Quadrilateral steel-concrete composite structure floating platform and construction method thereof

Abstract

The invention discloses a quadrilateral steel-concrete combined structure floating platform and a construction method thereof, and belongs to the technical field of floating platforms, the quadrilateral steel-concrete combined structure floating platform comprises a floating platform and a buoy, the floating platform comprises a first floating body unit, a second floating body unit, a third floating body unit and a connecting body, the two ends of the first floating body unit are connected with the second floating body unit and the third floating body unit through the bending units correspondingly. The connecting body and the first floating body unit are arranged in parallel, and the two ends of the connecting body are connected to the second floating body unit and the third floating body unit respectively; each of the first floating body unit, the second floating body unit and the third floating body unit is formed by sequentially splicing a plurality of floating body parts end to end, and every two adjacent floating body parts are connected through a steel strand; a plurality of buoys are arranged, and each buoy is arranged at the top of the floating platform. The floating platform conveying device has the effect that the floating platform can be conveniently and rapidly conveyed to a designated installation position for installation.

Description

Technical Field

[0001] The invention relates to the field of floating platforms, in particular to a quadrilateral steel-concrete composite structure floating platform and a construction method thereof. Background Art

[0002] A floating platform is a large floating structure, usually used for marine engineering, oil exploration and development, and other offshore activities. It can be moved and deployed at sea, with high flexibility and adaptability. Floating platforms usually have a large operating space, where various equipment and tools can be installed to support different offshore operation requirements.

[0003] The floating platform used to provide buoyancy and stability for the wind turbine units usually adopts a steel-concrete composite structure, that is, a steel and concrete composite structure, which mainly refers to a structure in which steel components and concrete or reinforced concrete components are combined into a whole and work together. This structure combines some characteristics of steel structure and reinforced concrete structure, and is widely used in construction engineering, bridge engineering, highway and urban road engineering, underground engineering, marine engineering and special containers.

[0004] The prior art quadrilateral steel-concrete composite floating platform generally includes a floating platform and a pontoon, wherein the floating platform is an integrated quadrilateral arrangement, a plurality of pontoons are arranged and all are fixedly arranged on the top of the floating platform, and one of the pontoons is used to connect with the wind turbine. The integrated floating platform structure is relatively large in size, which is not convenient for quickly transporting the floating platform to a designated location for installation. Summary of the invention

[0005] In order to facilitate the rapid transportation of the floating platform to a designated installation location for installation, the present application provides a quadrilateral steel-concrete composite structure floating platform.

[0006] The present application provides a quadrilateral steel-concrete composite structure floating platform, which adopts the following technical solution: A quadrilateral steel-concrete composite floating platform comprises a floating platform and a pontoon, wherein the floating platform comprises a first floating unit, a second floating unit, a third floating unit and a connector, wherein two ends of the first floating unit are respectively connected to the second floating unit and the third floating unit through a bending unit; the connector is arranged in parallel with the first floating unit, and two ends of the connector are respectively connected to the second floating unit and the third floating unit; the first floating unit, the second floating unit and the third floating unit are each formed by a plurality of floating parts being spliced ​​end to end in sequence, and two adjacent floating parts are connected by a steel strand; a plurality of pontoons are provided, and each of the pontoons is arranged on the top of the floating platform.

[0007] By adopting the above technical solution, when the floating platform needs to be transported, since the first floating unit, the second floating unit and the third floating unit are all composed of multiple floating parts, each floating part and the bending unit can be transported to the designated installation position in turn and then installed, without the need to transport the integrated floating platform structure as a whole, thereby making it easy to quickly transport the floating platform to the designated installation position for installation, and the individual size of each floating part and the bending unit is small, which facilitates the rapid production of each floating part and the bending unit.

[0008] Optionally, a first flange is fixedly installed at the end of the floating body close to the bending unit, and a second flange is fixedly installed at the end of the bending unit, and the first flange and the second flange are fixed by welding.

