Installation structure of a bottom-supported platform and method for installing the same

Abstract

The application relates to a mounting structure of a bottom-sitting platform and a mounting method thereof, and the mounting structure of the bottom-sitting platform comprises a platform body, the platform body is columnar, a platform base is arranged at the bottom of the platform body, the platform base extends outward along a direction perpendicular to the axis of the platform body, the platform base is used for contacting the sea bottom and supporting the platform body, the waterline surface of the platform body is a necked structure, a plurality of stability water tanks are detachably mounted on the upper part of the platform base, the plurality of stability water tanks are arranged in an array and are uniformly distributed with the central axis of the platform body as the center, the platform body, the platform base and the stability water tanks can be filled with water and drained through a ballast system, each stability water tank exerts a pressure on the platform base during the wet towing of the platform and the sinking and floating of the platform, so that the platform is suitable for being laid in various sea areas, the anti-sliding capacity of the platform is enhanced, the influence of the wind and wave load is reduced, the installation process is convenient and safe, and the bottom-sitting platform after installation is stable.

Description

TECHNICAL FIELD

[0001] The present application relates to the offshore platform technical field, especially a kind of installation structure of bottom-sitting platform and its installation method. BACKGROUND

[0002] Bottom-sitting platform is a kind of ocean platform, according to the different configuration and load equipment, can be used for long-term offshore construction support, tourism, emergency rescue, observation, communication and scientific research etc. Bottom-sitting platform is subjected to wind, wave, flow load for a long time when operating, and the stability of bottom-sitting platform is directly related to the safety of superstructure.

[0003] If the existing bottom-sitting platform adopts truss structure, its weight is too light, and the anti-sliding and anti-overturning ability greatly depends on positioning pile, which is difficult to be laid in sea area where positioning pile cannot be used. If non-truss solid structure is adopted, its waterline surface is too large, and it is also greatly affected by wind, wave and flow load, which has certain safety hidden danger. SUMMARY

[0004] The applicant provides an installation structure of bottom-sitting platform and its installation method to solve the above problems in the prior art, so that the platform can be laid in various sea areas, the anti-sliding ability of the platform is enhanced, the influence of wind and wave load is reduced, the installation process is convenient and safe, and the installed bottom-sitting platform is stable.

[0005] The technical scheme adopted by the present application is as follows:

[0006] An installation structure of bottom-sitting platform, comprising a platform main body, the platform main body is columnar, a platform base is arranged at the bottom of the platform main body, the platform base extends outward along the direction perpendicular to the axis of the platform main body, and the platform base is used to contact the seabed and support the platform main body;

[0007] The waterline surface of the platform main body is a necked structure;

[0008] A plurality of stability water tanks are detachably installed on the upper part of the platform base, and the plurality of stability water tanks are arranged in an array around the central axis of the platform main body.

[0009] The platform main body, platform base and stability water tank can be filled with water and drained by a ballast system, and each stability water tank exerts pressure on the platform base during wet towing and platform sinking and floating.

[0010] Further technical scheme is as follows:

[0011] The horizontal cross section of the platform main body is concentric circular in the whole height range, and the cross section radius gradually decreases from the top of the platform main body downward, reaches the minimum value at the waterline surface, and then gradually increases downward.

[0012] The platform base upper part is provided with a plurality of slideways corresponding to the stability water tank, the sliding direction of each slideway is diverged outward from the center of the platform body, one end of each slideway is located on the platform base outside the platform body and is provided with a baffle, and the other end of each slideway is located on the platform base outer edge;

[0013] The lower part of the stability water tank is slidably connected with the slideway;

[0014] The connecting piece is used to keep the baffle in contact with the stability water tank and keep the position of the stability water tank unchanged relative to the platform base.

[0015] The platform body above the waterline is provided with a winch cabin, the winch cabin is provided with a winch, the connecting piece is a mooring cable, one end of the connecting piece is connected with the winch, and the other end of the connecting piece is detachably connected with the lifting lug on the stability water tank.

[0016] The structure of a single slideway comprises a side stopper in inverted L-shaped cross section symmetrically arranged on the upper surface of the platform base, the length direction of the side stopper is consistent with the sliding direction of the slideway, the upper part of the side stopper is a limiting plate arranged horizontally, and the lower part of the side stopper is connected with the platform base;

[0017] The stability water tank is provided with a groove with an opening outward on both sides of the bottom, the cross section of the groove is rectangular, and the length direction of the groove is consistent with the horizontal direction;

[0018] The side stopper is matched with the groove and the side surface of the stability water tank below the groove;

[0019] The upper groove surface of the groove is matched with the upper surface of the limiting plate, and the lower groove surface of the groove is matched with the lower surface of the limiting plate;

[0020] The vertical height of the groove is greater than the thickness of the limiting plate.

