CN111101496A - Construction process for installing deepwater jacket based on attached pile stabilizing device - Google Patents
Construction process for installing deepwater jacket based on attached pile stabilizing device Download PDFInfo
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- CN111101496A CN111101496A CN201911416180.0A CN201911416180A CN111101496A CN 111101496 A CN111101496 A CN 111101496A CN 201911416180 A CN201911416180 A CN 201911416180A CN 111101496 A CN111101496 A CN 111101496A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
- E02B17/027—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto steel structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
- E02D27/525—Submerged foundations, i.e. submerged in open water using elements penetrating the underwater ground
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/26—Placing by using several means simultaneously
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0039—Methods for placing the offshore structure
- E02B2017/0043—Placing the offshore structure on a pre-installed foundation structure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0056—Platforms with supporting legs
- E02B2017/006—Platforms with supporting legs with lattice style supporting legs
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0091—Offshore structures for wind turbines
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- General Engineering & Computer Science (AREA)
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- Structural Engineering (AREA)
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Abstract
The invention discloses a construction process for installing a deepwater jacket based on an attached pile stabilizing device, which comprises the following main process flows of putting the deepwater jacket sleeved with the attached pile stabilizing device into the seabed, allowing the deepwater jacket to enter mud by virtue of self weight, and attaching the attached pile stabilizing device to the deepwater jacket to form an underwater pile stabilizing device; then vertically hoisting the steel pipe pile foundation into water, and only rotating the steel pipe pile foundation by an angle relative to the circle center of the circle of the four support legs of the deepwater jacket through the hoisting boom to realize the positioning of the steel pipe pile foundation of the pile, wherein the steel pipe pile foundation can fall into a pile stabilizing sleeve by means of self weight; after the pile sinking of the steel pipe pile foundation is finished, firstly, the attached pile stabilizing device is lifted out of the water surface; and then the deepwater jacket is vertically lifted, the pile leg is pulled out of the mud surface, horizontally rotates for a certain angle and is inserted into the steel pipe pile foundation. By applying the construction process provided by the invention, the construction efficiency is improved, the construction cost is reduced, and the problem that the deepwater jacket and the steel pipe pile foundation are difficult to butt under water is solved.
Description
Technical Field
The invention relates to the technical field of underwater pile stabilization of deepwater jacket, in particular to a construction process for installing a deepwater jacket based on an attached pile stabilization device.
Background
Under the large situation of energy conservation and emission reduction, coping with climate change, energy shortage and increasingly severe energy supply safety situation, the offshore wind resource is taken as a green energy source, has the advantages of stable wind resource, easy large-scale development and the like, and is currently applied in China on a large scale.
At present, offshore wind farms built in China adopt offshore wind farms, the water depth condition is generally less than 10m, and the supporting structure type is mainly a high pile cap foundation and a single pile foundation. With the development of offshore wind farms, the offshore distances and the water depths of the wind farms are continuously increased, and the conventional offshore infrastructure type is difficult to meet the requirements of deep-sea wind energy development. In the sea area with the water depth of about 30m and deeper, the jacket foundation has better economic advantages relatively.
In the traditional interpolation type pile-first method jacket installation construction, a guide positioning frame pile stabilizing device is utilized for pile stabilization, the construction process flow is shown in figures 1a-1d, firstly, the guide positioning frame pile stabilizing device 4 is hoisted and placed into the sea bottom (figure 1 a); then, driving the temporary positioning pile 5 into the seabed by using a vibration hammer for positioning by using a guide positioning frame pile stabilizing device, and fixedly connecting the temporary positioning pile 5 with the guide positioning frame pile stabilizing device 4 (figure 1b) by using a special structure or by welding; then, sinking and driving a steel pipe pile foundation 3 (figure 1c) by using a vibration hammer, after the driving is finished, removing the connection between the temporary positioning pile and the guide positioning frame pile stabilizing device, then pulling out the temporary positioning pile by using the vibration hammer, and lifting away the guide positioning frame pile stabilizing device; and finally, the deepwater jacket 2 and the steel pipe pile foundation 3 are butted underwater, and the jacket installation is completed (fig. 1 d).
