CN103174159A - Single tubular pile base equipment of offshore wind power generating set - Google Patents

Single tubular pile base equipment of offshore wind power generating set Download PDF

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Publication number
CN103174159A
CN103174159A CN2011104393383A CN201110439338A CN103174159A CN 103174159 A CN103174159 A CN 103174159A CN 2011104393383 A CN2011104393383 A CN 2011104393383A CN 201110439338 A CN201110439338 A CN 201110439338A CN 103174159 A CN103174159 A CN 103174159A
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CN
China
Prior art keywords
tube
pile
shear connector
offshore wind
changeover
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Granted
Application number
CN2011104393383A
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Chinese (zh)
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CN103174159B (en
Inventor
朱宏兵
金宝年
于建军
路计庄
孙华东
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Sinovel Wind Group Co Ltd
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Sinovel Wind Group Co Ltd
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Priority to CN201110439338.3A priority Critical patent/CN103174159B/en
Publication of CN103174159A publication Critical patent/CN103174159A/en
Application granted granted Critical
Publication of CN103174159B publication Critical patent/CN103174159B/en
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Abstract

The invention provides single tubular pile base equipment of an offshore wind generating set. The single tubular pile base equipment of the offshore wind generating set comprises a tubular pile, a transition section, circumferential direction shear keys, and a grouting layer, wherein the transition section is sleeved on the upper portion of the tubular pile, the lower portion of the tubular pile can be inserted into a seabed, the grouting layer is filled between the tubular pile and the transition section, and the circumferential direction shear keys are fixed on the tubular pile outer wall and / or the transition section inner wall in a multilayer mode at intervals along the axis direction of the tubular pile and are buried in the grouting layer. Due to the fact that the circumferential direction shear keys are arranged on the tubular pile outer wall and the transition section inner wall and the circumferential direction shear keys are buried in the grouting layer, so that connection strength of the tubular pile and the transition section is increased, vertical force, horizontal bending moment and torsional moment transmitted from the transition section are effectively transmitted to the tubular pile and then to the seabed, and manufacturing cost of basic single tubular pile base equipment of offshore wind generation is reduced.