[0021] The distance between the two side stoppers at the outer edge of the platform base is greater than the distance between the two side stoppers at the inner side of the platform base.

[0022] The pressure sensor is arranged between the bottom of the stability water tank and the platform base.

[0023] The structure of the platform base comprises a plurality of base blocks extending outward, the plurality of base blocks form a multi-claw, and each base block corresponds to a single stability water tank.

[0024] A method for installing a bottom-supported platform, comprising the following steps:

[0025] S1: the assembled platform body and platform base overall structure is detachably connected with the plurality of stability water tanks and keeps the plurality of stability water tanks at equal and fixed distances relative to the center of the platform body, and the platform body, platform base and stability water tanks are placed on the sea;

[0026] S2: water is injected into the platform body, platform base and stability water tanks through the ballast system, so that the platform body, platform base and stability water tanks sink as a whole, the sea surface is below the waterline of the platform body, according to the attitude of the platform under the current sea conditions, the attitude of the platform is adjusted by adjusting the pressure of the single stability water tank on the platform base, so that the axis of the platform body remains vertical, and the pressure sensor has a pressure value output;

[0027] S3: after step S2 is completed, the platform body and platform base are transported to the destination sea area by wet towing;

[0028] S4: continue to inject water into the platform body, platform base and stability water tanks through the ballast system, during the water injection process, according to the attitude of the platform under the current sea conditions, the attitude of the platform is adjusted by adjusting the pressure of the single stability water tank on the platform base, so that the axis of the platform body remains vertical, and the pressure sensor has a pressure value output, so that the platform base sinks and sits on the bottom, and the sea level is at the waterline after sitting on the bottom;

[0029] S5: the water in the stability water tank is discharged outward through the ballast system, when the pressure value of the pressure sensor approaches zero, the cooperation between the stability water tank and the platform base is released, and the installation of the platform is completed at this time.

[0030] Further technical solutions thereof are:

[0031] When the bottom-sitting platform is installed, the following steps are included:

[0032] S6: the stability water tank is transported to the platform operation site by a transport ship;

[0033] S7: water is injected into the stability water tank through the ballast system, so that the stability water tank sinks, the bottom of the stability water tank is detachably connected with the platform base, and the plurality of stability water tanks are kept at equal and fixed distances relative to the center of the platform body;

[0034] S8: the platform body, platform base and stability water tanks are drained together through the ballast system, during the water draining process, according to the attitude of the platform under the current sea conditions, the attitude of the platform is adjusted by adjusting the pressure of the single stability water tank on the platform base, so that the axis of the platform body remains vertical, and the pressure sensor has a pressure value output, so that the waterline of the platform body is above the sea level after the platform body floats;

[0035] S9: after step S8 is completed, the platform body and platform base are transported to the next sea area by wet towing.

[0036] The beneficial effects of the present application are as follows:

[0037] The present application has the advantages that: the structure is compact and reasonable, and the operation is convenient; the platform with a direct bottom-sitting structure is suitable for hard seabed and ordinary seabed; the platform base is arranged at the bottom of the platform body to enhance the anti-sliding capacity of the platform; the necked structure is designed at the waterline surface of the platform body to reduce the influence of the wind wave load; the pressure of the plurality of stability water tanks on the platform base is changed by adjusting the ballast to correct the attitude during the installation of the platform, so that the installation process is convenient and safe, and the installed bottom-sitting platform is stable.

[0038] Meanwhile, the present application also has the following advantages:

[0039] (1) The platform body with a slender structure in the middle part is arranged at the waterline surface, so that the wave climbing is inhibited, the seawater corrosion height is reduced, and the waterline is enlarged upward to facilitate the arrangement of more equipment.

[0040] (2) The stability water tank and the platform base are connected in the form of a slide combined with a mooring cable, so that the construction is more convenient, and a large floating crane is not needed to assist, thereby reducing the construction cost.

[0041] (3) The height of the vertical direction of the groove is greater than the thickness of the limiting plate, on the one hand, the stability water tank is more smooth when sliding on the slide, and the manufacturing and installation precision of the side stop piece is reduced, and on the other hand, when the gravity of the stability water tank is greater than the buoyancy, the upper surface of the stability water tank and the platform base is uniformly contacted, and the uniformity of the pressure applied by the stability water tank to the platform base is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 It is a structural schematic view (front view) of the present application.

