CN103184741A - Foundation of composite gravity-type offshore wind power generating unit - Google Patents
Foundation of composite gravity-type offshore wind power generating unit Download PDFInfo
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- CN103184741A CN103184741A CN2013101049218A CN201310104921A CN103184741A CN 103184741 A CN103184741 A CN 103184741A CN 2013101049218 A CN2013101049218 A CN 2013101049218A CN 201310104921 A CN201310104921 A CN 201310104921A CN 103184741 A CN103184741 A CN 103184741A
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Abstract
The invention discloses a foundation of a composite gravity-type offshore wind power generating unit, which is characterized in that a main steel pipe is arranged in the center of the foundation, wherein the upper end of the main steel pipe is connected with a fan tower barrel through a flange, three to five gravity-type caissons are uniformly concentrically arranged on the outer circumference of the main steel pipe, a secondary steel pipe is respectively arranged on each gravity-type caisson, the secondary steel pipes are connected with one another through connecting steel pipes, and the secondary steel pipes are connected with the main steel pipe through the connecting steel pipes. The settling stability of the entire foundation structure is controlled by adjusting the settling speed of a single gravity-type caisson, the applicability to different sea environment and unit capacity is strong, convenience and rapidness in prefabrication and installation can be realized, the construction period is short, the cost is low, and the foundation is suitable for popularized to use in the eastern ocean of China.
Description
Technical field
The invention relates to the foundation of offshore wind farm unit, relate in particular to the foundation of a kind of novel offshore wind farm unit that a plurality of gravity laying foundations are combined with steel frame construction.
Background technology
Each state of the whole world is all at the focus development novel energy now, and wind energy has been subjected 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-powered electricity generation development in recent years is swift and violent, 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 12.60 hundred million kw, account for 12% of world's aggregate demand.Wind energy comprises land wind energy and wind energy on the sea.Comparatively speaking, wind energy on the sea has wind field fluidised form good, not land occupation, advantage that the annual utilization hours number is high.And in China, sea wind energy resource is quite abundant, and the coastal waters wind energy has been 3 times of land wind energy resourceses according to statistics.Therefore, the offshore wind farm energy certainly will will become the major fields of Future in China energy development.
Maritime environment is complicated and changeable to the effect of fan foundation structure, and the safety of foundation structure, economy and compliance are the key factors of restriction offshore wind farm exploitation.At present, offshore wind power unit foundation mainly contains single pile basis, tripod basis, gravity type foundation, tubular basis and floatation type basis several types, and using maximum is single pile basis and gravity type foundation.Traditional gravity type foundation form of structure is simple, and design is easy, but has many defectives.At first, traditional gravity type foundation weight is bigger, and the concrete user measures greatly, and is less economical, and the hoisting difficulty coefficient is big in the work progress, and is dangerous high.Secondly, because own wt is very big, cause transport difficulty big, increased cost of transportation.In addition, traditional gravity type foundation is because its foundation bed directly contacts with ground, and contact area is limited, thus its antiskid with resist the ability of inclining than other base forms relative a little less than.Above defective makes that the extent of spreading amd application of traditional gravity type foundation is very limited, in general only is applicable to the less and geological conditions of single-machine capacity shallow sea area wind energy turbine set preferably.Along with improving constantly of requirements such as single-machine capacity and the depth of water, traditional gravity type foundation certainly will no longer possess good safety, economy and compliance.For this reason, the present invention proposes a kind of compound gravity offshore wind power unit foundation.This basis all has higher-security in construction, transportation and running, and adaptive capacity is strong, good economy performance.
Summary of the invention
Purpose of the present invention, be intended at traditional gravity type foundation have that own wt is big, construction and transport difficulty is big, cost is high, range of application is little defective, a kind of foundation of compound gravity offshore wind farm unit is provided.This basis can address the above problem effectively, and design simultaneously, difficulty of construction is low, and short construction period is good in economic efficiency.
The present invention is achieved by following technical solution.
