CN114045836B - Offshore grouting auxiliary device and construction method - Google Patents
Offshore grouting auxiliary device and construction method Download PDFInfo
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- CN114045836B CN114045836B CN202111204220.2A CN202111204220A CN114045836B CN 114045836 B CN114045836 B CN 114045836B CN 202111204220 A CN202111204220 A CN 202111204220A CN 114045836 B CN114045836 B CN 114045836B
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- plugging
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- 238000010276 construction Methods 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 79
- 239000010959 steel Substances 0.000 claims abstract description 79
- 239000011440 grout Substances 0.000 claims abstract description 21
- 239000004568 cement Substances 0.000 claims description 19
- 239000002002 slurry Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 description 14
- 238000007789 sealing Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/06—Placing concrete under water
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- Piles And Underground Anchors (AREA)
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Abstract
The invention discloses an offshore grouting auxiliary device and a construction method, belonging to the field of offshore wind power engineering, and the offshore grouting auxiliary device comprises: the second plugging pieces are all slidably arranged on the inner wall of the sleeve and can slide along the radial direction of the sleeve, and when the second plugging pieces are tightly attached to the outer wall of the steel pipe pile, the second plugging pieces plug a gap between the first plugging piece and the steel pipe pile; the baffle is located second shutoff piece upper end, and sleeve, first shutoff piece, second shutoff piece enclose into the holding chamber of outer wall with the baffle, and grout pipeline and holding chamber intercommunication, when the second shutoff piece all hugs closely in the steel-pipe pile outer wall, holding chamber upper end has the opening, and the opening makes the annular space intercommunication between holding chamber and sleeve and the steel-pipe pile. This marine grout auxiliary device just presss from both sides tightly in the steel-pipe pile through driving the second shutoff spare earlier, accomplishes the temporary fixation of jacket and the shutoff of grout bottom, need not operating personnel and sneaks into under water and carries out extra operation.
Description
Technical Field
The invention relates to the field of offshore wind power engineering, in particular to an offshore grouting auxiliary device and a construction method.
Background
Wind energy is a clean and pollution-free renewable energy source, so wind power generation is increasingly paid attention to by people. The wind power generation has higher requirements on wind power and wind speed, and the advantages of high wind speed, stable wind power, no land resource occupation and the like on the ocean can be fully utilized when a wind power facility is built on the sea. However, building wind power facilities at sea requires building an offshore wind power foundation on a surface of a sea bed.
At present, in offshore wind power foundation construction, a jacket is usually placed on a surface of a sea bed, a steel pipe pile penetrates through a sleeve at the bottom of the jacket and is driven into the sea bottom, and cement slurry is filled between the jacket and the sleeve to fixedly connect the jacket and the steel pipe pile. When grouting is not completed, the jacket is difficult to fix by the construction method, and the grouting bottom plugging work needs to be completed by an operator submerged underwater.
Disclosure of Invention
The invention aims to solve at least one technical problem in the prior art, and therefore the invention provides an offshore grouting auxiliary device which can temporarily fix a jacket in a grouting process and automatically complete the plugging of a grouting bottom.
The invention also provides a construction method applying the offshore grouting auxiliary device.
According to the embodiment of the invention, the offshore grouting auxiliary device comprises: the first plugging piece is in a circular ring shape, is arranged on the inner wall of the sleeve and is spaced from the steel pipe pile; the second plugging pieces are all arranged on the inner wall of the sleeve in a sliding mode and are uniformly distributed along the circumferential direction of the sleeve, the second plugging pieces are all arc-shaped and are located at the upper end of the first plugging piece, the second plugging pieces can slide along the radial direction of the sleeve, and when the second plugging pieces are tightly attached to the outer wall of the steel pipe pile, the second plugging pieces plug a gap between the first plugging piece and the steel pipe pile; and the baffle is in a circular ring shape, the baffle is arranged on the inner wall of the sleeve, the baffle is positioned at the upper end of the second sealing piece, the sleeve, the first sealing piece, the second sealing piece and the baffle enclose an accommodating cavity of the outer wall, the grouting pipeline is communicated with the accommodating cavity, when the second sealing piece is tightly attached to the outer wall of the steel pipe pile, the upper end of the accommodating cavity is provided with an opening, and the opening enables the accommodating cavity to be communicated with an annular space between the sleeve and the steel pipe pile.
