Anti-impact structure of cantilever platform

Abstract

The structure comprises a plurality of strong cross beam web plates located below the cantilever platform, the bottom of the cantilever platform is connected with the upper ends of the plurality of strong cross beam web plates, the lower ends of the plurality of strong cross beam web plates are connected with a strong cross beam panel, the strong cross beam panel is provided with a plurality of groups of holes, and a wave absorbing pipeline is arranged in each hole; the transverse range of the strong cross beam web is arranged from the bulkhead at the first end to the eave material at the second end, and the height of the strong cross beam web is gradually reduced in the direction from the longitudinal bulkhead at the first end to the eave material at the second end. The wave absorbing pipeline spiral steel bars with different widths are arranged in the areas between the different strong cross beam webs, and it is guaranteed that wave force of each area of the cantilever platform cannot reach the peak value at the same time; the wave absorbing pipelines located at the same transverse position are arranged to be different in length, and it is guaranteed that wave force at the same transverse position of the cantilever platform cannot reach the peak value at the same time; the damping elastic body is installed on the vertical wall of the wave absorbing pipeline, and the vertical pulsating pressure can be effectively reduced.

Description

Technical Field

[0001] The invention relates to an anti-impact structure of a cantilever platform and belongs to the field of marine engineering structure design. Background Art

[0002] In recent years, the development of marine resources has been continuously expanding to the deep sea, making the wave environment conditions of marine engineering structures, which are basic facilities, increasingly severe. The cantilever platform is located outside the side of the marine structure and is frequently hit by wave loads. Therefore, in order to ensure the safety of the cantilever platform, it is necessary to design the cantilever platform to prevent impact. According to previous design experience, multiple groups of cantilever beams, such as T-profiles, are usually set under the cantilever platform to support the cantilever platform, and the adjacent T-profile panels are combined into a ring-shaped panel structure. However, this design form still has the following problems:

[0003] (1) The wave-absorbing effect of the annular panel is limited, so its anti-impact design is still achieved by improving the structural strength of the cantilever beam;

[0004] (2) The sizes of adjacent annular panels are basically the same, so the wave impact force reduction effect in different structural areas is the same, and no consideration is given to how to prevent the wave impact force in different areas from reaching peak values ​​at the same time. Summary of the invention

[0005] The technical problem to be solved by the present invention is: how to prevent the wave impact forces in different areas from reaching peak values ​​at the same time, thereby effectively reducing the wave impact forces of the cantilever platform.

[0006] In order to solve the above technical problems, the technical solution of the present invention is to provide an anti-impact structure of a cantilever platform, which is characterized in that it includes multiple strong transverse beam webs located below the cantilever platform, the bottom of the cantilever platform is connected to the upper ends of the multiple strong transverse beam webs, the lower ends of the multiple strong transverse beam webs are connected to the strong transverse beam panel, the strong transverse beam panel is provided with multiple groups of openings, and each hole is provided with a wave-absorbing pipe; the lateral range of the strong transverse beam web is set from the bulkhead at the first end to the eaves material at the second end, and the height of the strong transverse beam web gradually decreases from the longitudinal bulkhead at the first end to the eaves material at the second end.

[0007] Preferably, the ratio of the height of the second end of the web of the strong transverse beam to the height of the first end is between 1 / 4 and 1 / 2.

[0008] Preferably, the length of the opening on each of the strong transverse beam panels is between 1 / 4 and 1 / 3 of the distance between the bulkhead and the surrounding eaves material.

[0009] Preferably, the lower end of the wave-breaking pipe wall is connected to the corresponding strong crossbeam panel opening, and the upper end of the wave-breaking pipe wall is at a distance from the cantilever platform.

[0010] Preferably, the wave-absorbing pipe comprises a wave-absorbing pipe wall, the inner side of which is sealingly connected to the outer side of the damping elastomer, and the damping elastomer is a sealing structure, which seals and separates the inside of the wave-absorbing pipe into two upper and lower parts.

[0011] Preferably, the wave-absorbing pipe includes a wave-absorbing pipe wall, the inner side of which is connected to a damping elastomer, and a plurality of gap channels are provided between the outer side of the damping elastomer and the inner side of the wave-absorbing pipe wall; a blocking plate covering the gap channels is provided on the inner side of the wave-absorbing pipe wall above the damping elastomer.

