An underwater oil storage tank foundation structure

Abstract

An underwater oil storage tank foundation structure, as an infrastructure for large or extra-large underwater oil storage tanks, mainly includes main pile columns, side pile columns, main pile frames, side pile frames, corner pile frames, stabilizing frames, main board frames, side board frames, anti-settlement plates, and bottom plates. The main pile columns and side pile columns are the foundation structures inserted into the seabed. Based on them, the main pile frames, side pile frames, and corner pile frames with designed skirt plate structures are inserted into the seabed, and there are plate structures as load-bearing structures. There are stabilizing frames, main board frames, and side board frames connecting the main pile frames, side pile frames, and corner pile frames together, providing partial load-bearing capacity and enhancing the stability of the overall device. The present invention is arranged near the port and offshore. The main structure is located below the seabed, increasing the port's crude oil receiving capacity and storage capacity without affecting ship navigation.

Description

Technical Field

[0001] The present invention relates to an underwater oil storage tank foundation structure, specifically a foundation structure arranged on the seabed for placing an underwater oil storage tank. Background Art

[0002] Underwater oil storage technology has been applied abroad to some extent, mainly as a temporary oil storage facility for offshore oil fields. It is arranged on the seabed, and generally, the freshly produced crude oil is stored therein and awaits loading and unloading by oil tankers.

[0003] In China, oil storage facilities are generally directly arranged at ports with crude oil receiving capabilities, and the crude oil unloaded from oil tankers is directly stored in the areas where the ports are located.

[0004] The proportion of China's crude oil imports is relatively high, but the crude oil storage volume is relatively small. Once crude oil imports are interrupted, the crude oil stored in China can only meet the country's short-term demand. On the other hand, the crude oil receiving capacity of China's ports is limited, and there have been situations where oil tankers have queued outside the ports for a long time and been unable to enter the ports when China imports a large amount of crude oil.

[0005] Arranging underwater oil storage facilities near the coast of ports is an effective solution to the above problems. On the one hand, it increases the oil unloading channels for oil tankers, allowing oil tankers to directly unload crude oil into the underwater oil storage facilities without entering the port, enhancing the crude oil receiving capacity of the ports; on the other hand, it does not require occupying the port land area to add oil storage tanks, improving the crude oil storage capacity. Summary of the Invention

[0006] To meet the requirements of the offshore arrangement of underwater oil storage tanks, the present invention proposes an underwater oil storage tank foundation structure, which serves as the infrastructure for arranging the oil storage tank on the seabed, provides support for the oil storage tank, is suitable for the underwater arrangement of large or extra-large oil storage tanks, and at the same time, the arrangement of the underwater oil storage tank does not affect the navigation of ships in this sea area.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: To ensure that the installation of a large oil storage tank on the seabed does not affect ship navigation, the underwater oil storage tank foundation structure and part of the oil storage tank structure of the present invention are located below the seabed. It is necessary to first carry out seabed construction, dig a pit of a certain size, and then arrange a pile foundation. On the pile foundation, a foundation structure with a sinking prevention plate and a skirt plate is installed. The foundation structure is partially embedded in the sea sand and is connected to each other to ensure the structural strength. Finally, the oil storage tank is installed on the foundation structure.

[0008] The beneficial effects of the present invention are: The foundation structure meets the requirements of the underwater arrangement of large or extra-large oil storage tanks, realizes large-scale underwater crude oil storage without affecting ship navigation, and improves the crude oil receiving capacity and storage capacity of ports. Brief Description of the Drawings

[0009] Figure 1 It is a schematic diagram of the final effect of the present invention.

[0010] Figure 2 Schematic diagram of the main pile column of the present invention.

[0011] Figure 3 Schematic diagram of the side pile column of the present invention.

[0012] Figure 4 Schematic diagram of the main pile frame of the present invention.

[0013] Figure 5 Schematic diagram of the cross-section of the main pile frame of the present invention.

[0014] Figure 6 Schematic diagram of the side pile frame of the present invention.

[0015] Figure 7 Schematic diagram of the cross-section of the side pile frame of the present invention.

[0016] Figure 8 Schematic diagram of the corner pile frame of the present invention.

[0017] Figure 9 Schematic diagram of the cross-section of the corner pile frame of the present invention.

[0018] Figure 10 Schematic diagram of the stabilizing frame of the present invention.

[0019] Figure 11 、 12 Schematic diagram of the main board frame of the present invention.

[0020] Figure 13 、 14 Schematic diagram of the side board frame of the present invention.

[0021] Figure 15 、 16 Schematic diagram of the anti-settlement plate of the present invention.

[0022] Figure 17 Installation step 1 of the present invention.

[0023] Figure 18 Installation step 2 of the present invention.

[0024] Figure 19 Installation step 3 of the present invention.

[0025] Figure 20 Installation step 4 of the present invention.

