry.Both at home and abroad all dropped into great amount of manpower and carried out relevant research work with material resources, European then developing focus is placed on the research of concrete gravity formula fondational structure because the cost of concrete structure is lower than steel structure, emphasis is a method of construction.
At present, marine wind electric field both domestic and external is all built the marine site of the following depth of water of 20m in, and the suitable depth of water of concrete gravity formula structure is 10m to the maximum.Its reason is that the column and the cushion cap of concrete gravity formula structure is heavier, and along with the increase of the depth of water, the height of column and cushion cap increases, thereby center of gravity improves, and stability of structure is reduced.In addition, therefore the inapplicable soft basic seabed of traditional gravity structure and wash away the seabed, makes the application of gravity structure be subjected to great restriction.At present, the marine wind electric field of the following depth of water of 20m adopts the single pile structure more, makes the cost of investment of marine wind electric field high.
The single pile structure adopts hydraulic pile hammer with steel pipe pile injection seabed, and the upper end is exposed the sea and adjusted the perpendicularity of stake with pile cover, and is connected with pylon.Pile cover adopts grouting to be connected with stake.It mainly is because the steel column length change in its suitable depth of water scope only be the increase of ocean environment load to the influence of fondational structure that the single pile structure can be used the bigger depth of water (comparing with gravity structure), and the unstability of structure itself does not have very big variation.And the increase of environmental load can solve by the embedded depth that increases stake, and conventional concrete gravity structure is can't be obtained just for this.
The construction cost of single pile structure is than concrete gravity formula structure height, long, required construction equipment complexity of marine guidance piling engineering time, thereby construction cost is also higher, the grouting process of pile cover is complicated, has also increased the cost of single pile structure.But, be still the main structure form of shallow sea marine wind electric field at present because of its good scour resistance.
As seen by above-mentioned, there is following shortcoming in prior art:
1, the suitable depth of water scope of concrete gravity formula structure is little;
2, concrete gravity formula structure only is suitable for the hard seabed, and inapplicable soft basic seabed and wash away the seabed;
3, the steel structure cost height of coastal waters offshore wind farm fondational structure;
4, the construction difficulty of single pile structure is big, long in time limit.
Summary of the invention
At the defective that exists in the prior art, the object of the present invention is to provide a kind of steel-concrete combined weight type offshore wind fan foundation structure, rational in infrastructure, increase the suitable depth of water of weight type offshore wind fan foundation structure, expand the suitable sub sea conditions of weight type offshore wind fan foundation structure, make its suitable soft basic seabed and wash away the seabed, reduced the cost of the offshore wind farm unit fondational structure in 10～30m depth of water coastal waters, compare little, the short construction period of its offshore construction difficulty with pile foundation structure.
For reaching above purpose, the technological scheme that the present invention takes is:
A kind of steel-concrete combined weight type offshore wind fan foundation structure, comprise steel pipe post 1, steel pipe post 1 top is provided with steel cushion cap 2, it is characterized in that: the outer surface of steel pipe post 1 lower end is provided with some steel reinforced concrete gussets 3 uniformly, the outer end of steel reinforced concrete gusset 3 is fixed on the internal surface of polygonal steel reinforced concrete pedestal 4, the bottom surface of steel reinforced concrete pedestal 4 is initial point with the center, be provided with some floors 5 radially equably, the outer end of two adjacent floors 5 is provided with shirt rim 6, the height of floor 5 is identical with shirt rim 6, and the bottom surface of steel reinforced concrete pedestal 4 is provided with some grout holes 7 and bolthole 8.
On the basis of technique scheme, the bottom surface of the bottom surface of steel reinforced concrete gusset 3 and steel reinforced concrete pedestal 4 maintains an equal level, the end face of steel reinforced concrete gusset 3 is the inclined-plane, and with the end face of steel pipe post 1 joint on earth identity distance from maximum, with the end face of steel reinforced concrete pedestal 4 joints on earth identity distance from minimum.
On the basis of technique scheme, the shaped steel skeleton and the steel pipe post 1 of steel reinforced concrete gusset 3 are welded to connect, and the shaped steel skeleton of steel reinforced concrete gusset 3 and the shaped steel skeleton of steel reinforced concrete pedestal 4 are welded to connect.
On the basis of technique scheme, the bottom surface of the steel reinforced concrete pedestal 4 that two adjacent floors are 5 is provided with a grout hole 7 and bolthole 8, and near shirt rim 6, grout hole 7 is than the bottom center of bolthole 8 near steel reinforced concrete pedestal 4 than grout hole 7 for bolthole 8.
