CN215290070U - Offshore wind turbine pile foundation grouting plugging device - Google Patents
Offshore wind turbine pile foundation grouting plugging device Download PDFInfo
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- CN215290070U CN215290070U CN202120955725.1U CN202120955725U CN215290070U CN 215290070 U CN215290070 U CN 215290070U CN 202120955725 U CN202120955725 U CN 202120955725U CN 215290070 U CN215290070 U CN 215290070U
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Abstract
The utility model relates to the technical field of offshore wind power large-diameter single pile grouting plugging, and discloses an offshore wind turbine pile foundation grouting plugging device, which comprises a vertically arranged steel casing, a pile body, an upper blocking piece and a lower blocking piece; the steel casing is sleeved on the periphery of the pile body, and an annular plugging gap is formed between the steel casing and the pile body; the upper blocking piece is arranged at the upper part of the plugging gap; the lower blocking piece is arranged at the lower part of the plugging gap; the steel casing, the pile body, the upper barrier and the lower barrier enclose a closed cavity for filling grouting materials; the closed cavity is provided with a first grouting port and a second grouting port. The utility model provides an offshore wind turbine pile foundation slip casting plugging device simple structure to better reinforcement maintenance effect has.
Description
Technical Field
The utility model relates to an offshore wind power major diameter single pile slip casting shutoff technical field especially relates to an offshore wind turbine pile foundation slip casting plugging device.
Background
China has a wide sea area, has abundant ocean wind power resources, and has been developed in a large scale. The single pile structure is one of marine wind power foundation structures, is influenced by seawater erosion and wind vibration, and often needs to be periodically reinforced and maintained on the marine wind power foundation.
The conventional reinforcement maintenance methods include the following two methods: firstly, arranging a cofferdam around the offshore wind power foundation, pouring concrete for reinforcement after seawater in the cofferdam is extracted, and dismantling the cofferdam after the concrete is solidified, wherein the operation is time-consuming and labor-consuming; secondly, the sealing technology of the rubber ring or the steel plate is adopted, the method has high cost and complexity, and the effect is difficult to ensure. Meanwhile, the pile sinking process is easy to damage the prefabricated back cover material.
With the emergence of non-aqueous reaction type high molecular polymer grouting materials (such as polyurethane grouting materials, specifically refer to patents CN200910066336.7, CN200710054045.7, CN201510956500.7 and the like), waterproof reinforcement engineering is developed rapidly, which benefits from the excellent performances of anhydrous reaction, large expansion force, early strength, shock resistance, corrosion resistance and the like of the non-aqueous reaction type high molecular polymer grouting materials, and provides a new idea for the rapid reinforcement of offshore wind power foundation. However, due to the expansion characteristic of the high polymer, a certain confining pressure is required to increase the density to complete filling and plugging, which also limits the further application of the high polymer grouting technology in the field of offshore wind power.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the utility model provides an offshore wind turbine pile foundation slip casting plugging device, its simple structure to better reinforcement is maintained the effect has.
In order to achieve the purpose, the utility model provides a pile foundation grouting plugging device of an offshore wind turbine, which comprises a vertically arranged steel casing, a pile body, an upper blocking piece and a lower blocking piece;
the steel casing is sleeved on the periphery of the pile body, and an annular plugging gap is formed between the steel casing and the pile body; the upper blocking piece is arranged at the upper part of the plugging gap; the lower blocking piece is arranged at the lower part of the plugging gap; the steel casing, the pile body, the upper barrier and the lower barrier enclose a closed cavity for filling grouting materials; the closed cavity is provided with a first grouting port and a second grouting port.
Optionally, the upper barrier comprises a first securing assembly and a first closure; the first fixing assembly is connected to the upper end of the steel casing; the first plugging piece is connected to the steel casing through the first fixing assembly and fixed to the top of the plugging gap;
the lower barrier comprises a second fixing assembly and a second blocking piece; the second fixing component is connected to the lower end of the steel casing; the second plugging piece is connected to the steel casing through the second fixing assembly and fixed to the bottom of the plugging gap.
Optionally, defining the length of the first closure as d;
defining the inner diameter of the steel casing as r1；
Defining the outer diameter of the pile body as r2；
Defining a maximum width of the plugging gap as δ;
the maximum height of the first plugging piece attached to the pile body is defined as h;
wherein d is 2 (r)1-r2+δ)+h。
Optionally, the first closure is a moulded bag or a balloon; a plugging cavity is formed in the first plugging piece; the plugging cavity is provided with a charging hole.