[0026] Among them, 1. Main pile column, 1-1. Stabilizer fixing section, 1-2. Main pile frame fixing section, 1-3. Main pile column base section, 1-4. Main pile leg, 1-5. Main pile plate, 2. Side pile column, 2-1. Stabilizer leg fixing section, 2-2. Secondary pile frame fixing section, 2-3. Side pile column base section, 2-4. Side pile leg, 2-5. Side pile plate, 3. Main pile frame, 3-1. Stabilizing cylinder, 3-2. Base, 3-3. Main pile frame side frame, 3-4. Main pile frame connecting frame, 3-5. Main pile frame side frame reinforcement plate, 3-6. Main stabilizer connecting screw hole, 3-7. Main board frame connecting screw hole, 3-8. Main pile frame anti-settlement plate, 3-9. Main pile frame skirt plate, 3-10. Main board frame connecting rod, 4. Side pile frame, 4-1. Side pile frame stabilizing cylinder, 4-2. Side pile frame base, 4-3. Side pile frame side frame, 4-4. Side pile frame connecting frame, 4-5. Side pile frame side frame reinforcement plate, 4-6. Side stabilizer connecting screw hole, 4-7. Side pile frame main board frame connecting screw hole, 4-8. Side pile frame anti-settlement plate, 4-9. Side pile frame skirt plate, 4-10. Side pile frame main board frame connecting rod, 4-11. Side pile frame slope frame, 4-12. Side pile frame slope plate, 4-13. Side pile frame slope plate skirt plate, 5. Corner pile frame, 5-1. Corner pile frame stabilizing cylinder, 5-2. Corner pile frame base, 5-3. Corner pile frame side frame, 5-4. Corner pile frame connecting frame, 5-5. Corner pile frame side frame reinforcement plate, 5-7. Corner pile frame side board frame connecting screw hole, 5-8. Corner pile frame anti-settlement plate, 5-9. Corner pile frame skirt plate, 5-10. Corner pile frame side board frame connecting rod, 5-11. Corner pile frame slope frame, 5-12. Corner pile frame slope plate, 5-13. Corner pile frame slope plate skirt plate, 6. Stabilizer, 6-1. Main pile frame connecting section, 6-2. Cantilever, 6-3. Cantilever support leg, 6-4. Cantilever fixed foot, 6-5. Side pile frame fixing section, 6-6. Main pile frame connecting screw hole, 6-7. Side pile frame connecting screw hole, 7. Main board frame, 7-1. Main board frame framework, 7-2. Main board frame connecting end, 7-3. Main board frame anti-settlement plate, 7-4. Main board frame skirt plate, 7-5. Connecting rod groove, 8. Side board frame, 8-1. Side board frame framework, 8-2. Side board frame connecting end, 8-3. Side board frame anti-settlement plate, 8-4. Side board frame skirt plate, 8-5. Side board frame connecting rod groove, 9. Anti-settlement plate, 9-1. Anti-settlement circular plate, 9-2. Anti-settlement plate skirt plate, 10. Bottom plate, 11. Oil storage tank, 12. Seabed. Detailed implementation mode

[0027] Figure 2As shown in the figure, the uppermost and smallest-diameter stabilizing frame fixing section 1-1 of the main pile column 1 is followed by the main pile frame fixing section 1-2 with a slightly larger diameter below it, and in the middle is the main pile column base section 1-3. All of them are cylindrical structures. There is a frustum structure at the upper part of the main pile column base section 1-3, which is connected to the main pile frame fixing section 1-2. The main pile leg 1-4 is composed of a cylindrical structure and a frustum structure, and there are triangular main pile plates 1-5 on the outside of the frustum structure. During use, the part below the main pile column base section 1-3 is inserted into the sea sand, and the main pile plates 1-5 mainly play a role in enhancing stability.

[0028] consisting of Figure 3 As shown in the figure, the side pile column 2 includes a stabilizing frame leg fixing section 2-1, a secondary pile frame fixing section 2-2, a side pile column base section 2-3, a side pile leg 2-4, and a side pile plate 2-5. Its shape is similar to that of the main pile column 1, but the dimensions of each part are different. During use, the part below the side pile column base section 2-3 is inserted into the sea sand, and the function of the side pile plate 2-5 is the same as that of the main pile plate 1-5, which is to enhance the stability of the side pile column 2.

[0029] consisting of Figure 2 、 4 As shown in Figures 5, at the center position of the bottom of the main pile frame 3 is the base 3-2, whose inner diameter is the same as the outer diameter of the main pile column base section 1-3. The upper part is the stabilizing cylinder 3-1, whose inner diameter is the same as the outer diameter of the main pile frame fixing section 1-2. The angle at the connection position between the base 3-2 and the stabilizing cylinder 3-1 is adapted to the frustum structure at the upper part of the main pile column base section 1-3. Surrounding the outside of the base 3-2 and the stabilizing cylinder 3-1 are four main pile frame side frames 3-3. The upper part of each is triangular and the lower part is rectangular, which are composed of steel columns and steel plates. There are main stabilizing frame connection screw holes 3-6 at the upper part of the steel columns between the main pile frame side frames 3-3 and the stabilizing cylinder 3-1, and there are four threaded holes in total. There are main pile frame side frame reinforcing plates 3-5 connecting and fixing between adjacent two main pile frame side frames 3-3, and the main pile frame side frame reinforcing plates 3-5 are connected to the stabilizing cylinder 3-1. Outside the main pile frame side frames 3-3 is the main pile frame connecting frame 3-4, which is composed of two steel plates. There are main board frame connection screw holes 3-7 at the upper part, and there are two rows of ten threaded holes in total. The above structure is located on the main pile frame anti-settlement plate 3-8. The main pile frame anti-settlement plate 3-8 is a square plate structure with through holes, and the four corners are cut into large-radius arcs. There are triangular reinforcing ribs on the main pile frame anti-settlement plate 3-8, which are connected to the main pile frame side frames 3-3 and the main pile frame connecting frame 3-4 to enhance stability. Below the main pile frame anti-settlement plate 3-8 is the main pile frame skirt plate 3-9, which is composed of multiple rows of steel plates. There are main board frame connecting rods 3-10 in the middle of the four sides of the main pile frame anti-settlement plate 3-8. The main board frame connecting rods 3-10 are triangular pyramid structures, and the upper part of the structure is cut off.

