CN102619227B - Grouting device, assembly and grouting method for single pipe pile foundation of offshore wind turbine generating set - Google Patents

Grouting device, assembly and grouting method for single pipe pile foundation of offshore wind turbine generating set Download PDF

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Publication number
CN102619227B
CN102619227B CN201110034097.4A CN201110034097A CN102619227B CN 102619227 B CN102619227 B CN 102619227B CN 201110034097 A CN201110034097 A CN 201110034097A CN 102619227 B CN102619227 B CN 102619227B
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CN
China
Prior art keywords
grouting
changeover
steel pipe
pipe pile
wind turbine
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CN201110034097.4A
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Chinese (zh)
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CN102619227A (en
Inventor
朱宏兵
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华锐风电科技(江苏)有限公司
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Priority to CN201110034097.4A priority Critical patent/CN102619227B/en
Publication of CN102619227A publication Critical patent/CN102619227A/en
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Publication of CN102619227B publication Critical patent/CN102619227B/en

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Abstract

The invention provides a grouting device, an assembly and a grouting method for a single pipe pile foundation of an offshore wind turbine generating set. The grouting device comprises a grouting pipe and a plugging ring, the inner diameter of a first end of the plugging ring is less than that of a second end of the plugging ring, the plugging ring is arranged between a transition section and a steel pipe pile which are mutually sleeved, the first end is used for butting against the outer wall of the steel pipe pile in sealed mode, and the second end is used for butting against the inner wall of the transition section in sealed mode. The single pipe pile assembly comprises the transition section, the steel pipe pile and a grouting layer arranged between the transition section and the steel pipe pile, a plugging ring is arranged between the transition section and the steel pipe pile, and the grouting layer is formed by filling slurry between the transition section and the steel pipe pile. The grouting device, the single pipe pile assembly and the grouting method for the single pipe pile foundation of the offshore wind turbine generating set overcome the shortcoming that an existing grouting device is easy in slurry loss and leakage, improve grouting quality and safety coefficient.

Description

Offshore wind turbine single tube pile foundation provisions for grouting, assembly and grouting method

Technical field

The present invention relates to marine pile tube Building technology, relate in particular to a kind of offshore wind turbine single tube pile foundation provisions for grouting, single tube stake assembly and grouting method.

Background technology

Along with the aggravation of global energy crisis and ecological deterioration, clean energy resource and regenerative resource are more and more 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 factor such as hysteresis and large fan highway transportation difficulty of the minimizing of land resources, power grid construction, the development of land wind-powered electricity generation is subject to certain restriction.Because Deposits in Eastern Coastal China provinces and cities are populous, economically developed, need for electricity is vigorous, and East Coastal is that wind energy resources enriches district, and offshore wind farm is progressively subject to the attention of each blower fan manufacturer and genco, and development space is very wide.

The form of structure that offshore wind generating foundation main is wanted has: concrete gravity type, single tube stake, many pile leaders frame, floatation type etc.

Single tube pile foundation adopts because simple in structure, quick construction are applicable to large-scale wind field.In the construction of European offshore wind park, the form of structure of single tube stake is occupied absolute share.At home, along with a large amount of introductions of marine guidance piling equipment, estimate that single tube pile foundation can be widely adopted in marine wind field from now on.

Single tube pile foundation is mainly made up of two parts: steel pipe pile and changeover portion.During due to marine guidance piling, the vertical precision of steel pipe pile is the installation requirement that can not meet wind-driven generator, so single tube pile foundation all needs changeover portion that blower fan tower barrel and steel pipe pile are coupled together.Between changeover portion and steel pipe pile, leave certain gap, can correct within the specific limits the perpendicularity deviation of steel pipe pile.After changeover portion leveling, with high-strength grout, gap is filled, to realize being connected of changeover portion and steel pipe pile.

Existing provisions for grouting adopts the material such as sealing compound or foam rods to realize the shutoff work before grouting conventionally, by sealing compound or foam rods extrusion packing in the gap of changeover portion and steel pipe pile, the pressure that this sealing means bears is less, easily fail in compression in filling process, and rely on frictional force to be fixed in the gap of changeover portion and steel pipe pile, easily lost efficacy, cause that grouting material running pulp, spillage or seawater are counter fills with, after sea water intrusion grouting material, can have a strong impact on the intensity of grouting material, cause a hidden trouble safely to architecture quality.