Optionally, the first fixing assembly comprises a bolt inserted into the filling opening and penetrating into the first block piece, and a nut screwed with the bolt and abutting on the inner side of the first block piece.
Optionally, the device further comprises a charging pipe connected to the outer side of the steel casing;
the bolt is internally provided with a step through hole communicated with the blocking cavity, one end of the charging pipe is inserted into the step through hole, and the end part of the charging pipe is abutted against the step surface of the step through hole.
Optionally, the charging pipe is fixed to the outer side of the steel casing through an iron wire.
Optionally, the first fixing assembly further comprises an adhesive piece connected to the inner side wall of the steel casing, and the outer side of the first blocking piece is fixed to the steel casing through the adhesive piece.
Optionally, the system further comprises a first grouting device, a first grouting pipe, a second grouting device and a second grouting pipe; one end of the first grouting pipe is connected with the first grouting port, and the other end of the first grouting pipe is connected with the first grouting equipment; one end of the second grouting pipe is connected with the second grouting opening, and the other end of the second grouting pipe is connected with the second grouting equipment.
The utility model provides a pair of offshore wind turbine pile foundation slip casting plugging device compares with prior art, and its beneficial effect lies in: the utility model discloses a be equipped with first slip casting mouth and second slip casting mouth on airtight cavity to the staff pours into the reaction thick liquids of two kinds of differences into toward airtight cavity into, makes grouting material react and the inflation in airtight cavity, fills airtight cavity. And the upper barrier piece and the lower barrier piece are arranged to complete the plugging of the closed cavity so as to form an annular closed cavity. Go up barrier, lower barrier, steel and protect a section of thick bamboo and pile body and provide certain confined pressure for the reaction of high polymer, the density of the high polymer of affairs increases, makes the high polymer can fully contact with steel simultaneously protects a section of thick bamboo and pile body, make full use of the high cohesiveness between high polymer and steel protect a section of thick bamboo and the pile body, carry out triple shutoff, it is more obvious to consolidate the effect.
Drawings
Fig. 1 is a perspective view of an offshore wind turbine pile foundation grouting plugging device provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of the offshore wind turbine pile foundation grouting plugging device provided by the embodiment of the present invention;
fig. 3 is a schematic view of a connection structure of a first plugging member and a charging connector according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a bolt provided in an embodiment of the present invention;
fig. 5 is a schematic view of a connection structure of a filling joint on a first blocking member according to an embodiment of the present invention.
In the figure, 1, a pile body; 2. a steel casing; 3. an upper barrier; 31. a first fixed component; 311. a bolt; 312. a nut; 32. a first blocking member; 4. a lower barrier; 5. sealing the cavity; 6. a material filling pipe; 7. a stepped through hole; 7a, a step surface; 8. a first grouting device; 9. a first grouting pipe; 10. provided is an offshore construction platform.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms used in the present invention are used in the description of the present invention, and it should be understood that the terms "center", "upper", "lower", "vertical", "top", "bottom", "inner", "outer", and the like used in the present invention are used in the orientation or positional relationship indicated on the basis of the drawings, and are only for convenience of description of the present invention and simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 5, the offshore wind turbine pile foundation grouting plugging device according to the preferred embodiment of the present invention includes a vertically arranged steel casing 2, a pile body 1, an upper barrier 3, and a lower barrier 4; the steel casing 2 is sleeved on the periphery of the pile body 1, and an annular plugging gap is formed between the steel casing 2 and the pile body 1; the upper barrier 3 is arranged at the upper part of the plugging gap; the lower barrier 4 is arranged at the lower part of the plugging gap; the steel casing 2, the pile body 1, the upper barrier 3 and the lower barrier 4 together enclose a closed cavity 5 for filling grouting materials; the closed cavity 5 has a first injection port and a second injection port.
The pile body 1 in this embodiment may be a steel pipe pile. The first grouting opening and the second grouting opening are symmetrically arranged on two sides of the outer portion of the steel casing 2 by taking the axis of the steel casing 2 as a central line. And grouting connectors are arranged on the first grouting opening and the second grouting opening. The grouting material can be a non-aqueous reaction type high molecular polymer grouting material, such as a polyurethane grouting material, and specifically, refer to patents CN200910066336.7, CN200710054045.7, CN201510956500.7, and the like.