[0030] Figure 3 、 6As shown in FIGS. 6 and 7, the bottom of the side pile frame 4 is the side pile frame base 4-2, the inner diameter of which is the same as the outer diameter of the side pile column base section 2-3, and the upper part is the side pile frame stabilizing cylinder 4-1, the inner diameter of which is the same as the outer diameter of the secondary pile frame fixed section 2-2. The angle at the connection position between the side pile frame base 4-2 and the side pile frame stabilizing cylinder 4-1 is adapted to the frustum structure at the upper part of the side pile column base section 2-3. Surrounding the outside of the side pile frame base 4-2 and the side pile frame stabilizing cylinder 4-1 are 3 side pile frame side frames 4-3 and a side pile frame slope frame 4-11. The side pile frame side frame 4-3 includes 3 triangular structures, which are composed of steel columns and steel plates. At the upper part of the steel columns between the side pile frame side frame 4-3 and the side pile frame stabilizing cylinder 4-1, and between the side pile frame slope frame 4-11 and the side pile frame stabilizing cylinder 4-1, there are side stabilizing frame connection screw holes 4-6, which are 4 threaded holes. There are side pile frame side frame reinforcing plates 4-5 connecting and fixing between two adjacent side pile frame side frames 4-3 and between the side pile frame side frame 4-3 and the side pile frame slope frame 4-11, and the side pile frame side frame reinforcing plates 4-5 are connected to the side pile frame stabilizing cylinder 4-1. The outside of the side pile frame side frame 4-3 is the side pile frame connecting frame 4-4, which is composed of two steel plates. At the upper part, there are side pile frame main board frame connection screw holes 4-7, which are two rows of 10 threaded holes in total. The above structure is located above the side pile frame anti-settlement plate 4-8. The side pile frame anti-settlement plate 4-8 is a square plate structure with through holes, and the four corners are cut into large-radius arcs. There are triangular reinforcing ribs on the side pile frame anti-settlement plate 4-8 connecting to the side pile frame side frame 4-3 and the side pile frame connecting frame 4-4 to enhance stability. Below the side pile frame anti-settlement plate 4-8 is the side pile frame skirt plate 4-9, which is multiple rows of steel plates. Except for one side of the side pile frame slope frame 4-11, in the middle of the other three sides of the side pile frame anti-settlement plate 4-8, there are side pile frame main board frame connecting rods 4-10, which are triangular pyramid structures with the upper part of the structure cut off. One side of the side pile frame slope frame 4-11 is connected to two side pile frame side frames 4-3, the side pile frame base 4-2 and the side pile frame stabilizing cylinder 4-1, and the other side is connected to the side pile frame slope plate 4-12. The side pile frame slope plate 4-12 is a rectangular plate structure with through holes, and there is a side pile frame slope plate skirt plate 4-13 at the lower side. The side pile frame slope plate skirt plate 4-13 is a rectangular plate structure with two chamfers.

[0031] consisting of Figure 3 , 8As shown in Figures 9, the bottom of the corner pile frame 5 is the corner pile frame base 5-2, whose inner diameter is the same as the outer diameter of the side pile column base section 2-3, and the upper part is the corner pile frame stabilizing cylinder 5-1, whose inner diameter is the same as the outer diameter of the secondary pile frame fixed section 2-2. The angle at the connection position between the corner pile frame base 5-2 and the corner pile frame stabilizing cylinder 5-1 is adapted to the frustum structure at the upper part of the side pile column base section 2-3. Surrounding the outside of the corner pile frame base 5-2 and the corner pile frame stabilizing cylinder 5-1 are two corner pile frame side frames 5-3 and the corner pile frame slope frame 5-11. The corner pile frame side frame 5-3 includes three triangular structures, which are composed of steel columns and steel plates. There are corner pile frame side frame reinforcement plates 5-5 connecting and fixing between two adjacent corner pile frame side frames 5-3, between two adjacent corner pile frame slope frames 5-11, and between the corner pile frame side frame 5-3 and the corner pile frame slope frame 5-11. The corner pile frame side frame reinforcement plate 5-5 is connected to the corner pile frame stabilizing cylinder 5-1. The outside of the corner pile frame side frame 5-3 is the corner pile frame connecting frame 5-4, which is composed of two steel plates. There are corner pile frame side plate frame connection screw holes 5-7 at the upper part, which are two rows of a total of 10 threaded holes. The above structure is located above the corner pile frame anti-settlement plate 5-8. The corner pile frame anti-settlement plate 5-8 is a square plate structure with through holes, and one corner is cut into a large-radius arc. There are triangular reinforcing ribs on the corner pile frame anti-settlement plate 5-8 connecting to the corner pile frame side frame 5-3 and the corner pile frame connecting frame 5-4 to enhance stability. Below the corner pile frame anti-settlement plate 5-8 is the corner pile frame skirt plate 5-9, which is multiple rows of steel plates. On both sides of the corner pile frame anti-settlement plate 5-8 except for both sides of the corner pile frame slope frame 5-11, there are corner pile frame side plate frame connecting rods 5-10, which are triangular pyramid structures with the upper part of the structure cut off. One side of the corner pile frame slope frame 5-11 is connected to the corner pile frame side frame 5-3, the corner pile frame base 5-2, and the corner pile frame stabilizing cylinder 5-1, and the other side is connected to the corner pile frame slope plate 5-12. The corner pile frame slope plate 5-12 is a rectangular plate structure with through holes, and there is a corner pile frame slope plate skirt plate 5-13 at the lower side. The corner pile frame slope plate skirt plate 5-13 is a rectangular plate structure with two chamfers.