Existing provisions for grouting is that grouting material is injected by top, and because the space between changeover portion and steel pipe pile is less, the grouting degree of depth is very large, and slurry setting rate is fast, so be easy to form cavity, causes grouting leakiness.After grouting finishes, because grouting is highly large, if termination of pumping immediately after being in the milk, grouting material can backflow in grout pipe immediately, causes not in place, the leakiness of grouting.If do not stop immediately grout pump, make to keep certain pressure in grout pipe, can make the grouting material in grout pipe solidify generation gambling pipe, cause waste.In addition, after grout pump stops, pressure is not definitely constant, has fluctuation within a narrow range, can make grouting material in solidifying by disturbance yet, affects grouting material intensity.

Summary of the invention

The invention provides a kind of offshore wind turbine single tube pile foundation provisions for grouting, single tube stake assembly and grouting method, to solve the defect of the easy running pulp of existing provisions for grouting, spillage, improved grouting quality and safety factor.

The invention provides a kind of offshore wind turbine single tube pile foundation provisions for grouting, comprise Grouting Pipe, wherein, also comprise:

Shutoff circle, the internal diameter of the first end of described shutoff circle is less than the internal diameter of the second end, described shutoff circle is for being arranged between mutually sheathed changeover portion and steel pipe pile, be set in the outside of described steel pipe pile, the first end of described shutoff circle is for sealing the outer wall of conflicting at steel pipe pile, and the second end of described shutoff circle is for sealing the inwall of conflicting at changeover portion.

Offshore wind turbine single tube pile foundation provisions for grouting as above, wherein:

The longitudinal cross-section of described shutoff circle is shaped as fold-line-shaped, and the longitudinal cross-section shape of described first end and the second end is flat level.

Offshore wind turbine single tube pile foundation provisions for grouting as above, wherein: described shutoff circle is rubber shutoff circle.

Offshore wind turbine single tube pile foundation provisions for grouting as above, wherein, also comprises:

Rubber ball sealer, the diameter of described rubber ball sealer is greater than on changeover portion the diameter of the grouting port for connecting described Grouting Pipe.

Offshore wind turbine single tube pile foundation provisions for grouting as above, wherein, also comprises:

Stay cord, is fixedly embedded in described rubber ball sealer.

The invention provides a kind of offshore wind turbine single tube stake assembly, comprise the grout blanket between changeover portion, steel pipe pile and described changeover portion and steel pipe pile, wherein:

In described grout blanket, be provided with shutoff circle, the internal diameter of the first end of described shutoff circle is less than the internal diameter of the second end, described shutoff snare is located at the outside of described steel pipe pile, the first end sealing of described shutoff circle is conflicted on the outer wall of steel pipe pile, and the second end sealing of described shutoff circle is conflicted on the inwall of changeover portion.

Offshore wind turbine single tube stake assembly as above, wherein:

The first end of described shutoff circle is positioned at the top of the second end, and described the second end is fixed on described changeover portion.

Offshore wind turbine single tube stake assembly as above, is characterized in that:

The longitudinal cross-section of described shutoff circle is shaped as fold-line-shaped, and the longitudinal cross-section shape of described first end and the second end is flat level.

Offshore wind turbine single tube stake assembly as above, wherein:

On the wall of described changeover portion, offer the grouting port for connecting Grouting Pipe, described grouting port is arranged on the lower end of described changeover portion, and is positioned at the top of described shutoff circle the second end.

Offshore wind turbine single tube stake assembly as above, wherein: described grouting port place is provided with the adpting flange for being fixedly connected with Grouting Pipe.

Offshore wind turbine single tube stake assembly as above, wherein: the diameter of described grouting port is less than the outlet diameter of Grouting Pipe.

Offshore wind turbine single tube stake assembly as above, wherein, also comprises: shelves frame, is fixedly installed on outside described grouting port.