The offshore grouting auxiliary device according to the embodiment of the first aspect of the invention has at least the following beneficial effects: after the installation work of the offshore grouting auxiliary device is finished on land, when grouting between the sleeve and the steel pipe pile is carried out on the sea, the offshore grouting auxiliary device can be clamped on the steel pipe pile by driving the second plugging piece, the temporary fixing of the jacket and the plugging of the grouting bottom are finished firstly, then the grouting of the annular space is finished, an operator does not need to dive into the water to carry out extra operation, the construction efficiency is improved, and the safety of the operator is guaranteed. Meanwhile, the offshore grouting auxiliary device is not required to be driven by other power sources such as hydraulic power or electric power, the structure is simple and reliable, and the construction cost is reduced.
According to some embodiments of the invention, the opening is a through hole formed in the baffle, the second plugging piece can cover and open the through hole by sliding, and when the second plugging pieces are tightly attached to the outer wall of the steel pipe pile, the through hole is opened to enable the accommodating cavity to be communicated with an annular space between the sleeve and the steel pipe pile.
According to some embodiments of the invention, when the second plugging member is tightly attached to the outer wall of the steel pipe pile, the second plugging member is staggered from the baffle, the opening is a gap between the baffle and the second plugging member in the radial direction of the sleeve, and the gap enables the accommodating cavity to be communicated with an annular space between the sleeve and the steel pipe pile.
According to some embodiments of the invention, there are four second obturating members.
According to some embodiments of the invention, the grouting pipeline is communicated with the accommodating cavity through a grouting opening, and the grouting opening is formed in the side wall of the sleeve.
According to some embodiments of the invention, the plurality of grouting ports are provided, and the grouting ports correspond to the second plugging pieces one by one.
According to some embodiments of the invention, one end of the second plugging member close to the steel pipe pile is provided with a rubber pad.
According to some embodiments of the invention, a guide rod is arranged on one side of the second blocking piece close to the sleeve, the guide rod is arranged along the radial direction of the sleeve, and the guide rod is arranged on the sleeve in a penetrating mode.
According to some embodiments of the invention, the first blocking piece is provided with a plurality of ribs at its lower end, the ribs being evenly distributed along the circumferential direction of the first blocking piece.
A construction method according to an embodiment of the second aspect of the present invention to which the offshore grouting aid according to the first aspect of the present invention is applied, includes:
hoisting a jacket into the sea by a crane ship, wherein the jacket is provided with four pile feet, a sleeve is arranged on the pile feet, a steel pipe pile is inserted into the sleeve, and the steel pipe pile is driven into the seabed;
preliminarily leveling the jacket;
grouting the accommodating cavity through the grouting pipeline, and pushing the second plugging piece to be close to the steel pipe pile along the radial direction of the sleeve by the grouted cement paste until the second plugging piece is tightly attached to the outer wall of the steel pipe pile;
accurately leveling the jacket;
further grout to the holding chamber through the grout pipeline, grout spills over from the opening part to flow into in the annular space.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described below with reference to the accompanying drawings and examples;
FIG. 1 is a cross-sectional view of an offshore grouting aid according to an embodiment of the invention;
FIG. 2 is a schematic structural view of the offshore grouting aid of FIG. 1;
FIG. 3 is an enlarged fragmentary view of the first embodiment shown at A in FIG. 1;
FIG. 4 is a schematic structural view of the first embodiment shown at A in FIG. 1;
FIG. 5 is a schematic view of the first embodiment shown in FIG. 1 at a different perspective;
FIG. 6 is a schematic view of the first embodiment shown in FIG. 1 at A, without grout injected;
FIG. 7 is a schematic view of the structure of the second embodiment at A shown in FIG. 1;
fig. 8 is a schematic view of the second embodiment shown in fig. 1 at a point a without grouting.
Reference numerals:
a first closure 100; a gap 110; a rib plate 120;
a second closure 200; a rubber pad 210; a guide rod 220;
a baffle 300; a housing chamber 310; a through hole 311; a slit 312;
a sleeve 1; a steel pipe pile 2; an annular space 3.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings only for the convenience of description of the present invention and simplification of the description, and does 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.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
An offshore grouting assistance apparatus and a construction method according to an embodiment of the present invention will be described with reference to fig. 1 to 8.