Based on the technical scheme, an annular plugging gap is formed between the pile body 1 and the steel casing 2. The upper blocking piece 3 and the lower blocking piece 4 are respectively arranged at the upper end and the lower end of the steel casing 2 and are used for blocking the gap and forming a closed cavity 5 in the blocking gap. The closed cavity 5 is used for filling a grouting material, and the grouting material is a non-aqueous reaction type high molecular polymer and has the performances of non-aqueous reaction, early strength (the strength can reach 90% in 15 minutes), large expansion force, corrosion resistance and the like. The grouting material can react and expand rapidly in seawater. In order to inject the grouting material into the sealed cavity 5, the sealed cavity 5 has a first grouting port for grouting and a second grouting port for exhausting and replenishing the grouting material into the sealed cavity 5. After the grouting material reacts in the closed cavity 5, the grouting material is filled in the closed cavity 5, and the closed space formed by the upper barrier 3, the lower barrier 4, the steel casing 2 and the pile body 1 provides enough confining pressure for the expansion of the high polymer, so that the density of the high polymer is improved. The high polymer can be in full contact with the steel pile casing 2 and the pile body 1 at the same time, high adhesion between the high polymer and the steel pile casing 2 and the pile body 1 is fully utilized, triple plugging is carried out, and the effect is more obvious.
The upper barrier 3 comprises a first fixing component 31 and a first plugging piece 32, the first fixing component 31 is connected to the upper end of the steel casing 2, and the first plugging piece 32 is connected to the steel casing 2 through the first fixing component 31 and fixed to the top of the plugging gap; the first fixing assembly 31 is used for fixing the first plugging piece 32 on the top end of the steel casing 2 and the pile body 1. Lower separation part 4 includes the fixed subassembly of second and second shutoff piece, and the fixed subassembly of second is connected at the lower extreme that a steel protected section of thick bamboo 2, and the second shutoff piece passes through the fixed subassembly of second to be connected on a steel protects section of thick bamboo 2 and fixes the bottom in shutoff clearance. And the second fixing assembly is used for fixing a second plugging piece on the bottom ends of the steel casing 2 and the pile body 1. The fixed subassembly of first fixed subassembly 31 and second is used for fixing first shutoff piece 32 and second shutoff piece at the both ends of airtight cavity 5, avoids injecting grouting material back in airtight cavity 5, and the high polymer inflation that the reaction produced extrudes first shutoff piece 32 and second shutoff piece, improves the intensity of the interior high polymer of airtight cavity 5.
Optionally, the length of the first closure piece 32 is defined as d; the inner diameter of the steel casing 2 is defined as r1(ii) a The outer diameter of the pile body 1 is defined as r2(ii) a Defining the maximum width of the plugging gap as δ; the maximum height of the first plugging piece 32 attached to the pile body 1 is defined as h; wherein d is 2 (r)1-r2+ δ) + h. By concluding the formula, the worker can obtain the length range of the first plugging piece 32 according to the diameters of the steel casing 2 and the pile body 1, the width of the plugging gap and the height of the first plugging piece 32 adhered to the pile body 1. The calculation formula is suitable for the structures of the steel casing 2 and the pile body 1 with different sizes, and the application range is wide. The length of the first plugging member 32 is larger than the inner diameter of the steel casing 2, so that the worker can stick the redundant parts of the head and the tail ends of the first plugging member 32 together to form a ring-shaped structure.
Optionally, the first blocking piece 32 is a mold bag, and a blocking cavity is arranged in the first blocking piece 32; the plugging cavity is provided with a charging port. When the first blocking piece 32 is a mold bag, a worker can inject the non-aqueous reaction type high molecular polymer grouting material into the material filling port, and the non-aqueous reaction type high molecular polymer grouting material expands in the mold bag to realize the top side blocking of the closed cavity 5.
In addition, the first fixing member 31 includes a bolt 311 and a nut 312, the bolt 311 is inserted into the charging port through the steel casing 2 and penetrates into the first block piece 32, and the nut 312 is screwed with the bolt 311 and abuts on the inner side of the first block piece 32. The first plugging piece 32 is connected to the steel casing 2 in a threaded manner, and is convenient to install. Offshore wind turbine pile foundation slip casting plugging device still includes filling tube 6. The charging pipe 6 is connected to the outer side of the steel casing 2. A stepped through hole 7 communicated with the blocking cavity is formed in the bolt 311, one end of the charging pipe 6 is inserted into the stepped through hole 7, and the end of the charging pipe 6 abuts against a stepped surface 7a of the stepped through hole 7. One end of the charging pipe 6 is externally connected with an external material, such as a grouting material, and the other end of the charging pipe 6 is inserted into the stepped through hole 7 in the bolt 311 to input the grouting material into the first blocking piece 32. The end of the charging pipe 6 abuts against the stepped surface 7a of the stepped through hole 7, preventing the charging pipe 6 from being inserted into the first blocking piece 32 to an excessively great depth and piercing the first blocking piece 32. Fill material pipe 6 and fix in the outside that a section of thick bamboo 2 was protected to the steel through the iron wire, through iron wire winding fill material pipe 6, will fill material pipe 6 and fix on a section of thick bamboo 2 is protected to the steel. The first fixing assembly 31 further comprises an adhesive member attached to the inner side wall of the steel casing 2, and the outer side of the first blocking member 32 is fixed to the steel casing 2 by the adhesive member. The adhesive may be silica sol, and the first blocking member 32 is bonded to the inner side of the steel casing 2 through the silica sol to further fix the position of the first blocking member in the gap.