The invention provides a kind of offshore wind turbine single tube pile foundation grouting method, wherein, comprising:

The changeover portion of offshore wind turbine single tube stake is set in to the outside of steel pipe pile, and shutoff circle is set between changeover portion and steel pipe pile, the internal diameter of the first end of described shutoff circle is less than the internal diameter of the second end, described shutoff snare is located at the outside of described steel pipe pile, the first end sealing of described shutoff circle is conflicted on the outer wall of steel pipe pile, and the second end sealing of described shutoff circle is conflicted on the inwall of changeover portion;

Form grout blanket to pouring into slurry between described changeover portion and steel pipe pile.

Offshore wind turbine single tube pile foundation grouting method as above, wherein, is set in the changeover portion of offshore wind turbine single tube stake in the outside of steel pipe pile, and shutoff circle is set between changeover portion and steel pipe pile comprises:

The second end of shutoff circle is fixed on to the lower end of described changeover portion, the first end of described shutoff circle is positioned at the top of described the second end;

The changeover portion that is fixed with shutoff circle is set in to the outside of steel pipe pile.

Offshore wind turbine single tube pile foundation grouting method as above, wherein, comprises to pouring into slurry formation grout blanket between described changeover portion and steel pipe pile:

Grouting Pipe is fixedly connected on to grouting port place, and described grouting port is opened on the wall of described changeover portion, is arranged on the lower end of described changeover portion, and is positioned at the top of described shutoff circle the second end;

Form grout blanket by grouting port to pouring into slurry between described changeover portion and steel pipe pile.

Offshore wind turbine single tube pile foundation grouting method as above, wherein, comprises to pouring into slurry formation grout blanket between described changeover portion and steel pipe pile by grouting port:

Between described changeover portion and steel pipe pile, pour into slurry by grouting port;

Reach while imposing a condition judging grouting, put into rubber ball sealer from the entrance of Grouting Pipe, the diameter of described rubber ball sealer is greater than the diameter of described grouting port;

Reach and set when threshold value judging Grouting Pipe internal pressure, close grouting pump and stop slip casting.

Offshore wind turbine single tube pile foundation grouting method as above, wherein, after forming grout blanket, also comprises:

Take out described rubber ball sealer by the stay cord being fixedly embedded in described rubber ball sealer.

Offshore wind turbine single tube pile foundation provisions for grouting provided by the invention, single tube stake assembly and grouting method are by arranging shutoff circle, solve the defect of the easy running pulp spillage of existing provisions for grouting, single tube stake assembly is more solid and reliable simultaneously, has improved the safety using.

Accompanying drawing explanation

Shutoff coil structures schematic diagram in the offshore wind turbine single tube pile foundation provisions for grouting that Fig. 1 provides for the embodiment of the present invention one.

A grouting mouthful partial structurtes schematic diagram in the offshore wind turbine single tube pile foundation provisions for grouting that Fig. 2 provides for the embodiment of the present invention one.

A grouting mouthful partial structurtes schematic diagram in the offshore wind turbine single tube pile foundation provisions for grouting that Fig. 3 provides for the embodiment of the present invention two.

The offshore wind turbine single tube stake assembly structure schematic diagram that Fig. 4 provides for the embodiment of the present invention three.

The flow chart of the offshore wind turbine single tube pile foundation grouting method that Fig. 5 provides for the embodiment of the present invention four.

The flow chart of the offshore wind turbine single tube pile foundation grouting method that Fig. 6 provides for the embodiment of the present invention five.

Reference numeral:

1-shutoff circle; 2-first end; 3-shutoff circle main body;

4-the second end; 5-changeover portion; 6-steel pipe pile;

7-grout blanket; 8-Grouting Pipe; 9-seawater;

10-sea bed; 11-rubber ball sealer; 12-adpting flange;

13-basic internal; 14 bases are outside; 15-grouting port;

16-fixed head.

The specific embodiment

For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.

