Suction cylinder pile sinking guide structure for deep and far sea and pile sinking operation method of suction cylinder pile sinking guide structure

Abstract

The invention discloses a suction barrel pile sinking guide structure for a deep sea and a pile sinking operation method thereof. The structure comprises a top platform, a guide frame and a suction barrel group which are sequentially connected from top to bottom; a power control facility, an operation tool, a diesel generating set and an air compressor are arranged on the top platform; the guide frame comprises an upper guide frame body and a lower guide frame body, a plurality of submersible pumps are evenly distributed in the upper guide frame body in the circumferential direction, a plurality of guide cylinders are evenly distributed on the periphery of the lower guide frame body, and the submersible pumps communicate with the air compressor, the suction barrel and the outer side of the upper guide frame body through operation manifolds so as to control sinking and floating of the suction barrel pile sinking guide structure. According to the suction barrel pile sinking guide structure for the deep and far sea and the pile sinking operation method of the suction barrel pile sinking guide structure, the posture of the guide frame can be adjusted by adjusting valve pipelines of different submersible pumps in the whole sinking process, meanwhile, the problem that the construction efficiency of the pile sinking guide frame is low is solved, and the construction efficiency and progress are improved; and the offshore wind power construction efficiency and quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power construction, and in particular to a suction tube pile sinking guide structure for deep sea and a pile sinking operation method thereof. Background Art

[0002] In the construction of offshore wind power in the deep sea, the pile sinking operation of wind turbine foundation piles faces many challenges, including: 1) Limited pile sinking accuracy: The traditional guide frame lacks precise adjustment and positioning means when positioning engineering piles, and has limited detection and adjustment capabilities for the verticality of the pile body; 2) Poor stability: The design of the traditional guide frame does not fully consider the stress conditions in the harsh environment of the deep sea. Under complex marine dynamic conditions such as strong winds, large waves and water flow impacts, its structure is prone to large deformation. Due to unreasonable weight distribution or insufficient foundation fixing, the traditional guide frame is prone to overturning when subjected to large external forces; 3) Low construction efficiency: The installation and disassembly process of the traditional guide frame is usually cumbersome. When installed at sea, it is affected by waves and sea winds, and the operation is difficult, resulting in a long installation period. During the pile sinking process, if the height or level of the guide frame needs to be adjusted, multiple manual measurements and complex mechanical operations are required, which is inefficient and difficult to ensure accuracy. Therefore, based on the above-mentioned existing technical problems, it is necessary to design a suction tube pile sinking guide structure for deep sea and a corresponding pile sinking operation method. Summary of the invention

[0003] The object of the present invention is to provide a suction cylinder pile sinking guide structure for deep sea that solves the above technical problems.

[0004] Another object of the present invention is to provide a pile sinking method using the above suction cylinder pile sinking guide structure for deep sea.

[0005] To this end, the technical solution of the present invention is as follows:

[0006] A suction cylinder pile sinking guide structure for deep sea, comprising a top platform, a guide frame and a suction cylinder group connected in sequence from top to bottom; the guide frame comprises an upper guide frame, a lower guide frame, a guide cylinder group and a submersible pump group; wherein,

[0007] The top platform includes a horizontally arranged platform, on the top surface of which power control facilities, working tools, diesel generator sets and air compressors are arranged at intervals along the circumference; the power control facilities, air compressors and submersible pump sets are electrically connected to the diesel generator sets respectively;

[0008] The upper guide frame includes N first guide frame legs, which are evenly distributed along the circumferential direction with the top ends obliquely facing inwards, and the top ends of the first guide frame legs are fixed to the bottom surface of the platform along the circumference of the top platform;

[0009] The lower guide frame includes N vertically arranged second guide frame legs, the top ends of which are fixed to the bottom ends of the first guide frame legs one by one; a plurality of second cross braces are connected and fixed in sequence from top to bottom between every two adjacent second guide frame legs, and a guide cylinder mounting frame is formed by extending outwardly in the horizontal direction from the middle of the two second cross braces located in the middle position;

[0010] The guide cylinder group includes N guide cylinders, which are respectively and vertically arranged in each guide cylinder mounting frame in a one-to-one correspondence and adapted to the preset pile sinking positions;

[0011] The submersible pump group is composed of N submersible pumps, which are respectively arranged at N second guide frame legs;

