CN102995655A - Cylindrical structure and pile group combined type offshore wind turbine foundation - Google Patents
Cylindrical structure and pile group combined type offshore wind turbine foundation Download PDFInfo
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- CN102995655A CN102995655A CN2012105477075A CN201210547707A CN102995655A CN 102995655 A CN102995655 A CN 102995655A CN 2012105477075 A CN2012105477075 A CN 2012105477075A CN 201210547707 A CN201210547707 A CN 201210547707A CN 102995655 A CN102995655 A CN 102995655A
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Abstract
The invention discloses a cylindrical structure and pile group combined type offshore wind turbine foundation, comprising a cylindrical steel wall and a concrete top cover arranged at the top of the cylindrical steel wall, wherein a plurality of radially-arranged pre-stress beams, a plurality of connection beams and a pre-stress connection section are cast on the concrete top cover; the pre-stress connection section is vertically arranged at the center of the concrete top cover; the pre-stress beams are uniformly arranged around the rim of the pre-stress connection section along the circumference of the pre-stress connection section; the connection beam is arranged between each two pre-stress beams; a guide pipe is pre-embedded at the middle part of each connection beam; steel pipe piles infiltrated into the foundation are arranged inside the guide pipes; and the steel pipe piles and the guide pipes are poured with high-strength mortar. The cylindrical structure and pile group combined type offshore wind turbine foundation provided by the invention not only has the advantages of strong horizontal force resistance and vertical force resistance of a cylindrical foundation, but also has the advantage of good foundation liquefaction of a pile foundation. Meanwhile, with the adoption of the structure, the onshore scale prefabrication and the offshore floating transportation of a cylindrical structure can be realized; and the offshore construction time and the construction difficulty can be reduced. Therefore, the wind turbine foundation has very high economical benefits.
Description
Technical field
The present invention relates to the offshore wind power foundation pattern, is in traditional single pile, many pile foundations development out, a kind of novel marine windmill Toft foundation structure pattern that compound cylindrical structure is combined with a clump of piles.
Background technology
Global energy day is becoming tight now, and wind energy has been subject to various countries energy development person's favor as green clean reproducible energy.The whole world can be developed the wind energy total amount and is about 20,000,000,000 kW according to statistics, is ten times that water power can be developed total amount.Wind Power Development is swift and violent in recent years, and its market every year is all increasing with 40% speed, expects the year two thousand twenty, and world's wind-powered electricity generation total installation of generating capacity will reach 12.6 hundred million kW, account for 12% of world's aggregate demand.Have than landlocked offshore wind farm that distinguished and admirable attitude is good, not land occupation, annual utilization hours advantages of higher.With regard to China, the coastal waters wind energy resources is estimated to reach 7.5 hundred million kW, is 3 times of land wind energy resources, and the offshore wind farm exploitation certainly will become the emphasis of Future in China power exploi-tation.
Because maritime environment is complicated, and the wind energy conversion system foundation mainly bears huge moment load, causes the complicated and expenditure of construction of the structural stress state of marine windmill foundation to remain high.At present, the marine windmill foundation mainly contains three kinds of patterns, and is as follows respectively: single-pile foundation, many pile foundations and gravity type foundation.Common are High-Rise Pile Cap Foundation, tripod basis etc. in many pile foundations.In recent years, University Of Tianjin has proposed a kind of novel marine windmill Toft foundation structure, is referred to as compound bucket foundation, and has successfully built model machine in marine site, Qidong, Jiangsu, and operation conditions is good.