Embodiment mono-

The structural representation of shutoff circle in the offshore wind turbine single tube pile foundation provisions for grouting that Fig. 1 provides for the embodiment of the present invention one, a grouting mouthful partial structurtes schematic diagram in the offshore wind turbine single tube pile foundation provisions for grouting that Fig. 2 provides for the embodiment of the present invention one.The embodiment of the present invention one provides a kind of offshore wind turbine single tube pile foundation provisions for grouting, comprise Grouting Pipe 8, wherein, also comprise: shutoff circle 1, the internal diameter of the first end 2 of shutoff circle 1 is less than the internal diameter of the second end 4, and shutoff circle 1 is for being arranged between mutually sheathed changeover portion 5 and steel pipe pile 6, as shown in Figure 2, be set in the outside of steel pipe pile 6, its first end 2 is for sealing the outer wall of conflicting at steel pipe pile 6, and the second end 4 is for sealing the inwall of conflicting at changeover portion 5.In said structure, shutoff circle 1 is kept apart gap and seawater between changeover portion 5 and steel pipe pile 6, plays the effect of water-tight in filling process.

On the basis of above-described embodiment, preferably shutoff circle 1 is set to longitudinal cross-section and is shaped as fold-line-shaped, the longitudinal cross-section shape of first end 2 and the second end 4 is flat level.Above-mentioned shape can be tighter the inwall of laminating changeover portion 5 and the outer wall of steel pipe pile 6, simultaneously flat segments the path of leaking water that has extended seawater is set, make plugging effect better.

Further, the material selection rubber of shutoff circle 1, the good springiness of rubber shutoff circle can be tightened in the time being enclosed within steel pipe pile 6 outer wall, strengthens sealed waterproof effect.

The offshore wind turbine single tube pile foundation provisions for grouting that the embodiment of the present invention provides utilizes the sealing function of shutoff circle effectively to prevent spillage and the running pulp phenomenon of filling process, and prevention inwelling enters in slurry to affect pulp strength, makes structure safety and reliability.

Embodiment bis-

A grouting mouthful partial structurtes schematic diagram in the offshore wind turbine single tube pile foundation provisions for grouting that Fig. 3 provides for the embodiment of the present invention two.The embodiment of the present invention two provides a kind of offshore wind turbine single tube pile foundation provisions for grouting, comprises Grouting Pipe 8 and shutoff circle 1, wherein also comprises rubber ball sealer 11, and the diameter of rubber ball sealer 11 is greater than the diameter of grouting port 15 on changeover portion 5.In the time of grouting the work is nearly finished, when pump pressure reaches a setting value, rubber ball sealer 11 is put into Grouting Pipe 8, make rubber ball sealer 11 trail grouting material and arrive grouting port 15 via Grouting Pipe 8.Because the diameter of rubber ball sealer 11 is greater than the diameter of grouting port 15 on changeover portion 5, rubber ball sealer 11 will be stuck in grouting port 15 places, by grouting material shutoff in grout blanket 7, rubber ball sealer 11 also can be cleaned out the grouting material in Grouting Pipe 8 simultaneously, used convenient next time, the application life of also having improved Grouting Pipe 8.Grouting finishes rear dismounting Grouting Pipe 8, takes out rubber ball sealer 11.

Take out for convenience rubber ball sealer 11, be preferably also provided with stay cord, be embedded in rubber ball sealer 11.

The offshore wind turbine single tube pile foundation provisions for grouting that the embodiment of the present invention provides by rubber ball sealer by shutoff stable grouting material in grout blanket, avoid grouting material to be disturbed in hardening process, clear up Grouting Pipe simultaneously, reduced the waste of Grouting Pipe.

Embodiment tri-

The offshore wind turbine single tube stake assembly structure schematic diagram that Fig. 4 provides for the embodiment of the present invention three.The embodiment of the present invention provides a kind of offshore wind turbine single tube stake assembly, referring to Fig. 1 and Fig. 3, single tube stake assembly comprises the grout blanket 7 between changeover portion 5, steel pipe pile 6 and changeover portion 5 and steel pipe pile 6, wherein: in grout blanket 7, be provided with shutoff circle 1, the internal diameter of the first end 2 of shutoff circle 1 is less than the internal diameter of the second end 4, shutoff circle 1 is set in the outside of steel pipe pile 6, and its first end 2 sealings are conflicted on the outer wall of steel pipe pile 6, and the second end 4 sealings are conflicted on the inwall of changeover portion 5.

