CN102619227A - 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
CN102619227A
CN102619227A CN2011100340974A CN201110034097A CN102619227A CN 102619227 A CN102619227 A CN 102619227A CN 2011100340974 A CN2011100340974 A CN 2011100340974A CN 201110034097 A CN201110034097 A CN 201110034097A CN 102619227 A CN102619227 A CN 102619227A
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CN
China
Prior art keywords
grouting
changeover
steel pipe
offshore wind
pipe pile
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CN2011100340974A
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Chinese (zh)
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CN102619227B (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
Application granted granted Critical
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 generating group 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 generating group 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 more and more receive the attention of various countries.In the last few years, wind-powered electricity generation had welcome the fast-developing phase in China, but because the restriction of 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 receives certain restriction.Because Deposits in Eastern Coastal China provinces and cities are populous, economically developed, need for electricity is vigorous, and the east coastal be the wind energy resources rich region, offshore wind farm progressively receives the attention of each blower fan manufacturer and genco, the development space ten minutes is wide.
The main form of structure in offshore wind generating basis has: concrete gravity formula, single tube stake, many pile leaders frame, floatation type etc.
The single tube pile foundation adopts owing to 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 marine wind electric field.At home, along with a large amount of introductions of marine guidance piling equipment, estimate that the single tube pile foundation can extensively be adopted in marine wind field from now on.
The single tube pile foundation mainly is made up of two parts: steel pipe pile and changeover portion.Because during marine guidance piling, the vertical precision of steel pipe pile 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 steel pipe pile are coupled together.Leave certain slit between changeover portion and the steel pipe pile, can correct the perpendicularity deviation of steel pipe pile within the specific limits.With high-strength grout the slit is filled after the changeover portion leveling, to realize being connected of changeover portion and steel pipe pile.
Existing provisions for grouting adopts the shutoff work before materials such as sealing compound or foam rods are realized being in the milk usually; With sealing compound or foam rods extrusion packing in the slit of changeover portion and steel pipe pile; The pressure that this sealing means bore is less, fail in compression in filling process easily, and rely on frictional force to be fixed in the slit of changeover portion and steel pipe pile; Lost efficacy easily; Cause grouting material to run slurry, spillage or seawater is counter irritates, can have a strong impact on the intensity of grouting material behind the sea water intrusion grouting material, cause a hidden trouble for architecture quality safety.
Existing provisions for grouting is that the grouting material is injected by top, because the space between changeover portion and the steel pipe pile is less, the grouting degree of depth is very big, and the slurry setting rate is fast, so be easy to form cavity, causes the grouting leakiness.After grouting finished, because grouting is highly big, if termination of pumping immediately after grouting is accomplished, the grouting material can backflow in the grout pipe immediately, causes not in place, the leakiness of grouting.If do not stop grout pump immediately, make to keep certain pressure in the grout pipe, then can make the grouting material in the grout pipe solidify generation gambling pipe, cause waste.In addition, after grout pump stopped, pressure was not absolute constant, has fluctuation within a narrow range, can make grouting material in solidifying by disturbance, influence grouting material intensity yet.
Summary of the invention
The invention provides a kind of offshore wind generating group single tube pile foundation provisions for grouting, single tube stake assembly and grouting method,, improved grouting quality and safety factor to solve the defective that existing provisions for grouting runs slurry, spillage easily.
The invention provides a kind of offshore wind generating group single tube pile foundation provisions for grouting, comprise Grouting Pipe, wherein, also comprise:
The shutoff circle; The internal diameter of first end of said shutoff circle is less than the internal diameter of second end; Said shutoff circle is used to be arranged between the sheathed each other changeover portion and steel pipe pile; Be set in the outside of said steel pipe pile, first end of said shutoff circle is used to seal the outer wall of conflict at steel pipe pile, and second end of said shutoff circle is used to seal the inwall of conflict at changeover portion.
Aforesaid offshore wind generating group single tube pile foundation provisions for grouting, wherein:
The longitudinal cross-section of said shutoff circle is shaped as broken line shape, and the longitudinal cross-section shape of said first end and second end is flat level.
