CN103225315B - Offshore wind power foundation consisting of single pile, cylindrical foundations and anchor cable - Google Patents
Offshore wind power foundation consisting of single pile, cylindrical foundations and anchor cable Download PDFInfo
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- CN103225315B CN103225315B CN201310174029.7A CN201310174029A CN103225315B CN 103225315 B CN103225315 B CN 103225315B CN 201310174029 A CN201310174029 A CN 201310174029A CN 103225315 B CN103225315 B CN 103225315B
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Abstract
The invention discloses an offshore wind power foundation structure consisting of a single pile, cylindrical foundations and an anchor cable. The offshore wind power foundation structure consists of a single pile, multiple cylindrical foundations and an anchor cable, wherein the cylindrical foundations are uniformly distributed on the circumference which takes the single pile as the center of a circle; the anchor cable is obliquely tensioned and is connected with the cylindrical foundations and the single pile; the anchor cable, the cylindrical foundations and the single pile are connected through welding; the included angle between the anchor cable and the single pile is between 30 and 60 degrees; and the top of the single pile is connected with a wind turbine tower through a flange plate. According to the technical scheme, a novel foundation type consisting of the single pile, the cylindrical foundations and the anchor cable is given, the anchor cable is connected with the cylindrical foundations and the single pile and is obliquely tensioned, the resistance of shallow soil on the earth surface is fully exerted, the bending moment resistance of the structure is enhanced, and the displacement of the pile body is reduced, so that the aim of reducing the diameter and thickness of the single pile is fulfilled.
Description
Technical field
The invention belongs to offshore wind power foundation technical field, more particularly, relate to a kind of novel offshore wind farm crew base pattern combined by anchor cable with single pile by multiple cylindrical foundation.
Background technology
Wind energy has been subject to the favor of various countries energy development person as green clean reproducible energy, and in the construction of at sea wind energy turbine set, foundation structure is the most important thing.Maritime environment is complicated and changeable, and the safety of foundation structure, economy and compliance restrict the key factor that offshore wind farm develops.
Offshore wind power foundation structural shape is varied, comprises many pile leaders frame, single pile, tripod basis, gravity type foundation, cylindrical foundation and floatation type basis etc.Current employing the most widely foundation pattern is single-pile foundation.Single-pile foundation is made up of single large diameter steel pipe usually, and bottom is goed deep into, in soil, providing bearing capacity; Middle part is dipped in water long-term ringings such as bearing wave ocean current tide; Top is connected with blower fan tower barrel by linkage section.Single-pile foundation mainly bears the horizontal loads such as stormy waves stream, needs emphasis to consider its horizontal bearing performance in the design.Due to its integral rigidity relatively little (more soft), pile body displacement is often comparatively large, and structural dynamic response under wave, wind action is comparatively large, easily produces fatigue damage and even loses efficacy.Along with the exploitation of offshore wind farm scale, Wind turbine single-machine capacity is increasing, and the unit that 5MW is even larger has been researched and developed successfully all, and as adopted single pile pattern, the diameter of stake and wall thickness will significantly increase, and both add cost, and too increase difficulty of construction.
Summary of the invention
The object of the invention is intended to overcome the problems referred to above, and propose a kind of offshore wind power foundation pattern be made up of single pile, cylindrical foundation and anchor cable, this foundation structure can effectively solve the problem, and difficulty of construction is low simultaneously, the cycle is short, good in economic efficiency.
Technical purpose of the present invention is achieved by following technical proposals:
A kind of offshore wind power foundation structure be made up of single pile, cylindrical foundation and anchor cable, be made up of single pile, cylindrical foundation and anchor cable, wherein said cylindrical foundation be evenly distributed on single pile be the center of circle circumferentially, the oblique tension of described anchor cable connects cylindrical foundation and single pile, angle between described anchor cable and single pile is at 30 ~ 60 °, and described single pile top is connected with wind turbine tower cylinder by flange.
Described anchor cable be connected by welding between cylindrical foundation, single pile.
Described single pile is steel pipe pile, diameter 2-10m, long 40-80m.
Described anchor cable is cable.
Described cylindrical foundation is the steel cylinder being provided with top pressure closure, and is arranged among sea bed, and its selectable number is selected and arranged 3 ~ 12, preferably 6 ~ 10, cylindrical foundation diameter 1.5-8m.
Angle between described anchor cable and single pile preferably 40 ~ 50 °.