The first end 2 of shutoff circle 1 is positioned at the top of the second end 4, the second end 4 can be bolted on changeover portion 5, the mode that the second end 4 is fixed on changeover portion 5 can have multiple, as shown in Figure 3, specifically changeover portion 5 lower ends are provided with fixed head 16 to example, can hold from below the second end 4, the second end 4 is fixedly connected with changeover portion 5 with backing plate by bolt simultaneously, thereby make in filling process, shutoff circle 1 can not move, solid and reliable.The longitudinal cross-section of shutoff circle 1 is shaped as fold-line-shaped, and the longitudinal cross-section shape of first end 2 and the second end 4 is flat level.Above-mentioned shape can be tighter the inwall of laminating changeover portion 5 and the outer wall of steel pipe pile 6, simultaneously flat segments the path of leaking water that has extended seawater is set, make plugging effect better.

Further, offer grouting port 15 on the wall of changeover portion 5, grouting port 15 is arranged on the lower end of changeover portion 5, and is positioned at the top of shutoff circle 1 second end 4.Existing grouting technique is the upper end that grouting port 15 is arranged on to changeover portion 5, due to grouting path length and dark, easily produces cavity, grouting port 15 is arranged on to the lower end of changeover portion 5, has effectively improved this situation.

Further, grouting port 15 places are provided with adpting flange 12, for being fixedly connected with Grouting Pipe 8.

Further, the diameter that grouting port 15 is set is less than the outlet diameter of Grouting Pipe 8, both can prevent that air from entering formation cavity, and in the time of application rubber ball sealer 11 provided by the invention, grouting port 15 can block rubber ball sealer 11 simultaneously.

Further, grouting port 15 is outside equipped with a grade frame, and shelves frame can be specifically the cross shelves frame blocking at grouting port 15 places, in the time of application rubber ball sealer 11 provided by the invention, can prevent that pumping pressure is excessive, and rubber ball sealer 11 is squeezed into grouting port 15.

The offshore wind turbine single tube stake assembly that the embodiment of the present invention provides has improved prior art by the easy defect that forms cavity of upper end injection by grouting port being arranged on to the lower end of changeover portion, effectively prevent the phenomenon of spillage running pulp in filling process by shutoff circle is set, make single tube stake assembly structure more solid and reliable.

Embodiment tetra-

The flow chart of the offshore wind turbine single tube pile foundation grouting method that Fig. 5 provides for the embodiment of the present invention four, the method can adopt offshore wind turbine single tube pile foundation provisions for grouting provided by the present invention to implement, to form offshore wind turbine single tube stake assembly provided by the present invention.The method specifically comprises:

Step 510, the changeover portion 5 of offshore wind turbine single tube stake assembly is set in to the outside of steel pipe pile 6, and between changeover portion 5 and steel pipe pile 6, shutoff circle 1 is set, the internal diameter of the first end 2 of shutoff circle 1 is less than the internal diameter of the second end 4, shutoff circle 1 is set in the outside of described steel pipe pile 6, its first end 2 sealings are conflicted on the outer wall of steel pipe pile 6, and the second end 4 sealings are conflicted on the inwall of changeover portion 5;

Step 520, between changeover portion 5 and steel pipe pile 6, pour into slurry form grout blanket 7.

Shutoff circle 1 arrange can insulating sea water pour in down a chimney, effectively prevented the generation of running pulp spillage phenomenon, guaranteed the reliability of grouting.

On the basis of above-described embodiment, the changeover portion 5 of offshore wind turbine single tube stake assembly is set in to the outside of steel pipe pile 6, and between changeover portion 5 and steel pipe pile 6, shutoff circle 1 is set and specifically can comprises:

The lower end that the second end 4 of shutoff circle 1 is fixed on to changeover portion 5, the first end 2 of shutoff circle 1 is positioned at the top of the second end 4;

The changeover portion 5 that is fixed with shutoff circle 1 is set in to the outside of steel pipe pile 6.

