CN112278173A - Offshore floating island, offshore floating island group and offshore floating island construction method - Google Patents
Offshore floating island, offshore floating island group and offshore floating island construction method Download PDFInfo
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- CN112278173A CN112278173A CN201910675345.XA CN201910675345A CN112278173A CN 112278173 A CN112278173 A CN 112278173A CN 201910675345 A CN201910675345 A CN 201910675345A CN 112278173 A CN112278173 A CN 112278173A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/20—Adaptations of chains, ropes, hawsers, or the like, or of parts thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
Abstract
The invention discloses an offshore floating island, which comprises a plurality of floating platform modules, wherein each floating platform module is provided with: a main floating body frame formed by a closed annular columnar floating body; an offshore operation platform used for bearing various offshore operation buildings is arranged above the main floating body frame; the lower frame body is formed by an annular floating body below the main floating body frame, the offshore operation platform and the main floating body frame are connected through a longitudinally extending hollow connecting structure, and the hollow connecting structure is formed by a floating body in a hollow structure; the displacement of the main floating frame is larger than the total structural weight of the floating platform module; a cable or anchor chain connecting two adjacent floating platform modules; a passage channel arranged between each floating platform module for the circulation of personnel and goods; a mooring system for securing each floating platform module to a destination sea area. The offshore floating island has low construction difficulty and cost, higher storm resistance and self-adjusting capability of adapting to sea conditions.
Description
Technical Field
The invention relates to the technical field of offshore buildings, in particular to an offshore floating island, an offshore floating island group and a construction method of the offshore floating island.
Background
With the increase of population and the high-speed exploitation of land resources, the ocean economic development era is gradually entered nowadays, and the exploration and various economic developments of the ocean become important research directions for human beings. At present, artificial islands constructed on the sea are mainly divided into three types. The first type is a fixed platform island, and the operation platform needs to be fixedly connected with the seabed through a mechanism. The construction of the island is large in damage to the environment, the sea area applicability of the island is poor, the construction difficulty is large, the cost is high, the investment recovery rate is low, and the batch-scale construction is difficult to form. The second type is artificial hydraulic filling island construction based on an island reef, and although the island has long service life, complex offshore construction is required, so that the environmental damage is large, the investment is large, and the construction time is long. The third type is formed by an ultra-large integrated floating platform or a plurality of small floating platforms are directly butted through a connecting mechanism to form an integrated floating island, the island connecting structure is complex, the bottleneck of fatigue strength and rigidity is difficult to break through, the construction technology difficulty is high, the construction cost is high, the integrated floating platform of the type has a single structural mode, cannot be adjusted according to various ocean development requirements, does not have large reserve buoyancy and self-adjusting capacity according to sea conditions, and the capacity of resisting storms needs to be improved.
Therefore, there is a need to develop new artificial islands to reduce the difficulty of construction, the construction cost, and increase the diversity of island structural patterns and the ability to resist wind storm.
Disclosure of Invention
The invention aims to provide an offshore floating island which has a simple connecting structure, is detachable and convenient to connect, can be used for connecting and adjusting a plurality of floating platform modules in various structures, and has higher storm resistance and self-adjusting capacity suitable for sea conditions. The present invention also aims to provide an offshore floating island group formed of the above offshore floating islands and a method for constructing the above offshore floating islands.
The invention provides an offshore floating island, which comprises:
a plurality of floating platform modules that can float on the surface of water, each floating platform module all is provided with: the main floating body frame comprises a columnar floating body which extends along the annular direction and is connected end to form a closed annular shape; the offshore operation platform is arranged above the main floating body frame and is provided with an offshore operation platform layer, the offshore operation platform layer is used for bearing various offshore operation tools and buildings, the offshore operation platform is connected with the main floating body frame through a longitudinally extending hollow-out connecting structure, and the hollow-out connecting structure is formed by a floating body in a hollow structure; the lower frame body is arranged below the main floating body frame, the lower frame body is provided with an annular floating body in a closed annular structure, and the lower frame body is connected with the main floating body frame through the hollow connecting structure; the displacement of the main floating frame is larger than the total structural weight of the floating platform module;
a cable or anchor chain connecting adjacent two of said floating platform modules;
a passage way arranged between each of the floating platform modules for the circulation of personnel and cargo;
a mooring system for securing each of said floating platform modules to a destination sea area.