[0009] By adopting the above technical solution, the first flange and the second flange are fixed by welding, so that the connection between the floating body and the bending unit is reliable and stable, which is conducive to ensuring the overall structural stability of the entire platform.

[0010] Optionally, the float parts are provided with circumferentially distributed and penetrating connection holes, and the first flange is provided with a first groove in a ring shape on the side facing the second flange. The first groove is provided with avoidance holes that correspond one-to-one to the connection holes and penetrate the first groove. The connection holes and the avoidance holes are both used for passing the steel strands, and one end of the steel strand is fixed in the first groove through an anchor plate.

[0011] By adopting the above technical scheme, the setting of the anchor plate is conducive to ensuring the stability of the position of the steel strand after it is connected to each connecting cylinder section, and the setting of fixing a section of the steel strand between the first flange and the second flange facilitates the hidden protection of the steel strand, making it less likely for the steel strand to be corroded by water, which is conducive to ensuring the service life of the steel strand.

[0012] Optionally, a plurality of circumferentially distributed first reinforcing ribs are arranged in the first groove, a circle of annularly arranged second grooves are formed on the side of the second flange away from the first flange, and a plurality of circumferentially distributed second reinforcing ribs are arranged in the second groove.

[0013] By adopting the above technical solution, the provision of the first reinforcing rib and the second reinforcing rib is conducive to ensuring the structural strength of the first flange and the second flange, and further conducive to enhancing the structural strength and fatigue resistance of the joint coupling.

[0014] Optionally, when the first flange and the second flange are fixed by welding, the first groove is connected to the second groove and grouted.

[0015] By adopting the above technical solution, the grouting between the first flange and the second flange is conducive to further ensuring the connection strength between the first flange and the second flange.

[0016] Optionally, the float member is provided with a water storage cavity extending therethrough, and two connecting partitions are fixedly installed in the water storage cavity. The two connecting partitions are arranged along the length direction of the float member and divide the water storage cavity into three partition cavities, and the partition cavities are provided with a water inlet hole and a water outlet hole connected to the outside.

[0017] By adopting the above technical solution, water is injected into different partition cavities of the water storage cavity to facilitate the adjustment of the diving depth of the entire platform, thereby adapting to different installation conditions. At the same time, when facing different weather conditions, different amounts of water are injected into different partition cavities to facilitate the adjustment of the inclination of the extension piece, which is beneficial to further ensure the overall stability of the position of the floating platform.

[0018] Optionally, a sealing gasket is fixedly arranged between two adjacent floating members of the first floating unit, the second floating unit and the third floating unit.

[0019] By adopting the above technical solution, the provision of the sealing gasket makes it easy to isolate the moisture inside and outside the floating body, which is beneficial to ensure the overall stability of the connecting tube section after water is stored.

[0020] Optionally, the buoy includes an installation cylinder and a fixed cylinder, the installation cylinder is fixedly installed on the top of the first buoy unit and arranged near the middle of the length direction of the first buoy unit, two fixed cylinders are provided, the two fixed cylinders are respectively fixedly installed on the top of the second buoy unit and the third buoy unit, the distances between the two fixed cylinders and the installation cylinder are equal, and the installation cylinder is used to install the wind turbine; the connecting body includes a connecting beam and a reinforcement rod, the two ends of the connecting beam are respectively fixedly installed on the two fixed cylinders, two reinforcement rods are provided, one end of the two reinforcement rods are respectively fixedly connected to the two buoys, and the other ends are both fixedly connected to the connecting beam.

[0021] By adopting the above technical solution, the setting of the fixed cylinder is conducive to ensuring the stability of the overall position of the platform after the wind turbine is installed. The setting of the connecting beam and the reinforcement rod is conducive to further enhancing the connection stability between the two fixed cylinders on the one hand, and on the other hand, it is convenient to drag the entire platform to move on the sea surface by pulling the connecting beam.