[0032] As shown in Figure 10 Figures, the central position of the stabilizing frame 6 is the main pile frame connection section 6-1, which is a cylindrical structure. Its outer diameter is the same as the inner diameter of the stabilizing cylinder 3-1, and its inner diameter is the same as the outer diameter of the stabilizing frame fixed section 1-1; its upper part is hemispherical, and the lower part is grooved to reduce the structural weight. Surrounding the main pile frame connection section 6-1 are four cantilevers 6-2, which are grooved on them to reduce the influence of ocean current disturbance. The outer end of the cantilever 6-2 is the side pile frame fixed section 6-5, which is a cylindrical structure. Its outer diameter is the same as the inner diameter of the side pile frame stabilizing cylinder 4-1, and its inner diameter is the same as the stabilizing frame leg fixed section 2-1. There are main pile frame connection screw holes 6-6 and side pile frame connection screw holes 6-7 at the connection positions of both ends of the cantilever 6-2 with the main pile frame connection section 6-1 and the side pile frame fixed section 6-5, which respectively correspond to the main stabilizing frame connection screw holes 3-6 and the side stabilizing frame connection screw holes 4-6. Below the cantilever 6-2 is the cantilever support leg 6-3, and its lower part is connected to the cantilever fixed foot 6-4. The cantilever fixed foot 6-4 is a plate structure with screw holes, and its screw holes correspond to the main board frame connection screw holes 3-7.

[0033] As shown in Figure 11 and 12 , the main body of the main board frame 7 is the main board frame framework 7-1, which is composed of triangular steel columns and steel plates. The two ends of the main board frame framework 7-1 are the main board frame connection ends 7-2, on which there are screw holes corresponding to the main board frame connection screw holes 3-7. The lower side is the main board frame anti-settlement plate 7-3, which is a plate structure with through holes, and the two side edges are cut into arcs, and the arc radian is the same as that on the main pile frame anti-settlement plate 3-8, the side pile frame anti-settlement plate 4-8, and the corner pile frame anti-settlement plate 5-8. The lower side of the main board frame anti-settlement plate 7-3 is the main board frame skirt plate 7-4, which is multiple rows of steel plates. There are triangular stiffeners at the connection position between the main board frame anti-settlement plate 7-3 and the main board frame framework 7-1. At the bottom of the main board frame anti-settlement plate 7-3 corresponding to both sides of the main board frame framework 7-1, there are connecting rod grooves 7-5, and their shape and structure are adapted to the main board frame connecting rod 3-10 and the side pile frame main board frame connecting rod 4-10.

[0034] As shown in Figure 13 and 14 , the main body of the side board frame 8 is the side board frame framework 8-1, which is composed of a triangular steel column framework and steel plates. The two ends of the side board frame framework 8-1 are the side board frame connection ends 8-2, on which there are screw holes corresponding to the side pile frame main board frame connection screw holes 4-7 and the corner pile frame side board frame connection screw holes 5-7. The lower side is the side board frame anti-settlement plate 8-3, which is a plate structure with through holes, and one side edge is cut into an arc, and the arc radian is the same as that on the main pile frame anti-settlement plate 3-8, the side pile frame anti-settlement plate 4-8, and the corner pile frame anti-settlement plate 5-8. The lower side of the side board frame anti-settlement plate 8-3 is the side board frame skirt plate 8-4, which is multiple rows of steel plates. There are triangular stiffeners at the connection position between the side board frame anti-settlement plate 8-3 and the side board frame framework 8-1. At the bottom of the side board frame anti-settlement plate 8-3 corresponding to both sides of the side board frame framework 8-1, there are side board frame connecting rod grooves 8-5, and their shape and structure are adapted to the side pile frame main board frame connecting rod 4-10 and the corner pile frame side board frame connecting rod 5-10.

[0035] As shown in Figure 15 and 16 , the anti-settlement plate 9 includes an anti-settlement circular plate 9-1 with a circular plate structure with through holes, and below it is the anti-settlement plate skirt 9-2, which is a multi-row plate structure.

[0036] As shown in Figure 2 and 3 and 17, the underwater oil storage tank foundation structure is installed below the seabed. First, underwater operations are required. A large deep pit is dug on the seabed 12, and then according to the position requirements, 1 main pile column 1 and 8 side pile columns 2 are inserted into the bottom of the pit. The part below the main pile column base section 1-3 of the main pile column 1 and the part below the side pile column base section 2-3 of the side pile column 2 are inserted into the seabed sand at the bottom of the pit.