As shown in fig. 1 to 8, the offshore grouting aid according to an embodiment of the present invention includes: the first plugging piece 100 is annular, the first plugging piece 100 is arranged on the inner wall of the sleeve 1, and a gap 110 is reserved between the first plugging piece 100 and the steel pipe pile 2; the second plugging pieces 200 are all slidably arranged on the inner wall of the sleeve 1, the second plugging pieces 200 are uniformly distributed along the circumferential direction of the sleeve 1, the second plugging pieces 200 are all arc-shaped, the second plugging pieces 200 are all positioned at the upper end of the first plugging piece 100, the second plugging pieces 200 can all slide along the radial direction of the sleeve 1, and when the second plugging pieces 200 are all tightly attached to the outer wall of the steel pipe pile 2, the second plugging pieces 200 plug the gap 110 between the first plugging piece 100 and the steel pipe pile 2; the baffle 300 is circular ring shape, the baffle 300 sets up on 1 inner wall of sleeve, baffle 300 is located the second closure upper end, sleeve 1, first closure 100, the holding chamber 310 of outer wall is enclosed into with baffle 300 to second closure 200, the grout pipeline communicates with holding chamber 310, when second closure 200 all hugs closely in steel-pipe pile 2 outer wall, holding chamber 310 upper end has the opening, the opening makes holding chamber 310 communicate with annular space 3 between sleeve 1 and the steel-pipe pile 2.
For example, as shown in fig. 1 to 6, an annular first plugging member 100 is provided inside the sleeve 1, and the inner diameter of the first plugging member 100 is larger than the outer diameter of the steel pipe pile 2, so that interference to the steel pipe pile 2 is not caused in the process of inserting the steel pipe pile 2 into the sleeve 1 by the first plugging member 100, and after the steel pipe pile 2 is inserted, a gap 110 is left between the first plugging member 100 and the steel pipe pile 2, so that the first plugging member 100 cannot alone complete plugging of the grouting bottom. The second plugging piece 200 is tightly attached to the upper end of the first plugging piece 100, four second plugging pieces 200 are uniformly distributed around the circumference of the sleeve 1, the side surfaces of the four second plugging pieces 200 are connected through rubber sheets, the four second plugging pieces 200 can slide along the radial direction of the sleeve 1, when the four second plugging pieces 200 slide towards the steel pipe pile 2 to be tightly attached to the outer wall of the steel pipe pile 2, the gap 110 reserved between the first plugging piece 100 and the steel pipe pile 2 is completely plugged by the second plugging piece 200, and at the moment, the first plugging piece 100 and the second plugging piece 200 jointly complete plugging of the bottom of grouting. The baffle 300 is tightly attached to the upper end of the second plugging piece 200, the inner wall of the sleeve 1, the upper surface of the first plugging piece 100, the surface of the second plugging piece 200 facing the sleeve 1 and the lower surface of the baffle 300 jointly enclose a containing cavity 310, because the second plugging piece 200 can slide along the radial direction, the containing cavity 310 is a sealed space with a variable volume, cement slurry is injected into the containing cavity 310 through a grouting pipeline, the cement slurry pushes the second plugging piece 200 to slide towards the steel pipe pile 2 until the second plugging piece 200 is tightly attached to the outer wall of the steel pipe pile 2, and the bottom of the grouting is plugged, and because of the movement of the second plugging piece 200, an opening is opened at the upper end of the containing cavity 310, and the opening enables the containing cavity 310 to be communicated with the annular space 3 between the sleeve 1 and the steel pipe pile 2. Therefore, when the second plugging member 200 is tightly attached to the outer wall of the steel pipe pile 2, cement slurry is further poured into the accommodating cavity 310, and the cement slurry flows from the opening to the annular space 3, thereby completing the grouting between the sleeve 1 and the steel pipe pile 2.
From this, accomplish this marine grout auxiliary device's installation work on land after, when carrying out the grout between sleeve 1 and steel-pipe pile 2 on sea, this marine grout auxiliary device will press from both sides tightly in steel-pipe pile 2 through driving second shutoff piece 200 earlier, accomplishes the temporary fixation of jacket and the shutoff of grout bottom, need not operating personnel and dive and carry out extra operation under water, has improved the efficiency of construction, guarantee operating personnel's safety. Meanwhile, the offshore grouting auxiliary device is not required to be driven by other power sources such as hydraulic power or electric power, the structure is simple and reliable, and the construction cost is reduced.
