CN109720507B - Rigid-elastic mooring deep sea platform structure - Google Patents
Rigid-elastic mooring deep sea platform structure Download PDFInfo
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- CN109720507B CN109720507B CN201910001561.6A CN201910001561A CN109720507B CN 109720507 B CN109720507 B CN 109720507B CN 201910001561 A CN201910001561 A CN 201910001561A CN 109720507 B CN109720507 B CN 109720507B
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Abstract
The invention discloses a rigid-elastic mooring deep sea platform structure which comprises a working platform, a buoyancy tank, a supporting mechanism and a linear mooring mechanism, wherein the supporting mechanism is supported between the working platform and the buoyancy tank; the mooring system adopts a tension type rigid mooring system of a pure anchor chain, and a magnet-spring system connecting device is arranged above the anchor chain, so that the function of converting rigid mooring into elastic mooring under the action of rare super storms is realized; the supporting column is in a solid round rod form, and a square steel pipe placed at an angle of 45 degrees is used as a tie beam; the cabling takes the form of an oblique crossing inside the platform contour. The invention effectively solves the problem that the existing ocean platform is in small-amplitude shaking for a long time, reduces the vertical and horizontal action of sea waves and ocean currents, solves the problem of space occupation caused by the extension of the traditional mooring cable to the outside of the platform outline, and ensures that the platform can be kept stable in the conventional ocean environment.
Description
Technical Field
The invention relates to a rigid and elastic mooring deep sea platform structure, which belongs to the field of ocean engineering.
Background
The vast sea reserves very abundant resources. As a strategic resource base, the development and utilization of oceans is a necessary choice for implementing a strategy of sustainable development in our country. The development of the deep sea platform technology enables the construction of the deep sea surface micro-city to enter the visual field of people, and the deep sea surface micro-city is used as a place for long-term life, residence, work and production of people and has higher requirements on stability.
The existing various deep sea platform structures mostly adopt a flexible mooring system to adapt to the action of huge wind and wave currents, and as a result, the platform is allowed to be in a small-amplitude shaking state for a long time, and the state obviously cannot meet the functional requirements of the deep sea micro city.
At present, a catenary type steel cable mooring system is mainly adopted in the most common flexible mooring system, however, for a deepwater operation platform, the catenary type steel cable mooring system is not suitable any more, and as the water depth is more than 1500m, the length and the self weight of an anchor chain are rapidly increased, so that the effective load capacity of the platform is reduced, and the positioning capacity of the mooring system is reduced; meanwhile, due to the lying section on the seabed, the mooring radius is too large, and the area occupied by the seabed foundation is increased.
For ultra-deep water floating platform equipment with water depth more than 1500m, the tensioning mooring system is light in weight, high in strength and low in cost because the anchor chain of the tensioning mooring system is made of novel materials such as polyester fiber cables. However, the physical properties of the material of the tension mooring system have strong nonlinearity, and the rigidity of the material of the tension mooring system before and after the installation of the mooring cable is continuously changed along with the pretension, the displacement and the time, and the nonlinear factor brings great problems to the motion response forecast of the platform and the estimation of the maximum tension of the mooring cable.
In the existing supporting system, a series of measures are taken for reducing the action of sea waves and ocean currents, for example, a heave plate is arranged, and a spiral flow deflector is arranged on a supporting column, but the effect mainly lies in reducing the vertical action of the sea waves, and the effect is not very obvious; on the other hand, because the support column is mostly composed of a plurality of thicker hollow columns, the lateral water receiving area is larger, and the horizontal action on sea waves and ocean currents cannot be obviously reduced.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides a rigid and elastic mooring deep sea platform structure, which solves the problem that the conventional deep sea platform is easy to shake in a small range, reduces the horizontal action of sea waves and ocean currents, and solves the problem of space occupation caused by extension of a traditional mooring cable beyond the outline of the platform.