[0043] Figure 2 It is a structural schematic view (side view) of the present application.

[0044] Figure 3 It is a connection structure schematic view of the stability water tank and the platform body of the present application.

[0045] Figure 4 It is a structural schematic view (top view) of the present application.

[0046] Figure 5 It is a waterline surface effect schematic view of the platform body of the present application.

[0047] Figure 6 It is a sliding connection structure schematic view of the stability water tank and the platform base of the present application.

[0048] Figure 7 It is a cooperation structure schematic view of the side stop piece and the groove of the present application.

[0049] Figure 8 This is a schematic diagram illustrating the variation in the spacing between the side stops of the present invention.

[0050] Figure 9 This is a schematic diagram (front view) of the structure of the stable water tank of the present invention.

[0051] Figure 10 This is a schematic diagram (side view) of the structure of the stable water tank of the present invention.

[0052] Figure 11 This is a diagram (S1) showing the installation process of the mounting platform of the present invention.

[0053] Figure 12 This is a diagram (S2) showing the installation process of the mounting platform of the present invention.

[0054] Figure 13 This is a diagram (S4) showing the installation process of the mounting platform of the present invention.

[0055] Figure 14 This is a diagram (S5) showing the installation process of the mounting platform of the present invention.

[0056] Figure 15 This invention describes the process of severing the connection between the stable water tank and the platform base. Figure 1 .

[0057] Figure 16 This invention describes the process of severing the connection between the stable water tank and the platform base. Figure 2 .

[0058] Figure 17 This invention describes the process of severing the connection between the stable water tank and the platform base. Figure 3 .

[0059] The components are: 1. Platform body; 2. Platform base; 21. Base block; 3. Stable water tank; 31. Groove; 4. Slide rail; 41. Side baffle; 411. Limiting plate; 5. Baffle; 6. Connecting piece; 7. Winch cabin; 8. Lifting lug; S. Waterline surface. Detailed Implementation

[0060] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0061] Example 1:

[0062] like Figures 1-4As shown, the installation structure of the platform in this embodiment includes a platform body 1, which is columnar. A platform base 2 is provided at the bottom of the platform body 1. The platform base 2 extends outward along a direction perpendicular to the axis of the platform body 1. The platform base 2 is used to contact the seabed and support the platform body 1. By providing the outwardly extending platform base 2 at the bottom of the platform body 1, the friction area between the bottom of the platform body 1 and the seabed is increased, thereby enhancing the anti-slip performance of the platform body 1. The upper part of the platform body 1 is used for arranging equipment and other purposes.

[0063] The platform body 1 has a necking structure at the waterline S. Specifically, the necking structure makes the cross-sectional dimension of the platform body 1 at the waterline S smaller than the cross-sectional dimension of the platform body 1 below the waterline S, with a smooth transition. The dimension of the platform body 1 above the waterline S can be the same as, larger than, or smaller than the cross-sectional dimension at the waterline S. Reducing the size of the platform body 1 at the waterline S can significantly reduce wave forces, contributing to structural safety and minimizing the wind, wave, and current forces acting on the platform.

[0064] Multiple stable water tanks 3 are detachably installed on the upper part of the platform base 2. The multiple stable water tanks 3 are evenly distributed in an array with the central axis of the platform body 1 as the center.

[0065] The platform body 1, platform base 2, and stabilizing water tank 3 can all be filled with water and drained through the ballast system. During the wet towing of the platform and the sinking and floating of the platform, each stabilizing water tank 3 applies pressure to the platform base 2.

[0066] Both the platform body 1 and the platform base 2 are equipped with multiple ballast tanks, and the stabilizing water tank 3 has a hollow structure. It should be noted that the ballast systems of the platform body 1 and the platform base 2 are sufficient to support their sinking or floating. The stabilizing water tank 3 mainly serves to increase the waterline level, thereby increasing stability, and does not need to provide buoyancy for the platform.