Technical solution of the present invention gives the novel foundation pattern be made up of single pile, cylindrical foundation and anchor cable, anchor cable connects cylindrical foundation and single pile, oblique tension, give full play to the drag of shallow surface soil, strengthen the ability of structure resist torque, reduce pile body displacement, thus arrive the object reducing single pile diameter and thickness.The axial load of foundation structure is born by single pile; The horizontal loading that the environmental loads such as wind, current, ripple produce is connected shared with multiple cylindrical foundation by anchor cable by single pile with moment of flexure, because cylindrical foundation is distributed on ground radially, larger with the contact range of ground, the horizontal resist forces 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 dynamic response of foundation pile under dynamic loading.And cylindrical foundation can adopt negative pressure to sink, difficulty of construction is little.
Accompanying drawing explanation
Fig. 1 is the offshore wind power foundation structure drawing in side sectional elevation be made up of single pile, cylindrical foundation and anchor cable of the present invention.
Fig. 2 is the offshore wind power foundation structure top view be made up of single pile, cylindrical foundation and anchor cable of the present invention.
Wherein 1 is single pile; 2 is cylindrical foundation; 3 is cable; 4 is flange; 5 is wind turbine tower cylinder.
Detailed description of the invention
Technical scheme of the present invention is further illustrated below in conjunction with specific embodiment.
As shown in figure 1 and 2, a kind of offshore wind power foundation structure be made up of single pile, cylindrical foundation and anchor cable, comprises single steel pipe pile, connects anchor cable, cylindrical foundation, flange and wind turbine tower cylinder.
Connection anchor cable is cable, and cylindrical foundation is the steel cylinder being provided with top pressure closure of steel, establishes 8 altogether, radial be uniformly distributed in single pile be the center of circle circumferentially, single pile top is connected by flange with blower fan structure.Single pile diameter 4.5m, long 80m; Cylindrical foundation diameter 2m.To be connected with single pile by cable and cylindrical foundation is welded to connect, cable is identical with cylindrical foundation number, and the angle between anchor cable and single pile is between 30 ~ 60 °.
Described cylindrical foundation is arranged among sea bed, and its quantity, except 8, also can be selected to arrange 3 ~ 12, preferably 6 ~ 10, be uniformly distributed in single pile be the center of circle circumferentially, cylindrical foundation diameter select 1.5-8m.Described single pile is steel pipe pile, and diameter selects 2-10m, and length selects 40-80m.Angle between described anchor cable and single pile preferably 40 ~ 50 °.
In Specific construction process: first prefabricated single pile and cylindrical foundation; Then pass through to certain depth by first heavy for prefabricated single pile; Again by cylindrical foundation transportation by driving to assigned address, install cable; Then by cylindrical foundation negative pressure sinking, tensioned cables; Finally blower fan tower barrel is installed.
Above to invention has been exemplary description; should be noted that; when not departing from core of the present invention, any simple distortion, amendment or other those skilled in the art can not spend the equivalent replacement of creative work all to fall into protection scope of the present invention.
Claims (5)
1. the offshore wind power foundation structure be made up of single pile, cylindrical foundation and anchor cable, it is characterized in that, be made up of single pile, cylindrical foundation and anchor cable, wherein said cylindrical foundation be evenly distributed on single pile be the center of circle circumferentially, the oblique tension of described anchor cable connects cylindrical foundation and single pile, angle between described anchor cable and single pile is at 30 ~ 60 °, and described single pile top is connected with wind turbine tower cylinder by flange; Described single pile is diameter 2-10m, the steel pipe pile of long 40-80m; Described anchor cable is cable; Described cylindrical foundation is the steel cylinder being provided with top pressure closure, and is arranged among sea bed, described cylindrical foundation diameter 1.5-8m, and quantity is selected to arrange 3 ~ 12.
2. a kind of offshore wind power foundation structure be made up of single pile, cylindrical foundation and anchor cable according to claim 1, is characterized in that, described anchor cable be connected by welding between cylindrical foundation, single pile.
3. a kind of offshore wind power foundation structure be made up of single pile, cylindrical foundation and anchor cable according to claim 1, is characterized in that, the angle between described anchor cable and single pile preferably 40 ~ 50 °.
4. a kind of offshore wind power foundation structure be made up of single pile, cylindrical foundation and anchor cable according to claim 1, is characterized in that, described cylindrical foundation quantity is selected to arrange 6 ~ 10, cylindrical foundation diameter 2m.