In the traditional interpolation type pile-first method jacket installation and construction, when the pile stabilizing device 4 of the guide positioning frame is built, the pile stabilizing device needs to be placed into the seabed firstly, the device is exposed 1-2m above the water surface, so the number and the size of the device need to be determined according to the water depth, the deeper the water is, the more the number and the larger the size of the needed device are, and the applicability to the foundation construction of the deepwater jacket 2 is lower. In addition, the pile stabilizing device 4 of the guide positioning frame has complex erection and dismantling process, long erection and dismantling time, low construction efficiency and high ship machine cost.
Disclosure of Invention
The invention provides a construction process for installing a deepwater jacket by using an attached pile stabilizing device, which aims at solving the problems of high construction cost, low efficiency and difficult underwater butt joint of a deepwater jacket and a steel pipe pile foundation in the installation and construction of an interpolation type pile-first method jacket in the prior art.
In order to achieve the aim, the invention provides a construction process for installing a deepwater jacket based on an attached pile stabilizing device, which mainly comprises the following construction process flows of:
(1) the attached pile stabilizing device is sleeved on the deepwater jacket in advance on the shore;
(2) hoisting and loading launching water of the deepwater jacket sleeved with the attached pile stabilizing device to a surface of the sea bed at a corresponding construction position;
(3) the deepwater conduit frame enters mud by self weight under the action of self gravity and forms a pile stabilizing platform together with the attached pile stabilizing device;
(4) sinking the steel pipe pile foundation: and vertically hoisting the steel pipe pile foundation into a pile stabilizing sleeve of the attached pile stabilizing device, driving the steel pipe pile foundation to a pile top elevation by using a vibration hammer, wherein the circle centers of the four steel pipe pile foundations and the circle centers of the four support legs of the deepwater jacket are positioned on the same circumference.
(5) The attached pile stabilizing device is lifted out of the water: and (4) hoisting the attached pile stabilizing device out of the water surface, and separating the attached pile stabilizing device from the deepwater jacket.
(6) Hoisting and rotating the deepwater jacket: the deepwater jacket is vertically lifted, the supporting legs are pulled out of a mud surface, and: horizontally rotating for a certain angle;
(7) inserting the support legs of the deepwater jacket into the foundation of the steel pipe pile: vertically lowering the deepwater jacket which rotates by a certain angle, and respectively inserting four steel pipe pile foundations into four support legs of the deepwater jacket;
(8) and (5) grouting underwater, and connecting the steel pipe pile foundation and the deepwater jacket.
Further, the attached pile stabilizing device comprises four box-shaped frames and four corner supporting pieces, wherein the four box-shaped frames are sequentially connected end to end; the four corner supporting pieces are fixedly arranged at four corners in the box-shaped framework body and respectively correspond to the four supporting legs on the deepwater jacket, and each corner supporting piece is provided with an arc-shaped edge; and the four sides of the four box-shaped frame bodies are respectively provided with a pile stabilizing sleeve.
Furthermore, when the attached pile stabilizing device is assembled with the deepwater jacket, the centers of the arc sides of the arc-shaped triangular plates on the four corner supporting pieces on the attached pile stabilizing device are respectively superposed with the centers of the corresponding supporting legs on the deepwater jacket, and meanwhile, the centers of the four pile stabilizing sleeves on the four box-shaped frame bodies and the centers of the four supporting legs of the deepwater jacket are on the same circumference, and the center distance is as small as possible.
According to the construction process for installing the deepwater jacket based on the attached pile stabilizing device, the attached pile stabilizing device is attached to the deepwater jacket, the pile is positioned by means of the structure of the jacket, a temporary positioning pile is not needed, the problems that a full-circle-rotation crane ship needs to be configured, the temporary positioning pile needs to be beaten and pulled by a vibration hammer, and the investment of ship machinery equipment is large in the traditional pile stabilizing device for the guiding and positioning frame and the manufacturing height and the number of layers of the traditional pile stabilizing device for the guiding and positioning frame are influenced by the depth of water are solved, the use of the ship machinery equipment is reduced, and the construction cost is reduced.
The construction process for installing the deepwater jacket based on the attached pile stabilizing device solves the problems of complicated process for building and dismantling and low construction efficiency of the traditional guide positioning frame, simplifies the construction flow and improves the construction efficiency.
The construction process for installing the deepwater jacket based on the attached pile stabilizing device solves the problem that the deepwater jacket and a steel pipe pile foundation are difficult to butt under water.