[0012] Preferably, the wave-breaking pipe also includes a spiral steel bar of the wave-breaking pipe, a plurality of inclined spiral steel bars of the wave-breaking pipe are fixed to the inner side of the vertical wall of the wave-breaking pipe, the outer side of the damping elastomer is fixed to the inner side of the plurality of spiral steel bars of the wave-breaking pipe, a gap is provided between any two adjacent spiral steel bars of the wave-breaking pipe, and the damping elastomer is a sealing structure; the periphery of the damping elastomer is connected to the spiral steel bar of the wave-breaking pipe, so that a gap channel is formed between the periphery of the damping elastomer, between any two adjacent spiral steel bars of the wave-breaking pipe, and between the vertical walls of the wave-breaking pipe; a blocking plate is connected to the inner side of the vertical wall of the wave-breaking pipe and above the spiral steel bar of the wave-breaking pipe.

[0013] Preferably, the wave-absorbing duct vertical wall and the wave-absorbing duct spiral steel bar located between adjacent strong transverse beam webs form a structural unit; the length of the wave-absorbing duct vertical wall of the same structural unit gradually decreases from the longitudinal bulkhead at the first end to the eaves material at the second end, and the upper end of the wave-absorbing duct vertical wall is located in the same horizontal plane; the wave-absorbing duct spiral steel bars of different structural units have different widths.

[0014] Preferably, when viewed from the longitudinal direction, for the areas between different strong cross beam webs, the dimensions of the vertical walls of all the wave-breaking ducts are the same, and the widths of the spiral steel bars of the wave-breaking ducts are different, so that the wave-breaking rate in each area is different, ensuring that the wave impact force in each area of ​​the cantilever platform will not reach the peak value at the same time.

[0015] Preferably, when viewed from the lateral direction, for all the wave-breaking pipes located at the same lateral position, the upper ends of the wave-breaking pipes are located in the same horizontal plane, thereby ensuring that the wave-breaking pipes located at the same lateral position have different lengths, ensuring that the wave-breaking pipes located at the same lateral position have different wave dissipation degrees, and further ensuring that the wave impact force at the same lateral position of the cantilever platform will not reach a peak value at the same time.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention can effectively reduce the wave impact force of the cantilever platform by setting a number of wave-breaking pipes connected to the strong transverse beam panels. Wave-breaking pipe spiral steel bars of different widths are set in the area between different strong transverse beam webs to ensure that the wave impact force in each area of ​​the cantilever platform will not reach the peak at the same time; the wave-breaking pipes at the same lateral position are set to different lengths to ensure that the wave impact force at the same lateral position of the cantilever platform will not reach the peak at the same time; damping elastic bodies are installed on the vertical walls of the wave-breaking pipes to effectively reduce the vertical pulsating pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional schematic diagram of an anti-attack structure of a cantilever platform;

[0019] Figure 2 This is the plan view of the cantilevered platform;

[0020] Figure 3 This is the plan view of the strong beam panel;

[0021] Figure 4 This is a side view of the wave-breaking pipe. DETAILED DESCRIPTION

[0022] In order to make the present invention more clearly understood, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0023] Example 1

[0024] The present invention provides an anti-slamming structure of a cantilever platform, such as Figure 1-Figure 4 As shown, it includes several strong transverse beam webs 2, strong transverse beam panels 3, and several wave-absorbing pipes. All strong transverse beam webs 2 are supported and connected to the bottom of the side of the cantilever platform 1, serving as the transverse strong support member of the cantilever platform 1. The lower end of the strong transverse beam web 2 is connected to the strong transverse beam panel 3. A plurality of longitudinal bones 7 are provided on the bottom surface of the middle position of the cantilever platform 1, similar to reinforcing ribs. The strong transverse beam panel 3 is inclined to the plane of the cantilever platform 1, and the end close to the bulkhead 9 is lower than the end close to the eaves material 8.

[0025] Each strong transverse beam web 2 has a transverse range from the bulkhead 9 at the first end to the skirting material 8 at the second end, and the height of the strong transverse beam web 2 gradually decreases from the longitudinal bulkhead 9 at the first end to the skirting material 8 at the second end. The ratio of the height of the second end of the strong transverse beam web 2 to the height of the first end is between 1 / 4 and 1 / 2.

[0026] The strong transverse beam panel 3 and its adjacent strong transverse beam panel 3 form a whole; each strong transverse beam panel 3 is provided with multiple groups of openings, and the length of each opening (that is, the distance between the hole walls in the direction from the bulkhead 9 to the eaves material 8) is between 1 / 4 and 1 / 3 of the distance between the bulkhead 9 and the eaves material 8.