[0022] Optionally, the connector includes two bending members and a connecting member, the two ends of the connecting member are respectively connected to the two bending members, the other ends of the two bending members are respectively connected to the second floating unit and the end of the third floating body away from the first floating unit, the connecting member includes a plurality of connecting parts spliced ​​end to end in sequence, and the connecting parts of the connecting member are connected by steel strands.

[0023] By adopting the above technical solution, the overall stress condition of the platform is made more uniform, making it easier to withstand more extreme loads and stresses in the marine environment and to more stably carry the wind turbines.

[0024] In the second aspect, the present application provides a construction method for a quadrilateral steel-concrete composite structure floating platform. Based on the above-mentioned quadrilateral steel-concrete composite structure floating platform, the following technical scheme is adopted: comprising the following specific steps: S1, splicing the prefabricated floating parts end to end in sequence and connecting them through steel strands to form a first floating unit, a second floating unit and a third floating unit respectively; S2, fixing the ends of the steel strands connecting the floating parts through anchor pads to ensure the overall stability of the first floating unit, the second floating unit and the third floating unit after splicing; S3, respectively connecting the two ends of the first floating unit with the second floating unit and the third floating unit through two bending units; S4, installing the connecting body between the second floating unit and the third floating unit; S5, installing the wind turbine on the buoy located on the first floating unit through steel strands and bolts.

[0025] By adopting the above technical scheme, since a plurality of floating parts are spliced ​​in sequence to form the first floating unit, the second floating unit and the third floating unit, each floating part and the bending unit can be transported to the designated installation position in sequence and then assembled and constructed, without the need to transport the integrated floating platform structure as a whole, thereby making it easy to quickly transport the floating platform to the designated installation position for installation, and the individual size of each floating part and the bending unit is small, which facilitates the rapid production of each floating part and the bending unit.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Since the first floating unit, the second floating unit and the third floating unit are all composed of a plurality of floating parts, each floating part and the bending unit can be transported to the designated installation position in turn and then installed, without the need to transport the integrated floating platform structure as a whole, thereby making it easy to quickly transport the floating platform to the designated installation position for installation.

[0027] 2. The setting of the anchor plate is conducive to ensuring the stability of the position of the steel strand after it is connected to each connecting cylinder segment, and the setting of fixing a section of the steel strand between the first flange and the second flange facilitates the hidden protection of the steel strand, making it less likely for the steel strand to be corroded by water, which is conducive to ensuring the service life of the steel strand.

[0028] 3. Injecting water into different partition cavities of the water storage cavity facilitates the adjustment of the diving depth of the platform as a whole, so as to adapt to different installation conditions. At the same time, in the face of different weather conditions, by injecting different amounts of water into different partition cavities, it is convenient to adjust the inclination of the extension, which is conducive to further ensuring the overall stability of the floating platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0030] Figure 2 It is an exploded schematic diagram of the connection structure of the bending unit and the floating unit in Example 1 of the present application.

[0031] Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A.

[0032] Figure 4 It is a schematic diagram of the structure of the bending unit in Example 1 of the present application.

[0033] Figure 5 It is a schematic diagram of the overall structure of Example 2 of the present application.

[0034] Description of reference numerals: 1. First floating unit; 2. Second floating unit; 3. Third floating unit; 4. Bending unit; 401. Bending section; 5. Floating member; 6. Water storage cavity; 601. Partition cavity; 7. Connecting partition; 8. Water inlet hole; 9. Water outlet hole; 10. Sealing pad; 11. Partitioning part; 12. Shifting part; 13. First flange; 14. Second flange; 15. First groove; 16. First reinforcing rib; 17. Second groove; 18. Second reinforcing rib ; 19. Connecting ribs; 20. Connecting holes; 21. Avoidance holes; 22. Anchor pads; 221. Pad body; 222. Clamp; 2221. Clamping part; 23. Limiting spring; 24. Through hole; 25. Positioning groove; 26. Placement groove; 27. End cover; 28. Installing cylinder; 29. ​​Fixing cylinder; 30. Fan; 31. Support part; 32. Connecting beam; 33. Reinforcement rod; 34. Bending member; 35. Connecting member; 351. Connecting piece. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-5This application is described in further detail.

