CN112900405A - Mooring system applied to port water surface prefabricated platform and construction method - Google Patents
Mooring system applied to port water surface prefabricated platform and construction method Download PDFInfo
- Publication number
- CN112900405A CN112900405A CN202110077431.8A CN202110077431A CN112900405A CN 112900405 A CN112900405 A CN 112900405A CN 202110077431 A CN202110077431 A CN 202110077431A CN 112900405 A CN112900405 A CN 112900405A
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- China
- Prior art keywords
- cable
- prefabricated platform
- steel
- pile foundation
- pipe pile
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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
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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
-
- 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
- E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
- E02B17/06—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for immobilising, e.g. using wedges or clamping rings
-
- 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
-
- 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
Abstract
The invention relates to a mooring system and a construction method applied to a port water surface prefabricated platform, wherein the mooring system comprises a steel pipe pile foundation, a steel cable, a cable guider and a cable stranding device, wherein the steel pipe pile foundation is arranged below the prefabricated platform and is positioned below the water surface, and the elevation of a top plate is slightly higher than the position of a mud surface; the cable guide and the cable stranding equipment are arranged on the prefabricated platform, the lower end of the steel cable is connected with the steel pipe pile foundation, and the upper end of the steel cable penetrates through the prefabricated platform and is connected with the cable stranding equipment through the cable guide; the steel cable is restrained by the stranding equipment and is kept in a tight state for a long time, so that the displacement and the rotation of the prefabrication platform are limited. The pile foundation and steel cable combined mooring system of the prefabricated platform has the characteristics of low material cost, simple and convenient construction process, high construction efficiency, reusability, good economy and the like, and is favorable for popularization and application.
Description
Technical Field
The invention relates to a port water surface prefabricated platform, in particular to a mooring system applied to the port water surface prefabricated platform and a construction method.
Background
The port water surface prefabricated platform is mainly used for building and launching marine structures such as offshore wind power cylinder foundations, seabed lining platforms, barges and the like. After the marine structure on the prefabricated platform is built, the prefabricated platform sinks, and the special floating ship enters the field to transfer the marine structure to a destination in a floating mode. At present, the foundation types of port water surface prefabricated platforms mainly comprise reinforced concrete foundations, steel pipe pile foundations, anchoring foundations and other foundation types. The underwater construction process of the reinforced concrete foundation is complex, the construction period is long, and the reinforced concrete foundation cannot be reused; the steel pipe pile foundation needs to be piled, the steel consumption is large, the cost is high, and the steel pile is easy to interfere with a large-scale special floating ship; the design difficulty of the anchoring foundation is high, the cost of anchoring facilities is high, and the anchoring foundation is adopted to carry out leveling treatment on the seabed of the prefabricated platform area. The cost of the base material, the construction efficiency, the construction cost and the convenience of the special floating ship entering the field are main limiting factors of the existing prefabricated platform foundation type.
Disclosure of Invention
In order to solve the problems, the invention provides a mooring system combining a precast platform pile foundation and a steel cable and a construction method, which have the advantages of low manufacturing cost, simple construction and lower construction cost.
The technical scheme adopted by the invention is as follows: the utility model provides a mooring system for port surface of water prefabricated platform which characterized in that: the device comprises a steel pipe pile foundation, a steel cable, a cable guider and a cable stranding device, wherein the steel pipe pile foundation is arranged below a prefabricated platform and is positioned below the water surface, and the elevation of a top plate is slightly higher than the position of a mud surface; the cable guider and the cable stranding equipment are arranged on the prefabricated platform, the lower end of the steel cable is connected with the steel pipe pile foundation, and the upper end of the steel cable penetrates through the prefabricated platform and is connected with the cable stranding equipment through the cable guider; the steel cable is restrained by the stranding equipment and is kept in a tight state for a long time, so that the displacement and the rotation of the prefabrication platform are limited.
Preferably, the steel pipe pile foundation is of a cylindrical structure, and the top of the steel pipe pile foundation is sealed by a layer of thick steel plate.
Preferably, the steel pipe pile foundation is welded with a lifting lug, and the bottom end of the steel cable is provided with a shackle connected with the lifting lug.
Further, the lifting lug is arranged at a position 0.5m below the top of the steel pipe pile foundation pile.
Preferably, the fairlead is disposed about the opening of the prefabricated platform.