[0027] The plurality of wave-breaking pipes are composed of a wave-breaking pipe wall 4, a plurality of wave-breaking pipe spiral steel bars 5 welded to the wave-breaking pipe wall 4, and a damping elastic body 6 installed inside the wave-breaking pipe spiral steel bars 5, and are used to dissipate the energy of water particles, thereby reducing the speed of water particles reaching the cantilever platform 1 and reducing the wave impact force. The lower end of the wave-breaking pipe wall 4 is connected to the corresponding strong cross beam panel 3 opening, and the upper end of the wave-breaking pipe wall 4 is at a certain distance from the cantilever platform 1.

[0028] Among them, a plurality of spiral steel bars 5 of the wave-breaking pipe are welded obliquely on the inner side of the vertical wall 4 of the wave-breaking pipe. The damping elastic body 6 is installed on the inner side of the plurality of spiral steel bars 5 of the wave-breaking pipe. A gap is provided between any two adjacent spiral steel bars 5 of the wave-breaking pipe, and the damping elastic body 6 is a sealing structure. The periphery of the damping elastic body 6 is connected to the spiral steel bars 5 of the wave-breaking pipe, so that a gap channel is formed between the periphery of the damping elastic body 6, between any two adjacent spiral steel bars 5 of the wave-breaking pipe, and between the vertical walls 4 of the wave-breaking pipe. A blocking plate 10 is provided on the inner side of the vertical wall 4 of the wave-breaking pipe and above the spiral steel bars 5 of the wave-breaking pipe, which is used to block the seawater entering the wave-breaking pipe from the gap channel and prevent the seawater from entering the groove between two adjacent wave-breaking pipes, which is formed by the strong cross beam panel 3, the outer side of the vertical wall 4 of the wave-breaking pipe and the web plate 2 of the strong cross beam, that is, inside the strong cross beam.

[0029] The elastic damping body 6 can be made of rubber, elastic polyurethane foam, polypropylene and other materials.

[0030] The wave-absorbing duct vertical wall 4 and the wave-absorbing duct spiral steel bar 5 located between adjacent strong transverse beam webs 2 form a structural unit. The length of the wave-absorbing duct vertical wall 4 of the same structural unit gradually decreases from the longitudinal bulkhead 9 at the first end to the eaves material 8 at the second end, and the upper end of the wave-absorbing duct vertical wall 4 is located in the same horizontal plane. The wave-absorbing duct spiral steel bars 5 of different structural units have different widths.

[0031] Specifically:

[0032] When viewed from the longitudinal direction, for the area between different strong beam webs 2, the dimensions of the vertical walls 4 of the wave-absorbing pipes are the same, but the widths of the spiral steel bars 5 of the wave-absorbing pipes are different, such as Figure 3 As shown, the wave absorption rate of each area is different, thereby ensuring that the wave impact force of each area of ​​the cantilever platform 1 will not reach the peak value at the same time.

[0033] When viewed from the horizontal direction, for the wave-breaking pipes at the same horizontal position, the upper ends of the wave-breaking pipes are required to be located in the same horizontal plane, ensuring that the wave-breaking pipes at the same horizontal position have different lengths, such as Figure 4 As shown, it is ensured that the wave-breaking pipes at the same transverse position have different wave dissipation degrees, thereby ensuring that the wave impact force at the same transverse position of the cantilever platform 1 will not reach the peak value at the same time.

[0034] Example 2

[0035] In this embodiment, the wave-breaking pipe includes a wave-breaking pipe wall 4, the inner side of which is sealed to the outer side of the damping elastic body 6. The damping elastic body 6 is a sealing structure that seals the inside of the wave-breaking pipe into two parts, an upper part and an lower part.

[0036] The rest is the same as Example 1.

Claims

1. An anti-slamming structure of a cantilever platform, characterized in that: The invention comprises a plurality of strong transverse beam webs (2) located below the cantilever platform (1); the bottom of the cantilever platform (1) is connected to the upper ends of the plurality of strong transverse beam webs (2); the lower ends of the plurality of strong transverse beam webs (2) are connected to a strong transverse beam panel (3); a plurality of groups of openings are provided on the strong transverse beam panel (3); a wave-absorbing pipe is provided in each hole; the transverse range of the strong transverse beam webs (2) is arranged from the bulkhead (9) at the first end to the eaves material (8) at the second end, and the height of the strong transverse beam webs (2) gradually decreases in the direction from the longitudinal bulkhead (9) at the first end to the eaves material (8) at the second end.