[0067] Specifically, the platform consists only of the platform body 1 and the platform base 2 during operation. When installing or removing the platform, the stabilizing water tank 3 is detachably connected to the platform base 2. After installation, the stabilizing water tank 3 is removed. The stabilizing water tank 3 increases the platform's waterline area, enhancing stability during wet towing and platform buoyancy. Furthermore, since sea conditions are generally stable during construction, with fixed current and wind directions, the platform's attitude is adjusted by regulating the pressure of each stabilizing water tank 3 on the platform base 2 during wet towing and platform buoyancy. This ensures the platform body 1's axis remains vertical, guaranteeing stability and safety during wet towing and buoyancy. It also ensures the platform base 2 maintains uniform contact with the seabed during platform settling, improving installation efficiency and making the platform more stable after settling. Attitude sensors, such as gyroscopes, are typically installed on the platform. It should be noted that "keeping the platform body 1's axis vertical" does not necessarily mean it is perfectly vertical; slight deviation from the plumb line is permissible.

[0068] By adopting a direct-bottom-seat structure, the platform is suitable for both hard and ordinary seabeds. By setting a platform base 2 at the bottom of the main body 1, the platform's anti-slip capability is enhanced. The waterline surface S of the main body of the platform is designed with a necking structure to reduce the impact of wind and wave loads. By adjusting the ballast to change the pressure of multiple stable water tanks on the platform base 2, the posture of the platform during installation is corrected, ensuring convenient and safe installation, while also ensuring the stability of the bottom-seat platform after installation.

[0069] Furthermore, such as Figure 1 , Figure 5 As shown, the horizontal cross-section of the platform body 1 is a concentric circle throughout the entire height range, and the radius of the cross-section gradually decreases from the top of the platform body 1 downwards, reaching a minimum value at the waterline S and then gradually increasing downwards.

[0070] By designing a slender platform body 1 with a central section located at the waterline (S), wave rise can be suppressed, reducing seawater corrosion. Simultaneously, the increased volume upwards from the waterline allows for the placement of more equipment. The upper part of the large platform body 1 can be used for helicopter docking, resupply, and maintenance; helicopters can dock directly on top of the platform body 1 without an additional helicopter deck. The large internal space of the platform body 1 allows for various functions, including long-term offshore construction support, tourism, emergency rescue, observation, communication, and scientific research, depending on the equipment carried.

[0071] like Figure 5 As shown, the platform body 1 is impacted by oncoming waves. The waves rise upwards behind the platform body at the waterline S. Because the arc of the platform body 1 above the waterline S changes outwards, it suppresses the rise of the waves.

[0072] Furthermore, such as Figures 1-6As shown, the upper part of the platform base 2 is provided with a plurality of chutes 4 corresponding to the stability water tank 3 one by one, the sliding direction of each chute 4 is diverged outward from the center of the platform body 1, one end of each chute 4 is located on the platform base 2 outside the platform body 1 and is matched with the baffle 5, and the other end of each chute 4 is located on the outer edge of the platform base 2; the lower part of the stability water tank 3 is in sliding cooperation with the chute 4; further comprising a connecting piece 6, the connecting piece 6 is used to keep the baffle 5 in contact with the stability water tank 3 and keep the position of the stability water tank 3 unchanged relative to the platform base 2. The end of the chute 4 is provided with the baffle 5, which is used to prevent the movement of the stability water tank 3 to the center of the platform base 2, so as to protect the platform body 1, and also serves as a positioning structure when the stability water tank 3 is installed; the connecting piece 6 is used in combination with the baffle 5 to fix the position of the stability water tank 3, and the connecting piece 6 can be a component connected to the platform body 1 and the stability water tank 3, or a component connected to the stability water tank 3 and the platform base 2.

[0073] The structure of the stability water tank 3 connected with the platform base 2 through the chute 4 is convenient for the detachable installation of the stability water tank 3 and the platform base 2.

[0074] When the installation of the bottom sitting platform is removed, the stability water tank 3 needs to be installed, the stability water tank 3 is filled with water through the ballast system and the balance between the gravity and the buoyancy of the stability water tank 3 is adjusted, then the stability water tank 3 is slid from the outer edge of the platform base 2 matched with the chute 4, so that the stability water tank 3 is in contact with the baffle 5, and the position of the stability water tank 3 is fixed through the connecting piece 6.

[0075] When the platform sits on the bottom during the installation of the bottom sitting platform, the installation of the stability water tank 3 is removed, the stability water tank 3 is drained outward through the ballast system and the balance between the gravity and the buoyancy of the stability water tank 3 is adjusted, then the fixing of the stability water tank 3 by the connecting piece 6 is removed, the stability water tank 3 is slid along the chute 4 to the outer edge of the platform base 2, and the stability water tank 3 is separated from the chute 4.

[0076] Further, as shown, Figures 1-4 the platform body 1 above the waterline S is provided with a winch cabin 7, the winch cabin 7 is provided with a winch, the connecting piece 6 is a mooring cable, one end of the connecting piece 6 is connected with the winch, and the other end of the connecting piece 6 is detachably connected with the lifting lug 8 on the stability water tank 3.

