An offshore platform column foundation structure

Abstract

The utility model relates to a kind of offshore platform column base structures.The technical scheme used in the utility model is: a kind of offshore platform column base structure, it is arranged between fixed column and seabed, with structure main body, the middle position at the top of structure main body is made with installation slot, the bottom of fixed column is provided with the connecting plate arranged along the circumferential direction of fixed column, when fixed column is arranged on structure main body, the bottom of fixed column and connecting plate are clamped in the installation slot of structure main body, at least two first installation holes are provided on the connecting plate along the circumferential direction of fixed column, first threaded hole is made in the installation slot of structure main body and corresponding position with first installation hole, first bolt that can pass through first installation hole on connecting plate and is threadedly connected with first threaded hole on structure main body is provided on connecting plate.The fixed column can be effectively prevented from being detached from the structure main body;It is convenient for the protective frame to protect the structure main body;It can resist overturning force from different directions in all directions.

Description

Technical Field

[0001] This utility model relates to a column base structure for offshore platforms. It is applicable to the field of offshore platform foundation structure technology. Background Technology

[0002] Conventional concrete or stone column foundations face additional severe challenges when applied in marine environments: the strong corrosiveness of seawater to the materials; the continuous horizontal impact and overturning moment of waves and ocean currents; load variations caused by tidal changes; the low bearing capacity and susceptibility to erosion of seabed foundations (such as silt and sand); and the extreme difficulty and high cost of construction and subsequent maintenance and replacement under severe marine weather conditions. Furthermore, plug-in connection methods are more prone to failure under dynamic marine loads, leading to a significant increase in the risk of overall platform instability. Summary of the Invention

[0003] The technical problem to be solved by this utility model is: to solve the above-mentioned technical problem, this utility model provides a column base structure for offshore platforms.

[0004] The technical solution adopted by this utility model is as follows: a column base structure for an offshore platform, arranged between a fixed column and the seabed, having a main structure, with an installation groove at the middle of the top of the main structure, and a connecting plate arranged along the circumferential direction of the fixed column at the bottom of the fixed column. When the fixed column is arranged on the main structure, the bottom of the fixed column and the connecting plate are fitted into the installation groove of the main structure. At least two first installation holes are provided on the connecting plate along the circumferential direction of the fixed column. A first threaded hole is made in the installation groove of the main structure at the position corresponding to the first installation hole. A first bolt is provided on the connecting plate that can pass through the first installation hole on the connecting plate and threadedly engage with the first threaded hole on the main structure.

[0005] The main structure has a top plate, and at least three base plates are installed at the lower end of the top plate. Each base plate is arranged radially along the fixed column on the main structure. A support ring is installed at the lower end of the base plate, and the support ring is arranged on the outer side of the base plate. The base plate is fixedly connected to the inner wall of the support ring.

[0006] An mounting plate is installed at the upper middle position of the top plate, and a support plate is installed at the upper end of the mounting plate. The mounting groove is made on the support plate. A base block arranged radially along the fixed column is installed on the outer side of the mounting plate at the upper end of the top plate. The cross-sectional area of ​​the support plate is larger than that of the mounting plate, and the base block is sandwiched between the top plate and the support plate.

[0007] An installation frame is installed on the outer side of the top plate, arranged in the circumferential direction of the top plate. A protective frame is fitted on the outer side of the installation frame. A second installation hole is formed on the side wall of the protective frame, arranged in the circumferential direction of the protective frame. A second threaded hole is formed on the installation frame at the position corresponding to the second installation hole. A second bolt is arranged on the protective frame, which can pass through the second installation hole on the protective frame and be threadedly engaged with the second threaded hole on the installation frame.

[0008] A reinforcing support structure is provided on the outside of the support ring; the reinforcing support structure includes a fixing ring sleeved on the support ring, and a plurality of support columns evenly distributed along the circumference of the fixing ring are provided on the outside of the fixing ring, and a sharp insertion end is provided at the end of the support column, and the other end of the support column is hinged to the outer wall of the fixing ring.