Similarly, the structure of the lower blocking member 4 is the same as that of the upper blocking member 3, and may include the structure of a mold bag, a filling pipe 6, and the like, which are not described herein again.
More specifically, offshore wind turbine pile foundation slip casting plugging device still includes first slip casting equipment 8, first slip casting pipe 9, second slip casting equipment and second slip casting pipe. The first grouting device 8 and the second grouting device in this embodiment may be integrated high polymer grouting systems of patent application No. CN201310124851.2, and are highly mobile, and may be vehicle-mounted or ship-mounted. The first grouting pipe 9 and the second grouting pipe are national standard galvanized grouting pipes with the outer diameter of 8 mm and the thickness of 1 mm. One end of a first grouting pipe 9 is connected with the first grouting port, and the other end of the first grouting pipe 9 is connected with the first grouting equipment 8; one end of the second grouting pipe is connected with the second grouting opening, and the other end of the second grouting pipe is connected with second grouting equipment. In this embodiment, adopt first slip casting equipment 8 slip casting earlier, second slip casting equipment is not connected the second slip casting pipe, through observing the thick liquids degree of solidifying of second slip casting pipe, connects second slip casting equipment and second slip casting pipe again, utilizes second slip casting equipment toward the slip casting in airtight cavity 5. In other embodiments, other grouting materials may also be used, such as: the first grouting device 8 and the second grouting device respectively inject the component A and the component B in the CN106894409B through the first grouting pipe 9 and the second grouting pipe, so that the component A and the component B are contacted in the closed cavity 5 and rapidly react and expand to fill the closed cavity 5.
The utility model discloses a working process does:
the first plugging member 32 is attached to the upper end of the steel casing 2 by means of a nut 312 and a bolt 311, and the first plugging member 32 is fixed to the inside of the steel casing 2 by means of an adhesive. A second closure is attached to the lower end of the steel casing 2 in the same manner. The charging pipe 6 is inserted into the stepped through hole 7 of the nut 312, and the charging pipe 6 is fixed to the outside of the steel casing 2 using a wire. And drilling according to the design requirement. The steel casing 2 is sunk into a mud layer at the bottom of the drill hole according to the design requirement, the bottom of the steel casing 2 is in contact with a rock stratum, and the top of the steel casing 2 is higher than the sea level. And (3) hoisting the prefabricated pile body 1 into the steel casing 2 by using a crane, and forming an uneven annular gap between the pile body 1 and the steel casing 2. The first grouting equipment and the second grouting equipment are placed above the offshore construction platform 10. And connecting the first grouting pipe 9 with the first grouting equipment, and connecting the second grouting pipe with the second grouting equipment. The a-component and the B-component in CN106894409B were injected into the first plugging member 32 so that the a-component and the B-component were contacted in the first plugging member 32, so that the first plugging member 32 rapidly reacted and expanded. Subsequently, the a-component and the B-component in CN106894409B were often injected into the second block piece so that the a-component and the B-component were contacted in the second block piece, so that the second block piece rapidly reacted to swell. After the first blocking piece 32 and the second blocking piece expand, the first blocking piece and the second blocking piece are respectively abutted against the inner side of the steel casing 2 and the outer side of the pile body 1. An annular closed cavity 5 is formed among the first plugging piece 32, the second plugging piece, the steel casing 2 and the pile body 1. The a-component and the B-component in CN106894409B were injected into the first injection port, so that the a-component and the B-component contacted and rapidly reacted and expanded in the closed chamber 5. And when the second grouting opening begins to emit the high polymer concentrated slurry for 5 minutes, closing the first grouting opening. And stopping grouting after the injection amount of the high polymer exceeds 15% of the design quality, and finishing construction at the moment.