Along with the progress of wind energy conversion system manufacturing technology, the marine windmill capacity is increasing.What application was maximum at present is single-pile foundation, increases with capacity, and the diameter of single pile is increasing, and 3MW wind energy conversion system single-pile foundation stake diameter has arrived 4.5m, even larger.The increase of stake diameter is all had higher requirement for marine guidance piling equipment and offshore construction.High-Rise Pile Cap Foundation has at China's Donghai Bridge marine wind electric field and uses, but the long offshore construction duration that its marine concreting brings overcomes without effective way at present.The long construction period will raise the expense of offshore construction, and the construction period that increases whole engineering.The tripod basis belongs to a kind of of jacket basis, and expenditure of construction is all higher usually.Gravity type foundation is built on the batholith usually, and is high to the requirement for bearing capacity of ground, so its scope of application is less.Compound bucket foundation is stronger to the applicability of soft foundation.Because it belongs to the shallow foundation type, in low earthquake intensity area territory, the type basis is more applicable, but in the high earthquake intensity zone, earthquake liquefaction may bring impact to its safety.
Summary of the invention
The present invention provides a kind of cylindrical structure and clump of piles combined type marine windmill foundation for solving the technical problem that exists in the known technology.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is: a kind of cylindrical structure and clump of piles combined wind machine foundation, comprise cartridge type steel wall and the concrete top cover that is arranged on its top, build a plurality of along its prestressed girder that radially arranges on the described concrete top cover, a plurality of contact beams and prestressing force linkage section, described prestressing force linkage section is vertically set on the center of described concrete top cover, a plurality of described prestressed girders circumferentially are distributed on its periphery along described prestressing force linkage section, between two adjacent described prestressed girders, be equipped with described contact beam, the middle part of each described contact beam all is embedded with conduit, be provided with the steel pipe pile of squeezing into ground in the described conduit, be perfused with high-strength mortar between described steel pipe pile and the described conduit.
Be provided with a plurality of subdivision plates in the described cartridge type steel wall, all described subdivision plates are arranged in described cartridge type steel pars intramuralis with cellular.
Advantage and good effect that the present invention has are: both had bucket foundation horizontal force resistant, advantage that vertical force is strong, also possessed the good advantage of the anti-foundation liquefaction of pile foundation.Simultaneously, structure can realize that land batch is prefabricated, the marine transportation by driving of cylindrical structure, has reduced the difficulty of offshore construction time and construction.Therefore this kind wind energy conversion system foundation has very high economy.The invention solves that a diameter is excessive, offshore concrete builds and causes long, problems such as the jacket underlying price is high, the regional foundation liquefaction of high earthquake intensity of construction period, and have the advantages that offshore construction is simple, rolled steel dosage is few, economic benefit is high, being applicable to the ground top layer has certain thickness soft foundation.And the unit unit capacity is larger, and advantage is more obvious.
Description of drawings
Fig. 1 cylindrical structure and clump of piles combined type marine windmill foundation longitudinal plan.
Fig. 2 cylindrical structure and clump of piles combined type marine windmill foundation top view.
Among the figure: 1, cartridge type steel wall; 2, subdivision plate; 3, concrete cover; 4, prestressed girder; 5, contact beam; 6, conduit; 7, steel pipe pile; 8, prestressing force linkage section; 9, flange; 10, high-strength mortar; 11, blower fan tower barrel.
The specific embodiment
For further understanding summary of the invention of the present invention, Characteristic, hereby exemplify following examples, and cooperate accompanying drawing to be described in detail as follows:
See also Fig. 1～Fig. 2, a kind of cylindrical structure and clump of piles combined wind machine foundation, comprise polygon or and be arranged on the concrete top cover 3 at its top, concrete top cover 3 closely is connected with cartridge type steel wall 1; Cartridge type steel wall 1 inside is provided with a plurality of subdivision plates 2 with cellular layout, the center of concrete top cover 3 is provided with perpendicular prestressing force linkage section 8, around prestressing force linkage section 8, be provided with a plurality of prestressed girders 4 that radially arrange along concrete top cover 3, all prestressed girders 4 are distributed on the periphery of prestressing force linkage section 8, between two adjacent prestressed girders, be equipped with contact beam 5, institute's beam 5 of being related is evenly arranged along hoop, and prestressed girder 4, contact beam 5, concrete cover 3, prestressing force linkage section 8 are built and be connected to an integral body; The linking beam middle part is embedded with conduit 6, is provided with the steel pipe pile 7 of squeezing into ground in the conduit 6, is perfused with high-strength mortar 10 between steel pipe pile 7 and the conduit 6, is connected to an integral body by high-strength mortar 10 between steel pipe pile 7 and the conduit 6; Prestressing force linkage section top is embedded with flange 9, and the basis is connected with blower fan tower barrel 11 by flange 9.
