CN203320542U - Guyed flanged multi-auxiliary-pile single-pile wind turbine foundation - Google Patents

Guyed flanged multi-auxiliary-pile single-pile wind turbine foundation Download PDF

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Publication number
CN203320542U
CN203320542U CN2013203164733U CN201320316473U CN203320542U CN 203320542 U CN203320542 U CN 203320542U CN 2013203164733 U CN2013203164733 U CN 2013203164733U CN 201320316473 U CN201320316473 U CN 201320316473U CN 203320542 U CN203320542 U CN 203320542U
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China
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pile
auxiliary
drag
line
many
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Expired - Fee Related
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CN2013203164733U
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Chinese (zh)
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丁红岩
乐丛欢
练继建
张浦阳
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Tianjin University
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Tianjin University
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Abstract

The utility model discloses a guyed flanged multi-auxiliary-pile single-pile wind turbine foundation comprising a main pile, multiple auxiliary piles are distributed around the main pile uniformly, flange plates are arranged on the outer side of a soil pile section of each auxiliary pile symmetrically, a guy is connected between the main pile and each auxiliary pile, and one end of each guy is fixedly connected to the upper portion of each auxiliary pile through a guy fixing device while the other end of the same is fixedly connected to the upper portion of the main pile through another guy fixing device. Horizontal force and bending moment transmitted by an upper wind turbine are transmitted to the auxiliary piles through tensile force of the guys, moment load on the main pile is reduced effectively, size of the main pile is decreased, and cost is lowered; the auxiliary piles mainly bear the tensile force of the guys; since the guys can provide high bending moment resisting capacity, design sizes of the auxiliary piles are small relatively, cost is reduced, and a construction process is simpler; meanwhile, the flange plates are arranged on the auxiliary piles to improve bearing capacity of the auxiliary piles and enable material cost to be further lowered.

