Trestle structure for underwater suction pile foundation of subsea pipeline

Abstract

The trestle structure of the underwater suction pile foundation of the subsea pipeline comprises a trestle mechanism, penetration structures are arranged on the two sides of the trestle mechanism, at least one penetration structure is arranged to be a suction pile, and a negative pressure generator is arranged in the suction pile. By means of the trestle structure, pipelines can be fully protected, closed protection and open supporting exist, workers can conveniently conduct various selections, and the trestle structure has the advantages of being short in construction period, low in construction difficulty, wide in application range and the like. The design structure can effectively bear huge horizontal and vertical loads and bending moment. Besides, the suction pile foundation further has multiple remarkable advantages such as investment cost saving, foundation installation period shortening and reutilization, the overall penetration depth can be adjusted by adjusting the internal negative pressure generator, and the suction pile foundation is suitable for various geological units and geological types such as covering sludge, clay, silt and sandy soil.

Description

Technical Field

[0001] The invention belongs to the technical field of marine engineering, and in particular relates to a trestle structure for solving the underwater suction pile foundation of a submarine pipeline. Background Art

[0002] When the submarine pipeline encounters uneven seabed topography or obstacles such as pipelines in previous projects during route layout, it is generally necessary to avoid the corresponding obstacles, resulting in the pipeline route layout not being able to achieve the optimal layout, affecting the difficulty of route selection and the economic efficiency of project investment. In addition, in the prior art, offshore oil fields are often encountered in the field of oil extraction. The exploitation of offshore oil fields requires the construction of artificial islands and sea access roads connecting the artificial islands and land at sea. Construction personnel enter the artificial islands through the sea access roads and conduct oil field exploitation on the artificial islands. For the sea access road, it is currently achieved by building a trestle. However, when building a trestle, due to the high required height, and in order to ensure the stability of the structure, the diameter of the pile foundation is also relatively large, and the construction difficulty of the trestle on a soft soil foundation with poor foundation stability is relatively large.

[0003] Therefore, it is urgent to design a trestle structure that can solve the underwater suction pile foundation of the submarine pipeline to solve the above-mentioned problems. Summary of the invention

[0004] In order to solve the technical problems of great difficulty and high construction cost of pile foundation construction mentioned in the background technology, a trestle structure for solving the underwater suction pile foundation of submarine pipelines is provided to solve the above problems.

[0005] To achieve the above purpose, the specific technical solution of the trestle structure of the underwater suction pile foundation of the submarine pipeline of the present invention is as follows: A trestle structure for solving the underwater suction pile foundation of a submarine pipeline comprises a trestle mechanism. Both sides of the trestle mechanism are provided with penetration structures. At least one penetration structure is set as a suction pile. A negative pressure generator is arranged inside the suction pile.

[0006] Furthermore, the penetration structure also includes columns, which are arranged on the suction piles and are respectively connected to the suction piles and the trestle mechanism.

[0007] Furthermore, at least two columns are provided.

[0008] Furthermore, at least four columns are provided, and the end face of the suction pile is provided in a circular shape, on which a first axis and a second axis intersecting at the center of the circle are provided, so as to divide the end face of the suction pile into four areas, and at least one column is provided in each area.

[0009] Further, in the vertical direction, the trestle mechanism is located above the penetration structure.

[0010] Furthermore, the trestle mechanism comprises an accommodating channel, which runs through both sides of the trestle mechanism as a whole and is used to accommodate pipelines.

[0011] Furthermore, the trestle mechanism includes at least three main beams, and adjacent main beams are connected by auxiliary beams to enclose a accommodating channel.

[0012] Furthermore, a plurality of auxiliary beams are provided, and the auxiliary beams are arranged at an angle to the main beam.

[0013] Furthermore, the trestle mechanism also includes a support beam, which extends horizontally and protrudes from the main beam frame, and the pipelines not arranged in the accommodating channel can be overlapped on the protruding end of the support beam.

[0014] Furthermore, an anti-dropout member is provided at the protruding end of the support beam, and the pipeline not arranged in the accommodating channel is arranged between the anti-dropout member and the support beam.