[0077] The structure of the connecting piece 6 fixing the stability water tank 3 is specifically provided above the waterline S, and is a mooring cable operated by the winch, on the one hand, the mooring cable is tightened through the winch, which is convenient for the fixation of the stability water tank 3, and on the other hand, it is also convenient for providing power when the stability water tank 3 slides from the outer edge of the platform base 2 to the platform body 1.

[0078] The connection between the stability water tank 3 and the platform base 2 is designed as a fixed form of chute combined with mooring cable, which makes the construction more convenient, without the need for large floating cranes to assist, thereby reducing the construction cost.

[0079] Further, as shown in Figure 7 , Figure 9 , Figure 10 , the structure of the single slide 4 is: including the side stop 41 symmetrically arranged on the upper surface of the platform base 2, the length direction of the side stop 41 is consistent with the sliding direction of the slide 4, the upper part of the side stop 41 is the limiting plate 411 arranged horizontally, and the lower part of the side stop 41 is connected with the platform base 2.

[0080] The two sides of the bottom of the stability water tank 3 are provided with the groove 31 opening outward, the cross section of the groove 31 is rectangular, and the length direction of the groove 31 is consistent with the horizontal direction. The stability water tank 3 is box-shaped, and only two grooves 31 are dug in the lower part and are symmetrically arranged on the left and right sides.

[0081] The side stop 41 cooperates with the groove 31 and the side surface of the stability water tank 3 at the lower part of the groove 31.

[0082] Specifically, the groove 31 is used for embedding the slide 4 to prevent the movement of the stability water tank 3 to the two sides, so that the stability water tank 3 can be fixed more firmly.

[0083] The upper groove surface of the groove 31 cooperates with the upper surface of the limiting plate 411, and the lower groove surface of the groove 31 cooperates with the lower surface of the limiting plate 411; the vertical height H of the groove 31 is greater than the thickness D of the limiting plate 411.

[0084] Specifically, when the side stop 41 cooperates with the groove 31, the limiting plate 411 can float up and down in the groove 31, on the one hand, the stability water tank 3 can slide more smoothly on the slide 4, and the manufacturing and installation precision of the side stop 41 is reduced, on the other hand, it is ensured that the stability water tank 3 is in uniform contact with the upper surface of the platform base 2 when the gravity of the stability water tank 3 is greater than the buoyancy, and the uniformity of the pressure applied by the stability water tank 3 to the platform base 2 is ensured.

[0085] Further, as shown in Figure 8 , the interval of the two side stops 41 at the outer edge of the platform base 2 is greater than the interval of the two side stops 41 at the inner side of the platform base 2.

[0086] Specifically, the interval of the two side stops 41 at the outer edge of the platform base 2 is greater than the interval of the two side stops 41 at the inner side of the platform base 2, so that the slide 4 at the outer edge of the platform base 2 is in the shape of a trumpet mouth, and the stability water tank 3 is facilitated to slide in and play a guiding role.

[0087] Embodiment two:

[0088] On the basis of embodiment one, a pressure sensor is arranged between the bottom of the stability water tank 3 and the platform base 2.

[0089] Specifically, the pressure sensor is used to detect the pressure of the stability water tank 3 on the platform base 2. The pressure sensor is in the form of a pressure box sensor that displays a numerical value when subjected to pressure and displays a numerical value of zero when not subjected to pressure. The pressure sensor can be installed at the bottom of the stability water tank 3, or it can be installed on the platform base 2 at a fixed position of the stability water tank 3 and electrically connected to the ballast system of the stability water tank 3 for monitoring the pressure.

[0090] Embodiment three:

[0091] Based on embodiment one, as shown in Figure 4 , the structure of the platform base 2 includes a plurality of base blocks 21 extending outward, and the plurality of base blocks 21 form a multi-claw shape, and each base block 21 corresponds to a single stability water tank 3.

[0092] Specifically, the number of base blocks 21 can be three, as shown in Figure 4 , the platform base 2 is in the form of a three-claw type, and each claw is provided with a slide 4, and the bottom of the stability water tank 3 is in the form of a slide 4 to complete the installation and disengagement of the water tank.