[0037] As shown in Figure 4 and Figure 4 、​​​​​​​​​​​​​​​​6 As shown in Figures 8 and 18, install the main pile frame 3, side pile frame 4 and corner pile frame 5 according to the positions of the main pile column 1 and side pile column 2. The base 3-2 is sleeved on the position of the base section 1-3 of the main pile column, and the side pile frame base 4-2 is sleeved on the position of the base section 2-3 of the side pile column. The parts below the anti-settlement plates 3-8 of the main pile frame, 4-8 of the side pile frame and 5-8 of the corner pile frame are inserted into the sea sand; the slope plate skirt 4-13 of the side pile frame and the slope plate skirt 5-13 of the corner pile frame are inserted into the sea sand of the pit wall, and the slope frames 4-11 of the side pile frame and 5-11 of the corner pile frame are attached to the pit wall.

[0038] From Figure 4 、 6 As shown in Figures 8, 12, 14, 16 and 19, install the main board frame 7, side board frame 8 and anti-settlement plate 9. The connection ends 7-2 of the main board frame are respectively clamped at the positions of the connection screw holes 3-7 of the main board frame and the connection screw holes 4-7 of the side pile frame main board frame, and the corresponding screw holes are aligned. At the same time, the connecting rods 3-10 of the main board frame and the connecting rods 4-10 of the side pile frame main board frame are clamped in the connecting rod grooves 7-5. The connection ends 8-2 of the side board frame are respectively clamped at the positions of the connection screw holes 4-7 of the side pile frame main board frame and the connection screw holes 5-7 of the corner pile frame side board frame, and the corresponding screw holes are aligned. At the same time, the connecting rods 4-10 of the side pile frame main board frame and the connecting rods 5-10 of the corner pile frame side board frame are clamped in the side board frame connecting rod grooves 8-5. The parts below the anti-settlement plates 7-3 of the main board frame, 8-3 of the side board frame and the anti-settlement circular plate 9-1 are inserted into the sea sand. The main board frame 7 and the side board frame 8 are connected through the connecting rod grooves 7-5 and the side board frame connecting rod grooves 8-5 with the connecting rods 3-10 of the main board frame, the connecting rods 4-10 of the side pile frame main board frame and the connecting rods 5-10 of the corner pile frame side board frame to determine their positions and play a role in force transmission when a certain component is stressed. After the above installation is completed, weld the joint parts between the anti-settlement plates 3-8 of the main pile frame, 4-8 of the side pile frame, 5-8 of the corner pile frame and the anti-settlement circular plate 9-1 together.

[0039] From Figure 1 、 4As shown in 6, 10, 11, and 20, the stabilizing frame 6 and the bottom plate 10 are installed. The main pile frame connecting section 6-1 is inserted into the stabilizing cylinder 3-1 and sleeved on the stabilizing frame fixing section 1-1. At the same time, the main pile frame connecting screw hole 6-6 is located at the position of the main stabilizing frame connecting screw hole 3-6, and the screw holes correspond to each other and are locked with screws; the side pile frame fixing section 6-5 is inserted into the side pile frame stabilizing cylinder 4-1 and sleeved on the stabilizing frame leg fixing section 2-1. At the same time, the side pile frame connecting screw hole 6-7 is located at the position of the side stabilizing frame connecting screw hole 4-6, and the screw holes correspond to each other and are locked with screws. The cantilever fixing foot 6-4 is sleeved on the main board frame connecting end 7-2. The screw holes correspond to each other. Screws are used to pass through the cantilever fixing foot 6-4, the main board frame connecting end 7-2, the main board frame connecting screw hole 3-7 or the side pile frame main board frame connecting screw hole 4-7 to lock the stabilizing frame 6, the main board frame 7, the main pile frame 3 and the side pile frame 4 together. Then the bottom plate 10 is installed. The bottom plate 10 is a rectangular steel plate, and its main function is to evenly transfer the pressure of the oil storage tank to the foundation structure. Finally, the oil storage tank 11 is installed.

[0040] The final installation effect of the present invention is as Figure 1 shown. The skirt plate structure is inserted into the sea sand to ensure the stability of the device. The anti-settlement plate structure that fits the sea sand ensures the bearing capacity of the overall structure. The through holes on the anti-settlement plate structure are used for seawater circulation during the installation process to ensure that the anti-settlement plate structure fits together with the sea sand.

Claims

1. An underwater oil storage tank foundation structure, characterized in that, It includes a main pile column (1), side pile columns (2), a main pile frame (3), side pile frames (4), corner pile frames (5), a stabilizing frame (6), a main board frame (7), side board frames (8), a sinking prevention plate (9), and a bottom plate (10); the number of the side pile columns (2) is 8; the 8 side pile columns (2) are arranged in a "nine-character grid" position with the main pile column (1); the numbers of the side pile frames (4) and the corner pile frames (5) are both 4; 4 main board frames (7) are connected around the main pile frame (3), and the other ends of the main board frames (7) are connected to 4 side pile frames (4); the side pile frames (4) and the corner pile frames (5) are connected by side board frames (8); the center position of the stabilizing frame (6) is connected to the main pile frame (3) and is also connected to the main board frames (7) and the side pile frames (4); the sinking prevention plate (9) is installed in the circular space enclosed by the main pile frame (3), the main board frames (7), the corner pile frames (5), and the side board frames (8). The bottom plate (10) is a rectangular steel plate and is located under the oil storage tank (11). The main pile column (1) includes a stabilizing frame fixing section (1-1), a main pile frame fixing section (1-2), a main pile column base section (1-3), a main pile leg (1-4), and a main pile plate (1-5); the diameters of the stabilizing frame fixing section (1-1), the main pile frame fixing section (1-2), and the main pile column base section (1-3) increase in sequence, and the main pile leg (1-4) is composed of a cylindrical structure and a frustum structure. The upper part of the main pile column (1) is the stabilizing frame fixing section (1-1) with the smallest diameter, below the stabilizing frame fixing section (1-1) is the main pile frame fixing section (1-2) with a slightly larger diameter, the middle of the main pile column (1) is the main pile column base section (1-3), the stabilizing frame fixing section (1-1), the main pile frame fixing section (1-2), and the main pile column base section (1-3) are all cylindrical structures, and there is a frustum structure at the upper part of the main pile column base section (1-3) connected to the main pile frame fixing section (1-2); there is a triangular main pile plate (1-5) outside the frustum structure of the main pile leg (1-4).