In some embodiments of the present invention, the opening is a through hole 311 formed in the baffle 300, the second blocking piece 200 can block and open the through hole 311 by sliding, and when the second blocking piece 200 is tightly attached to the outer wall of the steel pipe pile 2, the through hole 311 is opened to communicate the accommodating cavity 310 with the annular space 3 between the sleeve 1 and the steel pipe pile 2.
For example, as shown in fig. 3 to 6, one end of the baffle 300 close to the steel pipe pile 2 is provided with a plurality of through holes 311, and the plurality of through holes 311 are uniformly distributed along the circumferential direction of the baffle 300. Fig. 6 shows the structure of the sleeve 1 without cement paste, the second blocking element 200 is close to the sleeve 1, and the through hole 311 is not connected to the receiving cavity 310 due to the blocking of the second blocking element 200. Grout is poured from the right side of the accommodating cavity 310 through the grouting pipeline, and the second plugging piece 200 is pushed to slide leftwards and is close to the steel pipe pile 2. Until as shown in fig. 3 to 5, the second plugging member 200 is tightly attached to the outer wall of the steel pipe pile 2, at this time, the through hole 311 is opened to communicate the accommodating cavity 310 with the annular space 3 between the sleeve 1 and the steel pipe pile 2, cement slurry is further poured into the accommodating cavity 310, and the cement slurry flows to the annular space 3 through the through hole 311, thereby completing the grouting between the sleeve 1 and the steel pipe pile 2.
It is conceivable that the gap 312 may be formed by offsetting the second plugging member 200 from the baffle 300, and the gap 312 is used as an opening for communicating the receiving cavity 310 with the annular space 3 between the sleeve 1 and the steel pipe pile 2. For example, as shown in fig. 7 and 8, the inner diameter of the baffle 300 is larger than the inner diameter of the first block piece 100, that is, the distance between the baffle 300 and the steel pipe pile 2 is larger than the distance between the first block piece 100 and the steel pipe pile 2, so that when the second block piece 200 is closely attached to the outer wall of the steel pipe pile 2, the second block piece 200 blocks the gap 110 between the first block piece 100 and the steel pipe pile 2, and the second block piece 200 is offset from the baffle 300, and the formed gap 312 is offset to communicate the accommodation chamber 310 with the annular space 3 between the sleeve 1 and the steel pipe pile 2. Fig. 8 is a schematic structural view when cement paste is not poured in, the second blocking piece 200 is close to the sleeve 1, at this time, the second blocking piece 200 is tightly attached to the baffle 300, and cement paste is poured from the right side of the accommodating cavity 310 through the grouting pipeline to push the second blocking piece 200 to slide leftwards and be close to the steel pipe pile 2. Until the second blocking piece 200 clings to the outer wall of the steel pipe pile 2 as shown in fig. 7, cement slurry is further poured into the accommodating cavity 310, and the cement slurry flows to the annular space 3 through the gap 312, so that the grouting between the sleeve 1 and the steel pipe pile 2 is completed.
In some embodiments of the present invention, the grouting line is communicated with the accommodating chamber 310 through a grouting port, and the grouting port is opened on the sidewall of the sleeve 1. Specifically, four grouting ports are provided, and the grouting ports correspond to the second plugging members 200 one to one. Namely, four grouting ports are uniformly distributed along the circumferential direction of the sleeve 1, so that grouting is uniformly performed from the grouting pipeline into the accommodating cavity 310, the four second plugging pieces 200 are pushed to synchronously slide towards the steel pipe pile 2, the jacket does not deviate when the second plugging pieces 200 are clamped on the steel pipe pile 2, and the accuracy of subsequently leveling the jacket is ensured.
In some embodiments of the present invention, one end of the second plugging member 200 close to the steel pipe pile 2 is provided with a rubber pad 210. For example, as shown in fig. 3 to 8, when the second block piece 200 is closely attached to the outer wall of the steel pipe pile 2, the rubber pad 210 is in contact with the outer wall of the steel pipe pile 2, so that the second block piece 200 and the steel pipe pile 2 are more reliably sealed, and the cement paste is prevented from leaking downward.
