Trestle structure for solving underwater driving pile foundation of subsea pipeline

Abstract

The trestle structure comprises a trestle mechanism, pile driving mechanisms are arranged on the two sides of the trestle mechanism, each pile driving mechanism comprises a pile driving part and a sleeve capable of being arranged on the outer side of the pile driving part in a sleeving mode, and the pile driving parts can stretch into the trestle structure from the pile driving position on the ground; and the sleeve is connected with the piling part through cement mortar. Through the arrangement of the sleeve and the piling part, the span specification can be effectively adjusted, the trestle structure is suitable for various obstacle sizes, in addition, the trestle structure can fully protect pipelines, 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. By adjusting the penetration depth of the driven pile, the device is suitable for various geological units and covers geological types such as sludge, clay, floury soil 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 problem of underwater pile foundation of submarine pipelines. Background Art

[0002] When submarine pipelines encounter uneven seabed topography or obstacles such as pipelines from previous projects during route layout, they generally need 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.

[0003] The existing pile driving structure usually has a guide frame composed of two guide rods in front of the pile frame to control the direction of piling so that the pile foundation can be accurately penetrated into the stratum according to the designed direction. The basic technical parameters of the pile driver are the weight of the impact part, the impact kinetic energy and the impact frequency, which can make the foundation of the building firm and drive wooden piles or stone piles into the ground. However, when the pile foundation is hammered, it is easy to cause the pile foundation to tilt. In order to ensure that the pile foundation can be driven vertically into the ground, it is necessary to repeatedly measure with measuring tools during the piling process, which reduces the efficiency of piling. In addition, due to the large vibration during the piling process, the pile driver is offset, affecting the accuracy of piling.

[0004] Therefore, it is urgent to design a trestle structure that can solve the underwater pile foundation of the submarine pipeline and solve the above-mentioned problems. Summary of the invention

[0005] In order to solve the technical problem mentioned in the background technology that the pile foundation is tilted and affects the pile driving accuracy, a pier structure for solving the underwater pile foundation of the submarine pipeline is provided to solve the above problem.

[0006] To achieve the above object, the specific technical solution of the trestle structure for solving the underwater pile foundation of the submarine pipeline of the present invention is as follows: A trestle structure for solving the problem of underwater pile foundation of submarine pipelines comprises a trestle mechanism. Pile driving mechanisms are arranged on both sides of the trestle mechanism. The pile driving mechanism comprises a pile driving part and a sleeve that can be sleeved on the outside of the pile driving part. The pile driving part can extend from a pile driving position on the ground. The sleeve and the pile driving part are connected by cement mortar.

[0007] Furthermore, the piling mechanism also includes an anti-sinking plate, on which a containing space for supporting the sleeve is provided, and the piling part can sequentially penetrate the sleeve and the anti-sinking plate to realize piling.

[0008] Furthermore, a plurality of supporting ribs are arranged on the anti-sinking plate, and the supporting ribs are connected to two sides of the peripheral frame of the anti-sinking plate, so as to improve the strength of the anti-sinking plate.

[0009] Further, the size of the inlet end of the sleeve is larger than the size of the outlet end.

[0010] Further, in the vertical direction, the trestle mechanism is located between the anti-sinking plate and the sleeve.

[0011] 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.

[0012] Furthermore, the trestle mechanism includes at least three main beams, and adjacent main beams are connected by auxiliary beams to enclose a accommodating channel.

[0013] Furthermore, a plurality of auxiliary beams are provided, and the auxiliary beams are arranged at an angle to the main beam.

[0014] 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.

[0015] 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.