Drawings
The invention is further described below in conjunction with the appended drawings and the detailed description.
Fig. 1a is a schematic diagram illustrating hoisting of a deepwater jacket in a construction process flow of installing the deepwater jacket by using a guide positioning frame pile stabilizing device in the prior art;
FIG. 1b is a schematic diagram illustrating the insertion and driving of a temporary positioning pile in a conventional construction process for installing a deepwater jacket by using a pile stabilizing device of a guide positioning frame;
FIG. 1c is a schematic view of a steel pipe pile sinking in a construction process flow of installing a deepwater jacket by using a guide positioning frame pile stabilizing device in the prior art;
fig. 1d is a schematic view illustrating a butt joint of a jacket and a steel pipe pile in a construction process flow of installing a deepwater jacket by using a guide positioning frame pile stabilizing device in the prior art;
FIG. 2 is a schematic structural diagram of the attached pile stabilizing device in this example;
FIG. 3 is a schematic structural view of the deepwater jacket of the present example;
FIG. 4 is a schematic diagram of the attached pile stabilizing device attached to a deep water jacket according to the present embodiment;
FIG. 5 is a schematic diagram showing the positions of the center of a pile-stabilizing sleeve and the center of a deep water jacket leg in the example;
FIG. 6 is a schematic view of the construction process for installing a deepwater jacket by using an attached pile-stabilizing device in the present example;
fig. 7 is a schematic top view of the attachment pile stabilizer and deepwater jacket set in this example;
fig. 8 is a schematic view of the deep water jacket self-weight mud feeding and attached pile stabilizing device forming a pile stabilizing platform in the present example;
FIG. 9 is a schematic view of the steel pipe pile foundation being hoisted into the pile stabilizing sleeve in this example;
FIG. 10 is a schematic view of the pile sinking of the steel pipe pile foundation in this example;
FIG. 11 is a schematic view of the completion of pile sinking of the whole steel pipe pile foundation in this example;
FIG. 12 is a schematic view of the attached pile stabilizing device being lifted out of the water surface in this example;
FIG. 13 is a schematic view of the deepwater jacket hoisting rotation in this example;
fig. 14 is a schematic view of the foundation of the steel pipe pile inserted into the leg of the deep water jacket in the present example.
The meaning of the reference numerals in the figures: the device comprises an attached pile stabilizing device 1, a box-shaped frame 1-1, a pile stabilizing sleeve 1-1, corner supporting pieces 1-2, a set square 1-2-1, a deep water jacket 2, steel supporting tubes 2-1, inclined supporting tubes 2-2, a transition connecting section 2-3, a platform 2-4, supporting legs 2-5, supporting plates 2-6, a steel pipe pile foundation 3, a guide positioning frame pile stabilizing device 4, a temporary positioning pile 5, a water surface A, a mud surface B, a pile top elevation C and a deep water jacket rotation angle theta.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
When the traditional pile stabilizing device of the guide positioning frame in the prior art is used for stabilizing a pile of a deepwater jacket, the splicing height is required, a crane ship and a vibration hammer are additionally arranged when the pile stabilizing device is erected and dismantled, and the deepwater jacket and a steel pipe pile foundation are difficult to butt under water.
As shown in fig. 2, the attached pile stabilizing device 1 in this example is constituted by four box frames 1-1 and four corner supports 1-2 connected by bolts.
The four box-shaped frames 1-1 are sequentially connected end to end, the inner sides of the joints are fixedly connected through the corner supporting pieces 1-2 respectively, and the distribution structure of the four corner supporting pieces 1-2 corresponds to the distribution structure of the four legs 2-5 on the deepwater jacket 2, so that the pile stabilizing device corresponding to the square frame structure of the four legs 2-5 on the deepwater jacket 2 is formed.
Wherein, each box frame 1-1 is provided with a pile stabilizing sleeve 1-1-1, and the bottom plate of the corner support 1-2 is a triangle plate 1-2-1 with one arc side.
As shown in fig. 3, the deepwater jacket 2 in this example is a steel truss structure, and mainly comprises four oblique steel supporting tubes 2-1, three layers of oblique supporting tubes 2-2, a transition connecting section 2-3, a platform 2-4, supporting legs 2-5 and supporting plates 2-6, wherein the supporting plates 2-6 are arranged in a circular shape, and are welded on the supporting legs 2-5 for supporting and limiting the attached deepwater jacket underwater pile stabilizer 1 in the present invention.