In the present embodiment, cylinder external diameter 30m, steel wall thickness 30mm, height 8m; The thick 0.5m of concrete top cover; Prestressing force deck-molding 1.2m, wide 0.6m; Link deck-molding 1.2m, wide 1.2m; Conduit wall thickness 20mm, internal diameter 0.62m; Prestressing force linkage section height 6m, external diameter 10m, wall thickness 0.8m; Steel pipe pile diameter 0.6m, wall thickness 40mm, the long 50m of stake.
The Specific construction process on above-mentioned basis: 1) polygon or circular steel wall and subdivision dividing plate are prefabricated; 2) concrete top cover, prestressed girder, contact beam, prestressing force linkage section are prefabricated, wherein contact pre-buried conduit in the beam; 3) mode of employing transportation by driving is transported to the designated mounting place with cylindrical structure; 4) adopt gravity to drown oneself and with negative pressure technique cylindrical structure is sunk to ground, and guarantee that top cover and ground are in contact with one another; 5) by contact beam upper conduit, steel pipe pile is squeezed into ground; 6) after steel pipe pile is squeezed into the precalculated position, high-strength mortar is poured in steel pipe pile and the conduit gap, make it become an integral body; 7) basis installs, and blower fan is installed in lifting.
The present invention combines the advantage of bucket foundation and pile foundation, and adopts land fabrication agent structure, sea to drive piles fast, has shortened the offshore construction duration, has improved economic benefit.
Although the above is described the preferred embodiments of the present invention by reference to the accompanying drawings; but the present invention is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away from the scope situation that aim of the present invention and claim protect, can also make a lot of forms, these all belong within protection scope of the present invention.
Claims (2)
1. a cylindrical structure and clump of piles combined wind machine foundation, it is characterized in that, comprise cartridge type steel wall and the concrete top cover that is arranged on its top, build a plurality of along its prestressed girder that radially arranges on the described concrete top cover, a plurality of contact beams and prestressing force linkage section, described prestressing force linkage section is vertically set on the center of described concrete top cover, a plurality of described prestressed girders circumferentially are distributed on its periphery along described prestressing force linkage section, between two adjacent described prestressed girders, be equipped with described contact beam, the middle part of each described contact beam all is embedded with conduit, be provided with the steel pipe pile of squeezing into ground in the described conduit, be perfused with high-strength mortar between described steel pipe pile and the described conduit.
2. according to claim 1, it is characterized in that, be provided with a plurality of subdivision plates in the described cartridge type steel wall, all described subdivision plates are arranged in described cartridge type steel pars intramuralis with cellular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012105477075A CN102995655A (en) | 2012-12-16 | 2012-12-16 | Cylindrical structure and pile group combined type offshore wind turbine foundation |
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| CN2012105477075A CN102995655A (en) | 2012-12-16 | 2012-12-16 | Cylindrical structure and pile group combined type offshore wind turbine foundation |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225314A (en) * | 2013-05-11 | 2013-07-31 | 天津大学 | Offshore wind power foundation consisting of single pile and cylindrical foundations |