In some embodiments of the present invention, a guide rod 220 is disposed on a side of the second plugging member 200 close to the sleeve 1, the guide rod 220 is disposed along a radial direction of the sleeve 1, and the guide rod 220 is disposed through the sleeve 1. For example, as shown in fig. 4 and 5, the second block piece 200 can only move in the radial direction of the sleeve 1 due to the arrangement of the guide rod 220, thereby preventing the second block piece 200 from shifting during the movement.
In some embodiments of the present invention, the first blocking element 100 is provided with a plurality of ribs 120 at the lower end thereof, and the ribs 120 are uniformly distributed along the circumferential direction of the first blocking element 100. For example, as shown in fig. 3 and 5, the ribs 120 increase the rigidity of the first closure 100, and prevent the first closure 100 from being excessively deformed downward, which may result in leakage of cement slurry from the lower end of the receiving cavity 310.
The construction method applying the offshore grouting auxiliary device according to the embodiment of the invention comprises the following steps:
hoisting a jacket into the sea by a crane ship, wherein the jacket is provided with four pile feet, a sleeve 1 is arranged on the pile feet, a steel pipe pile 2 is inserted into the sleeve 1, and the steel pipe pile 2 is driven into the seabed;
primarily leveling the jacket;
grouting the accommodating cavity 310 through the grouting pipeline, and pushing the second plugging piece 200 to be close to the steel pipe pile 2 along the radial direction of the sleeve 1 by the grouted cement slurry until the second plugging piece 200 is tightly attached to the outer wall of the steel pipe pile 2;
accurately leveling the jacket;
further grout is filled into the accommodating cavity 310 through a grout pipe, and grout overflows from the opening and flows into the annular space 3.
Specifically, the jacket is firstly hung on the sea bed surface, the jacket is in contact with the sea bed surface through the anti-sinking boxes arranged at the four pile feet, and the jacket is easy to deflect at the moment because the sea bed surface is usually a thick silt layer. The sleeve 1 is arranged outside the four pile feet of the jacket, the steel pipe pile 2 is inserted into the sleeve 1, and in the pile inserting process, the second plugging piece 200 is located at a position close to the sleeve 1, so that the second plugging piece 200 cannot interfere with the pile inserting of the steel pipe pile 2. However, the steel pipe pile 2 inevitably collides with the sleeve 1, so that the jacket is offset, and at this time, the jacket needs to be primarily leveled by using equipment such as a crane. Grout to holding chamber 310 through the grout pipeline after preliminary leveling, grout flows into holding chamber 310 through each grout mouth, promotes four second shutoff pieces 200 and follows sleeve 1's radial synchronous being close to steel-pipe pile 2, until four second shutoff pieces 200 all hug closely in the outer wall of steel-pipe pile 2, four second shutoff pieces 200 press from both sides tightly with steel-pipe pile 2 this moment, have played the effect of temporary fixation jacket. At this time, the jacket is accurately leveled by the crane, grouting is further performed into the accommodating cavity 310 after the accurate leveling, at this time, due to the movement of the second plugging member 200, the upper end of the accommodating cavity 310 is provided with an opening, and cement slurry overflows from the opening and flows into the annular space 3 between the sleeve 1 and the steel pipe pile 2.
In addition, the accommodating cavities 310 at the pile feet can be grouted one by one, and the jacket is leveled once the grouting of the accommodating cavities 310 at one pile foot is completed, so that the jacket is further ensured not to deviate. The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. An offshore grouting aid, comprising:
the first plugging piece (100) is annular, the first plugging piece (100) is arranged on the inner wall of the sleeve (1), and a gap (110) is reserved between the first plugging piece (100) and the steel pipe pile (2);
the second plugging pieces (200) are arranged on the inner wall of the sleeve (1) in a sliding mode, the second plugging pieces (200) are uniformly distributed along the circumferential direction of the sleeve (1), the second plugging pieces (200) are arc-shaped, the second plugging pieces (200) are located at the upper end of the first plugging piece (100), the second plugging pieces (200) can slide along the radial direction of the sleeve (1), and when the second plugging pieces (200) are tightly attached to the outer wall of the steel pipe pile (2), the second plugging pieces (200) plug the gaps (110) between the first plugging piece (100) and the steel pipe pile (2); and
baffle (300), baffle (300) are the ring form, baffle (300) set up on sleeve (1) inner wall, baffle (300) are located second closure upper end, sleeve (1) first closure (100) second closure (200) with baffle (300) enclose into holding chamber (310) of outer wall, the grout pipeline with holding chamber (310) intercommunication, second closure (200) all hug closely in during steel-pipe pile (2) outer wall, holding chamber (310) upper end has the opening, the opening makes holding chamber (310) with sleeve (1) with annular space (3) intercommunication between steel-pipe pile (2).