Referring to fig. 4, in order to enable the attached pile stabilizing device 1 to be stably attached to the deepwater jacket 2, when the attached pile stabilizing device 1 is assembled with the deepwater jacket 2, the centers of the arc-shaped edges of the arc-shaped triangular plates 1-2-1 on the four corner supporting pieces 1-2 of the attached pile stabilizing device coincide with the centers of the corresponding supporting legs 2-5 on the deepwater jacket 2 respectively.
Referring to fig. 5, the centers of four pile sleeves 1-1-1 on four box frames 1-1 in the attached pile-stabilizing device 1 are on the same circumference with the centers of four legs 2-5 of the deepwater jacket 2, and the center-to-center distance is as small as possible.
The pile stabilizing device 1 formed by the method can be firmly attached to the deepwater jacket 2 by matching the four arc-shaped corner supporting pieces 1-2 with the corresponding supporting legs 2-5 on the deepwater jacket 2.
When the pile stabilizing device 1 and the deepwater jacket 2 are matched with each other to be implemented concretely, before the jacket 2 enters water, the attached pile stabilizing device 1 is sleeved on the deepwater jacket 2, the center of the arc-shaped edge of the triangular plate 1-2-1 on the corner supporting piece 1-2 of the attached pile stabilizing device is overlapped with the center of the supporting leg 2-5 of the deepwater jacket, and after the pile stabilizing device 1 is sleeved, the attached pile stabilizing device 1 is attached to the supporting plate 2-6 of the deepwater jacket 2.
During construction, the deepwater jacket 2 is placed into the sea bottom, the deepwater jacket 2 is filled with mud by means of self weight, the attached pile stabilizing device 1 is attached to the deepwater jacket 2 at the moment, and an underwater pile stabilizing device is formed, as the four pile stabilizing sleeves 1-1-1 on the attached pile stabilizing device 1 and the centers of the four support legs 2-5 of the deepwater jacket 2 are on the same circumference, as shown in fig. 5, when the steel pipe pile foundation 3 is hoisted into water, the steel pipe pile foundation 3 can be positioned only by rotating the center of a circle where the steel pipe pile foundation 3 is located relative to the four support legs 2-5 by an angle theta through the hoisting boom, so that the steel pipe pile foundation 3 falls into the pile stabilizing sleeves 1-1-1-1 by means of self weight, and the pile stabilizing sleeves 1-1-1 play a role in stabilizing when the steel pipe pile foundation 3 is sunk.
After the steel pipe pile foundation 3 is sunk, the attached pile stabilizing device 1 is firstly lifted out of the water surface and separated from the deepwater jacket 2, the deepwater jacket 2 is lifted vertically after the next pile position is reused, the pile legs 2-5 are pulled out of the mud surface and horizontally rotate for a certain angle theta and are inserted into the steel pipe pile foundation 3.
The following describes a construction process flow for installing the deepwater jacket based on the attached pile stabilizing device with reference to a specific diagram.
As shown in fig. 6, the main construction process flow comprises: the pile stabilizing device is sleeved on the deepwater jacket, the deepwater jacket and the pile stabilizing device are hoisted to be discharged, the self-weight sludge enters the deepwater jacket to form a pile stabilizing platform, the steel pipe pile foundation is sunk, the pile stabilizing device is hoisted out of the water surface, the deepwater jacket is hoisted to rotate, the support legs of the deepwater jacket are inserted into the steel pipe pile foundation, and the underwater grouting is carried out.
Step 1: the attached pile stabilizing device is sleeved on the deepwater jacket.
As shown in fig. 7, the attached pile stabilizer 1 and the deepwater jacket 2 are pre-sleeved together on the shore, and the attached pile stabilizer 1 finally falls on the support plates 2-6 on the legs of the deepwater jacket. The centers of the four pile stabilizing sleeves 1-1-1 of the attached pile stabilizing device 1 and the centers of the four support legs 2-5 of the deepwater jacket are on the same circumference, and the center distance is as small as possible, so that the structural design can assist the deepwater jacket 2 and the steel pipe pile foundation 3 to be accurately butted underwater.