A kind of foundation of compound gravity offshore wind farm unit, comprise the concrete cavity pedestal, it is characterized in that, central authorities at foundation are provided with main steel pipe 1, the upper end of main steel pipe 1 connects blower fan tower barrel 3 by flange 2, the periphery concentric circles place of main steel pipe 1 evenly is provided with gravity caisson A4, gravity caisson B5 and gravity caisson C6, the top flange A7 that passes through of described gravity caisson, flange B8 and flange C9 are respectively arranged with time steel pipe A10, inferior steel pipe B11 and time steel pipe C12, be respectively arranged with bed course A13 below the gravity caisson, bed course B14 and bed course C15, pass through contact steel pipe AB16 between described the steel pipe, contact steel pipe BC17 and contact steel pipe CA18 and be connected, between inferior steel pipe and the main steel pipe 1 by contacting steel pipe A I 19, contact steel pipe A II 20, contact steel pipe A III 21 and contact steel pipe B I 22, contact steel pipe B II 23, contact steel pipe B III 24 is connected;
Described gravity caisson is taper type steel concrete cavity structure, is provided with sandstone 25 in its cavity.
Described gravity caisson is set to 3～5.
The diameter of going to the bottom of described gravity caisson is 10m, and the upper base diameter is 4m, and height is 10m, and thick is 0.5m; The preloading of its cavity inside sandstone 25 highly is 5m.
Described main steel pipe 1 be diameter 4m, height is 20m, wall thickness 45mm.
The diameter of described steel pipe is 4m, and height is 5m, wall thickness 30mm.
The diameter of described contact steel pipe A I 19, contact steel pipe A II 20 and contact steel pipe A III 21 is 2.0m; The diameter of contact steel pipe B I 22, contact steel pipe B II 23, contact steel pipe B III 24 and contact steel pipe AB16, contact steel pipe BC17, contact steel pipe CA18 is 1.2m; Institute's thickness of steel pipe of being related is 25mm.
The thickness of described bed course is 0.3m.
The present invention is because a plurality of gravity caissons compositions of employing are bigger with the contact range of ground, so its basis has good stable and safety in transportation and running.In the sinking process, can control the uniformity and stability that whole foundation structure is sunk by the subsidence velocity of regulating single gravity caisson, simple to operation, and avoided in caisson inside compartment being set.In addition, material usage of the present invention is less, and the design and construction cost is low, and the ability that adapts to different waters environment and single-machine capacity is strong, prefabricated quick and easy for installation, and short construction period has good and economic, suits to promote the use of in the east China marine site.
Description of drawings
Fig. 1 is the foundation schematic three dimensional views of a kind of compound gravity offshore wind farm unit of the present invention;
Fig. 2 is Fig. 1 vertical view.
Reference numeral is as follows:
1---main steel pipe 2---flange
3---blower fan tower barrel 4---gravity caisson A
5---gravity caisson B 6---gravity caisson C
7---flange A 8---flange B
The inferior steel pipe A of 9---flange C 10---
The inferior steel pipe C of 11---inferior steel pipe B 12---
13---bed course A 14---bed course B
15---bed course C 16---contact steel pipe AB
17---contact steel pipe BC 18---contact steel pipe CA
19---contact steel pipe A I 20---contact steel pipe AII
21---contact steel pipe AIII 22---contact steel pipe B I
23---contact steel pipe BII 24---contact steel pipe BIII
25---sandstone
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further described.
As shown in Figure 1 and Figure 2, be provided with main steel pipe 1 in the central authorities of foundation, the upper end of main steel pipe 1 is provided with blower fan tower barrel 3 by flange 2; Main steel pipe 1 be diameter 4m, height is 20m, wall thickness 45mm.
The periphery concentric circles place of main steel pipe 1, be radial gravity caisson A4, gravity caisson B5 and the gravity caisson C6 of being provided with equably, the gravity caisson is taper type steel concrete cavity structure, and inside configuration arranges prestressed reinforcement; Described gravity caisson can be set to 3～5, and its diameter of going to the bottom is 10m, and the upper base diameter is 4m, and height is 10m, and thick is 0.5m; Be provided with sandstone 25 in its cavity, the preloading of sandstone highly is 5m..
The top of gravity caisson is respectively arranged with time steel pipe A10, inferior steel pipe B11 and inferior steel pipe C12 by flange 7, flange B8 and flange C9; The diameter of inferior steel pipe is 4m, and height is 5m, wall thickness 30mm.
Be respectively arranged with bed course A13, bed course B14 and bed course C15 below the gravity caisson; Described cushion thickness is 0.3m, adopts the plain concrete material.