Description

Auxiliary single pile wind-powered electricity generation basis, many, a kind of drag-line band edge of a wing
Technical field
The utility model relates to the foundation structure of building field, specifically, relates to a kind of many single-pile foundations by the offshore wind power foundation structure of drag-line cooperative bearing.
Background technology
The offshore wind farm structure belongs to the marine tall and slender structure that vertical load less, horizontal loading and moment of flexure are larger, and resistance to capsizing requires high.At present, the structural shape that offshore wind power unit foundation adopts is generally single-pile foundation, many pile foundations, gravity type foundation.
Single-pile foundation is common offshore wind power foundation form, and it is simple in structure, mechanical behavior is clear and definite, for the wind energy conversion system better economy below 1.5MW.Yet, because single-pile foundation exists that resistance to capsizing is poor, level is to weakness such as displacement are large, along with the offshore wind turbine single-machine capacity is increased to 3MW, 5MW or larger, must cause diameter, wall thickness and the depth of penetration of single-pile foundation 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 complicated construction technique, sea conditions are required high, cause long construction period, construction cost high.The bucket foundation speed of application is fast, but, for larger resistance to capsizing is provided, the diameter of bucket foundation is larger, and construction cost is higher.
Adopt above traditional offshore wind turbine generator 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.
The utility model content
To be solved in the utility model is that offshore wind turbine generator foundation structure is built and the high technical problem of marine cost, provide and be connected the auxiliary single pile wind-powered electricity generation basis, many, the drag-line band edge of a wing of coaction by a king pile 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 utility model is achieved by following technical scheme:
Auxiliary single pile wind-powered electricity generation basis, many, a kind of drag-line band edge of a wing, comprise that surrounding is evenly equipped with the king pile of many auxiliary piles, each described auxiliary pile outside is symmetrical is provided with frange plate, be connected with drag-line between described king pile and each 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 horizontal plane.
Described drag-line fastening devices is a kind of in intermediate plate ground tackle, heading ground tackle, thread anchorage.
Described frange plate is arranged on whole pile cutofves of described single-pile foundation or enters on the pile cutoff of mud part.
The quantity of described frange plate is 1~6.
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, by auxiliary pile, born, because the arm of force of drag-line pulling force is very large, there is 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 greatly reduced, by auxiliary pile being entered to mud, frange plate partly is set, 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.Because 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 larger, stronger bending resistance square ability can be provided, so the design size less of auxiliary pile, thereby material cost and construction cost have been reduced.
The beneficial effects of the utility model are:
Auxiliary single pile wind-powered electricity generation basis, many, the drag-line band of the present utility model edge of a wing is that a king pile is connected the new structure of coaction by drag-line with a plurality of auxiliary piles, and its integral rigidity, the flat load of water resistant and the more independent single-pile foundation of moment of flexure ability improve a lot.
Auxiliary single pile wind-powered electricity generation basis, many, the drag-line band of the present utility model edge of a wing takes full advantage of the pile foundation level and vertical bearing capacity is high, applicable strong, the stressed advantage that clearly waits of ability of soil layer: the auxiliary pile that the horizontal force of top wind-powered electricity generation unit transmission and moment of flexure is delivered to surrounding by the drag-line pulling force, 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 larger, can provide stronger bending resistance square ability, so the design size less of auxiliary pile, 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 entered to the mud pile cutoff simultaneously, material cost is further reduced.In addition, the auxiliary pile that is distributed in the king pile surrounding possesses the fender pile function, can protect the wind-powered electricity generation unit be positioned on king pile to avoid being subject to ship collision.
The accompanying drawing explanation
Fig. 1 is the front view on many auxiliary single pile wind-powered electricity generation bases, the drag-line band provided by the utility model edge of a wing;
Fig. 2 is the top view on many auxiliary single pile wind-powered electricity generation bases, the drag-line band provided by the utility model edge of a wing;
Fig. 3 is the perspective view on many auxiliary single pile wind-powered electricity generation bases, the drag-line band provided by the utility model edge of a wing.
In 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 utility model, characteristics and effect, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
As shown in Figure 1 to Figure 3, the present embodiment has disclosed auxiliary single pile wind-powered electricity generation basis, many, 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 in tension state; Drag-line fastening devices 4 is intermediate plate ground tackle, heading ground tackle, thread anchorage etc., after drag-line 3 stretch-draw, provides effective restraint forces.
In 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, the steel pipe pile that wall thickness is 45mm.King pile 1 evenly arranges four drag-line fastening devicess 4 apart from the above 21m of mud face place.
Auxiliary pile 2 is that diameter is 1.8m, and long is 65m, the steel pipe pile that wall thickness is 30mm, and auxiliary pile 2 enters mud 40m.Every auxiliary pile 2 pile body outside below the mud face is symmetrically arranged with four blocks of frange plates 5, the every long 40m of frange plate 5, wide 500mm, thick 30mm.Frange plate 5 can be arranged at whole pile cutofves or the part pile cutoff that auxiliary pile 2 enters the mud pile cutoff.
Auxiliary pile 2 above water 3.5m place arranges 1 drag-line fastening devices 4, its advantage that drag-line fastening devices 4 is arranged on above water is, drag-line 3 can be realized carrying out stretching construction more than the water surface, has avoided the inconvenience of subaqueous construction, has improved efficiency of construction and cost.
Auxiliary pile 2 is distributed in symmetrically around it centered by king pile 1, amounts to four, auxiliary pile 2 centre distance king pile 1 center 25m.
King pile 1 is connected by the drag-line 3 be fixed on 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, after stretch-draw, utilize drag-line fastening devices 4 to carry out anchoring, thereby moment of flexure and the horizontal loading of top wind-powered electricity generation structure transmission are delivered to auxiliary pile 2.Drag-line 3 is 18 ° 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, first determine respectively on king pile 1 and the height of drag-line fastening devices 4 on auxiliary pile 2, then determine angle according to 2 lines.
In addition, the angle on every corresponding drag-line 3 of auxiliary pile 2 and this auxiliary pile 2 between any frange plate 5 is greater than 0 °, is less than 180 °, that is to say, 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 larger owing to being disturbed, and soil strength and friction factor reduce, and when frange plate 5 and drag-line 3 directions, when consistent, the frictional force that 5 of frange plates can provide reduces, thereby causes the bearing capacity reduction.
The job practices on many auxiliary single pile wind-powered electricity generation bases, the above-mentioned drag-line band edge of a wing is as follows:
(1) first prefabricated king pile 1 and four auxiliary piles 2, every auxiliary pile 2 outside symmetries four blocks of frange plates 5 are set; Four drag-line fastening devicess 4 evenly are set on king pile 1, on each auxiliary pile 2, drag-line fastening devices 4 are set respectively simultaneously;
(2) king pile 1 and four auxiliary piles 2 are hauled to infield;
(3) location, infield;
(4) by king pile 1 and four auxiliary pile 2 difference installation in position;
(5) the drag-line fastening devices 4 of usining on king pile 1 is as fixed end, and the drag-line fastening devices 4 on auxiliary pile 2, as stretching end, is carried out pre-stretch-draw to drag-line 3.
Although the above is described preferred embodiment of the present utility model by reference to the accompanying drawings; but the utility model is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment is only 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 invention aim and claim protect, can also make the concrete conversion of a lot of forms, within these all belong to protection domain of the present utility model.