[0012] A connected pipe cavity is provided in each connected first guide frame leg and second guide frame leg, and a sealing plate for a submersible pump is horizontally fixed in the first guide frame leg, a suction cylinder connection port K3 is provided on the sealing plate, and an external connection port K4 is provided on the pipe wall; the top of the suction cylinder connection port K3 extends to the top platform through the first delivery pipeline, so as to be connected to the air outlet K6 of the air compressor or directly communicate with the atmosphere; the bottom of the suction cylinder connection port K3 is connected to the connection port K5 on the suction cylinder below through the second delivery pipeline; the water inlet end K1 of the submersible pump is connected to the suction cylinder connection port K3 and the external connection port K4 through the third delivery pipeline and the fourth delivery pipeline respectively; the water outlet end K2 of the submersible pump is connected to the suction cylinder connection port K3 and the external connection port K4 through the fifth delivery pipeline and the sixth delivery pipeline respectively; an electrically controlled valve is provided on each delivery pipeline, and each electrically controlled valve is electrically connected to the power control facility respectively.

[0013] In the above suction cylinder pile sinking guide structure for deep sea, the value of N is adapted to the appropriate number of guide cylinders arranged around the lower guide frame in actual construction operations, N is a positive integer, and N≥3.

[0014] Furthermore, four lifting ears are evenly distributed along the circumferential direction at the edge of the top surface of the top platform.

[0015] Furthermore, on the top surface of the top platform, a safety fence is arranged along the circumferential edge of the platform, and a plurality of life-saving facilities and a plurality of lighting facilities are installed on the safety fence.

[0016] Furthermore, in the upper guide frame, at least one first cross brace is arranged between every two adjacent first guide frame legs, and two first diagonal braces are cross-arranged on the upper and lower sides of each first cross brace, and the two first diagonal braces are cross-fixed and their two ends are respectively fixed on the two first guide frame legs.

[0017] Furthermore, on the lower guide frame, the guide cylinder mounting frame includes two support beams vertically and fixed at intervals on each second cross brace, and in the two guide cylinder mounting frames arranged upper and lower, a plurality of vertical braces and / or two cross-arranged diagonal braces are vertically fixed at intervals between each two support beams arranged upper and lower; a plurality of second diagonal braces are respectively connected and fixed between the top end of each second guide frame leg and the two ends of the support beam of the adjacent side guide cylinder mounting frame, between the middle part of each second guide frame leg and the two ends of the support beam of the adjacent side guide cylinder mounting frame, and between the bottom end of each second guide frame leg and the two ends of the support beam of the adjacent side guide cylinder mounting frame.

[0018] Furthermore, the lower guide frame also includes a reinforcement beam group; the reinforcement beam group is composed of a plurality of horizontally arranged reinforcement beams, which are respectively connected and fixed between every two adjacent second cross braces, between every adjacent support beam and the second cross brace, and between every two adjacent support beams.

[0019] Furthermore, the guide cylinder includes a cylindrical cylinder section and a conical cylinder section extending outward from the top of the cylindrical cylinder section along the axis to form an inner diameter gradually increasing from bottom to top; a plurality of limiting mechanisms are respectively arranged along the circumferential direction on the top side wall and the bottom side wall of the cylindrical cylinder section, and the plurality of limiting mechanisms are adjusted by their lengths in the cylindrical cylinder section to radially limit the engineering piles inserted in the guide cylinder.

[0020] Furthermore, the sealing plate divides the inner cavity of the first guide frame leg into an upper chamber and a lower chamber, and the bottom of the upper chamber is divided into a submersible pump installation cavity and a manifold setting cavity by an isolation plate vertically fixed to the top surface of the sealing plate and the inner walls on both sides of the tube body, so that the submersible pump is built into the submersible pump installation cavity and fixed to the sealing plate through the pier; a cooling water pipe is arranged in the submersible pump installation cavity, one end of the cooling water pipe is located at the bottom of the submersible pump installation cavity, and the other end extends to the top platform for connection with a small pump arranged on the top platform; the suction cylinder connection port K3 and the external connection port K4 are respectively arranged on the sealing plate and the pipe wall in the manifold setting cavity.

[0021] Furthermore, the suction cylinder group is composed of N suction cylinders, which are respectively arranged under each second guide frame leg, so that the bottom end of the second guide frame leg is vertically fixed at the center of the top surface of each suction cylinder.