Preferably, the offshore operation platforms and the lower frame bodies are arranged in a plurality and arranged along the depth direction of seawater, and two adjacent offshore operation platforms and two adjacent lower frame bodies are connected through the hollow connection structures.
Preferably, the hollow connecting structure comprises a plurality of connecting columns which vertically extend and are distributed along the annular circumference of the main floating body frame, the radial dimension of each connecting column is a structure with a large middle and small two ends along the axial direction,
preferably, supporting platforms laid in the annular space are arranged in the annular space of the annular structure of the lower frame body and the annular space of the main floating body frame, and the supporting platforms are hollow structures; the columnar floating body is of a hollow structure, and a cabin structure used for containing objects is arranged in the inner space of the columnar floating body.
Preferably, the passage channel is arranged in one way or any combination of ways in a trestle or a floating bridge or a cableway formed by a shuttle boat or a cable
Preferably, the offshore floating island comprises a peripheral positioning module combination in a closed annular structure and a central combination module positioned in the annular space of the annular structure; the peripheral positioning module is combined with a plurality of floating platform modules which are sequentially connected through cables or anchor chains, and the central combined module comprises at least one floating platform module; the central combined module is connected with the peripheral positioning module through a cable or an anchor chain; the mooring system is connected with the peripheral positioning module combination.
Preferably, the central module is provided with a plurality of said floating platform modules and each of said floating platform modules is connected by a cable or chain.
The invention also provides an offshore floating island group, which comprises at least two floating islands, wherein the floating islands are the offshore floating islands; and a passage and operation channel is arranged between each offshore floating island.
Preferably, the passage and operation channel adopts any one mode or any combination of multiple modes of a trestle, a floating bridge, a shuttle boat or a cableway.
The invention also provides a construction method of the offshore floating island, which comprises the following steps: constructing the floating platform module; connecting a plurality of floating platform modules through cables or anchor chains to form the peripheral positioning module combination in a closed annular structure, and fixing the peripheral positioning module combination in a destination sea area through a mooring system; positioning at least one of said floating platform modules within an annulus of said annular structure to form said center module assembly, said center module assembly being connected to said peripheral positioning modules by cables or hawsers; the passage channel is constructed by one or any combination of a plurality of ways in a cableway formed by a trestle or a floating bridge or a shuttle boat or a cable.
In the technical scheme provided by the invention, the offshore floating island comprises a plurality of floating platform modules which are provided with offshore operation platforms and can float on the water surface and a mooring system used for fixing each floating platform module in a destination sea area, wherein the offshore operation platforms are used for receiving various offshore operation tools and buildings so that the island can carry out various offshore operation activities. Wherein the individual modules are connected by cables or chains and wherein the circulation of personnel or cargo between the individual modules is performed by means of passage channels such as bridges or vessels. Therefore, the offshore floating island breaks through the conventional structure and uses a new connecting structure, and the floating platform modules can be stably connected to form an integral floating island and a large-area island space in the same sea area, and are independent from each other. Compared with the integrally connected floating platforms with the same offshore operation platform area, the offshore floating island has the advantages that the platforms are dispersedly arranged, so that the operation of separating an integrated space as different functional areas is omitted, and the operation of each floating platform module as different functional areas can be adjusted according to respective functional requirements and actual operation conditions; gaps among the floating platform modules can be used for sea waves to directly penetrate, impact of the sea waves on the whole island is reduced, and the stability, the wind and wave resistance and the self-adjusting capacity of adapting to severe sea conditions of the whole floating island are greatly improved. Compared with the complex connecting structure which is integrally connected through various fasteners and connecting pieces in the prior art, the connecting structure which is connected through the mooring rope or the anchor chain has the advantages of simple structure and remarkable and convenient construction and production, and remarkably reduces the design difficulties of structural connectivity design, fatigue strength, rigidity of the connecting structure and the like; and the connecting structure can be detached and repeatedly connected, and each floating platform module can be combined and connected in various structural modes according to different sea areas and different functional requirements. The passage channels among the floating platform modules can be cableways, trestles, floating bridges or even ships, and from the aspect of the connecting structure and the passage channels, the construction difficulty of the offshore floating island is obviously reduced, and the used cost is also obviously reduced.