Preferably, the cabling device is a hydraulic winch or a manual winch.
Preferably, the steel cable is a steel cable for a ship, a composite material cable or a polymer material cable.
A construction method of a mooring system applied to a port water surface prefabricated platform is characterized by comprising the following steps: the method comprises the following steps:
1) after the steel pipe pile foundation is manufactured on land, launching into place by using a hoisting machine, and hammering the steel pipe pile foundation to a specified elevation by using a hydraulic pile hammer;
2) after the steel cable, the cable guider and the cable stranding equipment are manufactured, the steel cable, the cable guider and the cable stranding equipment are directly arranged on the prefabricated platform;
3) after the prefabricated platform reaches a designated position, a diver connects the end shackle of the steel cable with a lifting lug of the steel pipe pile foundation, and then the steel cable is gradually tightened by stranding equipment, so that the prefabricated platform is gradually positioned;
4) when the tidal level of the port changes, the length of the steel cable is adjusted through the stranding equipment, so that the steel cable can be in a tight state for a long time, and the stability of the prefabricated platform is ensured;
5) according to the demand of the ocean structure built on the prefabricated platform, if the prefabricated platform needs to sink to the bottom, the prefabricated platform can submerge in the low tide level of a port and in the calmer window period of stormy waves, the prefabricated platform can be stably located on a steel pipe pile foundation pile group due to the fact that the steel pipe pile foundation is far away from the edge of the vertical projection surface of the prefabricated platform, and reinforcing steel plates are arranged in the contact area of the prefabricated platform and the steel pipe pile foundation and on the periphery of the prefabricated platform;
6) after the prefabricated platform is submerged and located on the steel pipe pile foundation pile group, the large-scale special floating ship can enter the field to transport corresponding marine structures, and the floating ship cannot interfere with the prefabricated platform or the steel pipe pile foundation.
The beneficial effects obtained by the invention are as follows: the pile foundation and steel cable combined mooring system of the prefabricated platform has the characteristics of low material cost, simple and convenient construction process, high construction efficiency, reusability, good economy and the like, and is favorable for popularization and application.
Drawings
Fig. 1 is a schematic structural view of a mooring system of the present invention;
fig. 2 is a top view of the mooring system of the present invention;
FIG. 3 is a schematic view of the relative positions of the floating vessel and the pre-fabricated platform and mooring system;
in the figure: 1. a steel pipe pile foundation; 11. lifting lugs; 12. closing the plate; 2. a wire rope; 3. a cable guide; 4. a stranding device; 5. prefabricating a platform; 6. an offshore wind power barrel type foundation transition section; 7. an offshore wind power cylinder type foundation suction cylinder; 8. a floating vessel; 9. a block-shaped base pad.
Detailed Description
The invention will be further described with reference to the following drawings and specific embodiments.
As shown in fig. 1-2, the mooring system applied to the port water surface prefabricated platform of the invention comprises a steel pipe pile foundation 1, a steel cable 2, a cable guider 3 and a cable stranding device 4, wherein the steel pipe pile foundation 1 is arranged below a prefabricated platform 5 and is positioned below the water surface, and the elevation of a top plate of the steel pipe pile foundation 1 is slightly higher than the position of a mud surface; the cable guider 3 and the cable stranding equipment 4 are arranged on the prefabricated platform 5, the lower end of the steel cable 2 is connected with the steel pipe pile foundation 1, and the upper end of the steel cable penetrates through the prefabricated platform 5 and is connected with the cable stranding equipment 4 through the cable guider 3; the steel cable 2 is restrained by the stranding equipment 4, and the steel cable 2 is maintained in a tight state for a long time, so that the displacement and the rotation of the prefabrication platform 5 are limited.
In this embodiment, the steel pipe pile foundation 1 is a cylindrical structure, and a layer of thick steel plate (i.e., a sealing plate 12) is sealed at the top of the steel pipe pile foundation; the lifting lug 11 is welded on the pile body of the steel pipe pile foundation 1, the lifting lug 11 is arranged at a position about 0.5m downwards on the pile top of the steel pipe pile foundation 1, so that the lifting water is convenient to lift and connect with the steel cable 2, and the post pile pulling is recycled.
