Umbrella-like floating platform and tensioning method thereof

Abstract

The invention provides an umbrella-like floating platform and a tensioning method thereof. The umbrella-like floating platform and the tensioning method are used for solving the problem that an existing floating platform is large in weight and high in manufacturing cost. Comprising a platform ring and a pressed ring which are arranged in parallel, and a plurality of side stand column buoys are vertically connected between the platform ring and the pressed ring; a central stand column is further arranged at the central axis of the platform ring and the pressed ring, the bottom end of the central stand column extends out of the lower end face of the pressed ring, and a plurality of first inhaul cables and second inhaul cables are arranged between the pressed ring and the top end and the bottom end of the central stand column respectively. The first inhaul cables and the second inhaul cables are arranged in an annular array mode along the central axis of the central stand column. By arranging the inhaul cables, the inhaul cable tension steel structure is pressed, a tension-compression balanced prestressed cable net system is formed, under the condition that the stress performance of the whole structure is kept unchanged, the steel consumption of the platform is remarkably reduced, the purpose of the lightweight structure is achieved, and then the manufacturing cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of floating platforms, and in particular to a pseudo-umbrella floating platform and its tensioning method. Background Technology

[0002] With the continuous development of marine wind energy, solar energy and other resources, floating platforms, as an important marine engineering structure, have shown broad application prospects and can be used as offshore photovoltaic platforms.

[0003] To maintain stability under wind and waves, traditional offshore photovoltaic platforms typically employ a frame-type steel structure to construct floating platforms, resulting in high stability. However, this structure consumes a large amount of steel, leading to high platform costs. The significant weight also necessitates the installation of more buoyancy components, further increasing costs and the difficulty of towing the floating platform. Therefore, reducing the weight of floating platforms while maintaining strength has become a pressing issue for the development of floating photovoltaic platforms. Summary of the Invention

[0004] The purpose of this invention is to provide a simulated umbrella-shaped floating platform and its tensioning method, which utilizes a prestressed cable net structure to solve the technical problem of high cost caused by the large weight of existing floating platforms.

[0005] A simulated umbrella-shaped floating platform includes a platform ring and a pressure ring arranged in parallel, and a plurality of side column floats are connected between the platform ring and the pressure ring.

[0006] A central column is also provided at the central axis of the platform ring and the pressure ring. The bottom end of the central column extends out of the lower end face of the pressure ring. A plurality of first cables and second cables are respectively provided between the top and bottom ends of the pressure ring and the central column. The plurality of first cables and second cables are arranged in a circular array along the central axis of the central column.

[0007] Optionally, a first tensioning sleeve and a second tensioning sleeve are respectively fitted onto the outer walls of the upper and lower parts of the central column;

[0008] One end of several first cables is hinged to the outer wall of the first tensioning sleeve, and several second cables are hinged to the outer wall of the second tensioning sleeve. A first driving assembly and a second driving assembly are symmetrically arranged on the upper and lower outer walls of the central column. The first driving assembly and the second driving assembly are used to drive the first tensioning sleeve and the second tensioning sleeve to slide towards the top and bottom of the central column, respectively.

[0009] Optionally, both the first and second drive components include a reaction platform disposed on the outer wall of the central column;

[0010] The reaction platform is equipped with a ring array of jacks. The telescopic end of the jack of the first drive component is connected to the first tensioning sleeve, and the telescopic end of the jack of the second drive component is connected to the second tensioning sleeve.

[0011] Optionally, a gravity anchor is provided below the central column, and several moorings are connected between the gravity anchor and the bottom of the central column; a counterweight is provided at the lower end of the central column.

[0012] One end of each of the moorings is connected to the bottom of the central column, and the other end of each mooring is connected to a gravity anchor in a circular array along the axis of the central column. The axis of the moorings is set at an acute angle to the end face of the gravity anchor.

[0013] Optionally, the top of the central column and the top surface of the platform ring are located on the same plane, and a few support spokes are provided between the central column and the platform ring;

[0014] One end of each of the aforementioned support spokes is connected to the top of the central column, and the other ends of the aforementioned support spokes are connected in a circular array to the platform ring.

[0015] Optionally, a plurality of support purlins are installed on the support spokes, the plurality of support purlins are arranged in parallel, and photovoltaic panels are installed on the support purlins.

[0016] Optionally, both the first and second cables are pre-tensioned carbon fiber cables.

[0017] Optionally, a ladder is also installed between the platform ring and the pressure ring.