Claims (8)

1. auxiliary single pile wind-powered electricity generation basis, many, a drag-line band edge of a wing, it is characterized in that, comprise that surrounding is evenly equipped with the king pile of many auxiliary piles, each described auxiliary pile enters the frange plate that is provided with of mud pile cutoff outside symmetry, be connected with drag-line between described king pile and each 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. auxiliary single pile wind-powered electricity generation basis, many, a kind of drag-line band according to claim 1 edge of a wing, is characterized in that, the quantity of described drag-line and described auxiliary pile is 3~8.
3. auxiliary single pile wind-powered electricity generation basis, many, a kind of drag-line band according to claim 1 edge of a wing, is characterized in that, described drag-line angle with respect to the horizontal plane is 0 °~60 °.
4. auxiliary single pile wind-powered electricity generation basis, many, a kind of drag-line band according to claim 1 edge of a wing, is characterized in that, described drag-line is wherein a kind of of cable wire, steel wire or steel strand.
5. auxiliary single pile wind-powered electricity generation basis, many, a kind of drag-line band according to claim 1 edge of a wing, is characterized in that, described drag-line fastening devices is positioned on horizontal plane.
6. auxiliary single pile wind-powered electricity generation basis, many, a kind of drag-line band according to claim 1 edge of a wing, is characterized in that, described drag-line fastening devices is a kind of in intermediate plate ground tackle, heading ground tackle, thread anchorage.
7. auxiliary single pile wind-powered electricity generation basis, many, a kind of drag-line band according to claim 1 edge of a wing, is characterized in that, the quantity of described frange plate is 1~6.
8. auxiliary single pile wind-powered electricity generation basis, many, a kind of drag-line band according to claim 1 edge of a wing, is characterized in that, every corresponding drag-line of described auxiliary pile and on it angle between any frange plate be greater than 0 °, be less than 180 °.
CN2013203164733U 2013-05-31 2013-05-31 Guyed flanged multi-auxiliary-pile single-pile wind turbine foundation Expired - Fee Related CN203320542U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103290859A (en) * 2013-05-31 2013-09-11 天津大学 Guyed flanged multi-auxiliary-single-pile wind power foundation and construction method thereof
CN114277857A (en) * 2020-09-28 2022-04-05 冯炬 Bridge flood period anti-floating structure and calculation method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103290859A (en) * 2013-05-31 2013-09-11 天津大学 Guyed flanged multi-auxiliary-single-pile wind power foundation and construction method thereof
CN114277857A (en) * 2020-09-28 2022-04-05 冯炬 Bridge flood period anti-floating structure and calculation method
CN114277857B (en) * 2020-09-28 2024-02-20 冯炬 Anti-floating structure in bridge flood period and calculation method

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Granted publication date: 20131204

Termination date: 20210531