The technical scheme is as follows: in order to achieve the purpose, the invention adopts the technical scheme that:
a rigid-elastic mooring deep sea platform structure comprises a working platform, a buoyancy tank, a supporting mechanism and a linear mooring mechanism; the supporting mechanism is supported between the working platform and the buoyancy tank, the buoyancy tank is arranged in seawater, and the working platform is suspended above the sea level;
the working platform comprises a platform deck and mooring columns fixed on the platform deck, and the mooring columns preferably adopt solid cylindrical structures;
the supporting mechanism comprises a supporting upright post, a tie beam and a square steel pipe joint; under the condition that the seawater is completely static, the support upright posts are vertical, the upper ends of the support upright posts are fixed with the platform deck, and the lower ends of the support upright posts are fixed with the buoyancy tank; the square steel pipe nodes are sleeved on the outer sides of the supporting upright posts and fixed with the supporting upright posts, and under the condition that the seawater is completely static, the four side surfaces of the square steel pipe nodes are respectively opposite to the horizontal transverse direction and the horizontal longitudinal direction; under the condition that the seawater is completely static, the tie beams are arranged along the horizontal transverse direction and the horizontal longitudinal direction, and two ends of each tie beam are respectively fixed with corresponding side surfaces of two adjacent square steel pipe joints on the same straight line; the square steel pipe nodes are used as connecting nodes of the supporting upright columns and the tie beams, and the arrangement number of the square steel pipe nodes in the vertical direction is calculated and designed according to factors such as buoyancy of the whole device;
the linear mooring mechanism comprises an anchor chain and a magnet-spring unit, wherein the anchor chain is divided into an anchor chain I section and an anchor chain II section; the magnet-spring unit comprises a group of guide rods, a group of springs, a pair of magnets, a pair of adsorption discs (steel discs) and a pair of flange plates; the adsorption discs are uniformly provided with guide holes with the same number as the guide rods along the circumferential direction, one end of each guide rod is fixed with one flange, and the other end of each guide rod sequentially penetrates through the corresponding guide hole of one adsorption disc, the corresponding spring and the corresponding guide hole of the other adsorption disc and then is fixed with the other flange; the two magnets are respectively arranged in the middle of the right opposite surfaces of the two adsorption discs; in a natural state, the two magnets attract each other, and a group of springs are arranged between the two adsorption discs in a micro-compression state, a natural state or a micro-stretching state; the middle parts of the two flange plates are provided with through holes, and the middle part of one side of the adsorption plate, which is opposite to the through holes, is provided with a linking ring;
the anchor chain is connected between the working platform and the buoyancy tank in an internal oblique crossing mode, the underwater part of the anchor chain is connected with floaters at intervals, and the size and the distance of the floaters are determined according to the dead weight and the buoyancy of the anchor chain; one end of the anchor chain I section is connected with one linking ring on the magnet-spring unit, the other end of the anchor chain I section passes through the through hole on the corresponding flange plate and then is connected with the mooring post, one end of the anchor chain II section is connected with the other linking ring on the magnet-spring unit, and the other end of the anchor chain II section passes through the through hole on the corresponding flange plate and then is fixed with the seabed; and an anchor chain pore passage is arranged at the solid position where the anchor chain passes through (mainly, the anchor chain pore passage is arranged at the corresponding position of the working platform and the buoyancy tank).
Preferably, the support column is of a solid cylindrical structure.
Preferably, the drawknot cross beam is of a square steel tube structure, and under the condition that the seawater is completely static, four side surfaces of the drawknot cross beam form 45-degree included angles with the horizontal plane.
Preferably, the surface of the anchor chain pore passage capable of contacting with the anchor chain is provided with a buffer layer.
Preferably, the square steel pipe joints are fixed with the support columns and the tie beams in a welding mode.
Preferably, the magnet-spring unit is disposed above the work platform.
Preferably, the anchor chain is an anti-abrasion anchor chain, and the magnet is a large-attraction permanent magnet.