[0016] The trestle structure for solving the underwater driven pile foundation of the submarine pipeline of the present invention has the following advantages: by arranging the sleeve and the pile driving part, the span specification can be effectively adjusted and it is suitable for various obstacle sizes. In addition, 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, wide application range, etc. In addition, by adjusting the penetration depth of the driven pile, it is suitable for various geological units, covering various geological types such as silt, clay, silt and sand. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of a trestle structure for solving the problem of underwater pile foundation for submarine pipelines according to the present invention; Figure 2 A top view of the anti-sinking plate of the present invention; Figure 3 This is a cross-sectional view of a trestle structure for solving the problem of underwater pile foundation for submarine pipelines according to the present invention; Figure 4 It is a cross-sectional view from another perspective of the trestle structure for solving the underwater pile foundation of the submarine pipeline of the present invention; Figure 5 This is a bottom cross-sectional view of a trestle structure for solving the problem of underwater pile foundation for submarine pipelines according to the present invention; Figure 6 It is a side view of the trestle mechanism of the present invention.

[0018] Description of the markings in the figure: 1. Trestle mechanism; 11. Main beam; 12. Secondary beam; 13. Support beam; 14. Anti-slip parts; 2. Pile driving mechanism; 21. Pile driving unit; 22. Sleeve; 23. Anti-sinking plate; 231. Support ribs; 100. Accommodation channel. DETAILED DESCRIPTION

[0019] 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.

[0020] 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.

[0021] Please refer to the attached Figure 1 To Attachment Figure 6 The invention describes a trestle structure for solving the problem of underwater pile foundation of submarine pipelines.

[0022] This embodiment provides a trestle structure for solving the problem of underwater pile foundation of submarine pipelines. Figure 1 As shown, it includes a trestle mechanism 1, and piling mechanisms 2 are arranged on both sides of the trestle mechanism 1. The piling mechanism 2 includes a piling portion 21 and a sleeve 22 that can be sleeved on the outside of the piling portion 21. The piling portion 21 can be extended from a piling position on the ground, and the sleeve 22 and the piling portion 21 are connected by cement mortar.

[0023] By setting the sleeve 22 and the piling part 21, the span specification can be effectively adjusted to be suitable for various obstacle sizes. In addition, the trestle structure can fully protect the pipeline, and there are closed protection and open support, which is convenient for the staff to make a variety of choices. It also has the advantages of short construction period, low construction difficulty, and wide application range. In addition, by adjusting the penetration depth of the driven piles, it is suitable for a variety of geological units, covering geological types such as silt, clay, silt and sand.

[0024] It should be noted that the piling part 21 can be driven in by various construction methods such as a pile hammer or a vibrating hammer, and is not restricted by a specific construction plan, thereby increasing the economy of the construction plan; the use of a pile driving plan can effectively reduce the difficulty of on-site installation and improve the flexibility of on-site installation.

[0025] Furthermore, if Figure 2As shown, the piling mechanism 2 further includes an anti-sinking plate 23 , on which an accommodation space for supporting the sleeve 22 is provided, and the piling portion 21 can sequentially penetrate the sleeve 22 and the anti-sinking plate 23 to achieve piling.

[0026] Furthermore, a plurality of support ribs 231 are provided on the anti-sinking plate 23 , and the support ribs 231 are connected to two sides of the peripheral frame of the anti-sinking plate 23 , so as to improve the strength of the anti-sinking plate 23 .

[0027] It should be noted that the piling part 21 and the anti-sinking plate 23 can be designed to match the actual soil data and landform height of the project, including the size of the anti-sinking plate 23, pipe diameter and other parameters; the setting of the piling part 21 and the anti-sinking plate 23 can effectively save occupied space and provide a more flexible layout plan for pipeline route planning; the anti-sinking plate 23 can provide reliable support for the construction of the steel pile structure and facilitate the pile driving construction; the piling part 21 and the anti-sinking plate 23 can be connected by grouting or by constraining with gap plates and other methods, which can be selected based on the comprehensive engineering costs.

[0028] Specifically, Figure 1 and Figure 3 As shown, the shape of the anti-sinking plate 23 is set to be a rectangle, and a plurality of support ribs 231 are arranged in parallel and spaced along the long side of the rectangle, and their two ends are respectively connected to the short sides of the rectangular anti-sinking plate 23, or a plurality of support ribs 231 are arranged in parallel and spaced along the short side, and their two ends are respectively connected to the long sides of the rectangular anti-sinking plate 23, thereby improving the overall strength of the anti-sinking plate 23. In addition, the shape of the anti-sinking plate 23 can also be a triangle, a rhombus, etc., which is not specifically limited here.