Each floating platform module comprises a main floating body frame for draining water and bearing main buoyancy, an offshore operation platform arranged above the main floating body frame in parallel and a lower frame arranged above the main floating body frame in parallel. The main floating body frame is formed by connecting columnar floating bodies which are parallel to the sea surface and extend along the ring shape end to end, the offshore operation platform is used for offshore operation, and the lower frame body is positioned below the horizontal plane, bears secondary buoyancy and can provide stabilizing force for the whole module and prevent the module from shaking left and right or sinking. The main floating body frame and the lower frame body are both of a closed annular structure, and the main floating body frame and the operation platform and the main floating body frame and the lower frame body are connected through the hollow-out connecting structure to form an integral frame. The whole frame is simple and firm in structure, has high strength and impact resistance, is hollow in the center, and has an outer annular structure, namely a main floating body frame of a large water line surface, so that the main floating body frame bears the main weight and provides stability, and still has extremely high stability and anti-sinking capability when storms and loads are changed sharply; and the whole frame is in a hollow structure, when the wave impacts the frame, most of the wave directly passes through or crosses the floating platform module from the gap, so that the wave load borne by the module is effectively reduced, and the shaking generated by the module under the impact of the wave is obviously reduced. The displacement of the main floating body frame is larger than the total structural weight of the floating platform module, namely the water line surface is positioned at the position of the main floating body frame, and the hollow connecting column is formed by the floating body in a hollow structure, so that the floating platform module provided by the invention has larger reserve buoyancy and larger water line surface. The large water line surface can improve the stability and the safety of the whole module under the normal sea condition; the floating type island has large reserve buoyancy, can quickly enable the floating type platform module to enable the draft position to be located on the hollow-out type connecting structure in a ballasting mode under the storm sea condition, obviously reduces the waterplane surface on the premise of ensuring stability, enables the whole floating type platform module to enter a semi-submerged state, enables the impact of storm on the basic module to be reduced, improves the storm resistance, ensures the safety of the floating type platform module, and ensures the safety of the whole offshore floating type island.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of an offshore floating island in an embodiment of the invention;
fig. 2 is a schematic structural view of a floating platform module according to an embodiment of the present invention;
FIG. 3 is a schematic view of a traffic lane in an embodiment of the present invention;
fig. 4 is a schematic diagram of an offshore floating island population in an embodiment of the invention.
In fig. 1-4:
the floating type offshore floating platform comprises a floating platform module-1, a mooring rope-2, a mooring system-3, a passage-4, a main floating body frame-11, an offshore operation platform-12, a lower frame body-13 and a hollow connecting structure-14.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The purpose of this specific embodiment is to provide an offshore floating island, which has a simple connection structure, is detachable and simple to connect, can perform connection adjustment of multiple structures on multiple floating platform modules, and has higher storm resistance and self-adjustment capability suitable for sea conditions. It is also an object of this embodiment to provide a group of offshore floating islands formed from the above-described offshore floating islands.
Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the contents of the invention recited in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.
Referring to fig. 1-2, the embodiment provides an offshore floating island, which includes a plurality of floating platform modules 1 each having an offshore platform 12 and capable of floating on the water surface, and a mooring system 3 for fixing each floating platform module 1 to a destination sea area, wherein the offshore platform 12 is used for receiving various offshore tools and structures so that the island can perform various offshore operations. Wherein the individual modules 1 are connected by means of cables 2 or anchor lines and wherein the circulation of personnel or cargo between the individual modules 1 is performed by means of a passage channel 4, such as a bridge or a vessel. Therefore, the offshore floating island in the embodiment breaks through the conventional and novel connecting structure, and can not only stably connect the platform modules to form an integral floating island and have a large-area island space in the same sea area, but also enable the floating platform modules 1 to be independent from each other and used as different functional areas or independent small islands. Compared with the integrally connected floating platforms with the same area as the offshore operation platform 12, the offshore floating island has the advantages that the platforms are distributed, so that the operation of separating an integrated space as different functional areas is omitted, the operation of each floating platform module 1 as the different functional areas can be adjusted according to respective functional requirements and actual operation conditions, and particularly, the self draught condition can be adjusted in a ballasting mode to improve the capability of adapting to various operation conditions; gaps among the floating platform modules 1 can be used for sea waves to directly penetrate, impact of the sea waves on the whole island is reduced, and the stability, the wind and wave resistance and the self-adjusting capacity of adapting to severe sea conditions of the whole floating island are greatly improved. Compared with the complex connecting structure which is integrally connected through various fasteners and connecting pieces in the prior art, the flexible connecting structure which is connected through the mooring rope 2 or the anchor chain has the advantages of simple structure, remarkable convenience in realization and production, and remarkably reduced design difficulties such as structural connectivity design, fatigue strength, rigidity of the connecting structure and the like; and this connection structure can dismantle repeatedly the connection, and each floating platform module 1 can carry out the combined connection of various structural modes according to the difference of sea area and the difference of functional requirement, has higher economic nature. The passage channels 4 between the floating platform modules 1 can be cableways, trestles, floating bridges or even ships, and from the connection structure and the passage channels 4, the construction difficulty of the offshore floating island is obviously reduced, and the used cost is also obviously reduced.