2. The anti-slam structure of a cantilever platform as claimed in claim 1, characterized in that: The ratio of the height of the second end of the strong cross beam web (2) to the height of the first end is between 1 / 4 and 1 / 2.

3. The anti-slam structure of a cantilever platform as claimed in claim 1, characterized in that: The length of the opening on each of the strong transverse beam panels (3) is between 1 / 4 and 1 / 3 of the distance between the bulkhead (9) and the surrounding eaves material (8).

4. The anti-slam structure of a cantilever platform as claimed in claim 1, characterized in that: The lower end of the wave-breaking pipe wall (4) is connected to the corresponding strong crossbeam panel (3) through an opening, and the upper end of the wave-breaking pipe wall (4) is spaced apart from the cantilever platform (1).

5. The anti-slam structure of a cantilever platform as claimed in claim 1, characterized in that: The wave-absorbing pipe comprises a wave-absorbing pipe vertical wall (4), the inner side of which is sealedly connected to the outer side of a damping elastic body (6), and the damping elastic body (6) is a sealing structure, which seals and separates the inside of the wave-absorbing pipe into two upper and lower parts.

6. The anti-slam structure of a cantilever platform as claimed in claim 1, characterized in that: The wave-absorbing pipe comprises a wave-absorbing pipe vertical wall (4), the inner side of which is connected to a damping elastic body (6), and a plurality of gap channels are provided between the outer side of the damping elastic body (6) and the inner side of the wave-absorbing pipe vertical wall (4); a blocking plate (10) covering the gap channels is provided on the inner side of the wave-absorbing pipe vertical wall (4) and located above the damping elastic body (6).

7. The anti-slamming structure of a cantilever platform as claimed in claim 6, characterized in that: The wave-breaking pipe further comprises a wave-breaking pipe spiral steel bar (5), a plurality of inclined wave-breaking pipe spiral steel bars (5) are fixed on the inner side of the wave-breaking pipe vertical wall (4), the outer side of the damping elastic body (6) is fixed on the inner side of the plurality of wave-breaking pipe spiral steel bars (5), a gap is provided between any two adjacent wave-breaking pipe spiral steel bars (5), and the damping elastic body (6) is a sealing structure; the periphery of the damping elastic body (6) is connected to the wave-breaking pipe spiral steel bar (5), so that a gap channel is formed between the periphery of the damping elastic body (6), between any two adjacent wave-breaking pipe spiral steel bars (5), and between the wave-breaking pipe vertical walls (4); a blocking plate (10) is connected to the inner side of the wave-breaking pipe vertical wall (4) and located above the wave-breaking pipe spiral steel bars (5).

8. The anti-slamming structure of a cantilever platform as claimed in claim 7, characterized in that: The wave-absorbing duct vertical wall (4) and the wave-absorbing duct spiral steel bar (5) located between the adjacent strong transverse beam webs (2) form a structural unit; the length of the wave-absorbing duct vertical wall (4) of the same structural unit gradually decreases from the longitudinal bulkhead (9) at the first end to the eaves material (8) at the second end, and the upper ends of the wave-absorbing duct vertical wall (4) are located in the same horizontal plane; the wave-absorbing duct spiral steel bars (5) of different structural units have different widths.

9. The anti-slamming structure of a cantilever platform as claimed in claim 8, characterized in that: When viewed from the longitudinal direction, for the areas between different strong cross beam webs (2), the dimensions of the vertical walls (4) of the wave-breaking pipes are the same, and the widths of the spiral steel bars (5) of the wave-breaking pipes are different, so that the wave-breaking rate in each area is different, ensuring that the wave impact force in each area of ​​the cantilever platform (1) will not reach the peak value at the same time.

10. The anti-slamming structure of a cantilever platform as claimed in claim 8, characterized in that: When viewed from the transverse direction, for all the wave-breaking pipes located at the same transverse position, the upper ends of the wave-breaking pipes are located in the same horizontal plane, thereby ensuring that the wave-breaking pipes located at the same transverse position have different lengths, ensuring that the wave-breaking pipes located at the same transverse position have different wave dissipation degrees, and further ensuring that the wave impact force at the same transverse position of the cantilever platform (1) will not reach a peak value at the same time.

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