In this embodiment, the steel cable 2 is a conventional mooring steel cable for a ship, or a composite material cable, a polymer material cable, or a chain cable, or the like, and the terminal of the steel cable 2 is provided with a shackle, which facilitates the connection and detachment of the steel cable 2 and the lifting lug 11.
In this embodiment, the cable guide 3 is a roller guide, and is disposed around the opening of the prefabricated platform 5 to guide the direction of the steel cable 2 and reduce the wear of the steel cable 2.
Considering that the prefabricated platform 5 may need to be submerged to the mud surface, the cabling device 4 is selected to be a hydraulic winch or a hand-pulling winch instead of an electric winch.
According to the requirements of the prefabricated platforms 5, each prefabricated platform 5 can be provided with 3, 4 or more steel pipe pile foundations 1 and steel cables 2 combined mooring systems; for a single-set steel pipe pile foundation 1 and steel cable 2 combined mooring system, the number of the steel cables 2 can be configured to be 1, 2 or more, and the cable guider 3 and the cable stranding equipment 4 are adjusted correspondingly.
Referring to fig. 3, the construction method of the mooring system applied to the port water surface prefabricated platform of the invention comprises the following steps:
1) after the steel pipe pile foundation 1 is manufactured on land, a hoisting machine is used for launching into place, and a hydraulic pile hammer is used for hammering the steel pipe pile foundation 1 to a specified elevation;
2) after the steel cable 2, the cable guider 3 and the cable stranding equipment 4 are manufactured, the cable guider and the cable stranding equipment are directly arranged on the prefabricated platform 5;
3) after the prefabricated platform 5 reaches a designated position, a diver connects the tail end of the steel cable 2 with the lifting lug 11 of the steel pipe pile foundation 1 in a shackle mode, then the steel cable 2 is gradually tightened by the stranding equipment 4, and the prefabricated platform 5 is gradually positioned;
4) when the tidal level of the port changes, the length of the steel cable 2 is adjusted through the stranding equipment 4, so that the steel cable 2 can be in a tight state for a long time, and the stability of the prefabricated platform 5 is ensured;
5) according to the requirement of the marine structure built on the prefabricated platform 5, if the prefabricated platform 5 needs to sink to the bottom, the prefabricated platform can submerge in a low tide level of a port and in a calmer window period of stormy waves, and because the steel pipe pile foundation 1 has a wider distance from the edge of the vertical projection surface of the prefabricated platform 5, the prefabricated platform 5 can be stably located on a pile group of the steel pipe pile foundation 1, and reinforcing steel plates 51 are arranged in the contact area of the prefabricated platform 5 and the steel pipe pile foundation 1 and on the periphery of the prefabricated platform 5;
6) after the prefabricated platform 5 is submerged and located on the pile group of the steel pipe pile foundation 1, the large-scale special floating ship can enter the field to transport corresponding marine structures, and the floating ship cannot interfere with the prefabricated platform 5 or the steel pipe pile foundation 1.
The foregoing shows and describes the general principles and principal structural features of the present invention. The present invention is not limited to the above examples, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides a mooring system for port surface of water prefabricated platform which characterized in that: the device comprises a steel pipe pile foundation, a steel cable, a cable guider and a cable stranding device, wherein the steel pipe pile foundation is arranged below a prefabricated platform and is positioned below the water surface, and the elevation of a top plate is slightly higher than the position of a mud surface; the cable guider and the cable stranding equipment are arranged on the prefabricated platform, the lower end of the steel cable is connected with the steel pipe pile foundation, and the upper end of the steel cable penetrates through the prefabricated platform and is connected with the cable stranding equipment through the cable guider; the steel cable is restrained by the cable stranding equipment, and the steel cable is kept in a tight state for a long time, so that the displacement and the rotation of the prefabricated platform are limited;
the steel pipe pile foundation is of a cylindrical structure, and a layer of thick steel plate is sealed at the top of the steel pipe pile foundation; lifting lugs are welded on the steel pipe pile foundation, and shackles connected with the lifting lugs are arranged at the bottom ends of the steel cables; the lifting lug is arranged at a position 0.5m below the top of the steel pipe pile foundation pile; the fairlead is disposed about the opening of the prefabricated platform.
2. Mooring system for use in port water surface prefabrication platforms according to claim 1, characterized in that: the cable stranding equipment adopts a manual winch.