Each of the floating platform modules 1 constituting the offshore floating island includes a main floating body frame 11 for bearing main buoyancy, a work platform disposed in parallel above the main floating body frame 11, and a lower frame 13 disposed in parallel to the main floating body frame 11. The main floating body frame 11 is formed by connecting a columnar floating body which is parallel to the sea surface and extends along the ring shape end to end, the offshore operation platform 12 is provided with a platform layer surface used for connecting various functional structures for offshore operation, and the lower frame body 13 is positioned below the horizontal plane, bears the secondary buoyancy and can provide stable force for the whole module and prevent the module from shaking left and right or sinking. The main floating body frame 11 and the lower frame body 13 are both of a closed annular structure, and the main floating body frame 11 and the offshore operation platform 12, and the main floating body frame 11 and the lower frame body 13 are connected through a longitudinal hollow-out type connecting structure 14 to support the offshore operation platform 12, so that an integral frame is formed. And the displacement of the main floating body frame 11 is larger than the total structural weight of the floating platform module 1, namely the waterline surface is positioned at the position of the main floating body frame 11 under normal sea conditions, and the hollow connecting structure 14 is formed by a floating body in a hollow structure.
Specifically, because the main floating body frame 11 and the lower frame body 13 are both in an annular structure, as shown in fig. 2, the center of the frame is hollowed out, and the columnar floating body, the components forming the lower frame body 13 and the hollowed-out connecting structure 14 are all positioned on the outer side of the frame to bear the main weight and provide stability, the main floating body frame 11 floats on the sea surface, provides most of buoyancy and has a large water plane, and the structure greatly improves the stability of the whole floating platform module 1 and the self-adjustability of the module posture change caused by the weight change; and the whole frame structure is simple and firm, and has very high strength, impact resistance and anti-sinking capability, so that the floating platform module 1 with the structure has very good stability and stability. Therefore, the offshore floating island formed by combining the floating platform modules 1 has good stability and storm resistance.
On the basis, longitudinal connecting structures between the main floating body frame 11 and the offshore operation platform 12 and between the main floating body frame 11 and the lower frame body 13 are hollow connecting structures 14, so that each frame is hollow, most of sea waves directly cross or penetrate through the main floating body frame 11 from gaps when the sea waves impact the frame, the storm load borne by a single platform module is effectively reduced, the swing of the module caused by the impact of the sea waves is obviously reduced, and particularly under severe sea conditions, the safety of the whole offshore floating island can be improved; and under normal sea conditions, because the draught level or the waterline surface is located on the main floating body frame 11, the radial dimension of the columnar floating body is larger, and under normal sea conditions, the lower end part of the columnar floating body of the main floating body frame 11 along the sea water depth direction is located below the water surface, the upper end part is located above the water surface, and the hollow connecting structure 14 formed by the floating body is also located above the water surface, so that each floating platform module 1 and the whole offshore floating island in the embodiment have larger reserve buoyancy and larger waterline surface: the large waterplane area can improve the stability of each module and the whole island under normal sea conditions, and the large reserve buoyancy enables the draught position to be located on the hollow connecting structure 14 of each floating platform module 1 in a ballasting mode under storm sea conditions, so that the waterplane area is obviously reduced to enable each floating platform module 1 and the whole offshore floating island to enter a semi-submerged state on the premise of ensuring the stability. Therefore, the waterline surface of the island can be obviously reduced, the borne environmental load is reduced, the impact of wind and wave on each platform module and the whole island is reduced, the generated sloshing degree is reduced, the storm resistance is improved, the safety of each floating platform module 1 and the whole offshore floating island is ensured, and the flexible connecting structure ensures that the floating platform modules 1 have buffering performance under severe sea conditions and further improves the self-adjusting capacity of the whole offshore floating island to adapt to the sea conditions.