[0036] Example 1.

[0037] The embodiment of the present application discloses a quadrilateral steel-concrete composite structure floating platform.

[0038] Reference Figure 1 The quadrilateral steel-concrete composite structure floating platform includes a floating platform and a pontoon, wherein the floating platform includes three floating units and a connector, the three floating units are respectively configured as a first floating unit 1, a second floating unit 2 and a third floating unit 3, the two ends of the first floating unit 1 are respectively connected to the second floating unit 2 and the third floating unit 3 through a bending unit 4, wherein the bending unit 4 adopts high-strength structural steel so that the bending unit 4 has excellent properties of fatigue resistance, bending moment resistance, shear resistance and corrosion resistance, and the bending unit 4 includes two bending sections 401 fixedly connected as one body, and the angle between the two bending sections 401 is ninety degrees.

[0039] Reference Figure 1 and Figure 2 Each floating unit includes a floating body 5 which is spliced ​​end to end in sequence. Each floating body 5 of the floating unit is connected by a steel strand. Specifically, the floating body 5 is made of UHPC ultra-high performance concrete. The cross section of the floating body 5 is annular, and the top and bottom surfaces of the connecting cylinder section are both flat. Both sides of the connecting cylinder section are curved to better bear the force and provide better stability when acting as a floating platform to bear the load of structures such as the wind turbine 30. The plane at the top of the connecting cylinder section facilitates more convenient placement and support of the structure, and the plane at the bottom of the connecting cylinder section facilitates better support and provides stable buoyancy.

[0040] Reference Figure 2 and Figure 3 A water storage cavity 6 is provided at the end of the floating member 5 along its length direction, and two vertically arranged connecting partitions 7 are fixedly installed in the water storage cavity 6. The two sides of the connecting partition 7 in the vertical direction are respectively fixedly connected to the two cavity walls of the water storage cavity 6. The two connecting partitions 7 are both arranged along the length direction of the extension member and are of the same length as the connecting cylinder section, so that the connecting partition 7 divides the water storage cavity 6 into three partition cavities 601. Specifically, the partition cavities 401 near the two sides of the floating member 5 are set as ballast cavities, and the partition cavity 401 near the middle of the floating member 5 can be set as a ballast cavity or a pedestrian cavity, which can be adaptively set according to actual needs. In the embodiment of the present application, the three partition cavities 401 are all set as ballast cavities.

[0041] Continue to refer to Figure 2 and Figure 3Each partition cavity 601 is provided with a water inlet 8 and a water outlet 9 connected to the outside. When the partition cavity 401 located in the middle of the floating body 5 is set as a human cavity, the human cavity does not have a water inlet 6 and a water outlet 7. Water is injected into different partition cavities 601 of the water storage cavity 6 by a pump to adjust the diving depth of the platform as a whole, so as to adapt to different installation conditions. At the same time, in the face of different weather conditions, different amounts of water are injected into different partition cavities 601 by a pump or water in different partition cavities 601 is discharged by a pump to adjust the inclination of the extension member, which is conducive to further ensuring the overall stability of the position of the floating platform.

[0042] Reference Figure 2 and Figure 4 In order to facilitate the isolation of the water inside and outside the connecting tube section, and thus ensure the overall stability of the floating body 5 after water storage, a sealing gasket 10 is fixedly sleeved and connected to the outer peripheral surface of one floating body 5 facing one end of the other floating body 5, and a partition 11 is fixedly arranged inside the sealing gasket 10. When the two floating bodies 5 are connected, the two floating bodies 5 are respectively pressed against the two sides of the partition 11, and the inner sides of the sealing gasket 10 are respectively pressed against the two floating bodies 5, so as to fully ensure the sealing stability between the two floating bodies 5 after the connection. The two bending sections 401 of the bending unit 4 are both fixedly provided with a stopper 12, and the stopper 12 closes the opening of one end of each partition cavity 601, so as to achieve stable separation of the partition cavities 601 of each floating unit.