2. The basic structure of an underwater oil storage tank according to claim 1, characterized in that, The side pile columns (2) have the same shape as the main pile column (1); the side pile columns (2) include a stabilizing frame leg fixing section (2-1), a secondary pile frame fixing section (2-2), a side pile column base section (2-3), a side pile leg (2-4), and a side pile plate (2-5); the stabilizing frame leg fixing section (2-1), the secondary pile frame fixing section (2-2), the side pile column base section (2-3), and the side pile leg (2-4) are connected in sequence from top to bottom. The upper part of the side pile column (2) is the stabilizing frame leg fixing section (2-1) with the smallest diameter, below the stabilizing frame leg fixing section (2-1) is the secondary pile frame fixing section (2-2) with a slightly larger diameter, the middle of the side pile column (2) is the side pile column base section (2-3), and the upper part of the side pile column base section (2-3) is connected to the secondary pile frame fixing section (2-2); there is a side pile plate (2-5) outside the side pile leg (2-4).

3. The underwater oil storage tank foundation structure according to claim 2, characterized in that, The main pile frame (3) includes a stabilizing cylinder (3-1), a base (3-2), a main pile frame side frame (3-3), a main pile frame connecting frame (3-4), a main pile frame side frame reinforcement plate (3-5), a main stabilizing frame connecting screw hole (3-6), a main board frame connecting screw hole (3-7), a main pile frame anti-settlement plate (3-8), a main pile frame skirt plate (3-9), and a main board frame connecting rod (3-10). The center position at the bottom of the main pile frame (3) is the base (3-2). The inner diameter of the base (3-2) is the same as the outer diameter of the main pile column base section (1-3). The upper part of the main pile frame (3) is the stabilizing cylinder (3-1). The inner diameter of the stabilizing cylinder (3-1) is the same as the outer diameter of the main pile frame fixed section (1-2). The angle at the connection position between the base (3-2) and the stabilizing cylinder (3-1) is adapted to the frustum structure at the upper part of the main pile column base section (1-3). Surrounding the outside of the base (3-2) and the stabilizing cylinder (3-1) are the main pile frame side frames (3-3), and the number is 4. The upper part of the main pile frame side frame (3-3) is triangular, and the lower part is rectangular. The main pile frame side frame (3-3) is composed of steel columns and steel plates. There are main stabilizing frame connecting screw holes (3-6) at the upper part of the steel columns between the main pile frame side frame (3-3) and the stabilizing cylinder (3-1), and the main stabilizing frame connecting screw holes (3-6) are 4 threaded holes. There is a main pile frame side frame reinforcement plate (3-5) connecting and fixing between adjacent two main pile frame side frames (3-3), and the main pile frame side frame reinforcement plate (3-5) is connected to the stabilizing cylinder (3-1). The outside of the main pile frame side frame (3-3) is the main pile frame connecting frame (3-4). There are main board frame connecting screw holes (3-7) at the upper part of the main pile frame connecting frame (3-4), and the main board frame connecting screw holes (3-7) are two rows of 10 threaded holes in total. The lower part of the main pile frame connecting frame (3-4) is composed of two steel plates. The lower part of the steel plates is connected to the main pile frame anti-settlement plate (3-8). The main pile frame anti-settlement plate (3-8) is a square plate structure with through holes. There are triangular reinforcing ribs on the main pile frame anti-settlement plate (3-8) connected to the main pile frame side frame (3-3) and the main pile frame connecting frame (3-4). Below the main pile frame anti-settlement plate (3-8) is the main pile frame skirt plate (3-9), and the main pile frame skirt plate (3-9) is multiple rows of steel plates. There are main board frame connecting rods (3-10) in the middle of the four sides of the main pile frame anti-settlement plate (3-8), and the main board frame connecting rods (3-10) are triangular pyramid structures.

