CN103290859A - Guyed flanged multi-auxiliary-single-pile wind power foundation and construction method thereof - Google Patents
Guyed flanged multi-auxiliary-single-pile wind power foundation and construction method thereof Download PDFInfo
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- CN103290859A CN103290859A CN2013102175345A CN201310217534A CN103290859A CN 103290859 A CN103290859 A CN 103290859A CN 2013102175345 A CN2013102175345 A CN 2013102175345A CN 201310217534 A CN201310217534 A CN 201310217534A CN 103290859 A CN103290859 A CN 103290859A
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Abstract
The invention discloses a guy type flanged multi-auxiliary-single-pile wind power foundation and a construction method thereof. A plurality of auxiliary piles with flange plates are evenly distributed around a main pile, and guys are connected among the main pile and the auxiliary piles via guy fixing devices. The construction method includes: transporting the main pile and the auxiliary piles to an installation site and mounting the same in place respectively, and pre-tensioning the guys by taking the guy fixing device on the main pile as a fixed end and the guy fixing devices on the auxiliary piles as tensioning ends. Horizontal force and bending torque of an upper fan are transmitted to the auxiliary piles via tensioning force of the guys, so that reduction of bending torque load generated on the main pile can be realized effectively, the size of the main pile can be reduced, and cost is lowered; the auxiliary piles mainly bear tensioning force from the guys, and since strong bending torque resistance performance can be supplied by the guys, design sizes of the auxiliary piles are reduced relatively, cost is lowered, and construction technology is simple; due to the arrangement of the flange plates on the auxiliary piles, bearing capability of the auxiliary piles are improved, and material cost is further reduced.
Description
Technical field
The present invention relates to the foundation structure of building field, specifically, relate to a kind of many single piles basis by offshore wind farm foundation structure and the job practices thereof of drag-line cooperative bearing.
Background technology
The offshore wind farm structure belongs to that vertical load is less relatively, horizontal loading and the bigger marine tall and slender structure of moment of flexure, and resistance to capsizing requires high.At present, the structural shape of offshore wind power unit foundation employing is generally single pile basis, many pile foundations, gravity type foundation.
The single pile basis is common offshore wind farm base form, and its simple in structure, stressed mechanism is clear and definite, is used for the following wind energy conversion system better economy of 1.5MW.Yet, because the single pile basis exists that resistance to capsizing is poor, level is to weakness such as displacement are big, along with the offshore wind turbine single-machine capacity is increased to 3MW, 5MW or bigger, must cause diameter, wall thickness and the depth of penetration on single pile basis sharply to increase, cause the marine guidance piling constructional difficulties, construction cost significantly raises.Many pile foundations can be disperseed load effectively, improve resistance to capsizing, but structure and construction technology complexity require height to sea conditions, cause long construction period, construction cost height.The bucket foundation speed of application is fast, but for bigger resistance to capsizing is provided, the diameter of bucket foundation is bigger, and construction cost is higher.
Adopt above traditional offshore wind farm unit foundation structure, its foundation construction cost and offshore construction are with high costs, cause the more land basis of investment cost of offshore wind power unit foundation to increase considerably, thereby have limited the development of offshore wind farm.
Summary of the invention
What the present invention will solve is that offshore wind farm unit foundation structure is built and the high technical problem of marine cost, provide by a king pile and be connected associating stressed many auxiliary single pile wind-powered electricity generation bases, the drag-line band edge of a wing and job practices thereof with the Duo Gen auxiliary pile by drag-line, realization is used than paxilla footpath and less stake number and is reached load bearing requirements, and then reduce offshore construction cost and material cost, accelerate speed of application.
In order to solve the problems of the technologies described above, the present invention is achieved by following technical scheme:
Many auxiliary single pile wind-powered electricity generations basis, a kind of drag-line band edge of a wing, be evenly equipped with the king pile of many auxiliary piles around comprising, each described auxiliary pile outside symmetry be provided with frange plate, be connected with drag-line between described king pile and each the described auxiliary pile, one end of described drag-line is fixed in described auxiliary pile top by the drag-line fastening devices, and the other end is fixed in described king pile top by the drag-line fastening devices.
The quantity of described drag-line and described auxiliary pile is 3～8.
Described drag-line angle with respect to the horizontal plane is 0 °～60 °.
Described drag-line is wherein a kind of of cable wire, steel wire or steel strand.