5. a kind of offshore wind power foundation structure be made up of single pile, cylindrical foundation and anchor cable according to claim 1, it is characterized in that, described single pile is the steel pipe pile of diameter 4.5m, long 80m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310174029.7A CN103225315B (en) | 2013-05-11 | 2013-05-11 | Offshore wind power foundation consisting of single pile, cylindrical foundations and anchor cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310174029.7A CN103225315B (en) | 2013-05-11 | 2013-05-11 | Offshore wind power foundation consisting of single pile, cylindrical foundations and anchor cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103225315A CN103225315A (en) | 2013-07-31 |
| CN103225315B true CN103225315B (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310174029.7A Active CN103225315B (en) | 2013-05-11 | 2013-05-11 | Offshore wind power foundation consisting of single pile, cylindrical foundations and anchor cable |
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Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953059B (en) * | 2014-05-04 | 2016-04-27 | 中国能源建设集团云南省电力设计院有限公司 | Guy rope anchoring type offshore wind turbine foundation |
| CN103938647A (en) * | 2014-05-14 | 2014-07-23 | 闵怡红 | Wind power generation tower prestress anchor bolt cage |
| CN104060625B (en) * | 2014-06-11 | 2016-02-10 | 河海大学 | The offshore wind power foundation of the stake of a kind of steel pole vertical connecting and taper pile |
| CN107794957B (en) * | 2017-11-24 | 2023-06-20 | 中交上海港湾工程设计研究院有限公司 | Super-large-diameter single pile foundation horizontal static load device and test method |
| CN107989028B (en) * | 2017-12-01 | 2023-08-01 | 徐少钢 | Portable mechanical combined overground fixed pile device |
| CN108677994B (en) * | 2018-07-20 | 2024-06-25 | 上海交通大学 | Offshore wind turbine single pile foundation with tensioning type anchoring system |
| CN108677991B (en) * | 2018-07-26 | 2023-09-26 | 山东大学 | Suction type combined foundation structure suitable for stratum easy to liquefy and construction method |
| CN109853609A (en) * | 2018-12-25 | 2019-06-07 | 长江勘测规划设计研究有限责任公司 | A kind of offshore wind farm combination foundation |
| CN112982468A (en) * | 2019-12-18 | 2021-06-18 | 烟台三维岩土工程技术有限公司 | Anchoring technology and construction method for marine large-diameter tubular pile foundation |
| CN112075370A (en) * | 2020-09-10 | 2020-12-15 | 上海交通大学 | Integrated development device of single-pile offshore wind turbine and circumferentially displaceable aquaculture net cage |
| CN114763698A (en) * | 2021-01-15 | 2022-07-19 | 中国电建集团华东勘测设计研究院有限公司 | Pre-tensioned pile anchor combined foundation for shallow covering layer seabed and construction method thereof |
| CN112982472B (en) * | 2021-02-26 | 2022-09-27 | 中国能源建设集团江苏省电力设计院有限公司 | Power transmission tower foundation structure suitable for regions without bedrock and construction method |
| CN114197512B (en) * | 2021-12-01 | 2023-07-14 | 中国长江三峡集团有限公司 | Offshore wind power composite double-pile foundation suitable for shallow covered soil layer and construction method thereof |
| CN114182751A (en) * | 2021-12-09 | 2022-03-15 | 天津大学 | Offshore wind power deepwater pile-anchor flexible composite foundation |
| CN114525820A (en) * | 2022-03-10 | 2022-05-24 | 中国长江三峡集团有限公司 | Offshore single-pile prestress adjusting device and control method thereof |
| CN115110591B (en) * | 2022-07-04 | 2023-04-21 | 江苏科技大学 | Device and method for reinforcing and rectifying offshore wind power single pile foundation |
| CN115217144B (en) * | 2022-07-06 | 2023-12-26 | 江苏天能海洋重工有限公司 | Multi-functional stable offshore wind power generation foundation pile |
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| CN101886400A (en) * | 2010-07-01 | 2010-11-17 | 江苏新誉重工科技有限公司 | Foundation of wind generating set |
| JP2011184870A (en) * | 2010-03-05 | 2011-09-22 | Mikio Umeoka | Anchor pile for coupling sign and the like |
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| WO2000046452A9 (en) * | 1999-02-05 | 2001-05-17 | Northern Technologies Inc | Support structure for elevating and supporting monopoles and associated equipment |
| CN101768978A (en) * | 2010-01-29 | 2010-07-07 | 天津大学 | At-sea wind generation unit foundation formed by barrel type foundation and mooring rope anchor |
| JP2011184870A (en) * | 2010-03-05 | 2011-09-22 | Mikio Umeoka | Anchor pile for coupling sign and the like |
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| CN103225315A (en) | 2013-07-31 |
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