Be connected with contact steel pipe CA18 by contact steel pipe AB16, contact steel pipe BC17 between the inferior steel pipe, between inferior steel pipe and the main steel pipe 1 by contacting steel pipe A I 19, contact steel pipe A II 20, contact steel pipe A III 21 and contact steel pipe B I 22, contact steel pipe B II 23, contacting steel pipe B III 24 and be connected; The diameter of described contact steel pipe A I 19, contact steel pipe A II 20 and contact steel pipe A III 21 is 2.0m; The diameter of contact steel pipe B I 22, contact steel pipe B II 23, contact steel pipe B III 24 and contact steel pipe AB16, contact steel pipe BC17, contact steel pipe CA18 is 1.2m; The wall thickness of the steel pipe of being related is 25mm.
Concrete work progress of the present invention is as follows:
1, prefabricated gravity caisson and steel frame construction;
2, prefabricated gravity caisson and steelframe shelf structure are assembled, formed composite base structure;
2, handle the sea bed ground and lay bed course;
3, foundation structure is transported to the appointed place;
4, gravity type foundation is carried out foundation immersion;
5, throw in sandstone as preloading in gravity type foundation inside;
6, the blower fan unit is installed.
Claims (7)
1. the foundation of a compound gravity offshore wind farm unit, comprise the concrete cavity pedestal, it is characterized in that, central authorities at foundation are provided with main steel pipe (1), the upper end of main steel pipe (1) connects blower fan tower barrel (3) by flange (2), the periphery concentric circles place of main steel pipe (1) evenly is provided with gravity caisson A(4), gravity caisson B(5) and gravity caisson C(6), the top flange A(7 that passes through of described gravity caisson), flange B(8) and flange C(9) be respectively arranged with time steel pipe A(10), inferior steel pipe B(11) and time steel pipe C(12), be respectively arranged with bed course A(13 below the gravity caisson), bed course B(14) and bed course C(15), pass through contact steel pipe AB(16 between described the steel pipe), contact steel pipe BC(17) with contact steel pipe CA(18) be connected, pass through contact steel pipe A I (19) between inferior steel pipe and the main steel pipe (1), contact steel pipe AII(20), contact steel pipe AIII(21) and contact steel pipe B I (22), contact steel pipe BII(23), contact steel pipe BIII(24) is connected;
Described gravity caisson is taper type steel concrete cavity structure, is provided with sandstone (25) in its cavity.
2. according to the foundation of a kind of compound gravity offshore wind farm unit of claim 1, it is characterized in that described gravity caisson is set to 3～5.
3. according to the foundation of a kind of compound gravity offshore wind farm unit of claim 1, it is characterized in that the diameter of going to the bottom of described gravity caisson is 10m, the upper base diameter is 4m, and height is 10m, and thick is 0.5m; The preloading of its cavity inside sandstone (25) highly is 5m.
4. according to the foundation of a kind of compound gravity offshore wind farm unit of claim 1, it is characterized in that, described main steel pipe (1) be diameter 4m, height is 20m, wall thickness 45mm.
5. according to the foundation of a kind of compound gravity offshore wind farm unit of claim 1, it is characterized in that the diameter of described steel pipe is 4m, height is 5m, wall thickness 30mm.
6. according to the foundation of a kind of compound gravity offshore wind farm unit of claim 1, it is characterized in that described contact steel pipe A I (19), contact steel pipe AII(20) and contact steel pipe AIII(21) diameter be 2.0m; Contact steel pipe B I (22), contact steel pipe BII(23), contact steel pipe BIII(24) and contact steel pipe AB(16), contact steel pipe BC(17), contact steel pipe CA(18) diameter be 1.2m; Institute's thickness of steel pipe of being related is 25mm.