Aforesaid offshore wind generating group single tube pile foundation provisions for grouting, wherein: said shutoff circle is a rubber shutoff circle.
Aforesaid offshore wind generating group single tube pile foundation provisions for grouting wherein, also comprises:
The rubber ball sealer, the diameter of said rubber ball sealer is greater than the diameter of the grouting port that is used to connect said Grouting Pipe on the changeover portion.
Aforesaid offshore wind generating group single tube pile foundation provisions for grouting wherein, also comprises:
Stay cord fixedly is embedded in the said rubber ball sealer.
The invention provides a kind of offshore wind generating group single tube stake assembly, comprise the grout blanket between changeover portion, steel pipe pile and said changeover portion and the steel pipe pile, wherein:
Be provided with the shutoff circle in the said grout blanket; The internal diameter of first end of said shutoff circle is less than the internal diameter of second end; Said shutoff snare is located at the outside of said steel pipe pile; First end sealing of said shutoff circle is conflicted on the outer wall of steel pipe pile, and the sealing of second end of said shutoff circle is conflicted on the inwall of changeover portion.
Aforesaid offshore wind generating group single tube stake assembly, wherein:
First end of said shutoff circle is positioned at the top of second end, and said second end is fixed on the said changeover portion.
Aforesaid offshore wind generating group single tube stake assembly is characterized in that:
The longitudinal cross-section of said shutoff circle is shaped as broken line shape, and the longitudinal cross-section shape of said first end and second end is flat level.
Aforesaid offshore wind generating group single tube stake assembly, wherein:
Offer the grouting port that is used to connect Grouting Pipe on the wall of said changeover portion, said grouting port is arranged on the lower end of said changeover portion, and is positioned at the top of said shutoff circle second end.
Aforesaid offshore wind generating group single tube stake assembly, wherein: said grouting port place is provided with and is used for the adpting flange that is fixedly connected with Grouting Pipe.
Aforesaid offshore wind generating group single tube stake assembly, wherein: the diameter of said grouting port is less than the outlet diameter of Grouting Pipe.
Aforesaid offshore wind generating group single tube stake assembly wherein, also comprises: the shelves frame is fixedly installed on outside the said grouting port.
The invention provides a kind of offshore wind generating group single tube pile foundation grouting method, wherein, comprising:
The changeover portion of offshore wind generating group single tube stake is set in the outside of steel pipe pile; And the shutoff circle is set between changeover portion and steel pipe pile; The internal diameter of first end of said shutoff circle is less than the internal diameter of second end; Said shutoff snare is located at the outside of said steel pipe pile, and first end sealing of said shutoff circle is conflicted on the outer wall of steel pipe pile, and the sealing of second end of said shutoff circle is conflicted on the inwall of changeover portion;
The perfusion slurry forms grout blanket between said changeover portion and steel pipe pile.
Aforesaid offshore wind generating group single tube pile foundation grouting method wherein, is set in the outside of steel pipe pile with the changeover portion of offshore wind generating group single tube stake, and the shutoff circle is set between changeover portion and steel pipe pile comprises:
Second end of shutoff circle is fixed on the lower end of said changeover portion, and first end of said shutoff circle is positioned at the top of said second end;
The changeover portion that is fixed with the shutoff circle is set in the outside of steel pipe pile.
Aforesaid offshore wind generating group single tube pile foundation grouting method, wherein, perfusion slurry formation grout blanket comprises between said changeover portion and steel pipe pile:
Grouting Pipe is fixedly connected on the grouting port place, and said grouting port is opened on the wall of said changeover portion, is arranged on the lower end of said changeover portion, and is positioned at the top of said shutoff circle second end;
Between said changeover portion and steel pipe pile, pour into slurry through grouting port and form grout blanket.
Aforesaid offshore wind generating group single tube pile foundation grouting method, wherein, pour into slurry formation grout blanket through grouting port and comprise between said changeover portion and steel pipe pile:
Between said changeover portion and steel pipe pile, pour into slurry through grouting port;
Reach when imposing a condition judging grouting, put into the rubber ball sealer from the inlet of Grouting Pipe, the diameter of said rubber ball sealer is greater than the diameter of said grouting port;
Reach when setting threshold value judging the Grouting Pipe internal pressure, close grouting pump and stop slip casting.