In terms of the overall structure, compared with the floating platform in the prior art, the floating platform module 1 and the offshore floating island provided by the embodiment have the advantages of simple structural form, small number of connection points, quick and convenient production, low investment cost and low construction difficulty, and can be quickly copied in batches to form a large scale. The offshore platform 12 may be used to perform various offshore activities, such as marine production, marine production or accommodation, and recreation. Under normal sea conditions, when draught is located in the main floating body frame 11, an offshore operation platform is formed on the upper surface of the main floating body frame 11, water surface operation activities can be conveniently carried out, a safe guarantee space is formed by the main floating body frame 11 and the lower frame body 13 which are of annular structures, and appropriate underwater operation activities such as underwater production operations can be carried out in the lower frame body 13. Each floating platform module 1 and the whole offshore floating island of the embodiment can conveniently carry out operation activities on the water surface, on the water surface and under the water surface at the same time, and a multi-layer three-dimensional collaborative development ocean economic development mode with complementary advantages is formed.
Furthermore, supporting platforms can be arranged in the annular space of the main floating body frame 11 and the annular space of the lower frame body 13, so that offshore and undersea operation platforms with more convenient and larger supporting areas are formed. In particular, the support platform may be hollowed out to facilitate the passage of sea water and waves through the gap, counteracting and mitigating the impact on the base platform module. The offshore operation platforms 12 and the lower frame bodies 13 can be arranged in a plurality of axial directions along the connecting columns, and the two adjacent offshore operation platforms 12 and the two adjacent lower frame bodies 13 are connected through the hollow-out connecting structures 14. As the number of work platforms and lower frames 13 increases, the radial dimension of the ring structure of the main float frame 11 increases. The number of the working platforms and the number of the lower frame bodies 13 are increased to increase the number of the offshore working platforms 12 and the number of the offshore working platforms of each floating platform module 1, and the plurality of working platforms are stacked, so that a floor type working space is provided, the whole offshore floating island has a plurality of scattered floor type working spaces, so that the working activities of various different contents can be conveniently realized in the same sea area, and the working activities of various different contents respectively have independent working platforms, so that the offshore working platform has high space operability and development convenience, and has remarkable economic effect on the development of offshore economy.
Specifically, fretwork formula connection structure 14 is including a plurality of vertical extensions and along the spliced pole of the annular circumference distribution of main body frame 11, has both played the effect of firm support and has great fretwork space gap again. And the radial dimension of each connecting column is in a structure with a large middle and small two ends along the axial direction, as shown in fig. 2, namely, a convex ring is arranged at the middle position of the axial direction, the radial dimension of the convex ring is larger than that of the rest positions, and the convex ring and the rest parts of the connecting columns at the two sides of the convex ring are in fillet transition, so that the radial dimension of the connecting columns is changed. So set up, when making the waterline face be located the spliced pole through the mode that increases the ballast under the stormy sea condition, thereby can increase the ballast according to specific conditions and select the position of draught on the spliced pole and decide the size of waterline face by the radial dimension of the spliced pole of this position, then each floating platform module 1 has carries out the function of self waterline face size regulation according to the sea condition, and whole marine floating island also has the function of adjusting whole waterline face size, further improves the ability that adapts to various sea conditions. The connecting column between the main float frame 11 and the lower frame 13 may also be axially equally radially dimensioned as shown in fig. 2.