7. according to the foundation of a kind of compound gravity offshore wind farm unit of claim 1, it is characterized in that the thickness of described bed course is 0.3m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101049218A CN103184741A (en) | 2013-03-28 | 2013-03-28 | Foundation of composite gravity-type offshore wind power generating unit |
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| CN2013101049218A CN103184741A (en) | 2013-03-28 | 2013-03-28 | Foundation of composite gravity-type offshore wind power generating unit |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469808A (en) * | 2013-09-24 | 2013-12-25 | 广东明阳风电产业集团有限公司 | Offshore wind turbine foundation integrating concrete caisson and jacket |
| CN103758147A (en) * | 2014-02-13 | 2014-04-30 | 天津大学前沿技术研究院有限公司 | Gravity type offshore wind turbine generator set foundation and towing and sinking method thereof |
| CN103981892A (en) * | 2014-04-30 | 2014-08-13 | 天津大学 | Four-cylindrical foundation combined foundation structure system with support |
| CN103981894A (en) * | 2014-04-30 | 2014-08-13 | 天津大学 | Multi-cylindrical foundation combined foundation structure system |
| CN103981888A (en) * | 2014-04-30 | 2014-08-13 | 天津大学 | Transitional ocean engineering foundation structure system |
| CN104652465A (en) * | 2015-02-10 | 2015-05-27 | 中交一航局第三工程有限公司 | Seaborne wind turbine generator caisson foundation structure and construction method thereof |
| CN105155568A (en) * | 2015-07-20 | 2015-12-16 | 三一重型能源装备有限公司 | Offshore wind power generating unit, onshore wind power generating unit foundation and installation method of onshore wind power generating unit foundation |
| CN105971002A (en) * | 2016-06-30 | 2016-09-28 | 三重型能源装备有限公司 | Marine fan, gravity type marine fan foundation, and mounting and construction method of gravity type marine fan foundation |
| CN106245671A (en) * | 2016-07-26 | 2016-12-21 | 天津大学 | A kind of combination type offshore wind power foundation and construction method thereof |
| SE2151522A1 (en) * | 2020-12-28 | 2022-06-29 | Nabrawind Tech S L | A wind turbine |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469808B (en) * | 2013-09-24 | 2015-12-30 | 广东明阳风电产业集团有限公司 | The offshore wind turbine foundation that a kind of concrete caisson and jacket combine |
| CN103469808A (en) * | 2013-09-24 | 2013-12-25 | 广东明阳风电产业集团有限公司 | Offshore wind turbine foundation integrating concrete caisson and jacket |
| CN103758147B (en) * | 2014-02-13 | 2015-12-09 | 天津大学前沿技术研究院有限公司 | A kind of gravity type offshore wind crew base and towage thereof and sinking method |
| CN103758147A (en) * | 2014-02-13 | 2014-04-30 | 天津大学前沿技术研究院有限公司 | Gravity type offshore wind turbine generator set foundation and towing and sinking method thereof |
| CN103981894A (en) * | 2014-04-30 | 2014-08-13 | 天津大学 | Multi-cylindrical foundation combined foundation structure system |
| CN103981888A (en) * | 2014-04-30 | 2014-08-13 | 天津大学 | Transitional ocean engineering foundation structure system |
| CN103981892A (en) * | 2014-04-30 | 2014-08-13 | 天津大学 | Four-cylindrical foundation combined foundation structure system with support |
| CN103981894B (en) * | 2014-04-30 | 2016-04-13 | 天津大学 | A kind of foundation structure system of multiple bucket foundation combination |
| CN103981892B (en) * | 2014-04-30 | 2016-04-13 | 天津大学 | A kind of four bucket foundation combined type foundation structure systems with support |
| CN104652465A (en) * | 2015-02-10 | 2015-05-27 | 中交一航局第三工程有限公司 | Seaborne wind turbine generator caisson foundation structure and construction method thereof |
| CN105155568A (en) * | 2015-07-20 | 2015-12-16 | 三一重型能源装备有限公司 | Offshore wind power generating unit, onshore wind power generating unit foundation and installation method of onshore wind power generating unit foundation |
| CN105155568B (en) * | 2015-07-20 | 2018-05-08 | 三一重型能源装备有限公司 | Offshore wind farm unit, offshore wind farm crew base and its installation method |
| CN105971002A (en) * | 2016-06-30 | 2016-09-28 | 三重型能源装备有限公司 | Marine fan, gravity type marine fan foundation, and mounting and construction method of gravity type marine fan foundation |
| CN106245671A (en) * | 2016-07-26 | 2016-12-21 | 天津大学 | A kind of combination type offshore wind power foundation and construction method thereof |
| SE2151522A1 (en) * | 2020-12-28 | 2022-06-29 | Nabrawind Tech S L | A wind turbine |
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Application publication date: 20130703 |