Steel-concrete combined weight type offshore wind fan foundation structure of the present invention, rational in infrastructure, increase the suitable depth of water of weight type offshore wind fan foundation structure, expand the suitable sub sea conditions of weight type offshore wind fan foundation structure, make its suitable soft basic seabed and wash away the seabed, reduced the cost of the offshore wind farm unit fondational structure in 10～30m depth of water coastal waters, compared, little, the short construction period of its offshore construction difficulty with pile foundation structure.
Description of drawings
The present invention has following accompanying drawing:
The structural representation of Fig. 1 steel-concrete combined weight type offshore wind fan foundation structure
Fig. 2 steel reinforced concrete pedestal 4 look up structural representation
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
As Fig. 1, shown in 2, steel-concrete combined weight type offshore wind fan foundation structure of the present invention, comprise steel pipe post 1, steel pipe post 1 top is provided with steel cushion cap 2, the outer surface of steel pipe post 1 lower end is provided with some steel reinforced concrete gussets 3 uniformly, the outer end of steel reinforced concrete gusset 3 is fixed on the internal surface of polygonal steel reinforced concrete pedestal 4, the bottom surface of steel reinforced concrete pedestal 4 is initial point with the center, be provided with some floors 5 radially equably, the outer end of two adjacent floors 5 is provided with shirt rim 6, the height of floor 5 is identical with shirt rim 6, and the bottom surface of steel reinforced concrete pedestal 4 is provided with some grout holes 7 and bolthole 8.
On the basis of technique scheme, the bottom surface of the bottom surface of steel reinforced concrete gusset 3 and steel reinforced concrete pedestal 4 maintains an equal level, the end face of steel reinforced concrete gusset 3 is the inclined-plane, and with the end face of steel pipe post 1 joint on earth identity distance from maximum, with the end face of steel reinforced concrete pedestal 4 joints on earth identity distance from minimum.
On the basis of technique scheme, the shaped steel skeleton and the steel pipe post 1 of steel reinforced concrete gusset 3 are welded to connect, and the shaped steel skeleton of steel reinforced concrete gusset 3 and the shaped steel skeleton of steel reinforced concrete pedestal 4 are welded to connect.
On the basis of technique scheme, the bottom surface of the steel reinforced concrete pedestal 4 that two adjacent floors are 5 is provided with a grout hole 7 and bolthole 8, and near shirt rim 6, grout hole 7 is than the bottom center of bolthole 8 near steel reinforced concrete pedestal 4 than grout hole 7 for bolthole 8.
Technological scheme of the present invention adopts steel pipe post to add the steel suspended deck structure as the linkage section of basis with wind-driven generator tower frame as mentioned above, and the concrete column that has substituted existing gravity structure adds the structure of concrete bearing platform; Adopt the pedestal of reinforced concrete composite structure to substitute reinforced concrete plinth, to increase the whole anti-bending strength of pedestal, for soft basic seabed, can adopt anchor rod anchored method to increase the resistance to capsizing of structure, make the suitable depth of water of structure extend to 30m by 10m; Simultaneously, protection against erosion and antiskid structure that floor and skirtboard are formed, the suitable sub sea conditions that makes structure is expanded to soft basic seabed and is washed away sub sea conditions by the hard sub sea conditions of traditional gravity structure.It is to be convenient to being connected of pedestal and steel pipe post that the present invention adopts the reason of reinforced concrete composite structure pedestal, reduces the difficulty of construction of pedestal.Pedestal adopts with being connected of column and is welded to connect, specifically---the shaped steel skeleton of the shaped steel skeleton of steel reinforced concrete gusset and steel pipe post, steel reinforced concrete gusset and the shaped steel skeleton of steel reinforced concrete pedestal all adopt and are welded to connect, thereby make steel pipe post, steel reinforced concrete pedestal and steel reinforced concrete gusset form whole steel frame construction.Steel cushion cap and steel pipe post adopt and are welded to connect, and leave flange hole on the steel cushion cap, so that be connected with the generator pylon.The steel reinforced concrete pedestal is provided with bolthole and grout hole, increases the resistance to capsizing of pedestal and the bearing capacity in soft basic seabed by corresponding construction process.
Principle of the present invention can be summarized as follows:
1, since the weight of steel structure well below the concrete structure weight of equality strength, therefore, steel pipe post of the present invention adds the steel suspended deck structure and can solve owing to the depth of water increases the concrete gravity formula fondational structure center of gravity cause and raise, the shortcoming that structure stability reduces, thus the suitable depth of water of gravity type foundation structure increased.It is 10m that the maximum of tradition gravity structure is suitable for the depth of water, and the suitable depth of water of maximum of the present invention is 30m.