Description

Offshore wind turbine single tube pile foundation device
Technical field
The present invention relates to Offshore Wind Power Generation Technology, relate in particular to a kind of offshore wind turbine single tube pile foundation device.
Background technology
Along with the aggravation of global energy crisis and ecological deterioration, clean energy resource and regenerative resource more and more are subject to the attention of various countries.In the last few years, wind-powered electricity generation had welcome the fast-developing phase in China, but due to the restriction of the factors such as the hysteresis of the minimizing of land resources, power grid construction and large fan highway transportation difficulty, the development of land wind-powered electricity generation is subject to certain restriction.Provinces and cities are populous, economically developed due to Deposits in Eastern Coastal China, and need for electricity is vigorous, and East Coastal is the abundant district of wind energy resources, and offshore wind farm progressively is subject to the attention of each blower fan manufacturer and genco, and development space is very wide.
The form of structure that the offshore wind generating foundation main is wanted has: concrete gravity type, single tube stake, many pile leaders frame, floatation type etc.
The single tube pile foundation adopts because simple in structure, quick construction are fit to large-scale wind field.The form of structure of single tube stake is occupied absolute share in the construction of European offshore wind park.At home, along with a large amount of introductions of marine guidance piling equipment, estimate that the single tube pile foundation can be widely adopted in marine wind field from now on.
The single tube pile foundation mainly is comprised of two parts: pile tube and changeover portion.During due to marine guidance piling, the vertical precision of pile tube is the installation requirement that can not satisfy wind-driven generator, so the single tube pile foundation all needs changeover portion that blower fan tower barrel and pile tube are coupled together.Leave certain gap between changeover portion and pile tube, can correct within the specific limits the perpendicularity deviation of pile tube.With high-strength grout, the gap is filled after the changeover portion leveling, form grout blanket, to realize being connected of changeover portion and pile tube.
But, because the inwall of the outer wall of grout blanket and pile tube, changeover portion is bonding, bonding strength is lower, needs to increase the jointing length of pile tube and changeover portion, perhaps improve the grouting material strength grade and improve bonding strength, thereby increased the manufacturing cost of single tube pile foundation device.
Summary of the invention
The invention provides a kind of offshore wind turbine single tube pile foundation device, hang down and the high technological deficiency of manufacturing cost in order to solve offshore wind turbine single tube pile foundation device bonding strength of the prior art.
The invention provides a kind of offshore wind turbine single tube pile foundation device, comprise pile tube, changeover portion, circumferential shear connector and grout blanket; Described changeover portion is set in the top of described pile tube, and the bottom of described pile tube can be inserted in sea bed; Described grout blanket is filled between described pile tube and described changeover portion;
Described circumferential shear connector is fixed on described pile tube outer wall and/or described changeover portion inwall and is embedded in described grout blanket along described pile tube axis direction Spaced.
Offshore wind turbine single tube pile foundation device as above, described circumferential shear connector arranges along pile tube axis direction Spaced on pile tube outer wall and changeover portion inwall respectively.
Offshore wind turbine single tube pile foundation device as above, every layer of circumferential shear connector are divided into multistage and adjacent two sections circumferential shear connectors are interspersed along the pile tube axis direction.
Offshore wind turbine single tube pile foundation device as above is positioned at the circumferential shear connector of pile tube outer wall and the circumferential shear connector on the changeover portion inwall and is interspersed along the pile tube axis direction.
Offshore wind turbine single tube pile foundation device as above, every layer of circumferential shear connector is divided into multistage, adjacent two sections circumferential shear connectors are interspersed along the pile tube axis direction, and are positioned at the circumferential shear connector of pile tube outer wall and the circumferential shear connector on the changeover portion inwall also is interspersed along the pile tube axis direction.
Offshore wind turbine single tube pile foundation device as above, the cross section of described circumferential shear connector is arc.
It is identical with the radian of the inwall of the outer wall of described pile tube or changeover portion that offshore wind generating single tube base apparatus as above, every section circumferential shear connector are arc and radian.
Offshore wind turbine single tube pile foundation device as above, described offshore wind turbine single tube pile foundation device also comprises axial shear connector; Described axial shear connector is fixed on described pile tube outer wall and/or changeover portion inwall and between the circumferential shear connector of adjacent two layers.
Offshore wind turbine single tube pile foundation device provided by the invention, owing to being provided with circumferential shear connector on the outer wall of pile tube and changeover portion inwall, this circumferential shear connector is embedded in grout blanket, thereby can improve the bonding strength of pile tube and changeover portion, vertical force, horizontal bending moment and torsional moment that changeover portion is passed over effectively pass to pile tube and pass to sea bed again, and can lower the manufacturing cost of offshore wind power generation basic single tube pile foundation device.
Description of drawings
The structural representation of the offshore wind turbine single tube pile foundation device that Fig. 1 provides for first embodiment of the invention;
Partial enlarged drawing in the offshore wind turbine single tube pile foundation device that Fig. 2 provides for second embodiment of the invention;
Circumferential shear connector on pile tube in the offshore wind turbine single tube pile foundation device that Fig. 3 provides for third embodiment of the invention and the axial schematic diagram of shear connector.
The specific embodiment
With reference to figure 1, the structural representation of the offshore wind turbine single tube pile foundation device that Fig. 1 provides for first embodiment of the invention.
