CN209603168U - A kind of offshore wind farm combination foundation - Google Patents

A kind of offshore wind farm combination foundation Download PDF

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Publication number
CN209603168U
CN209603168U CN201822187713.XU CN201822187713U CN209603168U CN 209603168 U CN209603168 U CN 209603168U CN 201822187713 U CN201822187713 U CN 201822187713U CN 209603168 U CN209603168 U CN 209603168U
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China
Prior art keywords
jacket
suction tube
wind farm
offshore wind
cable
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CN201822187713.XU
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Chinese (zh)
Inventor
邹尤
程卫民
陶铁铃
何杰
曹龙
付文军
刘凯
曾斌
党莹颖
张涛
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Changjiang Institute of Survey Planning Design and Research Co Ltd
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Changjiang Institute of Survey Planning Design and Research Co Ltd
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Abstract

The utility model relates to a kind of offshore wind farm combination foundations.The offshore wind farm combination foundation, including jacket, steel-pipe pile, suction tube and cable.The offshore wind farm combination foundation of the utility model is by jacket, steel-pipe pile, suction tube and cable are constituted, jacket is connected with suction tube by cable, cable can play its high-strength tensile capacity, increase the lateral rigidity of combination foundation, jacket bears vertical load, the horizontal fan load and wave current power that jacket is born pass to suction tube shared by cable, since suction tube disperses in insertion topsoil, it is big with surface layer earth foundation contact area, the horizontal force resistant of ground surface soil can be given full play to, improve the horizontal bearing performance of foundation pile, improve basic resistance to capsizing, reduce the pulling capacity that the main leg of jacket is born, so as to reduce the main leg distance of jacket and bar cross section, reduce basic cost and difficulty of construction.Negative pressure sinking can be used in suction tube, and difficulty of construction is small.