Aforesaid offshore wind generating group single tube pile foundation grouting method wherein, after forming grout blanket, also comprises:
Stay cord through fixedly being embedded in the said rubber ball sealer takes out said rubber ball sealer.
Offshore wind generating group single tube pile foundation provisions for grouting provided by the invention, single tube stake assembly and grouting method are through being provided with the shutoff circle; Solved the defective that existing provisions for grouting runs the slurry spillage easily; While single tube stake assembly is secure more, has improved the safety of using.
Description of drawings
Shutoff coil structures sketch map in the offshore wind generating group single tube pile foundation provisions for grouting that Fig. 1 provides for the embodiment of the invention one.
Grouting mouthful partial structurtes sketch map in the offshore wind generating group single tube pile foundation provisions for grouting that Fig. 2 provides for the embodiment of the invention one.
Grouting mouthful partial structurtes sketch map in the offshore wind generating group single tube pile foundation provisions for grouting that Fig. 3 provides for the embodiment of the invention two.
The offshore wind generating group single tube stake assembly structure sketch map that Fig. 4 provides for the embodiment of the invention three.
The flow chart of the offshore wind generating group single tube pile foundation grouting method that Fig. 5 provides for the embodiment of the invention four.
The flow chart of the offshore wind generating group single tube pile foundation grouting method that Fig. 6 provides for the embodiment of the invention five.
Reference numeral:
1-shutoff circle; 2-first end; 3-shutoff circle main body;
4-second end; The 5-changeover portion; The 6-steel pipe pile;
The 7-grout blanket; The 8-Grouting Pipe; The 9-seawater;
The 10-sea bed; 11-rubber ball sealer; The 12-adpting flange;
The 13-basic internal; 14 bases are outside; The 15-grouting port;
The 16-fixed head.
The specific embodiment
For making the object of the invention, technical scheme and advantage clearer; To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention carried out clear, intactly description, obviously; Described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Embodiment one
The structural representation of shutoff circle in the offshore wind generating group single tube pile foundation provisions for grouting that Fig. 1 provides for the embodiment of the invention one, grouting mouthful partial structurtes sketch map in the offshore wind generating group single tube pile foundation provisions for grouting that Fig. 2 provides for the embodiment of the invention one.The embodiment of the invention one provides a kind of offshore wind generating group single tube pile foundation provisions for grouting, comprises Grouting Pipe 8, wherein; Also comprise: shutoff circle 1, the internal diameter of first end 2 of shutoff circle 1 are less than the internal diameter of second end 4, and shutoff circle 1 is used to be arranged between the sheathed each other 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 used to seal the outer wall of conflict at steel pipe pile 6, and second end 4 is used to seal the inwall of conflict at changeover portion 5.In the said structure, shutoff circle 1 is kept apart the gap and the seawater of 6 of changeover portion 5 and steel pipe piles, in filling process, plays the effect of water-tight.
On the basis of the foregoing description, preferably shutoff circle 1 is set to the longitudinal cross-section and is shaped as broken line shape, the longitudinal cross-section shape of first end 2 and second end 4 is flat level.Above-mentioned shape can be tighter inwall and the outer wall of steel pipe pile 6 of applying changeover portion 5, simultaneously flat segments the path of leaking water that has prolonged 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 when being enclosed within steel pipe pile 6 outer walls, strengthens sealed waterproof effect.
The offshore wind generating group single tube pile foundation provisions for grouting that the embodiment of the invention provides utilizes the sealing function of shutoff circle effectively to prevent the spillage and race slurry phenomenon of filling process, and the prevention inwelling goes into to influence pulp strength in the slurry, makes the structure safety and reliability.