Has the advantages that: according to the rigid-elastic mooring deep sea platform structure provided by the invention, the support system can reduce the vertical and horizontal effects of sea waves and ocean currents; the mooring system can realize a rigid mooring state under the action of long-term conventional wind and wave currents, so that the platform is in a nearly stable state, and the small-amplitude shaking of the platform is reduced; the mooring rope is converted into an elastic mooring state under the action of rare super wind and wave flows, so that the problem of breaking of the mooring rope caused by excessive mooring force is solved; automatically pulling back to a rigid mooring state after the super action is dissipated, thereby ensuring that the platform is in an approximately stable state again; the magnet-spring system is arranged above the platform floor, so that the system is free from corrosion and convenient to replace; the cable arrangement mode solves the problem of space occupation caused by extension of the traditional mooring cable beyond the outline of the platform.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the support mechanism;
FIG. 3 is a schematic diagram of a magnet-spring unit;
fig. 4 is a schematic view of the installation of the float.
The figure includes: 1. a working platform; 2. a support mechanism; 3. a buoyancy tank; 4. a linear mooring mechanism; 5. a seabed; 6. sea level; 1-1, a platform deck; 1-2, mooring columns; 1-3, an anchor chain pore passage I; 2-1, supporting the upright post; 2-2, tying a beam; 2-3, connecting square steel pipes; 3-1, an anchor chain pore passage II; 4-1 magnet-spring unit; 4-1-1, a magnet; 4-1-2, an adsorption disc; 4-1-3, a guide rod; 4-1-4, a flange plate; 4-1-5, a spring; 4-2, a floater; 4-3, and a sling.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the structure of a rigid-elastic mooring deep sea platform comprises a working platform 1, a buoyancy tank 3, a supporting mechanism 2 and a linear mooring mechanism 4; the supporting mechanism 2 is supported between the working platform 1 and the buoyancy tank 3, the buoyancy tank 3 is arranged in sea water, and the working platform 1 is suspended above the sea level 6.
The working platform 1 comprises a platform deck 1-1 and mooring columns 1-2 fixed on the platform deck 1-1, and the mooring columns 1-2 are of solid cylindrical structures.
The buoyancy tank 3 is composed of an integral cuboid to weaken the influence of the up-and-down shaking of seawater on the shaking of the working platform 1, an anchor chain duct I1-3 is reserved at the position where an anchor chain passes through, and a buffer layer is arranged on the inner wall of the anchor chain duct I1-3 to prevent the anchor chain from damaging the buoyancy tank 3; supporting upright columns 2-1 are arranged above the buoyancy tank 3 to be connected with the working platform 1, and horizontal support is carried out between the supporting upright columns 2-1 through tie beams 2-2; a mooring post 1-2 is arranged above the working platform 1 to fix the top end of the anchor chain.
The supporting mechanism 2 comprises a supporting upright post 2-1, a tie beam 2-2 and a square steel pipe node 2-3; under the condition that the seawater is completely static, the supporting upright post 2-1 is vertical, the upper end of the supporting upright post is fixed with the platform deck 1-1, and the lower end of the supporting upright post is fixed with the buoyancy tank 3; the square steel pipe node 2-3 is sleeved on the outer side of the support upright post 2-1 and fixed with the support upright post 2-1, and under the condition that the seawater is completely static, four side surfaces of the square steel pipe node 2-3 are respectively opposite to the horizontal transverse direction and the horizontal longitudinal direction; under the condition that the seawater is completely static, the drawknot beam 2-2 is arranged along the horizontal transverse direction and the horizontal longitudinal direction, and two ends of the drawknot beam 2-2 are respectively fixed with corresponding side surfaces of two adjacent square steel pipe nodes 2-3 on the same straight line; the supporting upright post 2-1 adopts a solid cylindrical structure; the drawknot beam 2-2 adopts a square steel tube structure, and under the condition that the seawater is completely static, four side surfaces of the drawknot beam 2-2 form 45-degree included angles with the horizontal plane; the square steel tube joint 2-3 is fixed with the supporting upright post 2-1 and the tie beam 2-2 in a welding mode, the square steel tube joint 2-3 is welded on the supporting upright post 2-1, after the welding strength of the square steel tube joint 2-3 and the supporting upright post 2-1 is ensured, the tie beam 2-2 is welded on the square steel tube joint 2-3 in an inclined mode at an angle of 45 degrees to form connection.