Described drag-line fastening devices is positioned on the horizontal plane.
Described drag-line fastening devices is a kind of in intermediate plate ground tackle, heading ground tackle, the thread anchorage.
Described frange plate is arranged on whole pile cutofves on described single pile basis or goes on the pile cutoff of mud part.
The quantity of described frange plate is 1～6.
The job practices on many auxiliary single pile wind-powered electricity generations basis, a kind of drag-line band edge of a wing comprises the steps:
(1) prefabricated king pile and Duo Gen auxiliary pile, every described auxiliary pile outside symmetry frange plate is set; Described king pile evenly arranges the drag-line fastening devices identical with described auxiliary pile quantity, on each described auxiliary pile the drag-line fastening devices is set respectively;
(2) described king pile and the described auxiliary pile of Duo Gen are transported to the infield;
(3) location, infield;
(4) with described king pile and the described auxiliary pile difference of Duo Gen installation in position;
(5) with the described drag-line fastening devices on the described king pile as fixed end, the described drag-line fastening devices on the described auxiliary pile is carried out pre-stretch-draw as the stretch-draw end to drag-line.
The vertical load of top wind-powered electricity generation unit transmission all is delivered to king pile, and the horizontal loading of top wind-powered electricity generation unit transmission and the fraction of moment of flexure are delivered to king pile, most of horizontal loading and moment of flexure are delivered to auxiliary pile by the pulling force of drag-line, born by auxiliary pile, because the arm of force of drag-line pulling force is very big, has very strong bending resistance square ability, therefore the design size of auxiliary pile is compared traditional single pile wind-powered electricity generation basis and is reduced greatly, by auxiliary pile being gone into mud frange plate is set partly, to increase the contact area of horizontal direction pile body and the soil body, thereby improve horizontal bearing capacity and the uplift resistance of auxiliary pile, the use of frange plate can reduce the total material usage of pile body greatly.Because the drag-line pulling force has been resisted most of horizontal force and moment of flexure, make the load that is delivered to king pile be mainly vertical load, moment of flexure and horizontal loading level reduce greatly, thus the horizontal movement that is positioned at the wind-powered electricity generation structure on king pile top significantly reduces.Owing to the load bearing requirements to king pile reduces greatly, the king pile design size is corresponding to be reduced, thereby has reduced material cost simultaneously.Described auxiliary pile mainly bears the drag-line pulling force, the drag-line pulling force has been resisted most of horizontal loading and moment of flexure that the top blower fan transmits, because the arm of force of drag-line pulling force is bigger, stronger bending resistance square ability can be provided, therefore the design size of auxiliary pile is less relatively, thereby has reduced material cost and construction cost.
The invention has the beneficial effects as follows:
Many auxiliary single pile wind-powered electricity generations basis, the drag-line band of the present invention edge of a wing is that a king pile is connected the stressed new structure of associating with a plurality of auxiliary piles by drag-line, improves a lot in the more independent single pile basis of its integral rigidity, anti-horizontal loading and moment of flexure ability.
Many auxiliary single pile wind-powered electricity generations basis, the drag-line band of the present invention edge of a wing has taken full advantage of pile foundation level and vertical bearing capacity height, soil layer is suitable for strong, the stressed advantage that clearly waits of ability: the auxiliary pile around by the drag-line pulling force horizontal force of top wind-powered electricity generation unit transmission and moment of flexure being delivered to, effectively realize reducing the moment load that wind-powered electricity generation unit load produces king pile, reduce the horizontal movement of king pile top wind-powered electricity generation structure, and reduced the king pile physical dimension, reduced material cost; Auxiliary pile mainly bears the drag-line pulling force, because the arm of force of drag-line pulling force is bigger, can provide stronger bending resistance square ability, so the design size of auxiliary pile is less relatively, makes material cost significantly reduce, and construction technology is also more simple; Frange plate is set to improve the supporting capacity of auxiliary pile by auxiliary pile being gone into the mud pile cutoff simultaneously, material cost is further reduced.In addition, be distributed in king pile auxiliary pile all around and possess the fender pile function, can protect the wind-powered electricity generation unit that is positioned on the king pile to avoid being subjected to ship collision.