Embodiment two
Grouting mouthful partial structurtes sketch map in the offshore wind generating group single tube pile foundation provisions for grouting that Fig. 3 provides for the embodiment of the invention two.The embodiment of the invention two provides a kind of offshore wind generating group 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 the changeover portion 5.When the grouting The work is nearly finished, when promptly pump pressure reaches a setting value, rubber ball sealer 11 is put into Grouting Pipe 8, make rubber ball sealer 11 trail the 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 the changeover portion 5; Rubber ball sealer 11 will be stuck in grouting port 15 places; To be in the milk the material shutoff in grout blanket 7; Rubber ball sealer 11 also can be cleaned out the grouting material in the Grouting Pipe 8 simultaneously, and use the application life of also having improved Grouting Pipe 8 convenient next time.Grouting finishes the back and removes Grouting Pipe 8, takes out rubber ball sealer 11.
For the convenient rubber ball sealer 11 that takes out, preferably also be provided with stay cord, be embedded in the rubber ball sealer 11.
The offshore wind generating group single tube pile foundation provisions for grouting that the embodiment of the invention provides will be in the milk through the rubber ball sealer and expect that stable shutoff is in grout blanket; Avoided the grouting material in hardening process, to be disturbed; Clear up Grouting Pipe simultaneously, reduced the waste of Grouting Pipe.
Embodiment three
The offshore wind generating group single tube stake assembly structure sketch map that Fig. 4 provides for the embodiment of the invention three.The embodiment of the invention provides a kind of offshore wind generating group single tube stake assembly; Please be simultaneously with reference 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 the steel pipe pile 6, wherein: be provided with shutoff circle 1 in the grout blanket 7; The internal diameter of first end 2 of shutoff circle 1 is less than the internal diameter of 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 4 sealings of second end are conflicted on the inwall of changeover portion 5.
First end 2 of shutoff circle 1 is positioned at the top of second end 4, and second end 4 can be through being bolted on the changeover portion 5, and the mode that second end 4 is fixed on the changeover portion 5 can have multiple; For example shown in Figure 3, specifically be that changeover portion 5 lower ends are provided with fixed head 16, can hold second end 4 from the below; Second end 4 is fixedly connected with changeover portion 5 with backing plate through bolt simultaneously; Thereby make in the filling process, shutoff circle 1 can not move, and is solid and reliable.The longitudinal cross-section of shutoff circle 1 is shaped as broken line shape, and the longitudinal cross-section shape of first end 2 and second end 4 is flat level.Above-mentioned shape can be tighter inwall and the outer wall of steel pipe pile 6 of applying changeover portion 5, simultaneously flat segments the path of leaking water that has prolonged 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 changeover portion 5, because grouting path length and dark is easy to generate cavity, grouting port 15 is arranged on the lower end of changeover portion 5, has effectively improved this situation.
Further, grouting port 15 places are provided with adpting flange 12, are used for being fixedly connected with Grouting Pipe 8.
Further, the outlet diameter of the diameter of grouting port 15 less than Grouting Pipe 8 is set, both can have prevented that air from get into forming cavity, when using 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 a shelves frame specifically can be the cross shelves frame that blocks at grouting port 15 places, when using 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 generating group single tube stake assembly that the embodiment of the invention provides has improved prior art through the lower end that grouting port is arranged on changeover portion and has been injected the defective that is prone to form cavity by the upper end; Through the phenomenon that the shutoff circle prevents that effectively spillage runs slurry in the filling process is set, make single tube stake assembly structure more solid and reliable.
Embodiment four
The flow chart of the offshore wind generating group single tube pile foundation grouting method that Fig. 5 provides for the embodiment of the invention four; This method can adopt offshore wind generating group single tube pile foundation provisions for grouting provided by the present invention to implement, to form offshore wind generating group single tube stake assembly provided by the present invention.This method specifically comprises:
Step 510, the changeover portion 5 of offshore wind generating group single tube stake assembly is set in 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 first end 2 of shutoff circle 1 is less than the internal diameter of second end 4; Shutoff circle 1 is set in the outside of said steel pipe pile 6, and its first end, 2 sealings are conflicted on the outer wall of steel pipe pile 6, and 4 sealings of second end are conflicted on the inwall of changeover portion 5;
Step 520, the perfusion slurry forms grout blanket 7 between changeover portion 5 and steel pipe pile 6.
Shutoff circle 1 be provided with can insulating sea water pour in down a chimney, effectively prevented to run the generation of slurry spillage phenomenon, guaranteed the reliability of grouting.