The mode that the second end 4 of shutoff circle 1 can be bolted is fixed on the lower end of changeover portion 5, but be not limited to this, the first end of shutoff circle 12 can be arranged on to the top of the second end 4 simultaneously, again the changeover portion 5 that is fixed with shutoff circle 1 is set in to the outside of steel pipe pile 6, to implement follow-up grouting work.

Further, comprise to pouring into slurry formation grout blanket 7 between changeover portion 5 and steel pipe pile 6:

Grouting Pipe 8 is fixedly connected on to grouting port 15 places, and grouting port 15 is opened in the lower end of the wall of changeover portion 5, and is positioned at the top of shutoff circle 1 second end 4;

Form grout blanket 7 by grouting port 15 to pouring into slurry between changeover portion 5 and steel pipe pile 6.

The arranging of above-mentioned grouting port 15 positions can overcome prior art is from up to down in the milk, due to the long defect that easily produces cavity in path.

Further, specifically comprise to pouring into slurry formation grout blanket 7 between changeover portion 5 and steel pipe pile 6 by grouting port 15:

Between changeover portion 5 and steel pipe pile 6, pour into slurry by grouting port 15;

Reach while imposing a condition judging grouting, put into rubber ball sealer 11 from the entrance of Grouting Pipe 8, the diameter of rubber ball sealer 11 is greater than the diameter of grouting port 15.

It is by the pressure setting of grouting pump one threshold value that technique scheme what is called imposes a condition, be greater than this threshold value and represent that slurry fills, slurry pressure is stable, now can termination of pumping to stop continuing grouting, can adopt control appliance to judge to the judgement of grouting pump pressure, also can artificial judgment, in the time of grouting the work is nearly finished, be pump pressure while reaching above-mentioned threshold value, rubber ball sealer 11 is put into Grouting Pipe 8, make rubber ball sealer 11 trail grouting material and arrive grouting port 15 via Grouting Pipe 8.Because the diameter of rubber ball sealer 11 is greater than the diameter of grouting port 15 on changeover portion 5, rubber ball sealer 11 will be stuck in grouting port 15 places, by grouting material shutoff in grout blanket 7, rubber ball sealer 11 also can be cleaned out the grouting material in Grouting Pipe 8 simultaneously, used convenient next time, the application life of also having improved Grouting Pipe 8.

Reach and set when threshold value judging Grouting Pipe 8 internal pressures, close grouting pump and stop slip casting.

Application of rubber ball sealer 11 can be after grouting pump stops, and makes stable the remaining in grout blanket of grouting material, prevents that grouting material is by disturbance, thereby has improved the intensity of grout blanket 7.

Further, after forming grout blanket 7, also specifically comprise:

Take out rubber ball sealer 11 by the stay cord being fixedly embedded in rubber ball sealer 11.After slurry solidifies, for preventing that rubber ball sealer 11 is difficult to take out, be provided with stay cord, use more convenient effective.

The offshore wind turbine single tube pile foundation grouting method that the embodiment of the present invention provides has improved grout blanket in existing engineering and has been prone to cavity, the easy running pulp spillage of filling process, and grouting finishes disposed slurry unsettled defect, improve intensity and the safety in utilization of grout blanket.

Embodiment five

The single tube pile foundation grouting method flow chart that Fig. 6 provides for the embodiment of the present invention five.The embodiment of the present invention five provides a kind of preferred single tube pile foundation grouting method, and its concrete steps are as follows:

Step 610, the changeover portion 5 of offshore wind turbine single tube stake assembly is set in to the outside of steel pipe pile 6, and between changeover portion 5 and steel pipe pile 6, shutoff circle 1 is set;

Step 620, the second end 4 of shutoff circle 1 is fixed on to the lower end of changeover portion 5, the first end 2 of shutoff circle 1 is positioned at the top of the second end 4;

Step 630, the changeover portion 5 that is fixed with shutoff circle 1 is set in to the outside of steel pipe pile 6, its first end 2 sealings are conflicted on the outer wall of steel pipe pile 6, and the second end 4 sealings are conflicted on the inwall of changeover portion 5;

Gap between step 640, inspection changeover portion 5 and steel pipe pile 6, guarantees that grouting thickness meets the requirements, and discharges the seawater in steel pipe pile 6 with water pump, sets up grouting operation platform.With tap water, the gap to be in the milk between changeover portion 5 and steel pipe pile 6 is rinsed well repeatedly, the remaining water after flushing is discharged from Grouting Pipe 8;