4. The underwater oil storage tank foundation structure according to claim 3, characterized in that, The side pile frame (4) includes a side pile frame stabilizing cylinder (4-1), a side pile frame base (4-2), a side pile frame side frame (4-3), a side pile frame connecting frame (4-4), a side pile frame side frame reinforcement plate (4-5), a side stabilizing frame connecting screw hole (4-6), a side pile frame main board frame connecting screw hole (4-7), a side pile frame anti-settlement plate (4-8), a side pile frame skirt plate (4-9), a side pile frame main board frame connecting rod (4-10), a side pile frame slope frame (4-11), and a side pile frame slope plate (4-12). The bottom of the side pile frame (4) is the side pile frame base (4-2), and the inner diameter of the side pile frame base (4-2) is the same as the outer diameter of the side pile column base section (2-3); the upper part of the side pile frame (4) is the side pile frame stabilizing cylinder (4-1), and the inner diameter of the side pile frame stabilizing cylinder (4-1) is the same as the outer diameter of the secondary pile frame fixed section (2-2); the angle at the connection position between the side pile frame base (4-2) and the side pile frame stabilizing cylinder (4-1) is adapted to the frustum structure at the upper part of the side pile column base section (2-3); surrounding the outside of the side pile frame base (4-2) and the side pile frame stabilizing cylinder (4-1) are 3 side pile frame side frames (4-3) and a side pile frame slope frame (4-11); the side pile frame side frame (4-3) includes 3 triangular structures, composed of steel columns and steel plates; there are side stabilizing frame connection screw holes (4-6) at the upper parts of the steel columns between the side pile frame side frame (4-3) and the side pile frame stabilizing cylinder (4-1), and at the upper parts of the steel columns between the side pile frame slope frame (4-11) and the side pile frame stabilizing cylinder (4-1); there are side pile frame side frame reinforcing plates (4-5) connecting and fixing between two adjacent side pile frame side frames (4-3) and between the side pile frame side frame (4-3) and the side pile frame slope frame (4-11), and the side pile frame side frame reinforcing plate (4-5) is connected to the side pile frame stabilizing cylinder (4-1); the outside of the side pile frame side frame (4-3) is the side pile frame connection frame (4-4); the side pile frame connection frame (4-4) is composed of two steel plates, and there is a side pile frame main board frame connection screw hole (4-7) at the upper part of the side pile frame connection frame (4-4); there are triangular reinforcing ribs on the side pile frame anti-settlement plate (4-8) connecting to the side pile frame side frame (4-3) and the side pile frame connection frame (4-4); below the side pile frame anti-settlement plate (4-8) is the side pile frame skirt plate (4-9); there are side pile frame main board frame connecting rods (4-10) in the middle of the other three sides of the side pile frame anti-settlement plate (4-8) except for the side of the side pile frame slope frame (4-11); one side of the side pile frame slope frame (4-11) is connected to two side pile frame side frames (4-3), the side pile frame base (4-2) and the side pile frame stabilizing cylinder (4-1), and the other side is connected to the side pile frame slope plate (4-12), and the side pile frame slope plate (4-12) is a rectangular plate structure with through holes, and there is a side pile frame slope plate skirt plate (4-13) at the lower side.

5. The basic structure of an underwater oil storage tank according to claim 4, characterized in that, The corner pile frame (5) includes a corner pile frame stabilizing cylinder (5-1), a corner pile frame base (5-2), a corner pile frame side frame (5-3), a corner pile frame connection frame (5-4), a corner pile frame side frame reinforcing plate (5-5), a corner pile frame side board frame connection screw hole (5-7), a corner pile frame anti-settlement plate (5-8), a corner pile frame skirt plate (5-9), a corner pile frame side board frame connecting rod (5-10), a corner pile frame slope frame (5-11), a corner pile frame slope plate (5-12), a corner pile frame slope plate skirt plate (5-13); the number of the corner pile frame side frames (5-3) is 2; the number of the corner pile frame slope frames (5-11), the corner pile frame slope plates (5-12), and the corner pile frame slope plate skirt plates (5-13) is 2; The bottom of the corner pile frame (5) is the corner pile frame base (5-2), and the inner diameter of the corner pile frame base (5-2) is the same as the outer diameter of the side pile column base section (2-3); the upper part of the corner pile frame (5) is the corner pile frame stabilizing cylinder (5-1), and the inner diameter of the corner pile frame stabilizing cylinder (5-1) is the same as the outer diameter of the secondary pile frame fixed section (2-2); the angle at the connection position between the corner pile frame base (5-2) and the corner pile frame stabilizing cylinder (5-1) is adapted to the frustum structure at the upper part of the side pile column base section (2-3); surrounding the outside of the corner pile frame base (5-2) and the corner pile frame stabilizing cylinder (5-1) are two corner pile frame side frames (5-3) and the corner pile frame slope frame (5-11); the corner pile frame side frame (5-3) includes three triangular structures, which are composed of steel columns and steel plates; there are corner pile frame side frame reinforcement plates (5-5) connecting and fixing between two adjacent corner pile frame side frames (5-3), between two adjacent corner pile frame slope frames (5-11), and between the corner pile frame side frame (5-3) and the corner pile frame slope frame (5-11), and the corner pile frame side frame reinforcement plate (5-5) is connected to the corner pile frame stabilizing cylinder (5-1); outside the corner pile frame side frame (5-3) is the corner pile frame connecting frame (5-4), the corner pile frame connecting frame (5-4) is composed of two steel plates, and there are corner pile frame side plate frame connection screw holes (5-7) at the upper part of the corner pile frame connecting frame (5-4); there are triangular stiffeners on the corner pile frame anti-settlement plate (5-8) connecting to the corner pile frame side frame (5-3) and the corner pile frame connecting frame (5-4); below the corner pile frame anti-settlement plate (5-8) is the corner pile frame skirt plate (5-9); the corner pile frame anti-settlement plate (5-8) is provided with corner pile frame side plate frame connecting rods (5-10) on the other two sides except for both sides of the corner pile frame slope frame (5-11); one side of the corner pile frame slope frame (5-11) is connected to the corner pile frame side frame (5-3), the corner pile frame base (5-2) and the corner pile frame stabilizing cylinder (5-1), and the other side is connected to the corner pile frame slope plate (5-12); there is a corner pile frame slope plate skirt plate (5-13) on the lower side of the corner pile frame slope plate (5-12).