[0018] A tensioning method for a simulated umbrella-shaped floating platform, used for the tensioning of the aforementioned simulated umbrella-shaped floating platform, comprises the following steps:

[0019] S1: Fit the first tension sleeve and the second tension sleeve onto the upper and lower parts of the central column, and install several first and second tension cables in sequence;

[0020] S2: Install several jacks between the reaction platform and the first tension sleeve and the second tension sleeve;

[0021] S3: The jack pushes out several first and second cables for tensioning;

[0022] S4: After tensioning is in place, install a limiting seat between the reaction platform and the first tensioning sleeve and the second tensioning sleeve;

[0023] S5: Depressurize and remove the jack; tensioning complete.

[0024] Because of the adoption of the above technical solution, the present invention has the following advantages:

[0025] 1. This application sets up a prestressed cable net system, which makes the carbon fiber cable tensioned and the steel structure compressed, forming a tensile-compression balanced structural system. While maintaining the overall structural stress performance, it significantly reduces the amount of steel used in the platform, achieving the purpose of lightweight structure, and thus greatly reducing the cost.

[0026] 2. The size of the gravity anchor in this application is much smaller than that of the platform ring and the pressure ring. Its unique mooring form greatly reduces the sea area occupied and lowers the difficulty of installation.

[0027] 3. The structure of this application is umbrella-shaped, with the central column and the counterweight at its lower end acting like an umbrella handle, which helps to lower the overall center of gravity of the structure, even below the center of buoyancy, thus forming a ballast-stable floating structure.

[0028] 4. In this application, the perimeter columns are set as pontoons to provide buoyancy for the entire structure. Their waterline shape is far from the center, and their cross-sectional moment of inertia is the largest, thus their stability radius is also the largest, making it the form with the best buoyancy stability.

[0029] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0030] The accompanying drawings of this invention are described below.

[0031] Figure 1 This is a schematic diagram of the structure of the umbrella-shaped floating platform of the present invention.

[0032] Figure 2 This is a schematic diagram of the structure of the umbrella-shaped floating photovoltaic platform of the present invention.

[0033] Figure 3 This is a schematic diagram of the structure of the first tensioning sleeve and the first driving component before tensioning according to the present invention.

[0034] Figure 4 This is a schematic diagram of the structure of the second tensioning sleeve and the second driving component before tensioning in this invention.

[0035] Figure 5 This is a schematic diagram of the structure of the first tensioning sleeve and the first driving component after tensioning according to the present invention.

[0036] In the diagram: 1-Platform ring; 2-Pressure ring; 3-Side column float; 4-Central column; 5-First cable; 6-Second cable; 7-First tension sleeve; 8-Second tension sleeve; 9-Reaction platform; 10-Jack; 11-Gravity anchor; 12-Mooring; 13-Support spokes; 14-Support purlins; 15-Photovoltaic panel; 16-Ladder; 17-Limit seat; 18-Counterweight block. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0038] Example 1:

[0039] like Figure 1 The illustrated umbrella-shaped floating platform includes a platform ring 1 and a pressure ring 2 arranged in parallel. Several side column floats 3 are vertically connected between the platform ring 1 and the pressure ring 2. The side column floats can be arranged vertically or inclined. When inclined, the outline dimensions of the platform ring and the pressure ring are different.

[0040] A central column 4 is also provided at the central axis of the platform ring 1 and the pressure ring 2. The bottom end of the central column 4 extends out of the lower end face of the pressure ring 2. A plurality of first cables 5 and second cables 6 are respectively provided between the top and bottom ends of the pressure ring 2 and the central column 4. The plurality of first cables 5 and second cables 6 are arranged in a circular array along the central axis of the central column 4.

[0041] like Figure 1 As shown, the top of the central column 4 and the top surface of the platform ring 1 are located on the same plane, and several support spokes 13 are provided between the central column 4 and the platform ring 1; one end of each of the support spokes 13 is connected to the top of the central column 4, and the other end of each of the support spokes 13 is connected to the platform ring 1 in a circular array.

[0042] In this embodiment, both the platform ring 1 and the pressure ring 2 are polygonal or circular structures formed by bolting together multiple standard segments. The cross-sectional shape of the standard segments is tubular or truss-shaped. Several side column floats 3 are arranged in a circular array to maintain stable buoyancy. The side column floats 3 are cylindrical, with an internal skeleton and an outer fiberglass shell, with foam filling the space between the skeleton and the outer shell. The central column 4 is formed by bolting together several column segments. The first cable 5 and the second cable 6 are both prestressed carbon fiber cables. The support spokes 13 can be one of steel pipes, trusses, and cables. By setting carbon fiber cables, this application makes the steel structure under tension and compressive, forming a prestressed cable net system with tension and compression balance. While maintaining the overall structural stress performance, it significantly reduces the amount of steel used in the platform, achieving the purpose of lightweight structure and thus greatly reducing costs. In this embodiment, all steel components of the platform are wrapped with fiberglass cloth for corrosion protection, extending their service life.