The arrangement of the support means 2 is similar to that of the frames in the building structure, providing a good resistance to horizontal action, which is beneficial to improving the overall stability of the superstructure. The supporting upright post 2-1 is in a solid round rod form, and compared with a rectangular column, the round supporting upright post 2-1 has smaller effect of sea waves and ocean currents, so that the horizontal shaking of the working platform 1 can be reduced; the solid supporting upright post 2-1 can obtain higher bearing capacity, so that the number of the supporting upright posts 2-1 is reduced, and the contact area between sea waves and the supporting upright post 2-1 is reduced. The tie beam 2-2 is in the form of a square steel pipe and is connected with the support upright post 2-1 into a whole, wherein the tie beam 2-2 is placed by inclining 45 degrees, which is beneficial to reducing the horizontal action of sea waves and sea wind.
The linear mooring mechanism 4 comprises an anchor chain and a magnet-spring unit 4-1, wherein the anchor chain is divided into an anchor chain I section and an anchor chain II section; the magnet-spring unit 4-1 comprises a group of guide rods 4-1-3, a group of springs 4-1-5, a pair of magnets 4-1-1, a pair of adsorption discs 4-1-2 and a pair of flange discs 4-1-4; the adsorption disc 4-1-2 is uniformly provided with guide holes with the number consistent with that of the guide rods 4-1-3 along the circumferential direction, one end of each guide rod 4-1-3 is fixed with one flange 4-1-4, and the other end of each guide rod 4-1-3 sequentially penetrates through the corresponding guide hole of one adsorption disc 4-1-2, the spring 4-1-5 and the corresponding guide hole of the other adsorption disc 4-1-2 and then is fixed with the other flange 4-1-4; the two magnets 4-1-1 are respectively arranged in the middle parts of the two adsorption discs 4-1-2 which are opposite to each other; in a natural state, the two magnets 4-1-1 are attracted, and a group of springs are arranged between the two adsorption discs 4-1-2 in a micro-compression state, a natural state or a micro-stretching state; the middle parts of the two flange plates 4-1-4 are provided with through holes, and the middle part of one side of the adsorption plate 4-1-2 opposite to the through holes is provided with a linking ring.
Under the action of daily sea wind, sea waves and ocean currents, the two magnets 4-1-1 are always kept in a mutual adsorption state. When encountering rare super stormy waves, the pulling force of the anchor chain exceeds the adsorption force between the two magnets 4-1-1, the magnets 4-1-1 are separated from each other, the pulling force of the anchor chain is born by the springs 4-1-5 and is elongated, the linear mooring mechanism 4 is converted from a rigid mooring state to an elastic mooring state, and the whole platform system shakes for a short time in the process; after the action of wind and waves, the magnets 4-1-5 are attracted together again, and the linear mooring mechanism 4 returns to the rigid mooring state.
The magnet-spring unit 4-1 is arranged above the working platform 1 so as to be convenient to maintain and replace; and a cable arrangement mode of obliquely crossing the inside of the platform outline is adopted, so that most of the anchor chain is positioned in the horizontal projection range of the working platform 1, and the submarine space occupied by the mooring cable is effectively reduced.