[0043] Reference Figure 2 and Figure 3 In order to facilitate the stable connection between the bending unit 4 and each floating unit, the end of the floating member 5 of each floating unit close to the bending unit 4 is fixedly installed with a first flange 13 through an anchor plate 22 and a steel strand, and the end of the bending section 401 of the bending unit 4 close to the floating unit is fixedly installed with a second flange 14 by welding or bolts, and the first flange 13 and the second flange 14 are fixed by welding.

[0044] Reference Figure 2 A circle of first grooves 15 arranged in an annular shape is provided on the side of the first flange 13 facing the second flange 14, and a plurality of first reinforcing ribs 16 uniformly distributed in the circumferential direction are fixedly arranged in the first groove 15; a circle of second grooves 17 arranged in an annular shape is provided on the side of the second flange 14 facing the first flange 13, and a plurality of second reinforcing ribs 18 uniformly distributed in the circumferential direction are fixedly arranged in the second groove 17, so as to ensure the structural stability of the first flange 13 and the second flange 14.

[0045] Continue to refer to Figure 2A plurality of circumferentially distributed reinforcing ribs 19 are fixedly connected to the side of the second flange 14 away from the first flange 13, which is conducive to further ensuring the structural strength of the second flange 14. After the first flange 13 and the second flange 14 are welded and fixed, the first groove 15 is connected to the second groove 17, and grouting is performed in the first groove 15. In the embodiment of the present application, the grouting material can use UHPC ultra-high performance concrete. After the grouting solidifies, a grouting layer is formed in the first groove 15 and the second groove 17, which is conducive to further ensuring the connection stability between the first flange 13 and the second flange 14.

[0046] Reference Figure 2 and Figure 3 The floating body 5 and each connecting baffle 7 are provided with connecting holes 20 extending through the length direction thereof. The connecting holes 20 located at the connecting barrel section are evenly distributed in the circumferential direction, and the connecting holes 20 located at the connecting baffle 7 are evenly distributed along the length direction of the surface thereof. The bottom wall of the first groove 15 is provided with avoidance holes 21 extending through and corresponding to each connecting hole 20 one by one. Each connecting hole 20 and avoidance hole 21 are used for steel strands to pass through, so as to fully ensure the connection stability between each floating body 5 by setting multiple groups of steel strands.

[0047] Continue to refer to Figure 2 and Figure 3 Specifically, the anchor pad 22 at one end of each steel strand is located in the first groove 15, so as to realize hidden protection of the steel strand, so that the steel strand is not easily corroded by water, and the service life of the steel strand is guaranteed. Further, the anchor pad 22 includes a pad body 221 and a clamp 222. The pad body 221 is provided with a through hole 24 for the steel strand to pass through. In the embodiment of the present application, two through holes 24 are provided, and two clamps 222 are provided corresponding to the through holes 24.

[0048] Reference Figure 3 The clamp 222 includes two clamping parts 2221. The two clamping parts 2221 are opposite to each other and are concavely provided with a clamping groove 25 that matches the shape of the steel strand. The two clamping parts 2221 are provided with a limit spring 23 outside. The limit spring 23 is a ring-shaped arrangement that is closed from beginning to end. The limit spring 23 is sleeved on the outer circumference of the two clamping parts 2221. In order to ensure the position stability of the limit spring 23, the outer circumference of the two clamping parts 2221 is provided with a placement groove 26 for placing the limit spring 23. The two clamping parts 2221 realize the extrusion and positioning of the steel strand under the elastic force of the limit spring 23. The two clamping parts 2221 are both inserted into the through hole 24, and the cross-sectional dimensions of the two clamping parts 2221 gradually increase from the direction close to the through hole 24 opening to the direction away from the through hole 24 opening, so as to fully ensure the stability of the two clamping parts 2221 when extruding and positioning the steel strand.