Specifically, the ring structures of the main float frame 11 and the lower frame 13 may be circular rings or polygonal rings. If a polygonal shape is used, preferably a hexagonal shape as shown in fig. 2, a larger space area can be occupied and the structural stability can be optimized. Specifically, the columnar floating bodies can be hollow column tubes made of steel or waterproof composite materials. Preferably, the columnar floating body is made of hollow column pipes and is of a hollow structure, the columnar floating body can have a large section size under the same weight, the waterplane area or the water discharge can be increased, and the stability of the frame can be enhanced; further, the radial section of the cylindrical floating body is rectangular or polygonal, so that the cylindrical floating body has two layers parallel to the sea surface, and compared with the section which is circular, the waterplane can be further increased, and the stability is enhanced. The inner space of the columnar floating body can be utilized and set into a cabin structure, and a plurality of cabins can be distributed along the circumferential direction of the columnar floating body and used as different functional areas, such as storage areas of ballast water, fresh water or oil, mechanical cabins and the like.
As shown in fig. 2, each offshore work platform 12 may adopt an integrated platform structure, and the upper end surface of the platform may be used as the layer surface of the offshore work platform 12 for supporting and connecting various functional structures for performing offshore work activities, such as an upper building, etc., while the offshore work platform 12 may be a hollow structure, and the space thereof may be specifically utilized according to functional requirements, such as hotel, etc. The upper end of the connecting column in the axial direction is connected with the lower end face of the platform, and the lower end of the connecting column is connected with the columnar floating body. The offshore work platform 12 may include an upper frame having an annular structure and an integrated platform laid above the upper frame. The ring shape of the upper frame body may be the same as the ring shape of the main float frame 11. The upper end of a connecting column between the main floating body frame 11 and the offshore operation platform 12 is connected with the upper frame body, and the lower end is connected with the columnar floating body. The upper frame body is formed by a rod piece in an annular structure, a support rod can be arranged in the annular space of the upper frame body, and two ends of the support rod are respectively connected with different positions of the inner wall of the annular space. The bracing piece has a plurality ofly, can unify and arrange along a direction, also can arrange along two mutually perpendicular's directions, form network structure, can also all follow the radial extension of annular space, form the structure of crossing in the centre of a circle department of annular space. Each support rod plays a role in supporting and stabilizing the integrated platform. The upper frame and the support rods can be floating body structures formed by hollow column pipes so as to provide reserve buoyancy under severe sea conditions. When the annular space of the annular structure is circular, the radial direction of the annular space refers to the diameter direction of the circle; when the annular space is polygonal, the radial direction of the annular space refers to the diameter direction of the circumscribed circle of the polygon, i.e., the diagonal direction of the polygon.
The supporting platform in the annular holes of the main floating body frame 11 and the lower frame body 13 can be a hollow integrated supporting layer, such as a steel mesh, or can be formed by a plurality of long rod-shaped floating bodies of which two ends are respectively connected to the inner wall of the annular space. Each long rod-shaped floating body can be uniformly arranged along one direction, can also be arranged along two mutually perpendicular directions to form a net structure, and can also extend along the radial direction of the annular space to form a structure which is crossed at the center of the annular space. And the connection among all the parts can adopt a welding mode, so that the whole frame has high strength.
The passage channel 4 between each floating platform module 1 can be a trestle or a floating bridge or a shuttle or a cableway formed by cables 2, and the layout of the integral passage channel 4 of the offshore floating island can be any one of the modes or any combination of the modes. As shown in fig. 3, a fixed end between any two adjacent floating platform modules 1, which can establish a passage on the respective offshore platform 12, is connected with a plurality of parallel steel cables between the two fixed ends, and cable cars can be arranged on the steel cables or the passages can be laid between the two adjacent steel cables. The two fixed ends of the passage can also be arranged on the main buoy frame 11, respectively, for the transfer of personnel and cargo for offshore operations. And the upper surface of the main floating body frame 11 may be provided with a passage, such as a ladder or an elevator, connected with the offshore working platform 12. The arrangement of the passage channel 4 can ensure the communication among all the components of the offshore floating island, and also reduces the construction difficulty.
The combined shape of each floating platform module 1 of the offshore floating island can be specifically set according to the specific actual production operation requirement. In this embodiment, as shown in fig. 1, the floating island at sea comprises a peripheral positioning module combination in a closed ring shape and a central module combination located in the annular space of the ring shape. The peripheral positioning module combination comprises a plurality of floating platform modules 1 which are connected in sequence, and the whole floating platform module combination is of an annular structure, so that the whole stability of connection can be enhanced. The central module assembly is formed by at least one floating platform module 1, is filled in the annular space of the peripheral positioning module assembly and is connected with each floating platform module 1 of the peripheral positioning module assembly through a cable 2 or an anchor chain, so that the connection stability is enhanced. If the central module assembly comprises a plurality of floating platform modules 1, the floating platform modules 1 are connected with each other through cables 2 and anchor chains to form a stable net-shaped connection mode, so that the stability and the inclination resistance of the whole offshore floating island can be enhanced.