[0093] Embodiment four:

[0094] As shown in Figures 11-17 , the installation method of the bottom-sitting platform based on embodiment two includes the following steps:

[0095] S1: The assembled platform body 1 and platform base 2 are integrally connected with a plurality of stability water tanks 3, and the distance between the plurality of stability water tanks 3 relative to the center of the platform body 1 is equal and fixed, and the platform body 1, platform base 2 and stability water tank 3 are placed on the sea.

[0096] S2: Water is injected into the platform body 1, platform base 2 and stability water tank 3 through the ballast system, so that the platform body 1, platform base 2 and stability water tank 3 sink as a whole, and the sea surface is below the waterline S of the platform body 1, according to the attitude of the platform under the current sea conditions, the pressure of the single stability water tank 3 on the platform base 2 is adjusted to adjust the attitude of the platform, so that the axis of the platform body 1 remains vertical, and at the same time ensures that the pressure sensor has a pressure value.

[0097] Specifically, after the platform body 1, the platform base 2 and the stability water tank 3 as a whole sink in step S2, the lower part of the stability water tank 3 is immersed in seawater, the water plane area of the platform as a whole is increased, and the stability is enhanced; the pressure sensor detects that each stability water tank 3 exerts pressure on the platform base 2, so that the stability is ensured and the monitoring of the ballast system is facilitated; the pressure of the stability water tank 3 on the platform 2 is adjusted during the water injection process of the ballast system, so that the position of the center of gravity of the platform including the stability water tank 3 is adjusted, the platform as a whole balances the force from the wind or the sea current, the axis of the platform body 1 is kept in a vertical state, the center of gravity of the platform is lowered along the axis of the platform body 1, the ability of the platform to resist waves during wet towing is enhanced, and the stability of the platform posture is ensured.

[0098] S3: After step S2 is completed, the platform body 1 and the platform base 2 are transported to the destination sea area by wet towing.

[0099] S4: The platform body 1, the platform base 2 and the stability water tank 3 continue to be injected with water by the ballast system, and during the water injection process, the posture of the platform under the current sea conditions is adjusted by adjusting the pressure of the single stability water tank 3 on the platform base 2, so that the posture of the platform is adjusted, the axis of the platform body 1 is kept in a vertical state, and the pressure sensor has a pressure value, so that the platform base 2 sinks and sits on the bottom, and after sitting on the bottom, the sea level is located at the water plane S.

[0100] Specifically, in step S4, the pressure sensor detects that each stability water tank 3 exerts pressure on the platform base 2, so that the stability is ensured and the monitoring of the ballast system is facilitated; the pressure of the stability water tank 3 on the platform 2 is adjusted during the water injection process of the ballast system, so that the position of the center of gravity of the platform including the stability water tank 3 is adjusted, the platform as a whole balances the force from the wind or the sea current, the axis of the platform body 1 is kept in a vertical state, the stability of the platform posture is ensured, and the platform base 2 can be in uniform contact with the seabed during the platform sitting process, so that the installation efficiency is improved and the platform after sitting on the bottom is more stable, on the other hand, in combination with the stability water tank 3 which increases the water plane area of the platform as a whole, the platform is prevented from overturning during sinking, and the safety of the platform during sinking is improved.

[0101] During the water injection process, the stability water tank 3 exerts pressure on the platform base 2, which can be ensured by the fact that the water injection speed of the stability water tank 3 is relatively fast compared with the water injection speed of the platform body 1 and the platform base 2, and at the same time, the stability water tank 3 can be prevented from being subjected to excessive tension on the structure of the slide 4 due to buoyancy, thereby being damaged.

[0102] S5: The water in the stability water tank 3 is discharged outward by the ballast system, and when the pressure value of the pressure sensor approaches zero, the cooperation between the stability water tank 3 and the platform base 2 is released, at which time the platform installation is completed.

[0103] As Figures 13-17As shown, the detachable structure of the stability water tank 3 and the platform base 2 is that the stability water tank 3 is slidably connected with the platform base 2 through the slide 4. In addition to the installation process of the stability water tank 3, the stability water tank 3 is drained outward by the ballast system, and the gravity and buoyancy of the stability water tank 3 are balanced. Then, the construction personnel take a boat, release the connecting member 6, i.e. the mooring cable, fixed on the lifting lug 8, and use the winch to recover. After the connecting member 6 is released to fix the stability water tank 3, the stability water tank 3 is pulled by the tugboat to slide along the slide 4 to the outer edge of the platform base 2, and is separated from the slide 4.

[0104] Example five:

[0105] The installation method of the bottom-supported platform, including the installation method of the bottom-supported platform, includes the following steps:

[0106] S6: The stability water tank 3 is transported to the platform operation site by the transport ship.