[0029] Optionally, when a plurality of support ribs 231 are arranged in parallel and spaced apart along the long sides of the rectangle, and both ends of the support ribs 231 are respectively connected to the short sides of the rectangular anti-sinking plate 23, an additional support rib 231 is arranged in parallel along the short sides of the rectangle, and penetrates the plurality of support ribs 231, thereby further improving the strength of the anti-sinking plate 23. It should be noted that the above arrangement is only for the purpose of arranging an additional support rib 231 to intersect with other support ribs 231, thereby achieving the purpose of improving the strength of the anti-sinking plate 23. If the position of the support rib 231 conflicts with the position of the piling portion 21, the support rib 231 can be divided into several parts, or the position of the support rib 231 can be moved, thereby achieving avoidance of the piling portion 21.

[0030] Furthermore, if Figure 1 As shown, the size of the inlet end of the sleeve 22 is larger than the size of the outlet end. In other words, any outlet of the sleeve 22 can be set as a bell mouth to facilitate the penetration and insertion of the pile driving part 21.

[0031] Furthermore, if Figure 2 As shown, in the vertical direction, the trestle mechanism 1 is located between the anti-sinking plate 23 and the sleeve 22 .

[0032] Furthermore, if Figure 1-Figure 5 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.

[0033] 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 .

[0034] Furthermore, a plurality of auxiliary beams 12 are provided, and the auxiliary beams 12 are provided at an angle to the main beam 11 .

[0035] Furthermore, if Figure 6 As 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 .

[0036] 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.

[0037] 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.

[0038] 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.

[0039] This embodiment also provides a piling method, comprising the following steps: 1. Determine the location of the pile and calculate the size of the pile and other parameters based on the actual soil data and topographic altimeter of the project; 2. Place the anti-sinking plate 23 and the sleeve 22 in sequence at the piling position; 3. Use a pile hammer or a vibrating hammer to sequentially penetrate the sleeve 22 and the anti-sinking plate 23 with the pile driving part 21 until it reaches a suitable depth; 4. Use cement mortar to fill the gaps between the sleeve 22, the anti-sinking plate 23 and the piling part 21, then assemble the trestle mechanism 1 and set the pipeline at a suitable position.

[0040] 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 problem of underwater pile foundation for submarine pipelines, characterized in that: It includes a trestle mechanism, and piling mechanisms are arranged on both sides of the trestle mechanism. The piling mechanism includes a piling part and a sleeve that can be sleeved on the outside of the piling part. The piling part can extend from a piling position on the ground, and the sleeve and the piling part are connected by cement mortar.

2. The trestle structure for solving the problem of underwater pile foundation for submarine pipelines according to claim 1 is characterized in that: The piling mechanism also includes an anti-sinking plate, on which an accommodating space for supporting the sleeve is provided, and the piling part can sequentially penetrate the sleeve and the anti-sinking plate to achieve piling.

3. The trestle structure for solving the problem of underwater pile foundation of submarine pipelines according to claim 2 is characterized in that: A plurality of supporting ribs are arranged on the anti-sinking plate, and the supporting ribs are connected to two sides of the peripheral frame of the anti-sinking plate to improve the strength of the anti-sinking plate.

4. The pier structure for solving the problem of underwater pile foundation for submarine pipelines according to claim 1 is characterized in that: The inlet end dimension of the sleeve is larger than the outlet end dimension.

5. The pier structure for solving the problem of underwater pile foundation for submarine pipelines according to claim 2 is characterized in that: In the vertical direction, the trestle mechanism is located between the anti-sinking plate and the sleeve.

6. The pier structure for solving the problem of underwater pile foundation for 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 problem of underwater pile foundation for submarine pipelines according to claim 6 is characterized in that: The trestle 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 problem of underwater pile foundation for submarine pipelines 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 pier structure for solving the problem of underwater pile foundation for submarine pipelines according to claim 7, 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 pier structure for solving the problem of underwater pile foundation for submarine pipelines according to claim 9, 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.

Images