The offshore floating island is fixed at the destination sea area by a mooring system 3. Either the combination of peripheral positioning modules is secured by mooring system 3 or each of the floating platform modules 1 is secured by mooring system 3. The mooring system 3 comprises an anchor submerged in the sea bottom and an anchor chain connected thereto, the other end of which is tied to each floating platform module 1. The anchor chains and the anchors are connected in an equal number and in a one-to-one correspondence manner, the anchor chains are distributed along the circumferential direction of the annular structure of each floating platform module 1, most of the anchor chains are connected with the main floating body frame 11, and a small number of the anchor chains are connected with the lower frame body 13 and the offshore operation platform 12. Each floating platform module 1 is fixed in a mooring mode, so that the offshore floating island can be movable, and the working sea area can be replaced. The specific structure of the anchor chain and the anchor is not particularly limited herein. Furthermore, the mooring system 3 may also comprise components for other functions, such as positioning, loading or adjusting the telescopic length of the anchor chain, which are not illustrated here.
As shown in fig. 4, the present embodiment also provides an offshore floating island group formed by the above-mentioned offshore floating islands, which comprises at least two above-mentioned offshore floating islands located in the same sea area, wherein the communication of people and cargo is realized between the offshore floating islands through passage and transfer channels. The offshore island group provided by the embodiment has the advantages of low construction difficulty, low cost, diversified structural modes, high storm resistance and capability of self-adjusting according to sea conditions to adapt to various sea conditions. The derivation process of the beneficial effect is substantially similar to the derivation process of the beneficial effect brought by the offshore floating island, and the description is omitted here.
The embodiment also provides a construction method of the offshore floating island, which comprises the following steps:
processing and welding a plurality of columnar floating bodies or rod-shaped floating bodies to construct a floating platform module 1;
connecting a plurality of floating platform modules 1 through cables 2 or anchor chains to form a peripheral positioning module combination in a closed annular structure, tying the anchor chains to each connection point of the floating platform modules 1, and fixing the peripheral positioning module combination in a destination sea area through a mooring system 3;
positioning at least one floating platform module 1 in the annulus of the annular structure to form a central module combination, wherein the central module combination is connected with a peripheral positioning module through a cable 2 or an anchor chain;
the passage way 4 is constructed by one or any combination of trestle or floating bridge or shuttle or cableway formed by the cables 2.
From the construction method, it is obvious that the construction difficulty of the offshore floating island provided by the embodiment is obviously reduced compared with that of the integrated large floating platform in the prior art, and the construction cost is reduced.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments. The multiple schemes provided by the invention comprise basic schemes, are independent from each other and are not restricted with each other, but can be combined with each other under the condition of no conflict, so that multiple effects are realized together.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An offshore floating island, comprising:
a plurality of floating platform modules (1) capable of floating on the surface of water, each floating platform module (1) being provided with: the floating structure comprises a main floating body frame (11), wherein the main floating body frame (11) comprises a columnar floating body which extends along the annular direction and is connected end to form a closed ring; the offshore operation platform (12) is arranged above the main floating body frame (11) and provided with an offshore operation platform (12) layer, the offshore operation platform (12) layer is used for bearing various offshore operation tools and buildings, the offshore operation platform (12) is connected with the main floating body frame (11) through a longitudinally extending hollow-out type connecting structure (14), and the hollow-out type connecting structure (14) is formed by a floating body in a hollow structure; the lower frame body (13) is arranged below the main floating body frame (11), the lower frame body (13) is provided with an annular floating body in a closed annular structure, and the lower frame body (13) is connected with the main floating body frame (11) through the hollow connecting structure (14); the displacement of the main floating body frame (11) is larger than the total structural weight of the floating platform module (1);
a cable (2) or anchor chain connecting two adjacent floating platform modules (1);
a passage channel (4) arranged between each of the floating platform modules (1) for the circulation of personnel and cargo;
a mooring system (3) for securing each of said floating platform modules (1) to a destination sea area.