[0049] Reference Figure 1The second float unit 2 and the third float unit 3 are both provided with end covers 27 at the ends of the float member 5 away from the first float unit 1. The connection method between the end cover 27 and the float member 5 is the same as the connection method between the float member 5 and the bending unit 4, and both are fixed by the first flange 13 and the second flange 14, which will not be repeated here. The setting of the end cover 27 is mainly used to achieve stable closure of the opening at the end of the connecting cylinder section.

[0050] Continue to refer to Figure 1 In the embodiment of the present application, three buoys are provided. Specifically, the buoy includes an installation cylinder 28 and a fixed cylinder 29, wherein the installation cylinder 28 is vertically fixedly installed on the top of the first floating unit 1 and is arranged near the middle of the length direction of the first floating unit 1. There are two fixed cylinders 29, and the two fixed cylinders 29 are respectively fixedly installed on the top of the second floating unit 2 and the third floating unit 3. The two fixed cylinders 29 are respectively arranged near the free ends of the second floating unit 2 and the third floating unit 3 away from the first floating unit 1, and the distances from the two fixed cylinders 29 to the installation cylinder 28 are equal. The installation cylinder 28 is used to install the fan 30. Specifically, the support part of the fan 30 is spliced ​​by multiple sections of support parts 31, and the two adjacent support parts 31 are fixed by flanges. The bottom support part 31 is doubly fixed to the installation cylinder 28 by flanges and steel strands.

[0051] Continue to refer to Figure 1 The connector includes a connecting beam 32 and a reinforcing rod 33, wherein both ends of the connecting beam 32 are fixedly installed on the two fixed cylinders 29, and two reinforcing rods 33 are provided. One end of the two reinforcing rods 33 is fixedly connected to the two fixed cylinders 29, and the other end is fixedly connected to the connecting beam 32, so as to fully ensure the connection stability between the two fixed cylinders 29, and at the same time facilitate towing the platform as a whole to move on the sea surface by pulling the connecting beam 32.

[0052] The implementation principle of Example 1 of the present application is: when the floating platform needs to be transported, since the first floating unit 1, the second floating unit 2 and the third floating unit 3 are all composed of multiple floating parts 5, each floating part 5 and the bending unit 4 are transported to the designated installation position in turn and then installed, without the need to transport the integrated floating platform structure as a whole, thereby making it easy to quickly transport the floating platform to the designated installation position for installation, and the individual sizes of each floating part 5 and the bending unit 4 are small, which facilitates the rapid production of each floating part 5 and the bending unit 4.

[0053] Example 2.

[0054] The main difference between the embodiment of the present application and the embodiment 1 is that the structure of the connecting body is different, and the ends of the floating body 5 of the second floating body unit 2 and the third floating body unit 3 away from the first floating body unit 1 are not provided with end covers 27.

[0055] Reference Figure 5 In the embodiment of the present application, the connector includes two bending members 34 and a connecting member 35, wherein the two bending members 34 have the same structure as the bending unit 4 and are both made of high-strength structural steel, and the bending member 34 also includes two bending sections 401 that are integrally fixedly connected. The connecting member 35 has the same structure as each floating unit, and includes a plurality of connecting members 351 that are spliced ​​end to end in sequence, and each connecting member 351 of the connecting member 35 is connected by a steel strand, and the connection method of each connecting member 351 of the connecting member 35 is the same as the connection method of each floating member 5 of a single floating unit, and both are fixed by a steel strand and a sealing pad 10, which will not be repeated here.

[0056] Continue to refer to Figure 5 The two ends of the connecting member 35 are respectively connected to one end of the bending section 401 of the two bending members 34, and the other end of the bending section 401 of the two bending members 34 is respectively connected to the second floating unit 2 and the third floating unit 3 at one end away from the first floating unit 1. The connection method between the connecting member 35 and the bending member 34, the connection method between the bending member 34 and one of the floating units, and the connection method between one of the floating units and the bending unit 4 are all the same, and are all connected and fixed by setting a first flange 13 and a second flange 14, which will not be repeated here.