On the basis of the foregoing description, the changeover portion 5 of offshore wind generating group single tube stake assembly is set in 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:
Second end 4 of shutoff circle 1 is fixed on the lower end of changeover portion 5, and first end 2 of shutoff circle 1 is positioned at the top of second end 4;
The changeover portion that is fixed with shutoff circle 15 is set in the outside of steel pipe pile 6.
Second end 4 of shutoff circle 1 can be fixed on the lower end of changeover portion 5 through bolted mode; But be not limited to this; Can first end 2 of shutoff circle 1 be arranged on simultaneously the top of second end 4; The changeover portion 5 that will be fixed with shutoff circle 1 again is set in the outside of steel pipe pile 6, to implement follow-up grouting work.
Further, perfusion slurry formation grout blanket 7 comprises between changeover portion 5 and steel pipe pile 6:
Grouting Pipe 8 is fixedly connected on 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;
Between changeover portion 5 and steel pipe pile 6, pour into slurry through grouting port 15 and form grout blanket 7.
Being provided with of above-mentioned grouting port 15 positions can overcome prior art from up to down is in the milk, because the long defective that is easy to generate cavity in path.
Further, between changeover portion 5 and steel pipe pile 6, pouring into slurry formation grout blanket 7 through grouting port 15 specifically comprises:
Between changeover portion 5 and steel pipe pile 6, pour into slurry through grouting port 15;
Reach when imposing a condition judging grouting, put into rubber ball sealer 11 from the inlet of Grouting Pipe 8, the diameter of rubber ball sealer 11 is greater than the diameter of grouting port 15.
It is that the pressure of grouting pump is set a threshold value that the technique scheme what is called imposes a condition, and representes promptly that greater than this threshold value slurry fills with, and slurry pressure is stable; This moment can termination of pumping to stop to continue grouting, can adopt control appliance to judge to the judgement of grouting pump pressure, also can artificial judgment; When the grouting The work is nearly finished; Be pump pressure when reaching above-mentioned threshold value, rubber ball sealer 11 is put into Grouting Pipe 8, make rubber ball sealer 11 trail the grouting material and arrive grouting ports 15 via Grouting Pipe 8.Because the diameter of rubber ball sealer 11 is greater than the diameter of grouting port 15 on the changeover portion 5; Rubber ball sealer 11 will be stuck in grouting port 15 places; To be in the milk the material shutoff in grout blanket 7; Rubber ball sealer 11 also can be cleaned out the grouting material in the Grouting Pipe 8 simultaneously, and use the application life of also having improved Grouting Pipe 8 convenient next time.
Reach when setting threshold value judging Grouting Pipe 8 internal pressures, close grouting pump and stop slip casting.
Application of rubber ball sealer 11 can make stable the remaining in the grout blanket of grouting material after grouting pump stops, preventing the grouting material by disturbance, thereby has improved the intensity of grout blanket 7.
Further, after forming grout blanket 7, also specifically comprise:
Stay cord through fixedly being embedded in the rubber ball sealer 11 takes out rubber ball sealer 11.After slurry solidifies,, be provided with stay cord, use more convenient effective for preventing that rubber ball sealer 11 is difficult to take out.
The offshore wind generating group single tube pile foundation grouting method that the embodiment of the invention provides has improved that grout blanket is prone to cavity in the existing engineering; Filling process is prone to run the slurry spillage; And grouting finishes the unsettled defective of disposed slurry, improved the 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 invention five.The embodiment of the invention five provides a kind of preferred single tube pile foundation grouting method, and its concrete steps are following:
Step 610, the changeover portion 5 of offshore wind generating group single tube stake assembly is set in the outside of steel pipe pile 6, and between changeover portion 5 and steel pipe pile 6, shutoff circle 1 is set;
Step 620, second end 4 of shutoff circle 1 is fixed on the lower end of changeover portion 5, first end 2 of shutoff circle 1 is positioned at the top of second end 4;
Step 630, the changeover portion 5 that will be fixed with shutoff circle 1 are 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 4 sealings of second end are conflicted on the inwall of changeover portion 5;
Gap between step 640, inspection changeover portion 5 and the steel pipe pile 6 guarantees that grouting thickness meets the requirements, and discharges the seawater in the steel pipe pile 6 with water pump, sets up the grouting operation platform.With tap water the gap of being in the milk of treating between changeover portion 5 and the steel pipe pile 6 is rinsed well repeatedly, the surplus water after the flushing is discharged from Grouting Pipe 8;
Step 650, Grouting Pipe 8 is fixedly connected on 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 through grouting port 15;
Step 670, reach when imposing a condition judging grouting, put into rubber ball sealer 11 from the inlet of Grouting Pipe 8, the diameter of rubber ball sealer 11 is greater than the diameter of grouting port 15;
Step 680, reach when setting 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 through the stay cord that fixedly is embedded in the rubber ball sealer 11.