[0022] A pile sinking operation method using the above suction cylinder pile sinking guide structure for deep sea, the steps are as follows:

[0023] S1. Customize the suction cylinder pile sinking guide structure according to the number of engineering piles forming the pile foundation and the preset spacing between the engineering piles, and complete the assembly and connection in the prefabrication factory or on land at the construction site;

[0024] S2. Use large transport vessels to transport the assembled suction cylinder pile sinking guide structure to the designated deep-sea operation area;

[0025] S3. Use a crane ship to hoist the suction cylinder pile sinking guide structure to the designated position and lower it into the water; open the electric control valves on the first and second delivery pipelines in each first guide frame leg through the power control facility, and keep the electric control valves on the other pipelines closed, so that the suction cylinder pile sinking guide structure gradually sinks to the seabed by its own weight until it reaches a stable state; then, open the electric control valves on the second, third and sixth delivery pipelines in each first guide frame leg through the power control facility, and keep the electric control valves on the other pipelines closed, start the submersible pump, extract the water in the suction cylinder and discharge it into the seawater, so that the suction cylinder pile sinking guide structure continues to sink under the action of negative pressure until it sinks to the designated depth position;

[0026] S4. Level the suction cylinder pile sinking guide structure according to the diameter and root opening requirements of the engineering pile, and adjust the limit mechanisms on the upper and lower sides of the guide cylinder to make it compatible with the outer diameter of the engineering pile and the pile sinking position; accurately insert the engineering pile into the limit cylinder through the pile driver, and use the pile driving equipment to carry out the pile sinking operation;

[0027] S5. After the pile sinking is completed, the crane ship is hoisted and connected to the suction cylinder pile sinking guide structure again; the electric control valves on the second conveying pipeline, the fourth conveying pipeline and the fifth conveying pipeline in each first guide frame leg are opened through the power control facility, and the electric control valves on the other pipelines remain closed, so that the suction cylinder is filled with water to drive the suction cylinder pile sinking guide structure to float; then, the electric control facility is used to open the electric control valves on the first conveying pipeline and the second conveying pipeline in each first guide frame leg, and the electric control valves on the other pipelines remain closed; the other end of each first conveying pipeline is connected to the air outlet end of the air compressor, and while the air compressor is turned on to fill the suction cylinder with air and drain water, the suction cylinder pile sinking guide structure is slowly lifted off the sea surface by the crane ship, and placed on a transport ship and transported back to land.

[0028] Compared with the existing pile driving guide frames, the suction cylinder pile driving guide structure and pile driving operation method for deep sea can not only adjust the posture of the guide frame by adjusting the valve pipelines of different submersible pumps during the entire sinking process, but also solve the problem of low construction efficiency of the pile driving guide frame. The pile driving guide frame can be sunk into place in only three hours through the self-sinking of the pile driving frame and the sinking of the submersible pump, which greatly improves the construction efficiency and progress, and effectively improves the efficiency and quality of offshore wind power construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a suction cylinder pile sinking guide structure used in deep sea in an embodiment of the present invention;

[0030] Figure 2It is a top view of the top platform of the suction cylinder pile sinking guide structure used in deep sea in an embodiment of the present invention;

[0031] Figure 3 It is a top view of a lower guide frame of a suction cylinder pile sinking guide structure for deep sea use in an embodiment of the present invention;

[0032] Figure 4 It is a schematic diagram of the internal structure of the built-in submersible pump part of the first guide frame leg of the suction cylinder pile driving guide structure for deep sea in an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the following embodiments are by no means intended to limit the present invention in any way.

[0034] See also Figure 1 The suction cylinder pile sinking guide structure for deep sea includes a top platform 1, a guide frame and a suction cylinder group which are sequentially connected from top to bottom.

[0035] See also Figure 2 The top platform 1 includes a horizontally arranged rectangular platform, and the four edges of the top surface are respectively provided with a first container 9 with built-in power control facilities, a second container 10 with built-in working tools, a third container 11 with built-in diesel generator sets, and a fourth container 12 with built-in air compressors; wherein the diesel generator sets are electrically connected to the power control facilities and the air compressors respectively to supply power respectively; the air compressor is used to pump compressed air; the first container 9 serves as a control room, and its built-in power control facilities are electrically connected to the electric control valves or electric control devices arranged on the manifold in the guide frame below through lines, so as to control the opening and closing of each electric control valve during the operation, thereby completing the pile sinking operation; the working tools arranged in the second container 10 include but are not limited to small pumps, maintenance tools, different pipelines that can be used for replacement, etc.

[0036] As a preferred technical solution of this embodiment, a lifting lug 8 is provided at each of the four top corners of the top surface of the top platform 1 for lifting the structure as a whole.