2. An offshore floating island according to claim 1, wherein a plurality of offshore platforms (12) and a plurality of lower frames (13) are arranged in a direction perpendicular to the sea surface, and two adjacent offshore platforms (12) and two adjacent lower frames (13) are connected by the hollowed-out connecting structure (14).
3. An offshore floating island according to claim 1, wherein the hollowed-out connecting structure (14) comprises a plurality of connecting columns extending vertically and distributed along the circumferential direction of the ring shape of the main floating body frame (11), and the radial dimension of each connecting column at the draught position of the storm sea state is a structure with a large middle and two small ends along the axial direction.
4. The offshore floating island according to claim 1, wherein a support platform laid in the annular space is arranged in the annular space of the annular structure of the lower frame body (13) and the annular space of the main floating body frame (11), and the support platform is of a hollow structure; the columnar floating body is of a hollow structure, and a cabin structure used for containing objects is arranged in the inner space of the columnar floating body.
5. An offshore floating island according to claim 1, wherein the passage channel (4) is provided as one or any combination of trestle or pontoon or cableway formed by shuttle or cable (2).
6. The offshore floating island of claim 1, wherein the offshore floating island comprises a peripheral positioning module assembly in the form of a closed ring structure and a central assembly module positioned within the annulus of the ring structure; the peripheral positioning module is combined with a plurality of floating platform modules (1) which are sequentially connected through cables (2) or anchor chains, and the central combined module comprises at least one floating platform module (1); the central combined module is connected with the peripheral positioning module through a cable (2) or an anchor chain; the mooring system (3) is connected with the peripheral positioning module combination.
7. An offshore floating island according to claim 6, wherein the central module is provided with a plurality of floating platform modules (1) and each of the floating platform modules (1) is connected by a cable (2) or a chain.
8. An offshore floating island group comprising at least two floating islands, wherein the floating islands are the offshore floating islands of any one of claims 1-7; and a passage and operation channel is arranged between each offshore floating island.
9. The offshore floating island population of claim 8, wherein the passage and circulation channels are provided by any one or a combination of any number of trestles, pontoons, shuttles or cableways.
10. A method of constructing an offshore floating island according to any of claims 1 to 7, comprising:
-building the floating platform module (1);
connecting a plurality of floating platform modules (1) through cables (2) or anchor chains to form the peripheral positioning module combination in a closed annular structure, and fixing the peripheral positioning module combination at a destination sea area through a mooring system (3);
-positioning at least one of said floating platform modules (1) in the annulus of said annular structure forming said central module assembly, said central module assembly being connected to said peripheral positioning modules by cables (2) or hawsers;
the passage channel (4) is constructed by one or any combination of a plurality of ways in a cableway formed by a trestle or a floating bridge or a shuttle boat or a cable (2).
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| CN201910675345.XA CN112278173A (en) | 2019-07-25 | 2019-07-25 | Offshore floating island, offshore floating island group and offshore floating island construction method |
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| CN201910675345.XA CN112278173A (en) | 2019-07-25 | 2019-07-25 | Offshore floating island, offshore floating island group and offshore floating island construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110395364A (en) * | 2019-08-23 | 2019-11-01 | 上海蕤洋海洋工程技术有限公司 | The construction method on offshore floating type island, offshore floating type island group and offshore floating type island |
| CN114228929A (en) * | 2021-12-31 | 2022-03-25 | 上海刊宝科技有限公司 | Tension leg ocean platform for offshore photovoltaic power generation |
-
2019
- 2019-07-25 CN CN201910675345.XA patent/CN112278173A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110395364A (en) * | 2019-08-23 | 2019-11-01 | 上海蕤洋海洋工程技术有限公司 | The construction method on offshore floating type island, offshore floating type island group and offshore floating type island |
| CN114228929A (en) * | 2021-12-31 | 2022-03-25 | 上海刊宝科技有限公司 | Tension leg ocean platform for offshore photovoltaic power generation |
| CN114228929B (en) * | 2021-12-31 | 2022-12-23 | 上海刊宝科技有限公司 | Tension leg ocean platform for offshore photovoltaic power generation |
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Application publication date: 20210129 |