3. Mooring system for use in port water surface prefabrication platforms according to claim 1, characterized in that: the steel cable is a steel wire cable for a ship, a composite material cable or a polymer material cable.
4. A construction method of a mooring system applied to a port water surface prefabricated platform is characterized by comprising the following steps: the method comprises the following steps:
1) after the steel pipe pile foundation is manufactured on land, launching into place by using a hoisting machine, and hammering the steel pipe pile foundation to a specified elevation by using a hydraulic pile hammer;
2) after the steel cable, the cable guider and the cable stranding equipment are manufactured, the steel cable, the cable guider and the cable stranding equipment are directly arranged on the prefabricated platform;
3) after the prefabricated platform reaches a designated position, a diver connects the end shackle of the steel cable with a lifting lug of the steel pipe pile foundation, and then the steel cable is gradually tightened by stranding equipment, so that the prefabricated platform is gradually positioned;
4) when the tidal level of the port changes, the length of the steel cable is adjusted through the stranding equipment, so that the steel cable can be in a tight state for a long time, and the stability of the prefabricated platform is ensured;
5) according to the demand of the ocean structure built on the prefabricated platform, if the prefabricated platform needs to sink to the bottom, the prefabricated platform can submerge in the low tide level of a port and in the calmer window period of stormy waves, the prefabricated platform can be stably located on a steel pipe pile foundation pile group due to the fact that the steel pipe pile foundation is far away from the edge of the vertical projection surface of the prefabricated platform, and reinforcing steel plates are arranged in the contact area of the prefabricated platform and the steel pipe pile foundation and on the periphery of the prefabricated platform;
6) after the prefabricated platform is submerged and located on the steel pipe pile foundation pile group, the large-scale special floating ship can enter the field to transport corresponding marine structures, and the floating ship cannot interfere with the prefabricated platform or the steel pipe pile foundation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110077431.8A CN112900405A (en) | 2021-01-20 | 2021-01-20 | Mooring system applied to port water surface prefabricated platform and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110077431.8A CN112900405A (en) | 2021-01-20 | 2021-01-20 | Mooring system applied to port water surface prefabricated platform and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112900405A true CN112900405A (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110077431.8A Pending CN112900405A (en) | 2021-01-20 | 2021-01-20 | Mooring system applied to port water surface prefabricated platform and construction method |
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| CN (1) | CN112900405A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1764781A (en) * | 2003-03-25 | 2006-04-26 | 船舶通用涡轮有限公司 | Submerged water current turbines installed on a deck |
| CN101687533A (en) * | 2007-05-16 | 2010-03-31 | Agr深水发展系统股份有限公司 | Pull in - pay out mooring system and method of using the same |
| CN103600818A (en) * | 2013-11-08 | 2014-02-26 | 江苏科技大学 | Semi-submersible platform with floating body direction adjustable and adjusting method |
| CN104125914A (en) * | 2011-12-14 | 2014-10-29 | 法国Nov-Blm公司 | Fairlead for guiding an anchoring chain and intended to be provided to anchoring equipment on the floor of a floating platform |
| CN110155262A (en) * | 2019-06-04 | 2019-08-23 | 中国海洋石油集团有限公司 | A kind of dry tree semisubmersible platform with self installation function |
-
2021
- 2021-01-20 CN CN202110077431.8A patent/CN112900405A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1764781A (en) * | 2003-03-25 | 2006-04-26 | 船舶通用涡轮有限公司 | Submerged water current turbines installed on a deck |
| CN101687533A (en) * | 2007-05-16 | 2010-03-31 | Agr深水发展系统股份有限公司 | Pull in - pay out mooring system and method of using the same |
| CN104125914A (en) * | 2011-12-14 | 2014-10-29 | 法国Nov-Blm公司 | Fairlead for guiding an anchoring chain and intended to be provided to anchoring equipment on the floor of a floating platform |
| CN103600818A (en) * | 2013-11-08 | 2014-02-26 | 江苏科技大学 | Semi-submersible platform with floating body direction adjustable and adjusting method |
| CN110155262A (en) * | 2019-06-04 | 2019-08-23 | 中国海洋石油集团有限公司 | A kind of dry tree semisubmersible platform with self installation function |
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Application publication date: 20210604 |
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| RJ01 | Rejection of invention patent application after publication |