[0057] The implementation principle of Example 2 of the present application is the same as that of Example 1, with the main difference being that, through the additional arrangement of two bending members 34 and a connecting member 35, the stress condition of the overall platform when bearing the structure is more uniform, making it easier to withstand more extreme loads and stresses in the marine environment, that is, to achieve a more stable bearing of the wind turbine 30.

[0058] The present application also discloses a construction method of a quadrilateral steel-concrete composite structure floating platform. The quadrilateral steel-concrete composite structure floating platform and its construction method include the following specific steps: S1, splicing the prefabricated floating parts 5 end to end in sequence and connecting them through steel strands to form a first floating unit 1, a second floating unit 2 and a third floating unit 3 respectively.

[0059] S2, the ends of the steel strands connecting the float parts 5 are fixed by the anchor plate 22 to ensure the overall stability of the first float unit 1, the second float unit 2 and the third float unit 3 after being spliced. Specifically, the anchor plate 22 after fixing the ends of the steel strands is located in the first groove 15 of the first flange 13.

[0060] S3, the two ends of the first float unit 1 are connected to the second float unit 2 and the third float unit 3 respectively through two bending units 4. Specifically, the bending unit 4 and the two float units are welded and fixed by the first flange 13 and the second flange 14. When the first flange 13 and the second flange 14 are welded and fixed, each connecting rib 19 is inserted into the first groove 15 and each connecting rib 19 is made to abut against the inner wall of the first groove 15 to ensure the stability of the relative position of the first flange 13 and the second flange 14.

[0061] S4, installing the connecting body between the second floating unit 2 and the third floating unit 3.

[0062] S5, installing the wind turbine 30 on the buoy located at the first floating unit 1 through steel strands and bolts.

[0063] The implementation principle of the construction method of a quadrilateral steel-concrete composite structure floating platform in the embodiment of the present application is as follows: since a plurality of floating parts 5 are spliced ​​in sequence to form a first floating unit 1, a second floating unit 2 and a third floating unit 3, each floating part 5 and a bending unit 4 are transported to a designated installation position in sequence and then assembled and constructed, without the need to transport the integrated floating platform structure as a whole, thereby making it easy to quickly transport the floating platform to the designated installation position for installation, and the individual sizes of each floating part 5 and the bending unit 4 are relatively small, which facilitates the rapid production of each floating part 5 and the bending unit 4.

[0064] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A quadrilateral steel-concrete composite floating platform, comprising a floating platform and a pontoon, characterized in that: The floating platform comprises a first floating unit (1), a second floating unit (2), a third floating unit (3) and a connector, wherein two ends of the first floating unit (1) are respectively connected to the second floating unit (2) and the third floating unit (3) through a bending unit (4); the connector is arranged in parallel with the first floating unit (1), and two ends of the connector are respectively connected to the second floating unit (2) and the third floating unit (3); the first floating unit (1), the second floating unit (2) and the third floating unit (3) are all formed by a plurality of floating parts (5) spliced ​​end to end in sequence, and two adjacent floating parts (5) are connected by a steel strand; a plurality of buoys are provided, and each of the buoys is arranged on the top of the floating platform.

2. A quadrilateral steel-concrete composite structure floating platform according to claim 1, characterized in that: A first flange (13) is fixedly mounted on the end of the floating member (5) close to the bending unit (4), and a second flange (14) is fixedly mounted on the end of the bending unit (4); the first flange (13) and the second flange (14) are fixed by welding.

3. A quadrilateral steel-concrete composite structure floating platform according to claim 2, characterized in that: The floating body (5) is provided with circumferentially distributed and through-going connection holes (20); the first flange (13) is provided with a first groove (15) arranged in an annular shape on one side facing the second flange (14); the first groove (15) is provided with avoidance holes (21) corresponding to the connection holes (20) and through-going; the connection holes (20) and the avoidance holes (21) are both used for steel strands to pass through; one end of the steel strand is fixed in the first groove (15) by an anchor plate (22).