The anchor chain is connected between the working platform 1 and the buoyancy tank 3 in an internal oblique crossing manner, the underwater part of the anchor chain is connected with floaters 4-2 at intervals, and the size and the distance of the floaters 4-2 are determined by calculation according to the dead weight and the buoyancy of the anchor chain; one end of the anchor chain I section is connected with one linking ring on the magnet-spring unit 4-1, the other end of the anchor chain I section passes through a through hole on the corresponding flange plate 4-1-4 and then is connected with the mooring post 1-2, one end of the anchor chain II section is connected with the other linking ring on the magnet-spring unit 4-1, and the other end of the anchor chain II section passes through a through hole on the corresponding flange plate 4-1-4 and then is fixed with the seabed 5; and an anchor chain pore passage is arranged at the position of the entity through which the anchor chain passes, and a buffer layer is arranged on the surface of the anchor chain pore passage, which can be in contact with the anchor chain.
As shown in figure 4, which is a schematic structural diagram of the float sling, the weight of the anchor chain is balanced by the float 4-2 at the part of the anchor chain under water, so that the anchor chain is in a straight line shape, and the float 4-2 is connected with the anchor chain through a 4-3 sling.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (5)
1. The utility model provides a deep sea platform structure of rigid-elastic mooring which characterized in that: comprises a working platform (1), a buoyancy tank (3), a supporting mechanism (2) and a linear mooring mechanism (4); the supporting mechanism (2) is supported between the working platform (1) and the buoyancy tank (3), the buoyancy tank (3) is arranged in seawater, and the working platform (1) is suspended above the sea level (6);
the working platform (1) comprises a platform deck (1-1) and mooring columns (1-2) fixed on the platform deck (1-1);
the supporting mechanism (2) comprises a supporting upright post (2-1), a tie beam (2-2) and a square steel pipe node (2-3); under the condition that the seawater is completely static, the supporting upright post (2-1) is vertical, the upper end of the supporting upright post is fixed with the platform deck (1-1), and the lower end of the supporting upright post is fixed with the buoyancy tank (3); the square steel pipe joint (2-3) is sleeved on the outer side of the support upright post (2-1) and fixed with the support upright post (2-1), and under the condition that the seawater is completely static, four side surfaces of the square steel pipe joint (2-3) are respectively opposite to the horizontal transverse direction and the horizontal longitudinal direction; under the condition that the seawater is completely static, the tie beams (2-2) are arranged horizontally and longitudinally, and two ends of each tie beam (2-2) are respectively fixed with corresponding side surfaces of two adjacent square steel pipe joints (2-3) on the same straight line; the drawknot beam (2-2) adopts a square steel tube structure, and under the condition that the seawater is completely static, four side surfaces of the drawknot beam (2-2) form 45-degree included angles with the horizontal plane;
the linear mooring mechanism (4) comprises an anchor chain and a magnet-spring unit (4-1), wherein the anchor chain is divided into an anchor chain I section and an anchor chain II section; the magnet-spring unit (4-1) comprises a group of guide rods (4-1-3), a group of springs (4-1-5), a pair of magnets (4-1-1), a pair of adsorption discs (4-1-2) and a pair of flange discs (4-1-4); the adsorption discs (4-1-2) are uniformly provided with guide holes with the number consistent with that of the guide rods (4-1-3) along the circumferential direction, one end of each guide rod (4-1-3) is fixed with one flange plate (4-1-4), and the other end of each guide rod (4-1-3) sequentially penetrates through the corresponding guide hole of one adsorption disc (4-1-2), the spring (4-1-5) and the corresponding guide hole of the other adsorption disc (4-1-2) and then is fixed with the other flange plate (4-1-4); the two magnets (4-1-1) are respectively arranged in the middle parts of the two opposite surfaces of the two adsorption discs (4-1-2); in a natural state, the two magnets (4-1-1) are attracted, and a group of springs are arranged between the two adsorption discs (4-1-2) in a micro-compression state, a natural state or a micro-stretching state; a through hole is arranged in the middle of the two flange plates (4-1-4), and a linking ring is arranged in the middle of one side of the adsorption plate (4-1-2) opposite to the through hole;
the anchor chain is connected between the working platform (1) and the buoyancy tank (3) in an internal oblique crossing manner, the underwater part of the anchor chain is connected with floaters (4-2) at intervals, and the size and the distance of the floaters (4-2) are determined by calculation according to the dead weight and the buoyancy of the anchor chain; one end of the anchor chain I section is connected with one linking ring on the magnet-spring unit (4-1), the other end of the anchor chain I section passes through the through hole on the corresponding flange plate (4-1-4) and then is connected with the mooring post (1-2), one end of the anchor chain II section is connected with the other linking ring on the magnet-spring unit (4-1), and the other end of the anchor chain II section passes through the through hole on the corresponding flange plate (4-1-4) and then is fixed with the seabed (5); and an anchor chain pore passage is arranged at the solid position where the anchor chain passes through.