| CN103556651A (en) * | 2013-11-20 | 2014-02-05 | 天津港航工程有限公司 | Precast concrete jacket type offshore wind turbine foundation |
| CN103758146A (en) * | 2014-02-13 | 2014-04-30 | 天津大学前沿技术研究院有限公司 | Guide pipe frame-cylindrical structure combined offshore wind turbine foundation |
| CN103912006A (en) * | 2014-03-14 | 2014-07-09 | 中国水电顾问集团西北勘测设计研究院有限公司 | Assembled multi-pile foundation structure and construction method thereof |
| CN103912007A (en) * | 2014-03-14 | 2014-07-09 | 中国水电顾问集团西北勘测设计研究院有限公司 | Prefabricated concrete cushion cap preserved with foundation ring hole and pile recess ring hole and mounting method of assembly type multi-pile foundation based on cushion cap |
| CN103981887A (en) * | 2014-04-30 | 2014-08-13 | 天津大学 | Large-scale bucket foundation structure suitable for ocean wind electricity |
| CN103981895A (en) * | 2014-04-30 | 2014-08-13 | 天津大学 | Transition type drum-shaped base structure applicable to ocean engineering |
| CN106049525A (en) * | 2016-07-27 | 2016-10-26 | 天津大学 | Polygonal offshore wind power barrel-shaped foundation |
| CN108316341A (en) * | 2018-04-12 | 2018-07-24 | 上海勘测设计研究院有限公司 | Prefabrication type High-Rise Pile Cap Foundation and its construction method |
| CN109372004A (en) * | 2018-09-27 | 2019-02-22 | 天津大学 | A kind of built-in more offshore wind power foundations |
| CN111395381A (en) * | 2020-03-25 | 2020-07-10 | 丁红岩 | Rotary pile raft type apron board foundation and construction method thereof |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225314A (en) * | 2013-05-11 | 2013-07-31 | 天津大学 | Offshore wind power foundation consisting of single pile and cylindrical foundations |
| CN103556651A (en) * | 2013-11-20 | 2014-02-05 | 天津港航工程有限公司 | Precast concrete jacket type offshore wind turbine foundation |
| CN103758146B (en) * | 2014-02-13 | 2015-09-30 | 天津大学前沿技术研究院有限公司 | A kind of jacket-tubular construction combined type offshore wind turbine foundation |
| CN103758146A (en) * | 2014-02-13 | 2014-04-30 | 天津大学前沿技术研究院有限公司 | Guide pipe frame-cylindrical structure combined offshore wind turbine foundation |
| CN103912007B (en) * | 2014-03-14 | 2016-05-25 | 中国电建集团西北勘测设计研究院有限公司 | The installation method of the precast concrete cushion cap of reserved basic annular distance and stake nest annular distance and the many pile foundations of assembled based on this cushion cap |
| CN103912007A (en) * | 2014-03-14 | 2014-07-09 | 中国水电顾问集团西北勘测设计研究院有限公司 | Prefabricated concrete cushion cap preserved with foundation ring hole and pile recess ring hole and mounting method of assembly type multi-pile foundation based on cushion cap |
| CN103912006A (en) * | 2014-03-14 | 2014-07-09 | 中国水电顾问集团西北勘测设计研究院有限公司 | Assembled multi-pile foundation structure and construction method thereof |
| CN103981887A (en) * | 2014-04-30 | 2014-08-13 | 天津大学 | Large-scale bucket foundation structure suitable for ocean wind electricity |
| CN103981895A (en) * | 2014-04-30 | 2014-08-13 | 天津大学 | Transition type drum-shaped base structure applicable to ocean engineering |
| CN103981887B (en) * | 2014-04-30 | 2016-03-30 | 天津大学 | A kind of large scale cylinder-shaped foundation structure being applicable to ocean wind-powered electricity generation |
| CN103981895B (en) * | 2014-04-30 | 2016-08-24 | 天津大学 | A kind of transition type cylinder-shaped foundation structure being applied to ocean engineering |
| CN106049525A (en) * | 2016-07-27 | 2016-10-26 | 天津大学 | Polygonal offshore wind power barrel-shaped foundation |
| CN108316341A (en) * | 2018-04-12 | 2018-07-24 | 上海勘测设计研究院有限公司 | Prefabrication type High-Rise Pile Cap Foundation and its construction method |
| CN109372004A (en) * | 2018-09-27 | 2019-02-22 | 天津大学 | A kind of built-in more offshore wind power foundations |
| CN111395381A (en) * | 2020-03-25 | 2020-07-10 | 丁红岩 | Rotary pile raft type apron board foundation and construction method thereof |
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Application publication date: 20130327 |