[0009] The beneficial effects of this utility model are as follows: By setting a connecting plate at the bottom of the fixed column, and when the fixed column base connecting plate is inserted into the mounting groove of the main structure, the fixed column of the connecting plate base is fixedly connected to the main structure by the first bolt, which can effectively prevent the fixed column from coming off the main structure; By setting at least three base plates at the bottom of the top plate and fixing the lower outer side of the base plates to the same support ring, the main structure has strong structural strength; By installing a detachable protective frame on the outer side of the top plate of the main body of the device by the second bolt, the protective frame can provide protection for the main structure; The evenly distributed support columns can resist overturning forces from different directions in all directions, achieving all-round resistance. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure provided by this utility model; Figure 2 This is a structural cross-sectional view provided by this utility model; Figure 3 This is a top view provided by this utility model; Figure 4 yes Figure 2 Enlarged view of point A in the middle; Figure 5 This is a structural diagram of the reinforced support structure.

[0011] In the figure, 1. Support ring; 2. Base plate; 3. Main structure; 4. Top plate; 5. Base block; 6. Support plate; 7. Connecting plate; 8. First mounting hole; 9. First bolt; 10. Fixing column; 11. Connecting block; 12. Protective frame; 13. Second bolt; 14. Mounting frame; 15. Fixing ring; 16. Supporting column; 17. Sharp insertion end. Detailed Implementation

[0012] like Figures 1-4As shown, a column base structure for an offshore platform, in this embodiment, includes a main body 3. A mounting groove is formed at the center of the top of the main body 3. A connecting plate 7 is provided at the bottom of the fixed column 10, arranged circumferentially around the fixed column 10. When the fixed column 10 is placed on the main body 3, the bottom of the fixed column 10 and the connecting plate 7 are fitted into the mounting groove of the main body 3. At least two first mounting holes 8 are provided on the connecting plate 7 along the circumferential direction of the fixed column 10. A first threaded hole is formed in the mounting groove of the main body 3 at a position corresponding to the first mounting holes 8. A first bolt 9 is provided on the connecting plate 7, capable of passing through the first mounting holes 8 and threadedly engaging with the first threaded hole on the main body 3. Thus, after the fixed column 10 and the connecting plate 7 at its bottom are inserted into the mounting groove of the main body 3, the connecting plate 7 is fixedly connected in the mounting groove by the first bolt 9, achieving a fixed connection between the fixed column 10 and the main body 3, effectively preventing the fixed column 10 from detaching from the column base.

[0013] Specifically, combining Figures 1-4 As shown, the main structure 3 has a top plate 4, and at least three base plates 2 are installed at the lower end of the top plate 4. Each base plate 2 is arranged radially along the fixing column 10 on the main structure 3. A support ring 1 is installed at the lower end of the base plate 2, and the support ring 1 is arranged on the outer side of the base plate 2. The base plate 2 is fixedly connected to the inner wall of the support ring 1. In this way, because the base plates 2 are evenly arranged along the circumferential direction of the fixing column 10, the main structure 3 has high structural strength while being relatively simple in structure and easy to move.

[0014] Specifically, combining Figure 2 and Figure 4 As shown, an mounting plate is installed at the upper center of the top plate 4, and a support plate 6 is installed at the upper end of the mounting plate. The mounting groove is formed on the support plate 6. A base block 5, arranged radially along the fixed column 10, is installed on the outer side of the mounting plate at the upper end of the top plate 4. The cross-sectional area of ​​the support plate 6 is larger than that of the mounting plate, and the base block 5 is sandwiched between the top plate 4 and the support plate 6. In this way, the base block 5 can effectively enhance the structural strength of the main body 3 of the structure, and the base block 5, sandwiched between the top plate 4 and the support plate 6, can provide further support for the support plate 6.

[0015] Specifically, combining Figure 1 and Figure 2As shown, a mounting frame 14 arranged circumferentially on the outer side of the top plate 4 is installed. A protective frame 12 is fitted onto the outer side of the mounting frame 14. A second mounting hole arranged circumferentially on the side wall of the protective frame 12 is formed. A second threaded hole is formed on the mounting frame 14 at a position corresponding to the second mounting hole. A second bolt 13 is arranged on the protective frame 12, which can pass through the second mounting hole on the protective frame 12 and threadedly engage with the second threaded hole on the mounting frame 14. In this way, the protective frame 12 can easily protect the main body of the device. Furthermore, the protective frame 12 can be easily removed and replaced by removing the second bolt 13 between the protective frame 12 and the mounting frame 14.