[0037] As another preferred technical solution of this embodiment, in order to ensure the operational safety of the top platform, a safety fence is provided on the top surface of the top platform 1 and around the circumferential edge of the platform, and a plurality of life-saving facilities and a plurality of lighting facilities are installed on the safety fence.

[0038] In actual applications, the top platform with an integrated functional structure can be connected to the guide frame by various means such as welding, bolts or pins, which not only facilitates the convenient installation of the suction cylinder pile sinking guide structure, but also has the advantage of being directly disassembled and hoisted away when the weather conditions are bad or the waves are large.

[0039] See also Figure 1 and Figure 3 The guide frame includes an upper guide frame 2, a lower guide frame 3, a guide cylinder group and a submersible pump group.

[0040] The upper guide frame 2 includes four first guide frame legs 201 and four first cross braces 202; wherein, the four first guide frame legs 201 are evenly distributed along the circumferential direction with the top ends obliquely facing inward, and the top ends of the four first guide frame legs 201 are fixed at the four top corners of the bottom surface of the top platform 1; the four first cross braces 202 are respectively horizontally arranged and fixed in the middle of every two adjacent first guide frame legs 201; two first oblique braces 203 are also cross-arranged between the two first guide frame legs 201 located above and below each first cross brace 202, and the middle parts of the two first oblique braces 203 are cross-fixed, and the two ends of the two are respectively fixed on the two first guide frame legs 201.

[0041] In this embodiment, the first guide frame leg 201, the first cross brace 202 and the first diagonal brace 203 are all made of high-strength alloy steel pipes to ensure that the overall strength and toughness of the guide frame can withstand the impact of sea waves; and the first cross brace 202 and the first diagonal brace 203 are arranged in the concentrated force-bearing area of ​​the upper guide frame 2 to strengthen the structure, which has the effect of dispersing the impact of surge waves and sea water pressure and avoiding local deformation in actual applications.

[0042] The lower guide frame 3 includes four second guide frame legs 301, which are evenly distributed in the circumferential direction in a vertical arrangement, and the top ends of the four second guide frame legs 301 are fixed to the bottom ends of the four first guide frame legs 201 through flange connections; four second cross braces 302 are connected and fixed in sequence from top to bottom between every two second guide frame legs 301, and a guide tube mounting frame is horizontally extended outward from the middle of the two second cross braces 302 located in the middle position to form a guide tube mounting frame; a plurality of second oblique braces 304 are also arranged on the lower guide frame 3, which are respectively connected and fixed between the top end of each second guide frame leg 301 and the two ends of the support beam 303 of the adjacent side guide tube mounting frame, between the middle part of each second guide frame leg 301 and the two ends of the support beam 303 of the adjacent side guide tube mounting frame, and between the bottom end of each second guide frame leg 301 and the two ends of the support beam 303 of the adjacent side guide tube mounting frame.

[0043] In this embodiment, the guide cylinder mounting frame includes two support beams 303 that are spaced apart and vertically fixed on the second cross brace 302, and the spacing between the two support beams 303 is adapted to the diameter of the guide cylinder 6; in the two guide cylinder mounting frames arranged upper and lower, a plurality of vertical supports and / or two cross-arranged diagonal supports are vertically fixed between each two support beams 303 arranged upper and lower to enhance the structural support strength between the two guide cylinder mounting frames.

[0044] As a preferred technical solution of this embodiment, the lower guide frame 3 also includes a reinforcement beam group; the reinforcement beam group is composed of a plurality of horizontally arranged reinforcement beams 305, which are respectively arranged and connected and fixed between two adjacent second cross braces 302, between adjacent support beams 303 and second cross braces 302, and between two adjacent support beams 303; and each reinforcement beam 305 is arranged at intervals on the inner side of second diagonal braces 304 that are equal in height and parallel.

[0045] Similarly, in this embodiment, the second guide frame legs 301, the second cross brace 302 and the second diagonal brace 303 are all made of high-strength alloy steel pipes to ensure that the overall strength and toughness of the guide frame can withstand the impact of sea waves; and the second cross brace 302 and the second diagonal brace 303 are arranged in the concentrated force-bearing area of ​​the upper guide frame 2 to strengthen the structure, which has the effect of dispersing the impact of surge waves and seawater pressure and avoiding local deformation in actual applications.