[0015] The trestle structure of the underwater suction pile foundation of the submarine pipeline of the present invention has the following advantages: the pipeline can be fully protected by the trestle structure, there are closed protection and open support, which is convenient for the staff to make multiple choices, and there are also advantages such as short construction period, low construction difficulty, and wide application range. In addition, the suction pile is a unique structural form, and its design structure can effectively withstand huge horizontal and vertical loads and bending moments. In addition, the suction pile foundation also has many significant advantages, such as saving investment costs, shortening the foundation installation period, and being reusable. The overall penetration depth can be adjusted by adjusting the internal negative pressure generator, and it is suitable for a variety of geological units, covering geological types such as silt, clay, silt and sand. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a trestle structure for solving the underwater suction pile foundation of a submarine pipeline according to the present invention; Figure 2 A top view of the penetration structure of the present invention; Figure 3 A side sectional view of a trestle structure for solving the underwater suction pile foundation of a submarine pipeline according to the present invention; Figure 4 A top cross-sectional view of a trestle structure for solving the underwater suction pile foundation of a submarine pipeline according to the present invention; Figure 5 A cross-sectional view from another perspective of the trestle structure for solving the underwater suction pile foundation of the submarine pipeline of the present invention; Figure 6 It is a side view of the trestle mechanism of the present invention.

[0017] Description of the markings in the figure: 1. Trestle mechanism; 11. Main beam; 12. Secondary beam; 13. Support beam; 14. Anti-slip parts; 2. penetration structure; 21. suction pile; 22. column; 231. first axis; 232. second axis; 100. Accommodation channel. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0019] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0020] Please refer to the attached Figure 1 To Attachment Figure 6 The present invention describes a pier structure for solving the underwater suction pile 21 foundation of a submarine pipeline.

[0021] This embodiment provides a trestle structure for solving the underwater suction pile foundation of a submarine pipeline, such as Figure 1 As shown, it comprises a trestle mechanism 1, both sides of which are provided with penetration structures 2, at least one of which is configured as a suction pile 21, and a negative pressure generator is provided inside the suction pile 21.

[0022] The trestle structure can fully protect the pipeline, and there are closed protection and open support, which is convenient for the staff to make multiple choices. It also has the advantages of short construction period, low construction difficulty, and wide application range. In addition, as a unique structural form, the suction pile 21 can effectively withstand huge horizontal and vertical loads and bending moments. In addition, the suction pile 21 foundation also has many significant advantages, such as saving investment costs, shortening the foundation installation period, and being reusable. The overall penetration depth can be adjusted by adjusting the internal negative pressure generator. It is suitable for a variety of geological units, covering silt, clay, silt and sand and other geological types.

[0023] It should be noted that the suction pile 21 can be designed and matched according to the actual soil data and landform height of the project. The suction pile 21 can effectively save space and provide a more flexible layout for pipeline routing planning; the suction pile 21 can reach the set mud penetration depth through negative pressure setting, effectively reducing the on-site piling operation time; the use of the suction pile 21 solution can effectively reduce the difficulty of on-site installation and improve the flexibility of on-site installation.

[0024] Furthermore, if Figure 1 and Figure 2 As shown, the penetration structure 2 further includes a column 22 , which is disposed on the suction pile 21 and is respectively connected to the suction pile 21 and the trestle mechanism 1 .

[0025] Furthermore, at least two columns 22 are provided.

[0026] Furthermore, at least four columns 22 are provided, and the end face of the suction pile 21 is set to be circular, and a first axis 231 and a second axis 232 intersecting at the center of the circle are provided thereon to divide the end face of the suction pile 21 into four areas, and at least one column 22 is provided in each area.

[0027] In this embodiment, Figure 2 As shown, four columns 22 are provided, and the first axis 231 and the second axis 232 are perpendicular, so that the end surface of the suction pile 21 is divided into four equal-sized fan-shaped areas, and the four columns 22 are respectively provided in the four fan-shaped areas.

[0028] Furthermore, if Figure 1 and Figure 3 As shown, in the vertical direction, the trestle mechanism 1 is located above the penetration structure 2 .

[0029] Furthermore, if Figure 1 and Figure 4 As shown, the trestle mechanism 1 includes an accommodating channel 100, which runs through both sides of the trestle mechanism 1 as a whole and is used to accommodate pipelines.