To sum up, the embodiment of the utility model provides an offshore wind turbine pile foundation slip casting plugging device, it is through being equipped with first slip casting mouth and second slip casting mouth on airtight cavity to the staff pours into two kinds of different reaction thick liquids into toward airtight cavity into, makes grouting material react and expand in airtight cavity, fills airtight cavity. And the upper barrier piece and the lower barrier piece are arranged to complete the plugging of the closed cavity so as to form an annular closed cavity. Go up barrier, lower barrier, steel and protect a section of thick bamboo and pile body and provide certain confined pressure for the reaction of high polymer, the density of the high polymer of affairs increases, makes the high polymer can fully contact with steel simultaneously protects a section of thick bamboo and pile body, make full use of the high cohesiveness between high polymer and steel protect a section of thick bamboo and the pile body, carry out triple shutoff, it is more obvious to consolidate the effect.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (9)
1. A grouting plugging device for a pile foundation of an offshore wind turbine is characterized by comprising a vertically arranged steel casing, a pile body, an upper barrier member and a lower barrier member;
the steel casing is sleeved on the periphery of the pile body, and an annular plugging gap is formed between the steel casing and the pile body; the upper blocking piece is arranged at the upper part of the plugging gap; the lower blocking piece is arranged at the lower part of the plugging gap; the steel casing, the pile body, the upper barrier and the lower barrier enclose a closed cavity for filling grouting materials; the closed cavity is provided with a first grouting port and a second grouting port.
2. The offshore wind turbine pile foundation grouting plugging device of claim 1, wherein the upper barrier member comprises a first fixing assembly and a first plugging member; the first fixing assembly is connected to the upper end of the steel casing; the first plugging piece is connected to the steel casing through the first fixing assembly and fixed to the top of the plugging gap;
the lower barrier comprises a second fixing assembly and a second blocking piece; the second fixing component is connected to the lower end of the steel casing; the second plugging piece is connected to the steel casing through the second fixing assembly and fixed to the bottom of the plugging gap.
3. The offshore wind turbine pile foundation grouting plugging device according to claim 2, wherein the length of the first plugging member is defined as d;
defining the inner diameter of the steel casing as r1；
Defining the outer diameter of the pile body as r2；
Defining a maximum width of the plugging gap as δ;
the maximum height of the first plugging piece attached to the pile body is defined as h;
wherein d is 2 (r)1-r2+δ)+h。
4. The offshore wind turbine pile foundation grouting plugging device of claim 2, wherein the first plugging member is a mold bag; a plugging cavity is formed in the first plugging piece; the plugging cavity is provided with a charging hole.
5. The offshore wind turbine pile foundation grouting plugging device of claim 4, wherein the first fixing component comprises a bolt and a nut, the bolt is inserted into the filling opening through the steel casing and penetrates into the first plugging piece, and the nut is screwed with the bolt and abuts against the inner side of the first plugging piece.
6. The offshore wind turbine pile foundation grouting plugging device of claim 5, further comprising a charging pipe connected to the outside of the steel casing;
the bolt is internally provided with a step through hole communicated with the blocking cavity, one end of the charging pipe is inserted into the step through hole, and the end part of the charging pipe is abutted against the step surface of the step through hole.
7. The offshore wind turbine pile foundation grouting plugging device of claim 6, wherein the charging pipe is fixed outside the steel casing by an iron wire.
8. The offshore wind turbine pile foundation grouting plugging device of claim 5, wherein the first fixing assembly further comprises an adhesive piece connected to the inner side wall of the steel casing, and the outer side of the first plugging piece is fixed on the steel casing through the adhesive piece.
9. The offshore wind turbine pile foundation grouting plugging device of any one of claims 1-8, further comprising a first grouting device, a first grouting pipe, a second grouting device and a second grouting pipe; one end of the first grouting pipe is connected with the first grouting port, and the other end of the first grouting pipe is connected with the first grouting equipment; one end of the second grouting pipe is connected with the second grouting opening, and the other end of the second grouting pipe is connected with the second grouting equipment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120955725.1U CN215290070U (en) | 2021-05-06 | 2021-05-06 | Offshore wind turbine pile foundation grouting plugging device |
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| CN202120955725.1U CN215290070U (en) | 2021-05-06 | 2021-05-06 | Offshore wind turbine pile foundation grouting plugging device |
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| CN215290070U true CN215290070U (en) | 2021-12-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024007591A1 (en) * | 2022-07-08 | 2024-01-11 | 阳江海上风电实验室 | Rock-socketed monopile construction method based on double-casing pile stabilizing platform |
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2021
- 2021-05-06 CN CN202120955725.1U patent/CN215290070U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024007591A1 (en) * | 2022-07-08 | 2024-01-11 | 阳江海上风电实验室 | Rock-socketed monopile construction method based on double-casing pile stabilizing platform |
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