[0016] The top plate 4 is connected to the protective frame 12 and the mounting frame 14 by a connecting block 11.

[0017] Specifically, combining Figure 5 As shown, a reinforcing support structure is provided on the outer side of the support ring 1; the reinforcing support structure includes a fixing ring 15 sleeved on the support ring 1, and a plurality of support columns 16 evenly distributed around the circumference of the fixing ring 15 are provided on the outer side of the fixing ring 15. A sharp insertion end 17 is provided at the end of the support column 16, and the other end of the support column 16 is hinged to the outer wall of the fixing ring 15.

[0018] The fixed column 16 has a sharp insertion end 17 at its end, which can be effectively driven into the seabed soil layer to form a deep anchoring point.

[0019] When the main structure 3 is subjected to overturning moments caused by large eccentric loads, wind loads, or seismic loads, these fixed columns 16 driven into the seabed soil layer can provide strong pull-out resistance and lateral restraint to resist overturning. The evenly distributed fixed columns 16 can resist overturning forces from different directions in all directions, achieving all-round resistance. The hinged design of the support columns 16 adapts to changes in terrain.

[0020] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A column base structure for an offshore platform, arranged between a fixed column (10) and the seabed, characterized in that: The structure has a main body (3), and an installation groove is made at the middle position of the top of the main body (3). The bottom of the fixed column (10) is provided with a connecting plate (7) arranged in the circumferential direction of the fixed column (10). When the fixed column (10) is arranged on the main body (3), the bottom of the fixed column (10) and the connecting plate (7) are fitted into the installation groove of the main body (3). At least two first installation holes (8) are provided on the connecting plate (7) in the circumferential direction of the fixed column (10). A first threaded hole is made in the installation groove of the main body (3) at the position corresponding to the first installation hole (8). A first bolt (9) is provided on the connecting plate (7) that can pass through the first installation hole (8) on the connecting plate (7) and threadedly engage with the first threaded hole on the main body (3).

2. The column base structure for an offshore platform according to claim 1, characterized in that: The main body (3) has a top plate (4), and at least three base plates (2) are installed at the lower end of the top plate (4). Each base plate (2) is arranged radially along the fixed column (10) on the main body (3). A support ring (1) is installed at the lower end of the base plate (2). The support ring (1) is arranged on the outside of the base plate (2), and the base plate (2) is fixedly connected to the inner wall of the support ring (1).

3. The column base structure for an offshore platform according to claim 2, characterized in that: An mounting plate is installed at the upper middle position of the top plate (4), and a support plate (6) is installed at the upper end of the mounting plate. The mounting groove is made on the support plate (6). A base block (5) arranged in the radial direction of the fixed column (10) is installed on the outer side of the mounting plate at the upper end of the top plate (4). The cross-sectional area of ​​the support plate (6) is larger than the cross-sectional area of ​​the mounting plate. The base block (5) is sandwiched between the top plate (4) and the support plate (6).

4. The column base structure for an offshore platform according to claim 2, characterized in that: An installation frame (14) arranged in the circumferential direction of the top plate (4) is installed on the outside of the top plate (4). A protective frame (12) is fitted on the outside of the installation frame (14). A second installation hole arranged in the circumferential direction of the protective frame (12) is made on the side wall of the protective frame (12). A second threaded hole is made on the installation frame (14) at the position corresponding to the second installation hole. A second bolt (13) that can pass through the second installation hole on the protective frame (12) and threadedly engage with the second threaded hole on the installation frame (14) is arranged on the protective frame (12).

5. A column base structure for an offshore platform according to any one of claims 2-4, characterized in that: A reinforcing support structure is provided on the outside of the support ring (1); the reinforcing support structure includes a fixing ring (15) sleeved on the support ring (1), and a plurality of support columns (16) evenly distributed around the circumference of the fixing ring (15) are provided on the outside of the fixing ring (15), and a sharp insertion end (17) is provided at the end of the support column (16), and the other end of the support column (16) is hinged to the outer wall of the fixing ring (15).

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