Step 2: and hoisting the deepwater jacket and the attached pile stabilizing device for launching.
After the deepwater jacket 2 sleeved with the attached pile stabilizing device 1 is transported to a pile position, the deepwater jacket 2 is hoisted to be launched, the attached pile stabilizing device 1 is launched into water, and the deepwater jacket 2 is slowly lowered to the surface of the sea bed at the corresponding construction position.
And step 3: and (5) self-weight mud entering to form a pile stabilizing platform.
As shown in fig. 8, under the action of the self gravity of the deepwater jacket 2, the four legs 2-5 of the deepwater jacket 2 are vertically inserted into the mud surface, the bottom surface of the attached pile stabilizing device 1 is contacted with the mud surface, and the attached pile stabilizing device 1 is positioned by the structure of the deepwater jacket 2 to form a stable pile stabilizing device.
And 4, step 4: and (5) sinking the pile on the steel pipe pile foundation.
As shown in fig. 9, the steel pipe pile foundation 3 is vertically hung into the pile stabilizing sleeve 1-1-1, and the steel pipe pile foundation 3 is driven to the pile top elevation by a vibratory hammer, as shown in fig. 10. The underwater pile sinking construction of all the steel pipe pile foundations 3 is completed in sequence, the schematic diagram of the completed pile sinking of all the steel pipe pile foundations 3 is shown in fig. 11, and at the moment, the circle centers of the four steel pipe pile foundations 3 and the circle centers of the four support legs 2-5 of the deepwater jacket are on the same circumference.
And 5: the attached pile stabilizing device is lifted out of the water surface.
As shown in fig. 12, the attached pile stabilizing device 1 is lifted out of the water surface by the lifting boom, and is separated from the deepwater jacket 2.
Step 6: the deepwater jacket is lifted and rotated.
As shown in fig. 13, the centers of the four steel pipe pile foundations 3 and the centers of the four legs 2-5 of the deepwater jacket are on the same circumference, so that the deepwater jacket 2 is vertically lifted by only the lifting boom, the legs 2-5 are pulled out of the mud surface, and the steel pipe pile foundations 3 can be precisely butted by rotating horizontally by a certain angle θ.
And 7: the support legs of the deepwater jacket are inserted into the steel pipe pile foundation.
As shown in fig. 14, the deepwater jacket 2 rotated by a certain angle θ is vertically lowered, and four steel pipe pile foundations 3 are respectively inserted into four legs 2-5 of the deepwater jacket 2.
And 8: underwater grouting
And finally, performing underwater grouting construction, connecting the steel pipe pile foundation 3 with the deepwater jacket 2, and completing construction for installing the deepwater jacket 2 by using the attached pile stabilizing device 1.
According to the construction process for installing the deepwater jacket based on the attached pile stabilizing device, the attached pile stabilizing device forms the stable pile stabilizing platform by means of the structure of the deepwater jacket, the pile stabilizing platform is convenient to set up and dismantle, a temporary positioning pile does not need to be plugged and pulled out, the use of ship equipment is reduced, the construction cost is reduced, the construction work efficiency is improved, and the construction process flow is optimized while the underwater pile sinking precision of the steel pipe pile is ensured.
The construction process for installing the deepwater jacket based on the attached pile stabilizing device provided by the invention is suitable for deepwater environment, has higher reliability, and can effectively solve the problem of difficult underwater butt joint of the deepwater jacket and a steel pipe pile foundation.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. A construction process for installing a deepwater jacket based on an attached pile stabilizing device comprises the following main construction process flows:
(1) the attached pile stabilizing device is sleeved on the deepwater jacket in advance on the shore;
(2) hoisting and loading launching water of the deepwater jacket sleeved with the attached pile stabilizing device to a surface of the sea bed at a corresponding construction position;
(3) the deepwater conduit frame enters mud by self weight under the action of self gravity and forms a pile stabilizing platform together with the attached pile stabilizing device;
(4) sinking the steel pipe pile foundation: vertically hoisting the steel pipe pile foundation into a pile stabilizing sleeve of the attached pile stabilizing device, driving the steel pipe pile foundation to a pile top elevation by using a vibration hammer, wherein the circle centers of the four steel pipe pile foundations and the circle centers of the four support legs of the deepwater jacket are positioned on the same circumference;
(5) the attached pile stabilizing device is lifted out of the water: lifting the attached pile stabilizing device out of the water surface and separating the attached pile stabilizing device from the deepwater jacket;
(6) hoisting and rotating the deepwater jacket: vertically hoisting the deepwater jacket, pulling out the mud surface by using supporting legs, and horizontally rotating for a certain angle;
(7) inserting the support legs of the deepwater jacket into the foundation of the steel pipe pile: vertically lowering the deepwater jacket which rotates by a certain angle, and respectively inserting four steel pipe pile foundations into four support legs of the deepwater jacket;
(8) and (5) grouting underwater, and connecting the steel pipe pile foundation and the deepwater jacket.