[0043] like Figure 1 , Figure 3 and Figure 4 As shown, a first tensioning sleeve 7 and a second tensioning sleeve 8 are respectively fitted on the outer walls of the upper and lower parts of the central column 4;

[0044] One end of several first tension cables 5 is hinged to the outer wall of the first tension sleeve 7, and several second tension cables 6 are hinged to the outer wall of the second tension sleeve 8. A first driving assembly and a second driving assembly are symmetrically arranged on the upper and lower outer walls of the central column 4. The first driving assembly and the second driving assembly are used to drive the first tension sleeve 7 and the second tension sleeve 8 to slide towards the top and bottom of the central column 4, respectively.

[0045] like Figure 1 , Figure 3 and Figure 4 As shown, both the first and second drive components include a reaction platform 9 disposed on the outer wall of the central column 4;

[0046] The reaction platform 9 is equipped with a ring array of jacks 10. The telescopic end of the jack 10 of the first drive component is connected to the first tensioning sleeve 7, and the telescopic end of the jack 10 of the second drive component is connected to the second tensioning sleeve 8.

[0047] In this embodiment, during platform assembly, one end of the first cable 5 and the second cable 6 are first hingedly mounted to the pressure ring 2 in a circular array. Then, the other ends of the first cable 5 and the second cable 6 are hingedly mounted to the first tensioning sleeve 7 and the second tensioning sleeve 8. Next, the jack 10 is placed between the reaction platform 9 and the tensioning sleeve (at this time, the jack 10 is in the extended position). Tensioning begins with the jack 10 extending. Figure 5 As shown, after tensioning to the desired position, a limiting seat 17 is installed between the reaction platform 9 and the tensioning sleeve, and the jack 10 is depressurized and removed. Through the above steps, the tensioning of the first cable 5 and the second cable 6 is achieved. The tensioned floating platform structure is stable and has good stress distribution.

[0048] like Figure 1 and Figure 2 As shown, a counterweight 18 is provided at the lower end of the central column 4, and a gravity anchor 11 is provided below it. Several moorings 12 are connected between the gravity anchor 11 and the bottom end of the central column 4.

[0049] One end of each of the moorings 12 is connected to the bottom of the central column 4, and the other end of each of the moorings 12 is connected to the gravity anchor 11 in a circular array along the axis of the central column 4. The axis of the moorings 12 is set at an acute angle to the end face of the gravity anchor 11.

[0050] In this embodiment, the gravity anchor 11 provides a downward anchoring load to the platform using its own weight, serving as the platform's anchoring point. The gravity anchor is a reinforced concrete block with pre-embedded anchoring members for mooring. The pre-embedded anchoring members on the gravity anchor 11 are arranged in a ring array. The mooring 12 is a mooring cable or mooring chain, and its arrangement can be configured as a single-point mooring. In this embodiment, the size of the gravity anchor 11 is much smaller than the size of the platform ring 1 and the pressure ring 2. Its unique mooring form greatly reduces the sea area occupied and lowers the installation difficulty.

[0051] like Figure 2 As shown, a plurality of support purlins 14 are installed on the support spokes 13. The support purlins 14 are orthogonally arranged to the support spokes 13, and photovoltaic panels 15 are installed on the support purlins 14.

[0052] In this embodiment, the support purlin 14 is a steel section or cable, which is fixedly connected to the support spoke 13 and serves as a mounting bracket for the photovoltaic panel 15.

[0053] like Figure 2 As shown, a ladder 16 is also installed between the platform ring 1 and the pressure ring 2.

[0054] In this embodiment, a ladder 16 is provided to facilitate the installation and maintenance of the platform. The platform also includes auxiliary facilities such as monitoring equipment, cables, a power distribution box, and walkways.

[0055] Example 2:

[0056] like Figure 3 , Figure 4 and Figure 5 The tensioning method for a pseudo-umbrella floating platform shown is characterized by the following steps for tensioning the pseudo-umbrella floating platform described in Example 1:

[0057] S1: Fit the first tension sleeve 7 and the second tension sleeve 8 onto the upper and lower parts of the central column 4, and install several first cables 5 and second cables 6 in sequence;

[0058] S2: Install several jacks 10 between the reaction platform 9 and the first tension sleeve 7 and the second tension sleeve 8;

[0059] S3: Jack 10 pushes out several first cable 5 and second cable 6;

[0060] S4: After tensioning is in place, a limiting seat 17 is installed between the reaction platform 9 and the first tensioning sleeve 7 and the second tensioning sleeve 8;

[0061] S5: Depressurize and remove jack 10; tensioning complete.