2, the present invention is increased to 30m with the suitable depth of water of gravity type foundation structure, and the existing solution of this depth of water is single pile structure or tripod structure.These two kinds of structures are the pile foundation steel structure, and not only construction cost height, and construction difficulty is big, long construction period.And the construction cost of technological scheme of the present invention is low, construction technology is simple, short construction period, therefore, the present invention substitutes the pile foundation steel structure of this depth of water with gravity structure, greatly reduce construction cost, difficulty of construction and the construction period of offshore wind farm unit fondational structure, thereby reduced the construction cost of marine wind electric field.Gravity type foundation structure construction technology difficulty of the present invention is little, by gravity and negative pressure method structure is kept flat to the seabed, and the perpendicularity of steel pipe post can be adjusted by the negative pressure method, and the technical difficulty of grouting and anchor bolt construction is little, therefore, short construction period, construction cost is low.
3, the present invention can adopt pedestal protection against erosion structure (floor adds shirt rim, grouting and anchor pole), the sub sea conditions that gravity structure is suitable for is expanded to soft basic seabed by original hard seabed and is washed away sub sea conditions, make the marine site of original only suitable pile foundation steel structure can adopt gravity structure, thereby greatly reduce the construction cost of marine wind electric field.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101365825A CN101545462B (en) | 2009-05-08 | 2009-05-08 | A steel-concrete combined weight type offshore wind fan foundation structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101365825A CN101545462B (en) | 2009-05-08 | 2009-05-08 | A steel-concrete combined weight type offshore wind fan foundation structure |
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| CN101545462A CN101545462A (en) | 2009-09-30 |
| CN101545462B true CN101545462B (en) | 2011-07-20 |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338046A (en) * | 2010-07-15 | 2012-02-01 | 陈文渊 | Offshore wind power generation device and base thereof |
| CN102878028A (en) * | 2012-09-26 | 2013-01-16 | 广东明阳风电产业集团有限公司 | Fishplate connection structure between wind turbine tower and foundation |
| CN105201008B (en) * | 2015-07-22 | 2020-04-03 | 清华大学 | Pin-type bending-resistant longitudinal connection node and its construction method |
| CN109914460A (en) * | 2019-02-27 | 2019-06-21 | 重庆大学 | A new type of suction cylinder-type combined structure wind power foundation suitable for shallow sea |
| CN110106909B (en) * | 2019-06-13 | 2024-03-12 | 中交上海港湾工程设计研究院有限公司 | Anchor rod gravity type offshore wind power foundation and construction method thereof |
| CN110397061A (en) * | 2019-07-15 | 2019-11-01 | 河北工业大学 | A circular platform auxiliary reinforced monopile foundation for offshore wind turbines and its construction method |
| CN111021389A (en) * | 2019-12-17 | 2020-04-17 | 中国人民解放军陆军工程大学 | Antiskid rigid-flexible combined foundation plate structure |
| CN111622257A (en) * | 2020-06-29 | 2020-09-04 | 华电重工股份有限公司 | Gravity type cylindrical foundation |
| GB2604909A (en) | 2021-03-18 | 2022-09-21 | Subsea 7 Ltd | Subsea foundations |
| CN113029054B (en) * | 2021-04-09 | 2022-10-25 | 中国海洋大学 | Device and monitoring method for real-time monitoring of pile foundation scour depth |
| CN113700614A (en) * | 2021-09-16 | 2021-11-26 | 华能(浙江)能源开发有限公司清洁能源分公司 | Gravity type foundation for offshore wind power |
| CN114517489A (en) * | 2022-01-18 | 2022-05-20 | 天津大学 | Offshore wind power barrel type foundation structure with pile pier |
| JP7492283B1 (en) | 2022-11-24 | 2024-05-29 | 株式会社四国Ｇａ | Method for constructing bottom-fixed offshore mounting system, bottom-fixed offshore mounting system, and offshore wind power generation device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1867769A (en) * | 2003-10-17 | 2006-11-22 | 爱罗丁工程有限公司 | Foundation for an offshore wind energy plant |
| CN101169108A (en) * | 2006-10-25 | 2008-04-30 | 天津市海恩海洋工程技术服务有限公司 | Oversea wind power generation tower structure and its mounting method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1867769A (en) * | 2003-10-17 | 2006-11-22 | 爱罗丁工程有限公司 | Foundation for an offshore wind energy plant |
| CN101169108A (en) * | 2006-10-25 | 2008-04-30 | 天津市海恩海洋工程技术服务有限公司 | Oversea wind power generation tower structure and its mounting method |
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