The single tube pile foundation grouting method that the embodiment of the invention provides has solved existing grouting method and has been prone to run the unstable defective of slurry pressure in slurry spillage and the filling process, the water-tight property and the safety that have improved grout blanket.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.

Claims (17)

1. an offshore wind generating group single tube pile foundation provisions for grouting comprises Grouting Pipe, it is characterized in that, also comprises:
The shutoff circle; The internal diameter of first end of said shutoff circle is less than the internal diameter of second end; Said shutoff circle is used to be arranged between the sheathed each other changeover portion and steel pipe pile; Be set in the outside of said steel pipe pile, first end of said shutoff circle is used to seal the outer wall of conflict at steel pipe pile, and second end of said shutoff circle is used to seal the inwall of conflict at changeover portion.
2. offshore wind generating group single tube pile foundation provisions for grouting according to claim 1 is characterized in that:
The longitudinal cross-section of said shutoff circle is shaped as broken line shape, and the longitudinal cross-section shape of said first end and second end is flat level.
3. offshore wind generating group single tube pile foundation provisions for grouting according to claim 1 and 2, it is characterized in that: said shutoff circle is a rubber shutoff circle.
4. offshore wind generating group single tube pile foundation provisions for grouting according to claim 1 is characterized in that, also comprises:
The rubber ball sealer, the diameter of said rubber ball sealer is greater than the diameter of the grouting port that is used to connect said Grouting Pipe on the changeover portion.
5. offshore wind generating group single tube pile foundation provisions for grouting according to claim 4 is characterized in that, also comprises:
Stay cord fixedly is embedded in the said rubber ball sealer.
6. an offshore wind generating group single tube stake assembly comprises the grout blanket between changeover portion, steel pipe pile and said changeover portion and the steel pipe pile, it is characterized in that:
Be provided with the shutoff circle in the said grout blanket; The internal diameter of first end of said shutoff circle is less than the internal diameter of second end; Said shutoff snare is located at the outside of said steel pipe pile; First end sealing of said shutoff circle is conflicted on the outer wall of steel pipe pile, and the sealing of second end of said shutoff circle is conflicted on the inwall of changeover portion.
7. offshore wind generating group single tube stake assembly according to claim 6 is characterized in that:
First end of said shutoff circle is positioned at the top of second end, and said second end is fixed on the said changeover portion.
8. offshore wind generating group single tube stake assembly according to claim 7 is characterized in that:
The longitudinal cross-section of said shutoff circle is shaped as broken line shape, and the longitudinal cross-section shape of said first end and second end is flat level.
9. according to claim 7 or 8 described offshore wind generating group single tube stake assemblies, it is characterized in that:
Offer the grouting port that is used to connect Grouting Pipe on the wall of said changeover portion, said grouting port is arranged on the lower end of said changeover portion, and is positioned at the top of said shutoff circle second end.
10. offshore wind generating group single tube stake assembly according to claim 9 is characterized in that: said grouting port place is provided with and is used for the adpting flange that is fixedly connected with Grouting Pipe.
11. offshore wind generating group single tube stake assembly according to claim 9, it is characterized in that: the diameter of said grouting port is less than the outlet diameter of Grouting Pipe.
12. offshore wind generating group single tube stake assembly according to claim 9 is characterized in that, also comprises: the shelves frame is fixedly installed on outside the said grouting port.