2. The offshore grouting aid device of claim 1, wherein the opening is a through hole (311) formed in the baffle (300), the second plugging piece (200) covers and opens the through hole (311) by sliding, and when the second plugging pieces (200) are tightly attached to the outer wall of the steel pipe pile (2), the through hole (311) is opened to communicate the accommodating cavity (310) with the annular space (3) between the sleeve (1) and the steel pipe pile (2).
3. The offshore grouting aid of claim 1, wherein when the second plugging member (200) is tightly attached to the outer wall of the steel pipe pile (2), the second plugging member (200) is staggered from the baffle (300), the opening is a gap (312) between the baffle (300) and the second plugging member (200) in the radial direction of the sleeve (1), and the gap (312) enables the accommodating cavity (310) to be communicated with the annular space (3) between the sleeve (1) and the steel pipe pile (2).
4. Offshore grouting aid device according to claim 1, characterised in that the second block piece (200) is provided with four.
5. Offshore grouting aid according to claim 1, characterised in that the grouting line communicates with the housing chamber (310) through a grouting opening provided in the side wall of the sleeve (1).
6. An offshore grouting aid device as claimed in claim 5, wherein a plurality of grouting ports are provided, and the grouting ports correspond to the second plugging members (200) one by one.
7. Offshore grouting aid according to claim 1, characterised in that a rubber pad (210) is arranged at one end of the second plugging piece (200) close to the steel pipe pile (2).
8. Offshore grouting aid device according to claim 1, characterised in that a guide bar (220) is arranged on the second plug (200) near the sleeve (1), the guide bar (220) being arranged in the radial direction of the sleeve (1), the guide bar (220) being arranged through the sleeve (1).
9. Offshore grouting aid device according to claim 1, characterised in that the lower end of the first piece (100) is provided with a number of ribs (120), said ribs (120) being evenly distributed along the circumference of the first piece (100).
10. A construction method applying the marine grouting aid according to any one of claims 1-9, comprising the steps of:
hoisting a jacket into the sea by a crane ship, wherein the jacket is provided with four pile feet, the sleeve (1) is arranged on the pile feet, the steel pipe pile (2) is inserted into the sleeve (1), and the steel pipe pile (2) is driven into the seabed;
primarily leveling the jacket;
grouting the accommodating cavity (310) through the grouting pipeline, wherein the grouted cement slurry pushes the second plugging piece (200) to be close to the steel pipe pile (2) along the radial direction of the sleeve (1) until the second plugging piece (200) is tightly attached to the outer wall of the steel pipe pile (2);
accurately leveling the jacket;
grouting is conducted on the containing cavity (310) through the grouting pipeline, and cement slurry overflows from the opening and flows into the annular space (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111204220.2A CN114045836B (en) | 2021-10-15 | 2021-10-15 | Offshore grouting auxiliary device and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111204220.2A CN114045836B (en) | 2021-10-15 | 2021-10-15 | Offshore grouting auxiliary device and construction method |
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| CN114045836A CN114045836A (en) | 2022-02-15 |
| CN114045836B true CN114045836B (en) | 2022-09-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103967036B (en) * | 2014-05-07 | 2016-12-07 | 中国水电顾问集团华东勘测设计研究院有限公司 | Stake and sleeve grouting attachment structure and construction method thereof for offshore wind farm |
| CN109295980A (en) * | 2018-10-09 | 2019-02-01 | 中交上海港湾工程设计研究院有限公司 | Stake method jacket underwater grouting pipeline system and grout sealing method after one kind |
| CN209066440U (en) * | 2018-10-09 | 2019-07-05 | 中交上海港湾工程设计研究院有限公司 | Stake method jacket underwater grouting pipeline system after one kind |
| CN110241826A (en) * | 2019-07-01 | 2019-09-17 | 中交港湾（上海）科技有限公司 | The straight stake jacket-type jacket underwater grouting construction system of first stake method and construction method |
| CN111663560B (en) * | 2020-06-24 | 2021-08-03 | 浙江大学 | Underwater filling sealing system adopting expanded high polymer and sealing method thereof |
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