Step 650, Grouting Pipe 8 is fixedly connected on to grouting port 15 places, grouting port 15 is opened in the lower end of the wall of changeover portion 5, and is positioned at the top of shutoff circle 1 second end 4;

Step 660, between changeover portion 5 and steel pipe pile 6, pour into slurry by grouting port 15;

Step 670, reach while imposing a condition judging grouting, put into rubber ball sealer 11 from the entrance of Grouting Pipe 8, the diameter of rubber ball sealer 11 is greater than the diameter of grouting port 15;

Step 680, reach and set when threshold value judging Grouting Pipe 8 internal pressures, close grouting pump and stop slip casting.

After step 690, slurry solidify, take out rubber ball sealer 11 by the stay cord being fixedly embedded in rubber ball sealer 11.

The single tube pile foundation grouting method that the embodiment of the present invention provides has solved the defect of slurry pressure shakiness in the easy running pulp spillage of existing grouting method and filling process, the water-tight and the safety that have improved grout blanket.

Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (15)

1. an offshore wind turbine single tube pile foundation provisions for grouting, comprises Grouting Pipe, it is characterized in that, also comprises:
Shutoff circle, the internal diameter of the first end of described shutoff circle is less than the internal diameter of the second end, described shutoff circle is for being arranged between mutually sheathed changeover portion and steel pipe pile, be set in the outside of described steel pipe pile, the first end of described shutoff circle is for sealing the outer wall of conflicting at steel pipe pile, the second end of described shutoff circle is for sealing the inwall of conflicting at changeover portion, and the longitudinal cross-section of described shutoff circle is shaped as fold-line-shaped, and the longitudinal cross-section shape of described first end and the second end is flat level.
2. offshore wind turbine single tube pile foundation provisions for grouting according to claim 1, is characterized in that: described shutoff circle is rubber shutoff circle.
3. offshore wind turbine single tube pile foundation provisions for grouting according to claim 1, is characterized in that, also comprises:
Rubber ball sealer, the diameter of described rubber ball sealer is greater than on changeover portion the diameter of the grouting port for connecting described Grouting Pipe.
4. offshore wind turbine single tube pile foundation provisions for grouting according to claim 3, is characterized in that, also comprises:
Stay cord, is fixedly embedded in described rubber ball sealer.
5. an offshore wind turbine single tube stake assembly, comprises the grout blanket between changeover portion, steel pipe pile and described changeover portion and steel pipe pile, it is characterized in that:
In described grout blanket, be provided with shutoff circle, the internal diameter of the first end of described shutoff circle is less than the internal diameter of the second end, described shutoff snare is located at the outside of described steel pipe pile, the first end sealing of described shutoff circle is conflicted on the outer wall of steel pipe pile, the second end sealing of described shutoff circle is conflicted on the inwall of changeover portion, the longitudinal cross-section of described shutoff circle is shaped as fold-line-shaped, and the longitudinal cross-section shape of described first end and the second end is flat level.
6. offshore wind turbine single tube stake assembly according to claim 5, is characterized in that:
The first end of described shutoff circle is positioned at the top of the second end, and described the second end is fixed on described changeover portion.
7. offshore wind turbine single tube stake assembly according to claim 6, is characterized in that:
On the wall of described changeover portion, offer the grouting port for connecting Grouting Pipe, described grouting port is arranged on the lower end of described changeover portion, and is positioned at the top of described shutoff circle the second end.
8. offshore wind turbine single tube stake assembly according to claim 7, is characterized in that: described grouting port place is provided with the adpting flange for being fixedly connected with Grouting Pipe.
9. offshore wind turbine single tube stake assembly according to claim 7, is characterized in that: the diameter of described grouting port is less than the outlet diameter of Grouting Pipe.
10. offshore wind turbine single tube stake assembly according to claim 7, is characterized in that, also comprises: shelves frame, is fixedly installed on outside described grouting port.
11. 1 kinds of offshore wind turbine single tube pile foundation grouting methods, is characterized in that, comprising:
The changeover portion of offshore wind turbine single tube stake assembly is set in to the outside of steel pipe pile, and shutoff circle is set between changeover portion and steel pipe pile, the internal diameter of the first end of described shutoff circle is less than the internal diameter of the second end, described shutoff snare is located at the outside of described steel pipe pile, the first end sealing of described shutoff circle is conflicted on the outer wall of steel pipe pile, the second end sealing of described shutoff circle is conflicted on the inwall of changeover portion, the longitudinal cross-section of described shutoff circle is shaped as fold-line-shaped, and the longitudinal cross-section shape of described first end and the second end is flat level;
Form grout blanket to pouring into slurry between described changeover portion and steel pipe pile.
12. offshore wind turbine single tube pile foundation grouting methods according to claim 11, is characterized in that, the changeover portion of offshore wind turbine single tube stake are set in to the outside of steel pipe pile, and shutoff circle is set between changeover portion and steel pipe pile comprises:
The second end of shutoff circle is fixed on to the lower end of described changeover portion, the first end of described shutoff circle is positioned at the top of described the second end;
The changeover portion that is fixed with shutoff circle is set in to the outside of steel pipe pile.
13. according to the offshore wind turbine single tube pile foundation grouting method described in claim 11 or 12, it is characterized in that, comprises to pouring into slurry formation grout blanket between described changeover portion and steel pipe pile:
Grouting Pipe is fixedly connected on to grouting port place, and described grouting port is opened on the wall of described changeover portion, is arranged on the lower end of described changeover portion, and is positioned at the top of described shutoff circle the second end;
Form grout blanket by grouting port to pouring into slurry between described changeover portion and steel pipe pile.
14. offshore wind turbine single tube pile foundation grouting methods according to claim 13, is characterized in that, comprise to pouring into slurry formation grout blanket between described changeover portion and steel pipe pile by grouting port:
Between described changeover portion and steel pipe pile, pour into slurry by grouting port;
Reach while imposing a condition judging grouting, put into rubber ball sealer from the entrance of Grouting Pipe, the diameter of described rubber ball sealer is greater than the diameter of described grouting port;
Reach and set when threshold value judging Grouting Pipe internal pressure, close grouting pump and stop slip casting.
15. offshore wind turbine single tube pile foundation grouting methods according to claim 14, is characterized in that, after forming grout blanket, also comprise:
Take out described rubber ball sealer by the stay cord being fixedly embedded in described rubber ball sealer.
CN201110034097.4A 2011-01-31 2011-01-31 Grouting device, assembly and grouting method for single pipe pile foundation of offshore wind turbine generating set CN102619227B (en)