[0046] The guide cylinder group includes four guide cylinders 6, which are vertically arranged in each guide cylinder mounting frame in a one-to-one correspondence; specifically, the guide cylinder 6 includes a cylindrical cylinder section, whose inner diameter is adapted to the outer diameter of the pile body to be sunk; a conical cylinder section is formed extending outward from the top of the cylindrical cylinder section along the axis, and the inner diameter gradually increases from bottom to top, so as to guide the pile body lowered and inserted into the guide cylinder 6; eight limiting mechanisms are respectively arranged along the circumferential direction on the top side wall and the bottom side wall of the cylindrical cylinder section, and the eight limiting mechanisms achieve the role of limiting the diameter of the engineering piles inserted in the guide cylinder 6 by adjusting their lengths in the cylindrical cylinder section; a plurality of connecting parts are respectively extended in the horizontal direction from both sides of the top outer wall and the bottom outer wall of the cylindrical cylinder section and are arranged at intervals, so that the guide cylinder 6 is erected and fixed on the support beams 303 on each side of the two guide cylinder mounting frames arranged upper and lower through the multiple connecting parts on its top side and the connecting parts on its bottom side.

[0047] In this embodiment, the limiting mechanism can be an electric push rod, which is arranged in such a way that the movable push rod faces the axial direction of the cylindrical barrel section, and its cylinder is vertically penetrated and fixed in a radial installation through hole opened on the side wall of the cylindrical barrel section. The electric push rod is electrically connected to the power control facility in the first container 9 through a line, so that the extension length of the movable push rod of the electric push rod can be adjusted through the power control facility, thereby realizing the limitation of the pile body inserted in the guide cylinder 6, ensuring that the pile body maintains a vertical setting state to complete the pile sinking;

[0048] In the guide frame, the first guide frame leg 201 and the second guide frame leg 301 are both made of a tube body with a sufficient inner cavity size to arrange the operation facilities and the operation manifold therein; specifically, see Figure 1 and Figure 4 ,

[0049] A sealing plate 2011 is horizontally fixed in the middle of the tube body of each first guide frame leg 201 to separate the inner cavity of each first guide frame leg 201 into an upper chamber and a lower chamber, and the bottom of the upper chamber is further divided into a submersible pump installation chamber and a manifold setting chamber by an isolation plate 2012 vertically fixed on the top surface of the sealing plate 2011 and the inner walls on both sides of the tube body, so that in actual application, the submersible pump installation chamber can contain water, while the manifold setting chamber is always kept dry, which is more conducive to setting connecting pipelines and valves for controlling the opening and closing of pipelines; a cooling water pipe is arranged in the submersible pump installation chamber, one end of the cooling water pipe is located in the submersible pump installation chamber, and the other end extends to the top platform 1, so as to be connected to the submersible pump installation chamber set on the top platform 1. In the actual construction process, the small pump is first used to pump seawater into the submersible pump installation cavity through the cooling water pipe, so that the submersible pump 5 is immersed in water to be cooled during operation; and then after the construction is completed, the small pump is used to drain all the seawater in the submersible pump installation cavity through the cooling water pipe, waiting for the next operation; in the manifold setting cavity, a suction cylinder connection port K3 connecting the manifold setting cavity and the lower chamber is provided on the sealing plate, and an external connection port K4 connecting the manifold setting cavity and the outside of the first guide frame leg 201 is provided on the pipe wall; a ladder 2013 is provided on the inner wall on the opposite side of each first guide frame leg 201 to facilitate regular maintenance or repair of the above facilities;

[0050] The submersible pump group is composed of four submersible pumps 5, which are respectively arranged in the submersible pump installation chambers of the four first guide frame legs 201, and are specifically fixed on the top surface of the sealing plate of the left chamber through piers; wherein each submersible pump 5 is preferably arranged at a height of 42m from the bottom end of the second guide frame leg 301; the submersible pump located in each submersible pump installation chamber is respectively provided with a water inlet end K1 and a water outlet end K2;

[0051] In the tube body of each first guide frame leg 201, the top end of the suction cylinder connection port K3 extends to the top platform 1 through the first delivery pipeline, so as to be connected to the air outlet K6 of the air compressor or directly communicated with the atmosphere, and the bottom end of the suction cylinder connection port K3 is connected to the connection port K5 on the suction cylinder below through the second delivery pipeline; the water inlet end K1 of the submersible pump is connected to the suction cylinder connection port K3 and the external connection port K4 through the third delivery pipeline and the fourth delivery pipeline respectively; the water outlet end K2 of the submersible pump is connected to the suction cylinder connection port K3 and the external connection port K4 through the fifth delivery pipeline and the sixth delivery pipeline respectively; an electrically controlled valve is arranged on each delivery pipeline, and each electrically controlled valve is electrically connected to the power control facility through a line.