6. The basic structure of an underwater oil storage tank according to claim 4, characterized in that, The said stabilizing frame (6) includes a main pile frame connection section (6-1), a cantilever (6-2), a cantilever support leg (6-3), a cantilever fixed foot (6-4), a side pile frame fixed section (6-5), a main pile frame connection screw hole (6-6), and a side pile frame connection screw hole (6-7); The central position of the stabilizer (6) is the main pile frame connection section (6-1), which is a cylindrical structure. The outer diameter of the main pile frame connection section (6-1) is the same as the inner diameter of the stabilizing cylinder (3-1), and the inner diameter of the main pile frame connection section (6-1) is the same as the outer diameter of the stabilizer fixed section (1-1); four cantilevers (6-2) are arranged around the main pile frame connection section (6-1); the outer end of the cantilever (6-2) is the side pile frame fixed section (6-5), which is a cylindrical structure. The outer diameter of the side pile frame fixed section (6-5) is the same as the inner diameter of the side pile frame stabilizing cylinder (4-1), and the inner diameter of the side pile frame fixed section (6-5) is the same as the outer diameter of the stabilizer leg fixed section (2-1); both ends of the cantilever (6-2) are respectively connected to the main pile frame connection section (6-1) and the side pile frame fixed section (6-5). At the connection position of the cantilever (6-2) and the main pile frame connection section (6-1), there is a main pile frame connection screw hole (6-6), and at the connection position of the cantilever (6-2) and the side pile frame fixed section (6-5), there is a side pile frame connection screw hole (6-7). The main pile frame connection screw hole (6-6) and the side pile frame connection screw hole (6-7) respectively correspond to the main stabilizer connection screw hole (3-6) and the side stabilizer connection screw hole (4-6); below the cantilever (6-2) is the cantilever support leg (6-3), and the cantilever support leg (6-3) is connected to the cantilever fixed foot (6-4) below; the cantilever fixed foot (6-4) is a plate structure with screw holes, and the screw holes of the cantilever fixed foot (6-4) correspond to the main board frame connection screw hole (3-7).

7. An underwater oil storage tank foundation structure according to claim 5, characterized in that, The main board frame (7) includes a main board frame framework (7-1), a main board frame connection end (7-2), a main board frame anti-settlement plate (7-3), a main board frame skirt plate (7-4), and a connecting rod groove (7-5); The main body of the main board frame (7) is the main board frame framework (7-1); both ends of the main board frame framework (7-1) are the main board frame connection ends (7-2), and there are screw holes on the main board frame connection ends (7-2) corresponding to the main board frame connection screw hole (3-7); the lower side of the main board frame framework (7-1) is the main board frame anti-settlement plate (7-3), and the main board frame anti-settlement plate (7-3) is a plate structure with through holes. The two side edges of the main board frame anti-settlement plate (7-3) are cut into arcs, and the arc radian is the same as that of the arcs on the main pile frame anti-settlement plate (3-8), the side pile frame anti-settlement plate (4-8), and the corner pile frame anti-settlement plate (5-8); the lower side of the main board frame anti-settlement plate (7-3) is the main board frame skirt plate (7-4); there are triangular stiffeners at the connection position of the main board frame anti-settlement plate (7-3) and the main board frame framework (7-1); at the bottom of the main board frame anti-settlement plate (7-3) corresponding to both sides of the main board frame framework (7-1), there are connecting rod grooves (7-5), and the shape and structure of the connecting rod grooves (7-5) are adapted to the main board frame connecting rod (3-10) and the side pile frame main board frame connecting rod (4-10).

8. An underwater oil storage tank foundation structure according to claim 5, characterized in that, The side board frame (8) includes a side board frame framework (8-1), a side board frame connection end (8-2), a side board frame anti-settlement plate (8-3), a side board frame skirt plate (8-4), and a side board frame connecting rod groove (8-5); The main body of the side plate frame (8) is the side plate frame framework (8-1); both ends of the side plate frame framework (8-1) are the side plate frame connection ends (8-2), and there are screw holes corresponding to the side pile frame main board frame connection screw holes (4-7) and the corner pile frame side plate frame connection screw holes (5-7) on the side plate frame connection ends (8-2); the lower side of the side plate frame framework (8-1) is the side plate frame anti-settlement plate (8-3), and the side plate frame anti-settlement plate (8-3) is a plate structure with through holes. One side edge of the side plate frame anti-settlement plate (8-3) is cut into an arc, and the arc has the same radian as the arcs on the main pile frame anti-settlement plate (3-8), the side pile frame anti-settlement plate (4-8), and the corner pile frame anti-settlement plate (5-8); the lower side of the side plate frame anti-settlement plate (8-3) is the side plate frame skirt plate (8-4); there are triangular reinforcing ribs at the connection position between the side plate frame anti-settlement plate (8-3) and the side plate frame framework (8-1); there are side plate frame connecting rod grooves (8-5) at the bottoms of the side plate frame anti-settlement plates (8-3) corresponding to both sides of the side plate frame framework (8-1), and the shape and structure of the side plate frame connecting rod grooves (8-5) are adapted to the side pile frame main board frame connecting rod (4-10) and the corner pile frame side plate frame connecting rod (5-10).

Images