[0062] In this embodiment, tensioning is completed when the tensioning reaches the predetermined position. After tensioning, the carbon fiber cables in the floating platform are under tension and the steel structure is under compression, forming a structural system in tension-compression balance.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A simulated umbrella-shaped floating platform, characterized in that, It includes a platform ring (1) and a pressure ring (2) arranged in parallel, and a number of side column floats (3) are vertically connected between the platform ring (1) and the pressure ring (2); A central column (4) is also provided at the central axis of the platform ring (1) and the pressure ring (2). The bottom end of the central column (4) extends out of the lower end face of the pressure ring (2). A plurality of first cables (5) and second cables (6) are respectively provided between the top and bottom ends of the pressure ring (2) and the central column (4). The plurality of first cables (5) and second cables (6) are arranged in a ring array along the central axis of the central column (4).

2. The umbrella-shaped floating platform according to claim 1, characterized in that, The upper and lower outer walls of the central column (4) are respectively fitted with a first tension sleeve (7) and a second tension sleeve (8); One end of several first tension cables (5) is hinged to the outer wall of the first tension sleeve (7), and several second tension cables (6) are hinged to the outer wall of the second tension sleeve (8). A first driving assembly and a second driving assembly are symmetrically arranged on the upper and lower outer walls of the central column (4). The first driving assembly and the second driving assembly are used to drive the first tension sleeve (7) and the second tension sleeve (8) to slide towards the top and bottom of the central column (4), respectively.

3. The umbrella-shaped floating platform according to claim 2, characterized in that, Both the first and second drive components include a reaction platform (9) disposed on the outer wall of the central column (4); The reaction platform (9) is equipped with a ring array of jacks (10). The telescopic end of the jack (10) of the first drive component is connected to the first tension sleeve (7), and the telescopic end of the jack (10) of the second drive component is connected to the second tension sleeve (8).

4. The umbrella-shaped floating platform according to claim 1, characterized in that, A gravity anchor (11) is provided below the central column (4), and several moorings (12) are connected between the gravity anchor (11) and the bottom end of the central column (4); a counterweight (18) is provided at the lower end of the central column (4). One end of each of the moorings (12) is connected to the bottom of the central column (4), and the other end of each of the moorings (12) is connected to the gravity anchor (11) in a circular array along the axis of the central column (4). The axis of the moorings (12) is set at an acute angle to the end face of the gravity anchor (11).

5. A pseudo-umbrella floating platform according to any one of claims 1-4, characterized in that, The top of the central column (4) and the top surface of the platform ring (1) are on the same plane, and a few supporting spokes (13) are provided between the central column (4) and the platform ring (1); One end of each of the support spokes (13) is connected to the top of the central column (4), and the other end of each of the support spokes (13) is connected in a ring array to the platform ring (1).

6. The umbrella-shaped floating platform according to claim 5, characterized in that, A plurality of support purlins (14) are installed on the support spokes (13), and the plurality of support purlins (14) are arranged in parallel, and photovoltaic panels (15) are installed on the support purlins (14).

7. A pseudo-umbrella floating platform according to any one of claims 1-3, characterized in that, The first cable (5) and the second cable (6) are both pre-tensioned carbon fiber cables.

8. The umbrella-shaped floating platform according to claim 1, characterized in that, A ladder (16) is also installed between the platform ring (1) and the pressure ring (2).

9. A tensioning method for a simulated umbrella-shaped floating platform, characterized in that, The specific steps for tensioning a pseudo-umbrella-shaped floating platform as described in any one of claims 1-8 are as follows: S1: Place the first tension sleeve (7) and the second tension sleeve (8) onto the upper and lower parts of the central column (4), and install several first cables (5) and second cables (6) in sequence; S2: Install several jacks (10) between the reaction platform (9) and the first tension sleeve (7) and the second tension sleeve (8); S3: Jack (10) pushes out several first cables (5) and second cables (6) for tensioning; S4: After tensioning is in place, a limiting seat (17) is installed between the reaction platform (9) and the first tensioning sleeve (7) and the second tensioning sleeve (8); S5: Depressurize and remove the jack (10), and tensioning is complete.

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