[0052] The suction cylinder group is composed of four suction cylinders 7, which are respectively arranged below the four second guide frame legs 302, and the bottom end of each second guide frame leg 302 is vertically fixed to the center of the top surface of the cover plate of the suction cylinder 7 below it to connect and fix the suction cylinder group to the bottom of the guide frame.

[0053] See also Figure 4 The specific implementation steps of the foundation pile sinking construction process using the suction cylinder pile sinking guide frame cylinder foundation structure are as follows:

[0054] S1. Customize and install suction tube pile guide structure:

[0055] According to the design requirements of the number of engineering piles forming the pile foundation in the construction work requirements, a suction cylinder pile sinking guide structure with four guide cylinders 6 is customized, and the spacing between the guide cylinders 6 is adapted to the preset spacing between the engineering piles; the components are assembled and connected in the prefabrication factory or on land at the construction site, and the entire steel structure is treated with anti-corrosion, and rust removal and painting operations are carried out according to the coating scheme;

[0056] S2. Use large transport vessels to transport the assembled suction cylinder pile sinking guide structure to the designated deep-sea operation area; during the transportation process, the suction cylinder pile sinking guide structure is fixed and protected to prevent damage caused by factors such as wave impact;

[0057] S3. Lowering the suction cylinder pile sinking guide structure:

[0058] After the suction cylinder pile sinking guide structure is transported to the designated operating sea area, it is hoisted to the designated position by a crane ship and lowered into the water; at the same time, the electric control valves on the first conveying pipeline and the second conveying pipeline in each first guide frame leg are opened through the power control facility, and the electric control valves on the other pipelines are closed, so that the suction cylinder pile sinking guide structure gradually sinks to the seabed by its own weight until it reaches a stable state; in this process, the air in each suction cylinder is discharged into the atmosphere through the second conveying pipeline and the first conveying pipeline connected thereto in turn;

[0059] When the suction cylinder pile sinking guide structure sinks to the seabed by its own weight and is in a stable state, the electric control valves on the second delivery pipeline, the third delivery pipeline and the sixth delivery pipeline in each first guide frame leg are opened through the power control facility, and the electric control valves on the other pipelines are closed, and the submersible pump is started at the same time to extract the water in the suction cylinder through the submersible pump, and finally discharge it into the seawater through the external connection port K4, so that the suction cylinder pile sinking guide structure continues to sink under the action of negative pressure until it sinks to the specified depth position;

[0060] S4. Pile sinking operation:

[0061] According to the diameter and root opening requirements of the engineering pile, after the suction cylinder pile sinking guide structure is leveled, adjust the elongation length of the limit mechanism on the upper and lower sides of the guide cylinder in the limit cylinder to make it compatible with the outer diameter of the engineering pile and the pile sinking position; accurately insert the engineering pile into the limit cylinder through the pile driver, and then use the pile driving equipment to carry out the pile sinking operation; during the pile sinking process, each limit cylinder provides precise guidance for the engineering pile, ensuring that the engineering pile sinks to the predetermined depth of the seabed according to the design requirements, and ensuring the pile sinking accuracy;

[0062] S3. Post-processing of pile sinking operation:

[0063] After the pile sinking is completed, the crane ship is used to hoist and connect with the suction cylinder pile sinking guide structure again, and the electric control valves on the second conveying pipeline, the fourth conveying pipeline and the fifth conveying pipeline in each first guide frame leg are opened through the power control facility, and the electric control valves on the other pipelines remain closed. At the same time, the submersible pump is started to inject external seawater into the suction cylinder through the external connection port K4 through the submersible pump, so that the inner cavity of each suction cylinder drives the suction cylinder pile sinking guide structure to gradually float up through the water injection;

[0064] When the suction cylinder pile sinking guide structure floats to a stable state, the electric control valves on the first and second conveying pipelines in each first guide frame leg are opened through the power control facility, and the electric control valves on the other pipelines remain closed to connect the other end of each first conveying pipeline with the air outlet K6 of the air compressor. While the air compressor is turned on to inject air and drain the suction cylinder, the suction cylinder pile sinking guide structure is slowly lifted from the sea surface by a crane ship, placed on a transport ship and transported back to land, where it is maintained, inspected or stored in preparation for the next use.