[0030] Furthermore, the trestle mechanism 1 includes at least three main beams 11 , and adjacent main beams 11 are connected via secondary beams 12 to enclose a receiving passage 100 .

[0031] Alternatively, if Figure 3-Figure 5 As shown, at least two main beams 11 are connected to the columns 22 .

[0032] Furthermore, a plurality of auxiliary beams 12 are provided, and the auxiliary beams 12 are provided at an angle to the main beam 11 .

[0033] Furthermore, if Figure 6As shown, the trestle mechanism 1 further includes a support beam 13 , which extends horizontally and protrudes from the main beam 11 frame. Pipelines not arranged in the accommodating channel 100 can be overlapped at the protruding end of the support beam 13 .

[0034] It should be noted that the trestle mechanism 1 can be designed to match the actual span of the project, including but not limited to the size specifications and cross-sectional dimensions of the support beam 13, and the hoisting of the entire structure can be achieved by connecting with the support beam 13.

[0035] Furthermore, the extended end of the support beam 13 is provided with an anti-dropout member 14, and the pipeline not arranged in the accommodating channel 100 is arranged between the anti-dropout member 14 and the support beam 13. The above-mentioned trestle structure realizes closed protection and open support of the pipeline by arranging the accommodating channel 100 and the anti-dropout member 14, which is convenient for the staff to make multiple choices.

[0036] It should be noted that the support beam 13 and the anti-slip member 14 can be designed according to the specific pipeline data of the actual operation project, including but not limited to the size, spacing, rod specifications, etc. of the supporting structure; the support beam 13 and the anti-slip member 14 can provide support for the constraint structure to limit the displacement of the pipeline; the support beam 13 and the anti-slip member 14 can also be directly connected to the lifting rope for use in structural lifting.

[0037] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A trestle structure for solving the underwater suction pile foundation of submarine pipelines, characterized in that: The invention comprises a trestle mechanism, both sides of which are provided with penetration structures, at least one of which is a suction pile, and a negative pressure generator is arranged inside the suction pile.

2. The trestle structure for solving the underwater suction pile foundation of the submarine pipeline according to claim 1 is characterized in that: The penetration structure also includes columns, which are arranged on the suction piles and are respectively connected to the suction piles and the trestle mechanism.

3. The trestle structure for solving the underwater suction pile foundation of the submarine pipeline according to claim 2 is characterized in that: At least two columns are provided.

4. The trestle structure for solving the underwater suction pile foundation of the submarine pipeline according to claim 2 is characterized in that: At least four columns are provided, and the end face of the suction pile is provided in a circular shape, on which a first axis and a second axis intersecting at the center of the circle are provided, so as to divide the end face of the suction pile into four areas, and at least one column is provided in each area.

5. The trestle structure for solving the underwater suction pile foundation of submarine pipelines according to claim 1 is characterized in that: In the vertical direction, the trestle mechanism is located above the penetration structure.

6. The trestle structure for solving the underwater suction pile foundation of submarine pipelines according to claim 1 is characterized in that: The trestle mechanism comprises an accommodating channel, which runs through both sides of the trestle mechanism as a whole and is used for accommodating pipelines.

7. The trestle structure for solving the underwater suction pile foundation of the submarine pipeline according to claim 6 is characterized in that: The trestle bridge mechanism comprises at least three main beams, and adjacent main beams are connected by auxiliary beams to enclose a receiving passage.

8. The trestle structure for solving the underwater suction pile foundation of the submarine pipeline according to claim 7 is characterized in that: A plurality of auxiliary beams are provided, and the auxiliary beams are arranged at an angle with the main beam.

9. The trestle structure for solving the underwater suction pile foundation of submarine pipelines according to claim 7 is characterized in that: The trestle mechanism also includes a support beam, which extends horizontally and protrudes from the main beam frame. The pipelines not arranged in the accommodating channel can be overlapped on the protruding end of the support beam.

10. The trestle structure for solving the underwater suction pile foundation of the submarine pipeline according to claim 9 is characterized in that: The protruding end of the support beam is provided with an anti-slip piece, and the pipeline not arranged in the accommodating channel is arranged between the anti-slip piece and the support beam.

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