Many the auxiliary single pile wind-powered electricity generation foundation construction methods in the drag-line band of the present invention edge of a wing have mainly comprised the installation of king pile and auxiliary pile and the stretch-draw of drag-line, because the stake footpath is little, the stake number is few, than offshore wind turbine single pile basis for offshore construction machinery require low, greatly reduce difficulty of construction and construction cost, than the many pile foundations that are widely used in offshore wind farm at present, construction technology is simple, can shorten construction period greatly.
Description of drawings
Fig. 1 is the front view on many auxiliary single pile wind-powered electricity generations basis, the drag-line band provided by the present invention edge of a wing;
Fig. 2 is the vertical view on many auxiliary single pile wind-powered electricity generations basis, the drag-line band provided by the present invention edge of a wing;
Fig. 3 is the perspective view on many auxiliary single pile wind-powered electricity generations basis, the drag-line band provided by the present invention edge of a wing.
Among the figure: 1, king pile; 2, auxiliary pile; 3, drag-line; 4, drag-line fastening devices; 5, frange plate.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
As shown in Figure 1 to Figure 3, present embodiment has disclosed many auxiliary single pile wind-powered electricity generations basis, a kind of drag-line band edge of a wing, mainly comprises king pile 1, auxiliary pile 2, frange plate 5, drag-line 3 and drag-line fastening devices 4.Wherein drag-line 3 is cable wire, steel wire or steel strand, and is in tension state; Drag-line fastening devices 4 is intermediate plate ground tackle, heading ground tackle, thread anchorage etc., provides effective restraint forces after drag-line 3 stretch-draw.
Among this embodiment, construction marine site mean depth 10m, extreme high water level elevation 2.4m.King pile 1 is that diameter is 4.5m, and length is 65m, and wall thickness is the steel pipe pile of 45mm.King pile 1 evenly arranges four drag-line fastening devicess 4 apart from the above 21m of mud face place.
King pile 1 links to each other by the drag-line 3 that is fixed on the drag-line fastening devices 4 with four auxiliary piles 2 around being distributed in king pile 1.Carry out stretch-draw by jack pair drag-line 3, utilize drag-line fastening devices 4 to carry out anchoring after the stretch-draw, thereby moment of flexure and the horizontal loading of top wind-powered electricity generation structure transmission is delivered to auxiliary pile 2.Drag-line 3 is 18o with the angle of horizontal plane, and the common span of this angle is 0 °～60 °, effective transmission of convenient construction and load.Generally according to the relative position of auxiliary pile 2 and king pile 1, consider easy construction, determine on the king pile 1 earlier respectively and the height of drag-line fastening devices 4 on the auxiliary pile 2, determine angle according to 2 lines again.
In addition, the angle on every auxiliary pile 2 corresponding drag-line 3 and this auxiliary pile 2 between any frange plate 5 greater than 0 °, less than 180 °, that is to say that drag-line 3 is not on the plane at any frange plate 5 places; Its reason is that the soil body on drag-line 3 directions is bigger owing to being disturbed, and soil strength and friction factor reduce, and when frange plate 5 was consistent with drag-line 3 directions, the frictional force that 5 of frange plates can provide reduced, thereby causes bearing capacity to reduce.
The job practices on many auxiliary single pile wind-powered electricity generations basis, the drag-line band edge of a wing of present embodiment is as follows:
(1) earlier prefabricated king pile 1 and four auxiliary piles 2, every auxiliary pile 2 outside symmetries four blocks of frange plates 5 are set; Simultaneously four drag-line fastening devicess 4 are set evenly on king pile 1, on each auxiliary pile 2 drag-line fastening devices 4 are set respectively;
(2) king pile 1 and four auxiliary piles 2 are hauled to the infield;
(3) location, infield;
(4) with king pile 1 and four auxiliary pile 2 difference installation in position;
(5) with the drag-line fastening devices 4 on the king pile 1 as fixed end, the drag-line fastening devices 4 on the auxiliary pile 2 is carried out pre-stretch-draw as the stretch-draw end to drag-line 3.
Although by reference to the accompanying drawings the preferred embodiments of the present invention are described above; 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 under the scope situation that aim of the present invention and claim protect, can also make the concrete conversion of a lot of forms, these all belong within protection scope of the present invention.