As shown in Figure 1, the offshore wind turbine single tube pile foundation device that provides of the present embodiment comprises pile tube 1, changeover portion 2, circumferentially shear connector 3 and grout blanket 4.Changeover portion 2 is set in the top of pile tube 1, and the bottom of pile tube 1 is used for being inserted in sea bed; Grout blanket 4 is filled between pile tube 1 and changeover portion 2.
Circumferentially shear connector 3 is fixed on pile tube 1 outer wall and changeover portion 2 inwalls and is embedded in grout blanket 4 along pile tube 1 axis direction Spaced.
Particularly, every layer of circumferential shear connector 3 can be the ring-type overall structure, can adopt bending wire to be shaped, and circumferentially the cross section of shear connector 3 can have any shape, as trapezoidal or rectangle etc.Circumferentially shear connector 3 can adopt the material identical with changeover portion 2 with pile tube 1, as steel etc.
During installation, can circumferential shear connector 3 be fixed on by welding manner on the outer wall of pile tube 1 and on the inwall of changeover portion, fill grout blanket 4 in the gap of pile tube 1 and changeover portion 2, grout blanket 4 is buried circumferential shear connector 3 within it underground.In addition, the top of changeover portion 2 is equipped with flange 5, and flange 5 is used for being connected with the tower cylinder of wind power generating set, and this offshore wind power generation basic single tube pile foundation device can provide the base support effect for offshore wind turbine.
The offshore wind power generation basic single tube pile foundation device that the present embodiment provides, owing to being provided with circumferential shear connector 3 on the outer wall of pile tube 1 and changeover portion 2 inwalls, this circumferential shear connector 3 is embedded in grout blanket, thereby can improve the bonding strength of pile tube 1 and changeover portion 2, vertical force, horizontal bending moment and torsional moment that changeover portion 2 is passed over effectively pass to pile tube 1 and pass to sea bed again, and can lower the manufacturing cost of offshore wind power generation basic single tube pile foundation device.
Partial enlarged drawing in the offshore wind turbine single tube pile foundation device that provides for second embodiment of the invention referring to figs. 2 and 3, Fig. 2, after having illustrated that changeover portion 2 and pile tube 1 are sheathed, the shear connector 3 between being located at both and the structural relation of grout blanket 4; Circumferential shear connector on pile tube in the offshore wind turbine single tube pile foundation device that Fig. 3 provides for third embodiment of the invention and the axial schematic diagram of shear connector.
As shown in Figures 2 and 3, on the basis of first embodiment of the invention, can also be improved further circumferential shear connector 3, every layer of circumferential shear connector 3 arranges along pile tube 1 axis direction Spaced on pile tube 1 outer wall and changeover portion 2 inwalls respectively.
Circumferentially the concrete set-up mode of shear connector 3 can have multiplely, and a kind of mode is, every layer of circumferential shear connector 3 is divided into multistage and adjacent two sections circumferential shear connectors 3 are interspersed along pile tube 1 axis direction.
On the basis of the arrangement of upper a kind of circumferential shear connector 3, be positioned at the circumferential shear connector 3 of pile tube 1 outer wall and be interspersed along pile tube 1 axis direction with circumferential shear connector 3 on changeover portion 2 inwalls.
In addition, every layer of circumferential shear connector 3 is divided into multistage, and adjacent two sections circumferential shear connectors 3 are interspersed along pile tube 1 axis direction, and is positioned at the circumferential shear connector 3 of pile tube 1 outer wall and also is interspersed along pile tube 1 axis direction with circumferential shear connector 3 on changeover portion 2 inwalls.
Adopt the multiple arrangement of above-mentioned circumferential shear connector 3, when welding, can reduce the difficulty of processing of circumferential shear connector 3 when bending forming, and can reduce to weld difficulty, raising welding quality, also reduce the welding stress and distortion amount of the wall body generation of pile tube 1 and changeover portion 2.
In addition, circumferentially the cross section of shear connector 3 can be arc.That is to say, circumferentially shear connector 3 contacts for cambered surface with grout blanket 4, when offshore wind turbine under height circulates the fatigue load effect in width, high cycle, be beneficial to the compressive stress that reduces circumferential shear connector 3 and grout blanket 4 generations, compressive stress can evenly be transmitted at circumferential shear connector 3 peripheries, to avoid improving safety because the phenomenon of part crushing occurs over the ultimate bearing capacity of grout blanket 4 the local sharp-pointed compressive stress of locating of circumferential shear connector 3.
Every section circumferential shear connector 3 adopts the dihedral angle welding seams to be welded on the outer wall of pile tube 1 and on the inwall of changeover portion 2, can improve the weld strength of circumferential shear connector 3.
In addition, it is identical with the radian of the inwall of the outer wall of pile tube 1 or changeover portion 2 that every section circumferential shear connector 3 is arc and radian, to improve the bonding strength of circumferential shear connector 3 and pile tube 1 and changeover portion 2.
As shown in Figure 3, on the basis of the above embodiment of the present invention, offshore wind turbine single tube pile foundation device also comprises axial shear connector 6; Axially shear connector 6 is fixed on pile tube 1 outer wall and/or changeover portion 2 inwalls and between the circumferential shear connector 3 of adjacent two layers.
Offshore wind turbine is in running, especially under the extreme wind speeds state, can produce larger torsional moment, and circumferentially shear connector 3 may be influenced aspect effective absorption torsional moment, thereby can increase the torsional moment that the absorptive transition sections pass over by axial shear connector 6, be beneficial to and avoid that torsional moment is excessive causes damage to offshore wind turbine single tube pile foundation device.
Need to prove, because torsional moment is little than overturning moment, thereby axially shear connector 6 can suitably be arranged according to the actual loading situation.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of various embodiments of the present invention technical scheme.