Description

A kind of offshore wind farm combination foundation
Technical field
The present invention relates to offshore wind farm blower foundation technical fields, more particularly, to a kind of offshore wind farm combination foundation.
Background technique
Rational exploitation and utilization wind energy has become the strategic fulcrum of worldwide energy revolution, and European offshore wind farm has become its energy The important component of source supply, Chinese offshore wind farm is nowadays just in large-scale development, and gradually to offshore distance, the depth of water is big Sea area development, innovation and creation go out to be suitble to the fan foundation structure of 30~50m depth of water as the weight of domestic offshore wind farm development at present In it is weight.Since fan loads are big, marine environment is complicated, how to accomplish that fan foundation structure is safe, economical, applicable and have become industry One of the problem of being inside primarily upon.
Offshore wind farm fan foundation structure pattern is varied, including single-pile foundation, tripod basis, high pile foundation, leads Pipe support basis, gravity type foundation, suction tube basis and floatation type basis etc..As domestic offshore wind farm is gradually to offshore distance The sea area development long, the depth of water is big, the depth of water have reached 40m or more, and single-pile foundation, high pile foundation, gravity type foundation pattern are no longer It is applicable in.The truss-like basis that jacket basis is made of main leg and diagonal brace, lateral rigidity is big, is suitable for the biggish sea of the depth of water Domain, from the point of view of current case history, in coastal areas such as Fujian, Guangdong by typhoon influence, single-machine capacity is also being continuously increased, The fan loads and wave load that jacket basis is born also become larger therewith, if using conventional jacket foundation pattern, it is main Leg and diagonal brace bar cross section can be very big, and distance and steel-pipe pile can be very long between main leg, and the wave force that basis is born can increase with it, Both increase basic cost and construction period in this way or is unfavorable for production, transport and installation.
Summary of the invention
In order to solve the above problem, the present invention provides the novel sea of a kind of jacket, steel-pipe pile, suction tube and cable composition Upper wind-powered electricity generation combination foundation.
The technical solution adopted by the present invention is that: a kind of offshore wind farm combination foundation, it is characterised in that: including jacket, inhale Power cylinder and cable, it is characterised in that: setting changeover portion is fixedly connected with blower fan tower barrel bottom at the top of the jacket, described to lead Pipe support bottom is fixedly connected with the steel-pipe pile in embedment seabed;Multiple suction are evenly distributed on circumference centered on blower fan tower barrel Cylinder, multiple suction tubes sink to being embedded in topsoil by negative pressure;Each suction tube passes through cable and jacket is solid Fixed connection.
Preferably, the jacket includes the diagonal brace of more main legs and cross weld between more main legs, more institutes It states main leg top to be welded on the girder steel of top, the top girder steel is solid with blower fan tower barrel bottom by way of flange or grouting Fixed to connect, main leg bottom end described in root is fixedly connected with the steel-pipe pile in embedment seabed.
Further, the main leg and diagonal brace are all made of steel-tube construction, and the main leg diameter is 0.8m~4m, the diagonal brace Diameter is 0.3~2.0m.
Further, the more main legs are uniformly distributed centered on blower fan tower barrel, the distance between adjacent described main leg For 10~35m.
Further, the suction tube suction tube equal or described with the quantity of main leg is 2 times of quantity of main leg.
Further, 3~20m of the suction tube diameter, the deep 3~10m of cylinder, upper end closed, open at its lower end, inside are in more Poroid steel cylinder or concrete tube.
Further, the link position of the cable and jacket should be located at the water surface or less at least 3m.
Further, the link position of the cable and jacket is on main leg and diagonal brace pad.
Further, the angle of the cable and horizontal plane is 30 °~60 °.
The beneficial effect that the present invention obtains is: offshore wind farm combination foundation of the invention is by jacket, steel-pipe pile, suction tube It is constituted with cable, jacket is connected with suction tube by cable, and cable can play its high-strength tensile capacity, is increased The lateral rigidity of combination foundation, jacket bear vertical load, and the horizontal fan load and wave current power that jacket is born pass through steel Cable passes to suction tube shared, big with surface layer earth foundation contact area since suction tube disperses in insertion topsoil, can To give full play to the horizontal force resistant of ground surface soil, the horizontal bearing performance of foundation pile is improved, improves basic resistance to capsizing, reduces conduit The pulling capacity that the main leg of frame is born reduces basic cost and construction is difficult so as to reduce the main leg distance of jacket and bar cross section Degree.Negative pressure sinking can be used in suction tube, and difficulty of construction is small.
Detailed description of the invention
Fig. 1-2 is structural schematic diagram of the invention.
Specific embodiment
The present invention will be further explained in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, a kind of offshore wind farm combination foundation of the invention, including jacket, steel-pipe pile 9, suction tube 6 and steel Cable 5, is equipped with top girder steel 2 at the top of jacket, and top girder steel 2 is equipped with changeover portion 1,7 bottom of blower fan tower barrel by ring flange 8 or The form of grouting is fixedly connected with changeover portion 1, realizes the fixed installation of blower and jacket, jacket bottom and embedment seabed Steel-pipe pile 9 is fixedly connected, and steel-pipe pile 9 is fixedly connected with jacket bottom by grout compartment 10, realizes that jacket overall structure exists The fixed installation in seabed.Multiple suction tubes 6 are evenly distributed on circumference centered on blower fan tower barrel 7, multiple suction tubes 6 pass through Negative pressure sinks to being embedded in topsoil, and each suction tube 6 is fixedly connected by cable 5 with jacket.Cable 5 can play it High-strength tensile capacity, increases the lateral rigidity of combination foundation, and jacket bears vertical load, the horizontal fan that jacket is born Load and wave current power pass through cable 5 and pass to 6 shared of suction tube, since suction tube 6 disperses in insertion topsoil, with table Layer earth foundation contact area is big, can give full play to the horizontal force resistant of ground surface soil, improves the horizontal bearing performance of foundation pile, improves base Plinth resistance to capsizing reduces the pulling capacity that the main leg 3 of jacket is born, and cuts so as to reduce main 3 distance of leg of jacket and rod piece Face, while the underground length of steel-pipe pile 9 can also be reduced, reduce basic cost and difficulty of construction.Suction tube 6 can be used under negative pressure Heavy, difficulty of construction is small.
Jacket includes the diagonal brace 4 of more main legs 3 and cross weld between more main legs 3, and Duo Genzhu leg 3 is with blower tower It is uniformly distributed centered on cylinder 7, the distance between adjacent main leg 3 is 10~35m, and 3 top of Duo Genzhu leg is welded on top girder steel 2 On, top girder steel 2 is fixedly connected by way of ring flange 8 or grouting with 7 bottom of blower fan tower barrel, 3 bottom end of Duo Genzhu leg with The steel-pipe pile 9 in embedment seabed is fixedly connected by grout compartment 10.Cross weld is between adjacent main leg 3 two-by-two for diagonal brace 4, diagonal brace 4 Angle with main leg 3 is 30 °~60 °.
In the present embodiment, jacket is used as main supports using four main legs 3, diagonal brace 4 two-by-two cross weld in adjacent main leg 3 Between, main leg 3 and diagonal brace 4 are all made of steel-tube construction, and main 3 diameter of leg is 0.8m~4m, height 55m, in the adjacent main leg 3 of Ni Mianchu The distance between be 20m;Diagonal brace diameter is 0.3~2.0m, and diagonal brace 4 and the angle of main leg 3 are 45 °.
In the present embodiment, suction tube 6 is equal with the quantity of main leg 3, suction tube 3~15m of diameter, the deep 3~10m of cylinder, upper end Closing, open at its lower end, internal steel cylinder or concrete tube in cellular (porous honeycomb), are conducive to the installation of suction tube 6.
In the present embodiment, the link position of cable 5 and jacket should be located at the water surface or less at least 3m, in order to avoid influence ship The link position of berthing, cable 5 and jacket is in main leg 3 and diagonal brace welds on 4 contacts, the clamping of cable 5 and horizontal plane It is 30 °~60 °.
During Specific construction: steel-pipe pile 9 is squeezed into seabed by production steel-pipe pile 9, jacket and suction tube 6 first;By steel 5 one end of cable and jacket weld;Then the prefabricated main leg 3 of jacket is inserted into be in the milk in steel-pipe pile 9 and is connected;Again by suction Cylinder 6 is transported to construction site, welds with 5 other end of cable;Then by 5 negative pressure sinking of suction tube, it is tensioned cable 5;Finally pacify Fill blower fan tower barrel 7.
Basic principle and key structural feature of the invention has been shown and described above.The present invention is not by the limit of examples detailed above System, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements It both falls in the range of claimed invention.The claimed scope of the invention is by appended claims and its equivalent It defines.