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CN103437372B (en) * 2013-08-13 2016-08-10 广东明阳风电产业集团有限公司 A kind of connecting structure for jacket foundation and underwater pile foundation of offshore wind turbine and grouting method
CN104480937B (en) * 2014-12-02 2016-05-04 中国能源建设集团广东省电力设计研究院有限公司 Grouting linkage section device and using method thereof
CN104499500B (en) * 2014-12-02 2016-02-17 瑞风能源(武汉)工程技术有限公司 A kind of wind power foundation post-grouting reinforcement waterproofing system
CN104912081B (en) * 2015-06-29 2017-03-22 中国能源建设集团广东省电力设计研究院有限公司 Foundation grouting method for offshore wind power and foundation grouting work barge for offshore wind power
CN105544549A (en) * 2016-01-28 2016-05-04 上海建工二建集团有限公司 Joint device for preventing one-column one-pipe steel pile column from reversely grouting and construction method for joint device
CN105604084B (en) * 2016-03-02 2018-11-02 福建省水利水电勘测设计研究院 Offshore wind turbine foundation steel-pipe pile and changeover portion high undersea hydrostatic pressures grouting connection structure and its installation method
CN108401436A (en) * 2017-06-13 2018-08-14 衡橡科技股份有限公司 A kind of elder generation's stake formula packer
CN109653207A (en) * 2018-11-07 2019-04-19 南通市海洋水建工程有限公司 A kind of gap grouting process between offshore boosting station jacket structure and pile foundation

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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

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