Claims (9)
1. many auxiliary single pile wind-powered electricity generations basis, a drag-line band edge of a wing, it is characterized in that, be evenly equipped with the king pile of many auxiliary piles around comprising, each described auxiliary pile is gone into the frange plate that is provided with of mud pile cutoff outside symmetry, be connected with drag-line between described king pile and each the described auxiliary pile, one end of described drag-line is fixed in described auxiliary pile top by the drag-line fastening devices, and the other end is fixed in described king pile top by the drag-line fastening devices.
2. many auxiliary single pile wind-powered electricity generations basis, a kind of drag-line band edge of a wing according to claim 1 is characterized in that the quantity of described drag-line and described auxiliary pile is 3～8.
3. many auxiliary single pile wind-powered electricity generations basis, a kind of drag-line band edge of a wing according to claim 1 is characterized in that described drag-line angle with respect to the horizontal plane is 0 °～60 °.
4. many auxiliary single pile wind-powered electricity generations basis, a kind of drag-line band edge of a wing according to claim 1 is characterized in that, described drag-line is wherein a kind of of cable wire, steel wire or steel strand.
5. many auxiliary single pile wind-powered electricity generations basis, a kind of drag-line band edge of a wing according to claim 1 is characterized in that described drag-line fastening devices is positioned on the horizontal plane.
6. many auxiliary single pile wind-powered electricity generations basis, a kind of drag-line band edge of a wing according to claim 1 is characterized in that, described drag-line fastening devices is a kind of in intermediate plate ground tackle, heading ground tackle, the thread anchorage.
7. many bucket foundation composite constructions in a kind of drag-line band edge of a wing according to claim 1 is characterized in that the quantity of described frange plate is 1～6.
8. many bucket foundation composite constructions in a kind of drag-line band edge of a wing according to claim 1 is characterized in that, every corresponding drag-line of described auxiliary pile and on it angle between any frange plate greater than 0 °, less than 180 °.
9. the job practices as many auxiliary single pile wind-powered electricity generations basis, the drag-line band edge of a wing as described in the claim 1-8 is characterized in that, comprises the steps:
(1) prefabricated king pile and Duo Gen auxiliary pile, every described auxiliary pile outside symmetry frange plate is set; Described king pile evenly arranges the drag-line fastening devices identical with described auxiliary pile quantity, on each described auxiliary pile the drag-line fastening devices is set respectively;
(2) described king pile and the described auxiliary pile of Duo Gen are transported to the infield;
(3) location, infield;
(4) with described king pile and the described auxiliary pile difference of Duo Gen installation in position;
(5) with the described drag-line fastening devices on the described king pile as fixed end, the described drag-line fastening devices on the described auxiliary pile is carried out pre-stretch-draw as the stretch-draw end to drag-line.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102175345A CN103290859A (en) | 2013-05-31 | 2013-05-31 | Guyed flanged multi-auxiliary-single-pile wind power foundation and construction method thereof |
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| CN2013102175345A CN103290859A (en) | 2013-05-31 | 2013-05-31 | Guyed flanged multi-auxiliary-single-pile wind power foundation and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118087594A (en) * | 2024-04-28 | 2024-05-28 | 江苏道达风电设备科技有限公司 | Wind power foundation stabilization device |
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| CN202323978U (en) * | 2011-12-08 | 2012-07-11 | 华锐风电科技(集团)股份有限公司 | Base components for offshore wind power set installation |
| CN102852156A (en) * | 2012-08-01 | 2013-01-02 | 天津大学 | Composite pile foundation structure |
| CN102877479A (en) * | 2012-09-11 | 2013-01-16 | 天津大学 | Foundation structure for uplift pile |
| CN203320542U (en) * | 2013-05-31 | 2013-12-04 | 天津大学 | Guyed flanged multi-auxiliary-pile single-pile wind turbine foundation |
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2013
- 2013-05-31 CN CN2013102175345A patent/CN103290859A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000046452A1 (en) * | 1999-02-05 | 2000-08-10 | 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 |
| CN202323978U (en) * | 2011-12-08 | 2012-07-11 | 华锐风电科技(集团)股份有限公司 | Base components for offshore wind power set installation |
| CN102852156A (en) * | 2012-08-01 | 2013-01-02 | 天津大学 | Composite pile foundation structure |
| CN102877479A (en) * | 2012-09-11 | 2013-01-16 | 天津大学 | Foundation structure for uplift pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118087594A (en) * | 2024-04-28 | 2024-05-28 | 江苏道达风电设备科技有限公司 | Wind power foundation stabilization device |
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Application publication date: 20130911 |