[0107] S7: Water is injected into the stability water tank 3 by the ballast system to make the stability water tank 3 sink, and the bottom of the stability water tank 3 is detachably connected with the platform base 2 and keeps the distance between the plurality of stability water tanks 3 and the center of the platform body 1 equal and fixed.

[0108] Specifically, in step S7, when the stability water tank 3 is installed, water is injected into the stability water tank 3 by the ballast system and the gravity and buoyancy of the stability water tank 3 are balanced. After that, the stability water tank 3 is slid to cooperate with the slide 4 from the outer edge of the platform base 2, so that the stability water tank 3 contacts the baffle 5, and the position of the stability water tank 3 is fixed by the connecting member 6.

[0109] S8: The platform body 1, the platform base 2 and the stability water tank 3 are drained by the ballast system. During the drainage process, according to the attitude of the platform under the current sea conditions, the attitude of the platform is adjusted by adjusting the pressure of the single stability water tank 3 on the platform base 2, so that the axis of the platform body 1 remains vertical, and at the same time, the pressure sensor has a pressure value, so that the waterline surface S of the platform body 1 is located above the sea level after the platform body 1 floats up;

[0110] Specifically, in step S8, the pressure sensor detects that each stability water tank 3 exerts pressure on the platform base 2, which ensures stability and facilitates monitoring of the ballast system. During the drainage process by the ballast system, the pressure of the stability water tank 3 on the platform 2 is adjusted, and then the position of the center of gravity of the platform including the stability water tank 3 is adjusted to balance the force from the wind or the sea current, so that the axis of the platform body 1 remains vertical, which ensures the stability of the platform attitude. During the floating process of the platform, the stability water tank 3 increases the overall waterline surface area of the platform, prevents the platform from overturning during the floating process, and improves the safety of the platform during the installation process.

[0111] The stability water tank 3 generates pressure on the platform base 2 during the drainage process. The drainage speed of the stability water tank 3 is relatively slow compared with the water injection speed of the platform body 1 and the platform base 2, so as to ensure that the stability water tank 3 is not subjected to excessive tension on the slide 4 due to the buoyancy, thereby avoiding damage.

[0112] S9: After step S8 is completed, the platform body 1 and the platform base 2 are transported to the next sea area by wet towing.

[0113] The installation method of the bottom-supported platform in examples four and five adjusts the pressure of the single stability water tank 3 on the platform base 2 during the wet towing of the platform and the sinking and floating of the platform, adjusts the posture of the platform, keeps the axis of the platform body 1 vertical during the installation process, ensures the convenience and safety of the platform during the installation process, and ensures the stability of the installed bottom-supported platform.

[0114] The above description is an explanation of the present application, not a limitation of the present application. The scope of the present application is defined in the claims. Within the protection scope of the present application, any form of modification can be made.

Claims

1. An installation structure for a base platform, characterized in that: The platform includes a main body (1), which is columnar. A platform base (2) is provided at the bottom of the main body (1). The platform base (2) extends outward along a direction perpendicular to the axis of the main body (1). The platform base (2) is used to contact the seabed and support the main body (1). The waterline surface (S) of the main body of the platform (1) has a necked structure; The platform base (2) is detachably equipped with multiple stable water tanks (3), which are evenly distributed in an array around the central axis of the platform body (1). The platform body (1), platform base (2) and stabilizing water tank (3) can all be filled with water and drained through the ballast system. During the wet towing of the platform and the sinking and floating of the platform, each stabilizing water tank (3) applies pressure to the platform base (2). The platform base (2) is equipped with multiple slides (4) that correspond one-to-one with the stable water tank (3). The sliding direction of each slide (4) is outward from the center of the platform body (1). One end of each slide (4) is located on the platform base (2) outside the platform body (1) and is equipped with a baffle (5). The other end of each slide (4) is located on the outer edge of the platform base (2). The lower part of the stable water tank (3) is in sliding fit with the slide (4); It also includes a connector (6) for keeping the baffle (5) in contact with the stable water tank (3) and keeping the position of the stable water tank (3) relative to the platform base (2) unchanged.

2. The installation structure of the base platform as described in claim 1, characterized in that: The horizontal cross-section of the platform body (1) is a concentric circle throughout the entire height range, and the cross-sectional radius gradually decreases from the top of the platform body (1) downwards, reaches its minimum value at the waterline (S), and then continues to gradually increase downwards.