Claims (9)

1. a kind of offshore wind farm combination foundation, it is characterised in that: including jacket, steel-pipe pile (9), suction tube (6) and cable (5), setting changeover portion (1) is fixedly connected with blower fan tower barrel (7) bottom at the top of the jacket, the jacket bottom and embedment The steel-pipe pile (9) in seabed is fixedly connected;It is evenly distributed on circumference centered on blower fan tower barrel (7) multiple suction tubes (6), it is more A suction tube (6) is sunk to being embedded in topsoil by negative pressure;Each suction tube (6) passes through cable (5) and conduit Frame is fixedly connected.
2. offshore wind farm combination foundation according to claim 1, it is characterised in that: the jacket includes more main legs (3) and diagonal brace (4) of the cross weld between more main legs (3), more main leg (3) tops are welded on top girder steel (2) on, the top girder steel (2) is fixedly connected by way of ring flange (8) or grouting with blower fan tower barrel (7) bottom, and every Main leg (3) bottom end is fixedly connected with the steel-pipe pile (9) in embedment seabed.
3. offshore wind farm combination foundation according to claim 2, it is characterised in that: the main leg (3) and diagonal brace (4) are adopted With steel-tube construction, main leg (3) diameter is 0.8m~4m, and diagonal brace (4) diameter is 0.3~2.0m.
4. offshore wind farm combination foundation according to claim 2, it is characterised in that: the more main legs (3) are with blower tower It is uniformly distributed centered on cylinder (7), the distance between adjacent described main leg (3) is 10~35m.
5. offshore wind farm combination foundation according to claim 2, it is characterised in that: the suction tube (6) and main leg (3) Quantity is equal or suction tube (6) is 2 times of quantity of main leg (3).
6. according to the described in any item offshore wind farm combination foundations of claim 2~5, it is characterised in that: the suction tube (6) is straight 3~20m of diameter, the deep 3~10m of cylinder, upper end closed, open at its lower end, inside are in cavernous steel cylinder or concrete tube.
7. offshore wind farm combination foundation according to claim 6, it is characterised in that: the cable (5) and jacket Link position should be located at the water surface or less at least 3m.
8. offshore wind farm combination foundation according to claim 7, it is characterised in that: the cable (5) and jacket Link position is on main leg (3) and diagonal brace (4) pad.
9. offshore wind farm combination foundation according to claim 8, it is characterised in that: the cable (5) and horizontal plane Angle is 30 °~60 °.
CN201822187713.XU 2018-12-25 2018-12-25 A kind of offshore wind farm combination foundation Active CN209603168U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201822187713.XU CN209603168U (en) 2018-12-25 2018-12-25 A kind of offshore wind farm combination foundation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201822187713.XU CN209603168U (en) 2018-12-25 2018-12-25 A kind of offshore wind farm combination foundation

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CN209603168U true CN209603168U (en) 2019-11-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113565124A (en) * 2021-08-20 2021-10-29 龙源电力集团股份有限公司 Suction tube type offshore wind power and photovoltaic foundation structure and assembly method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113565124A (en) * 2021-08-20 2021-10-29 龙源电力集团股份有限公司 Suction tube type offshore wind power and photovoltaic foundation structure and assembly method

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