Claims (8)

1. an offshore wind turbine single tube pile foundation device, is characterized in that, comprises pile tube, changeover portion, circumferential shear connector and grout blanket; Described changeover portion is set in the top of described pile tube, and the bottom of described pile tube can be inserted in sea bed; Described grout blanket is filled between described pile tube and described changeover portion;
Described circumferential shear connector is fixed on described pile tube outer wall and/or described changeover portion inwall and is embedded in described grout blanket along described pile tube axis direction Spaced.
2. offshore wind turbine single tube pile foundation device according to claim 1, is characterized in that, described circumferential shear connector arranges along pile tube axis direction Spaced on pile tube outer wall and changeover portion inwall respectively.
3. offshore wind turbine single tube pile foundation device according to claim 1 and 2, is characterized in that, every layer of circumferential shear connector is divided into multistage and adjacent two sections circumferential shear connectors are interspersed along the pile tube axis direction.
4. offshore wind turbine single tube pile foundation device according to claim 3, is characterized in that, is positioned at the circumferential shear connector of pile tube outer wall and the circumferential shear connector on the changeover portion inwall and is interspersed along the pile tube axis direction.
5. offshore wind turbine single tube pile foundation device according to claim 2, it is characterized in that, every layer of circumferential shear connector is divided into multistage, adjacent two sections circumferential shear connectors are interspersed along the pile tube axis direction, and are positioned at the circumferential shear connector of pile tube outer wall and the circumferential shear connector on the changeover portion inwall also is interspersed along the pile tube axis direction.
6. offshore wind turbine single tube pile foundation device according to claim 1 and 2, is characterized in that, the cross section of described circumferential shear connector is arc.
7. offshore wind generating single tube base apparatus according to claim 1 and 2, is characterized in that, it is identical with the radian of the inwall of the outer wall of described pile tube or changeover portion that every section circumferential shear connector is arc and radian.
8. offshore wind turbine single tube pile foundation device according to claim 1 and 2, is characterized in that, described offshore wind turbine single tube pile foundation device also comprises axial shear connector; Described axial shear connector is fixed on described pile tube outer wall and/or changeover portion inwall and between the circumferential shear connector of adjacent two layers.
CN201110439338.3A 2011-12-23 2011-12-23 Offshore wind turbine single pipe pile foundation device Active CN103174159B (en)

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CN103174159A true CN103174159A (en) 2013-06-26
CN103174159B CN103174159B (en) 2015-11-25

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112064663A (en) * 2020-09-15 2020-12-11 张碧杰 Off-shore wind power single-pile foundation structure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85104325A (en) * 1985-06-07 1986-12-03 竹中工务店有限株式会社 On the seabed, build the method for pier
JP2001164565A (en) * 1999-12-10 2001-06-19 Heihachi Hayashi Stress dispersing pile
JP3735813B2 (en) * 2002-02-28 2006-01-18 平八 林 Seismic pile group structure
CN201506979U (en) * 2009-09-14 2010-06-16 中国水利水电科学研究院 Grouting connection structure for pile foundation and jacket leg of offshore wind turbine
CN201915419U (en) * 2010-12-24 2011-08-03 中国水电顾问集团华东勘测设计研究院 Single-pile foundation structure with stabilizing wings for offshore wind turbine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85104325A (en) * 1985-06-07 1986-12-03 竹中工务店有限株式会社 On the seabed, build the method for pier
JP2001164565A (en) * 1999-12-10 2001-06-19 Heihachi Hayashi Stress dispersing pile
JP3735813B2 (en) * 2002-02-28 2006-01-18 平八 林 Seismic pile group structure
CN201506979U (en) * 2009-09-14 2010-06-16 中国水利水电科学研究院 Grouting connection structure for pile foundation and jacket leg of offshore wind turbine
CN201915419U (en) * 2010-12-24 2011-08-03 中国水电顾问集团华东勘测设计研究院 Single-pile foundation structure with stabilizing wings for offshore wind turbine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112064663A (en) * 2020-09-15 2020-12-11 张碧杰 Off-shore wind power single-pile foundation structure

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