2. The rigid-elastic mooring deep sea platform structure according to claim 1, characterized in that: the supporting upright post (2-1) adopts a solid cylindrical structure.
3. The rigid-elastic mooring deep sea platform structure according to claim 1, characterized in that: the surface of the anchor chain pore passage capable of being in contact with the anchor chain is provided with a buffer layer.
4. The rigid-elastic mooring deep sea platform structure according to claim 1, characterized in that: the square steel tube joint (2-3) is fixed with the support upright post (2-1) and the tie beam (2-2) in a welding mode.
5. The rigid-elastic mooring deep sea platform structure according to claim 1, characterized in that: the magnet-spring unit (4-1) is arranged above the working platform (1).
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| CN201910001561.6A CN109720507B (en) | 2019-01-02 | 2019-01-02 | Rigid-elastic mooring deep sea platform structure |
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| CN201910001561.6A CN109720507B (en) | 2019-01-02 | 2019-01-02 | Rigid-elastic mooring deep sea platform structure |
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| CN109720507B true CN109720507B (en) | 2020-04-14 |
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Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2054946A1 (en) * | 1969-11-20 | 1971-05-27 | Corso, Giorgio, Messina (Italien) | Hydrostatic frame with platform |
| SU1268467A1 (en) * | 1984-10-17 | 1986-11-07 | Предприятие П/Я А-1345 | Arrangement for heaving anchor chain |
| JP2573660B2 (en) * | 1988-07-07 | 1997-01-22 | 株式会社 ジャパンテクノロジ | How to fix floating structures |
| JP2000185690A (en) * | 1998-10-13 | 2000-07-04 | Japan Technology:Kk | Private-power-generation-type floating body structure |
| US20070204785A1 (en) * | 2006-03-01 | 2007-09-06 | Chow Andrew W | Ballast extension-submersion truss stable platform |
| AU2008290598B2 (en) * | 2007-08-17 | 2013-08-29 | Single Buoy Moorings Inc. | Tension leg connection system |
| CN201792989U (en) * | 2010-07-16 | 2011-04-13 | 黄云鹏 | Extension limiting device for elastic sea anchor cable groups |
| KR20140120150A (en) * | 2013-04-02 | 2014-10-13 | 에스티엑스조선해양 주식회사 | mooring device and method using magnetic force |
| CN104029799A (en) * | 2014-05-29 | 2014-09-10 | 中国船舶重工集团公司第七○二研究所 | Box-type lower floating body multi-stand-column-type semi-submersible platform |
| CN105644705A (en) * | 2015-12-18 | 2016-06-08 | 湖北海洋工程装备研究院有限公司 | Small water plane twin-hull platform |
| CN106677971B (en) * | 2017-01-18 | 2018-09-07 | 江苏科技大学 | A kind of multi-functional mooring line |
| CN106985973B (en) * | 2017-03-10 | 2019-04-26 | 浙江省工程勘察院 | A kind of sea area probing sand anchor cast anchor and the method that weighs anchor |
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