3. The installation structure of the base platform as described in claim 1, characterized in that: A winch cabin (7) is provided on the platform body (1) above the waterline (S). A winch is provided inside the winch cabin (7). The connector (6) is a mooring cable. One end of the connector (6) is connected to the winch, and the other end of the connector (6) is detachably connected to the lifting lug (8) on the stable water tank (3).

4. The installation structure of the base platform as described in claim 1, characterized in that: The structure of a single slide (4) is as follows: it includes a side baffle (41) with an inverted L-shaped cross section symmetrically arranged on the upper surface of the platform base (2). The length direction of the side baffle (41) is consistent with the sliding direction of the slide (4). The upper part of the side baffle (41) is a horizontally arranged limiting plate (411), and the lower part of the side baffle (41) is connected to the platform base (2). The stable water tank (3) has grooves (31) with openings facing outwards on both sides of its bottom. The cross-section of the grooves (31) is rectangular, and the length direction of the grooves (31) is consistent with the horizontal direction. The side baffle (41) cooperates with the groove (31) and the side of the stable water tank (3) at the bottom of the groove (31); The upper groove surface of the groove (31) is engaged with the upper surface of the limiting plate (411), and the lower groove surface of the groove (31) is engaged with the lower surface of the limiting plate (411). The vertical height (H) of the groove (31) is greater than the thickness (D) of the limiting plate (411).

5. The installation structure of the base platform as described in claim 4, characterized in that: The distance between the two side stops (41) at the outer edge of the platform base (2) is greater than the distance between the two side stops (41) on the inner side of the platform base (2).

6. The mounting structure of the base platform as described in any one of claims 1-5, characterized in that: A pressure sensor is provided between the bottom of the stable water tank (3) and the platform base (2).

7. The mounting structure of the base platform as described in any one of claims 1-5, characterized in that: The structure of the platform base (2) includes multiple outwardly extending base blocks (21), which form a multi-claw shape, with each base block (21) corresponding to a single stable water tank (3).

8. A method for installing a base platform using the mounting structure of the base platform as described in claim 6, characterized in that: Includes the following steps: S1: The assembled platform body (1) and platform base (2) are detachably connected to multiple stable water tanks (3) and the distance between the multiple stable water tanks (3) and the center of the platform body (1) is equal and fixed. The platform body (1), platform base (2) and stable water tanks (3) are placed at sea as a whole. S2: Water is injected into the platform body (1), platform base (2) and stabilizing water tank (3) through the ballast system, so that the platform body (1), platform base (2) and stabilizing water tank (3) sink as a whole. The sea surface is below the waterline (S) of the platform body (1). According to the attitude of the platform under the current sea conditions, the attitude of the platform is adjusted by adjusting the pressure of a single stabilizing water tank (3) on the platform base (2) to keep the axis of the platform body (1) vertical, while ensuring that the pressure sensor has a pressure value output. S3: After step S2 is completed, the platform body (1) and platform base (2) are transported to the destination sea area by wet towing; S4: Continue to fill the platform body (1), platform base (2) and stability tank (3) with water through the ballast system. During the water filling process, adjust the platform attitude by adjusting the pressure of a single stability tank (3) on the platform base (2) according to the current sea state, so that the axis of the platform body (1) remains vertical. At the same time, ensure that the pressure sensor has a pressure value output, so that the platform base (2) sinks and sits on the bottom. After sitting on the bottom, the sea level is located at the waterline (S). S5: The water in the stabilizing water tank (3) is discharged outward through the ballast system. When the pressure value of the pressure sensor approaches zero, the connection between the stabilizing water tank (3) and the platform base (2) is released. At this time, the platform installation is completed.

9. A method for installing a platform according to claim 8, characterized in that: When removing the mounting platform, Includes the following steps: S6: Use a transport ship to transport the stability tank (3) to the platform operation site; S7: Water is injected into the stable water tank (3) through the ballast system to make the stable water tank (3) sink, and the bottom of the stable water tank (3) is detachably connected to the platform base (2) and the distance between the multiple stable water tanks (3) and the center of the platform body (1) is equal and fixed. S8: The platform body (1), platform base (2) and stabilizing tank (3) are drained together by the ballast system. During the drainage process, the attitude of the platform is adjusted by adjusting the pressure of a single stabilizing tank (3) on the platform base (2) according to the current sea state. This keeps the axis of the platform body (1) vertical and ensures that the pressure sensor outputs a pressure value so that the waterline (S) of the platform body (1) is above the sea level after it floats up. S9: After step S8 is completed, the platform body (1) and platform base (2) are transported to the next sea area by wet towing.

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