4. The quadrilateral steel-concrete composite structure floating platform according to claim 3, characterized in that: A plurality of circumferentially distributed first reinforcing ribs (16) are arranged in the first groove (15); a circle of annularly arranged second grooves (17) are provided on a side of the second flange (14) facing the first flange (13); a plurality of circumferentially distributed second reinforcing ribs (18) are arranged in the second groove (17).

5. The quadrilateral steel-concrete composite structure floating platform according to claim 3, characterized in that: When the first flange (13) and the second flange (14) are welded and fixed, the first groove (15) and the second groove (17) are communicated and grouted.

6. The quadrilateral steel-concrete composite structure floating platform according to claim 1, characterized in that: The floating body (5) is provided with a water storage cavity (6) extending through it. Two connecting partitions (7) are fixedly installed in the water storage cavity (6). The two connecting partitions (7) are arranged along the length direction of the floating body (5) and divide the water storage cavity (6) into three partition cavities (601). At least two of the partition cavities (601) are provided with a water inlet hole (8) and a water outlet hole (9) communicating with the outside.

7. The quadrilateral steel-concrete composite structure floating platform according to claim 6, characterized in that: A sealing gasket (10) is fixedly arranged between two adjacent floating body parts (5) of the first floating body unit (1), the second floating body unit (2) and the third floating body unit (3).

8. The quadrilateral steel-concrete composite structure floating platform according to claim 1, characterized in that: The buoy comprises an installation cylinder (28) and a fixed cylinder (29), wherein the installation cylinder (28) is fixedly installed on the top of the first buoy unit (1) and is arranged near the middle of the length direction of the first buoy unit (1), and two fixed cylinders (29) are provided, and the two fixed cylinders (29) are respectively fixedly installed on the top of the second buoy unit (2) and the third buoy unit (3), and the distances between the two fixed cylinders (29) and the installation cylinder (28) are equal, and the installation cylinder (28) is used to install the fan (30); the connecting body comprises a connecting crossbeam (32) and a reinforcing rod (33), and the two ends of the connecting crossbeam (32) are respectively fixedly installed on the two fixed cylinders (29), and two reinforcing rods (33) are provided, and one end of the two reinforcing rods (33) is respectively fixedly connected to the two buoys, and the other end is fixedly connected to the connecting crossbeam (32).

9. The quadrilateral steel-concrete composite structure floating platform according to claim 1, characterized in that: The connecting body comprises two bending members (34) and a connecting member (35), the two ends of the connecting member (35) are respectively connected to the two bending members (34), the other ends of the two bending members (34) are respectively connected to one end of the second floating unit (2) and the third floating unit (3) away from the first floating unit (1), the connecting member (35) comprises a plurality of connecting pieces (351) spliced ​​end to end in sequence, and the connecting pieces (351) of the connecting member (35) are connected by steel strands.

10. A construction method for a quadrilateral steel-concrete composite structure floating platform, based on a quadrilateral steel-concrete composite structure floating platform according to any one of claims 1 to 9, characterized in that: The method comprises the following specific steps: S1, splicing the prefabricated floating body parts (5) end to end in sequence and connecting them via steel strands to form a first floating body unit (1), a second floating body unit (2) and a third floating body unit (3); S2, fixing the ends of the steel strands connecting the floating components (5) by means of an anchor pad (22) to ensure the overall stability of the first floating unit (1), the second floating unit (2) and the third floating unit (3) after being spliced; S3, respectively connecting the two ends of the first floating unit (1) with the second floating unit (2) and the third floating unit (3) through two bending units (4); S4, installing the connector between the second floating unit (2) and the third floating unit (3); S5, installing the fan (30) on the buoy located on the first floating unit (1) by means of steel strands and bolts.

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