Claims

1. A suction tube pile sinking guide structure for deep sea, characterized in that: The invention comprises a top platform (1), a guide frame and a suction cylinder group connected in sequence from top to bottom; the guide frame comprises an upper guide frame (2), a lower guide frame (3), a guide cylinder group and a submersible pump group; wherein the top platform (1) comprises a horizontally arranged platform body, on the top surface of which power control facilities, working tools, a diesel generator set and an air compressor are arranged at intervals along the circumferential direction; the power control facilities, the air compressor and the submersible pump group are electrically connected to the diesel generator set respectively; the upper guide frame (2) comprises N first guide frame legs (201), which are evenly distributed along the circumferential direction with the top end inclined inwards, and each The top end of the first guide frame leg (201) is fixed to the bottom surface of the platform body along the circumference of the top platform (1); the lower guide frame (3) includes N vertically arranged second guide frame legs (301), the top ends of which are fixed to the bottom ends of the first guide frame legs (201) one by one; a plurality of second cross braces (302) are connected and fixed in sequence from top to bottom between every two adjacent second guide frame legs (301), and a guide cylinder mounting frame is formed by extending outward in the horizontal direction from the middle of the two second cross braces (302) located in the middle position; the guide cylinder group includes N guide cylinders (6), which are respectively and vertically arranged in each guide cylinder mounting frame in a one-to-one correspondence and adapted to the preset pile sinking position; the submersible pump group is composed of N submersible pumps (5); each of the first guide frame legs (201) and the second guide frame legs (301) connected to each other is provided with a connected pipe cavity, and a sealing plate for setting the submersible pump (5) is horizontally fixed in the first guide frame leg (201), the sealing plate is provided with a suction cylinder connection port K3, and the pipe wall is provided with an external connection port K4; the top end of the suction cylinder connection port K3 extends to the top platform (1) through the first conveying pipeline, so as to be used for It is connected to the air outlet K6 of the air compressor or directly communicated with the atmosphere; the bottom end of the suction cylinder connection port K3 is connected to the connection port K5 on the suction cylinder below through the second delivery pipeline; the water inlet K1 of the submersible pump is connected to the suction cylinder connection port K3 and the external connection port K4 through the third delivery pipeline and the fourth delivery pipeline respectively; the water outlet K2 of the submersible pump is connected to the suction cylinder connection port K3 and the external connection port K4 through the fifth delivery pipeline and the sixth delivery pipeline respectively; an electrically controlled valve is arranged on each delivery pipeline, and each electrically controlled valve is electrically connected to the power control facility respectively.

2. The suction cylinder pile sinking guide structure for deep sea according to claim 1 is characterized in that: Four lifting ears (8) are evenly distributed along the circumferential direction at the edge of the top surface of the top platform (1).

3. The suction cylinder pile sinking guide structure for deep sea according to claim 1 is characterized in that: On the top surface of the platform body of the top platform (1), a safety fence is arranged around the circumferential edge of the platform body, and a plurality of life-saving facilities and a plurality of lighting facilities are installed on the safety fence.

4. The suction cylinder pile sinking guide structure for deep sea according to claim 1 is characterized in that: In the upper guide frame (2), at least one first cross brace (202) is arranged between every two adjacent first guide frame legs (201), and two first diagonal braces (203) are cross-arranged on the upper and lower sides of each first cross brace (202); the two first diagonal braces (203) are cross-fixed, and their two ends are respectively fixed to the two first guide frame legs (201).

5. The suction cylinder pile sinking guide structure for deep sea according to claim 1 is characterized in that: On the lower guide frame (3), the guide cylinder mounting frame comprises two support beams (303) vertically and fixed at intervals on each second cross brace (302), and in the two guide cylinder mounting frames arranged in upper and lower positions, a plurality of vertical braces and / or two cross-arranged diagonal braces are vertically fixed at intervals between each two support beams (303) arranged in upper and lower positions; a plurality of second diagonal braces (304) are respectively connected and fixed between the top end of each second guide frame leg (301) and the two ends of the support beam (303) of the adjacent side guide cylinder mounting frame, between the middle part of each second guide frame leg (301) and the two ends of the support beam (303) of the adjacent side guide cylinder mounting frame, and between the bottom end of each second guide frame leg (301) and the two ends of the support beam (303) of the adjacent side guide cylinder mounting frame.