2. The construction process for installing the deepwater jacket based on the attached pile stabilizing device as claimed in claim 1, wherein the attached pile stabilizing device comprises four box-shaped frames and four corner supports, and the four box-shaped frames are sequentially connected end to end; the four corner supporting pieces are fixedly arranged at four corners in the box-shaped framework body and respectively correspond to the four supporting legs on the deepwater jacket, and each corner supporting piece is provided with an arc-shaped edge; and the four sides of the four box-shaped frame bodies are respectively provided with a pile stabilizing sleeve.
3. The construction process for installing the deepwater jacket based on the attached pile stabilizing device as claimed in claim 1, wherein when the attached pile stabilizing device is assembled with the deepwater jacket, the centers of the arc sides of the arc-shaped triangular plates on the four corner supporting members of the attached pile stabilizing device are respectively coincided with the centers of the corresponding supporting legs on the deepwater jacket, and meanwhile, the centers of the four pile stabilizing sleeves on the four box-shaped frame bodies are on the same circumference as the centers of the four supporting legs of the deepwater jacket, and the center distance is as small as possible.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911416180.0A CN111101496A (en) | 2019-12-31 | 2019-12-31 | Construction process for installing deepwater jacket based on attached pile stabilizing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911416180.0A CN111101496A (en) | 2019-12-31 | 2019-12-31 | Construction process for installing deepwater jacket based on attached pile stabilizing device |
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| CN111101496A true CN111101496A (en) | 2020-05-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111945767A (en) * | 2020-07-24 | 2020-11-17 | 中交第三航务工程局有限公司 | Construction process of pile-first outer jacket type jacket of offshore wind power booster station |
| CN115305940A (en) * | 2022-07-07 | 2022-11-08 | 中交第三航务工程局有限公司 | Construction method of jacket foundation of split type offshore booster station |
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| CN108824471A (en) * | 2018-06-29 | 2018-11-16 | 浙江中交通力工程设计有限公司 | A kind of deep water drift net multi-column pier foundation and its construction method |
| CN109469089A (en) * | 2018-12-03 | 2019-03-15 | 中交三航（上海）新能源工程有限公司 | A kind of interpolation type offshore wind farm jacket basis carrying steady pipe casing and construction method |
| CN209538210U (en) * | 2018-12-03 | 2019-10-25 | 中交三航（上海）新能源工程有限公司 | A kind of interpolation type offshore wind farm jacket basis carrying steady pipe casing |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108824471A (en) * | 2018-06-29 | 2018-11-16 | 浙江中交通力工程设计有限公司 | A kind of deep water drift net multi-column pier foundation and its construction method |
| CN109469089A (en) * | 2018-12-03 | 2019-03-15 | 中交三航（上海）新能源工程有限公司 | A kind of interpolation type offshore wind farm jacket basis carrying steady pipe casing and construction method |
| CN209538210U (en) * | 2018-12-03 | 2019-10-25 | 中交三航（上海）新能源工程有限公司 | A kind of interpolation type offshore wind farm jacket basis carrying steady pipe casing |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111945767A (en) * | 2020-07-24 | 2020-11-17 | 中交第三航务工程局有限公司 | Construction process of pile-first outer jacket type jacket of offshore wind power booster station |
| CN115305940A (en) * | 2022-07-07 | 2022-11-08 | 中交第三航务工程局有限公司 | Construction method of jacket foundation of split type offshore booster station |
| CN115305940B (en) * | 2022-07-07 | 2024-04-05 | 中交第三航务工程局有限公司 | Construction method for jacket foundation of split offshore booster station |
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