13. an offshore wind generating group single tube pile foundation grouting method is characterized in that, comprising:
The changeover portion of offshore wind generating group single tube stake assembly is set in the outside of steel pipe pile; And the shutoff circle is set between changeover portion and steel pipe pile; The internal diameter of first end of said shutoff circle is less than the internal diameter of second end; Said shutoff snare is located at the outside of said steel pipe pile, and first end sealing of said shutoff circle is conflicted on the outer wall of steel pipe pile, and the sealing of second end of said shutoff circle is conflicted on the inwall of changeover portion;
The perfusion slurry forms grout blanket between said changeover portion and steel pipe pile.
14. offshore wind generating group single tube pile foundation grouting method according to claim 13 is characterized in that, the changeover portion of offshore wind generating group single tube stake is set in the outside of steel pipe pile, and the shutoff circle is set between changeover portion and steel pipe pile comprises:
Second end of shutoff circle is fixed on the lower end of said changeover portion, and first end of said shutoff circle is positioned at the top of said second end;
The changeover portion that is fixed with the shutoff circle is set in the outside of steel pipe pile.
15., it is characterized in that perfusion slurry formation grout blanket comprises between said changeover portion and steel pipe pile according to claim 13 or 14 described offshore wind generating group single tube pile foundation grouting methods:
Grouting Pipe is fixedly connected on the grouting port place, and said grouting port is opened on the wall of said changeover portion, is arranged on the lower end of said changeover portion, and is positioned at the top of said shutoff circle second end;
Between said changeover portion and steel pipe pile, pour into slurry through grouting port and form grout blanket.
16. offshore wind generating group single tube pile foundation grouting method according to claim 15 is characterized in that, between said changeover portion and steel pipe pile, pours into slurry formation grout blanket through grouting port and comprises:
Between said changeover portion and steel pipe pile, pour into slurry through grouting port;
Reach when imposing a condition judging grouting, put into the rubber ball sealer from the inlet of Grouting Pipe, the diameter of said rubber ball sealer is greater than the diameter of said grouting port;
Reach when setting threshold value judging the Grouting Pipe internal pressure, close grouting pump and stop slip casting.
17. offshore wind generating group single tube pile foundation grouting method according to claim 16 is characterized in that, after forming grout blanket, also comprises:
Stay cord through fixedly being embedded in the said rubber ball sealer takes out said 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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CN103437372A (en) * 2013-08-13 2013-12-11 广东明阳风电产业集团有限公司 Connecting structure for jacket foundation and underwater pile foundation of offshore wind turbine and grouting method
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CN104499500A (en) * 2014-12-02 2015-04-08 瑞风能源(武汉)工程技术有限公司 Post-grouting, reinforcing and waterproofing system for wind power foundation
CN104912081A (en) * 2015-06-29 2015-09-16 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
CN105604084A (en) * 2016-03-02 2016-05-25 福建省水利水电勘测设计研究院 Underwater high-pressure grouting connecting structure for offshore wind turbine foundation steel pipe pile and transition section and installation process of underwater high-pressure grouting connecting structure
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
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CN103437372A (en) * 2013-08-13 2013-12-11 广东明阳风电产业集团有限公司 Connecting structure for jacket foundation and underwater pile foundation of offshore wind turbine and grouting method
CN104480937A (en) * 2014-12-02 2015-04-01 中国能源建设集团广东省电力设计研究院 Grouting connection unit and application method thereof
CN104499500A (en) * 2014-12-02 2015-04-08 瑞风能源(武汉)工程技术有限公司 Post-grouting, reinforcing and waterproofing system for wind power foundation
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CN104912081A (en) * 2015-06-29 2015-09-16 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
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
CN105604084A (en) * 2016-03-02 2016-05-25 福建省水利水电勘测设计研究院 Underwater high-pressure grouting connecting structure for offshore wind turbine foundation steel pipe pile and transition section and installation process of underwater high-pressure grouting connecting structure
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
WO2018227357A1 (en) * 2017-06-13 2018-12-20 衡橡科技股份有限公司 Packer allowing piling to be performed first
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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