6. The suction cylinder pile sinking guide structure for deep sea according to claim 5 is characterized in that: The lower guide frame (3) also includes a reinforcement beam group; the reinforcement beam group is composed of a plurality of horizontally arranged reinforcement beams (305), which are respectively connected and fixed between each two adjacent second cross braces (302), between each adjacent support beam (303) and the second cross brace (302), and between each two adjacent support beams (303).

7. The suction cylinder pile sinking guide structure for deep sea according to claim 1 is characterized in that: The guide cylinder (6) comprises a cylindrical cylinder section and a tapered cylinder section extending outwardly from the top of the cylindrical cylinder section along the axis and having an inner diameter gradually increasing from bottom to top; a plurality of limiting mechanisms are respectively arranged along the circumferential direction on the top end side wall and the bottom end side wall of the cylindrical cylinder section, and the plurality of limiting mechanisms are used to radially limit the engineering piles inserted in the guide cylinder (6) by adjusting their lengths in the cylindrical cylinder section.

8. The suction cylinder pile sinking guide structure for deep sea according to claim 1, characterized in that: The sealing plate divides the inner cavity of the first guide frame leg (401) into an upper cavity and a lower cavity, and the bottom of the upper cavity is divided into a submersible pump installation cavity and a manifold setting cavity by an isolation plate vertically fixed to the top surface of the sealing plate and the inner walls on both sides of the tube body, so that the submersible pump (5) is built into the submersible pump installation cavity and fixed to the sealing plate through a pier; a cooling water pipe is arranged in the submersible pump installation cavity, one end of the cooling water pipe is located at the bottom of the submersible pump installation cavity, and the other end extends to the top platform (1) for connection with a small pump arranged on the top platform (1); the suction cylinder connection port K3 and the external connection port K4 are respectively arranged on the sealing plate and the pipe wall in the manifold setting cavity.

9. The suction cylinder pile sinking guide structure for deep sea according to claim 1, characterized in that: The suction cylinder group is composed of N suction cylinders (7), which are respectively arranged below each second guide frame leg (301), so that the bottom end of the second guide frame leg (301) is vertically fixed at the center of the top surface of each suction cylinder (7).

10. A pile sinking method using the deep sea suction cylinder pile sinking guide structure as claimed in any one of claims 1 to 9, characterized in that: Here are the steps: S1. Customize the suction cylinder pile sinking guide structure according to the number of engineering piles forming the pile foundation and the preset spacing between the engineering piles, and complete the assembly and connection in the prefabrication factory or on land at the construction site; S2. Use large transport vessels to transport the assembled suction cylinder pile sinking guide structure to the designated deep-sea operation area; S3. Use a crane ship to hoist the suction cylinder pile sinking guide structure to the designated position and lower it into the water; open the electric control valves on the first and second delivery pipelines in each first guide frame leg through the power control facility, and keep the electric control valves on the other pipelines closed, so that the suction cylinder pile sinking guide structure gradually sinks to the seabed by its own weight until it reaches a stable state; then, open the electric control valves on the second, third and sixth delivery pipelines in each first guide frame leg through the power control facility, and keep the electric control valves on the other pipelines closed, start the submersible pump, extract the water in the suction cylinder and discharge it into the seawater, so that the suction cylinder pile sinking guide structure continues to sink under the action of negative pressure until it sinks to the designated depth position; S4. Level the suction cylinder pile sinking guide structure according to the diameter and root opening requirements of the engineering pile, and adjust the limit mechanisms on the upper and lower sides of the guide cylinder to make it compatible with the outer diameter of the engineering pile and the pile sinking position; accurately insert the engineering pile into the limit cylinder through the pile driver, and use the pile driving equipment to carry out the pile sinking operation; S5. After the pile sinking is completed, the crane ship is hoisted and connected to the suction cylinder pile sinking guide structure again; the electric control valves on the second conveying pipeline, the fourth conveying pipeline and the fifth conveying pipeline in each first guide frame leg are opened through the power control facility, and the electric control valves on the other pipelines remain closed, so that the suction cylinder is filled with water to drive the suction cylinder pile sinking guide structure to float; then, the electric control facility is used to open the electric control valves on the first conveying pipeline and the second conveying pipeline in each first guide frame leg, and the electric control valves on the other pipelines remain closed; the other end of each first conveying pipeline is connected to the air outlet end of the air compressor, and while the air compressor is turned on to fill the suction cylinder with air and drain water, the suction cylinder pile sinking guide structure is slowly lifted off the sea surface by the crane ship, and placed on a transport ship and transported back to land.

Images