Offshore large structure jacket foundation structure

Abstract

The invention relates to the technical field of jackets, and discloses an offshore large structure jacket foundation structure which comprises an insertion block, and the outer surface of the insertion block is movably sleeved with a foundation pile. According to the offshore large structure jacket foundation structure, through structural cooperation of the rotating block, the moving block and the like, the problem that in the prior art, a jacket and a foundation pile are difficult to assemble is effectively solved, the air cylinder is used for driving the lifting block, the connecting rod drives the rotating block to be unfolded and embedded into the foundation pile, and meanwhile the rotating block is locked through cooperation with the moving block; compared with traditional welding and bolt connection, the rapid inserting and assembling structure has the advantages that the installation process is greatly simplified, the construction efficiency is remarkably improved, the offshore operation time is shortened, and the influence of the severe marine environment on construction is reduced; locking can be easily unlocked only by reversely operating the air cylinder and the threaded sleeve, the problem that in a traditional connecting mode, disassembly is difficult due to bolt corrosion is solved, and the later operation and maintenance cost is remarkably reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of jackets, and more particularly to a jacket foundation structure for a large offshore structure. Background Art

[0002] In the field of marine engineering, the jacket foundation structure of large offshore structures such as offshore wind power platforms and offshore oil and gas production platforms, as a key component connecting the superstructure with the seabed foundation, plays a decisive role in the stability and safety of the structure. The connection and assembly of the jacket and the foundation piles are important links in the entire construction process. The reliability of the connection and the efficiency of the installation directly affect the project progress and cost.

[0003] At present, the traditional connection method between the jacket and the foundation pile is mostly welding or bolt connection. Although the welding method can ensure the strength of the connection, the welding operation is carried out in the complex offshore environment, which requires extremely high construction technology, and is greatly affected by factors such as weather and waves. The construction efficiency is low and the welding quality is difficult to guarantee. Although the bolt connection method is relatively flexible, it requires precise reservation of bolt holes on the jacket and the foundation pile. The hole operation is cumbersome during the installation process. In addition, the bolts are prone to rust due to long-term exposure to the marine corrosive environment, making disassembly and maintenance difficult and increasing the subsequent operation and maintenance costs. These traditional connection methods have obvious deficiencies in achieving convenient assembly of the jacket and the foundation pile, and it is difficult to meet the needs of efficient construction and low-cost operation and maintenance of modern marine engineering. Therefore, they need to be improved. Summary of the Invention

[0004] The purpose of the present invention is to provide a foundation structure for a large offshore structure jacket. By coordinating structures such as a rotating block and a moving block, the difficulty of assembling the jacket and the foundation piles in the prior art is effectively overcome. A cylinder is used to drive the lifting block, so that the connecting rod drives the rotating block to unfold and embed into the foundation pile. At the same time, the movable block is used to lock the rotating block, thereby realizing rapid plug-in assembly of the jacket and the foundation pile.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a foundation structure of a large offshore structure jacket, including: an insert block, the outer surface of the insert block is movably sleeved with a foundation pile, the interior of the foundation pile is provided with a slide groove, the interior of the slide groove is movably sleeved with a movable block, and the outer surface of the foundation pile is provided with a circular groove; a locking mechanism, the locking mechanism is arranged inside the insert block; the locking mechanism includes a cylinder, the cylinder is fixedly connected to the interior of the insert block, the bottom end of the cylinder is fixedly installed with a lifting block, the interior of the lifting block is hinged with a connecting rod, the other end of the connecting rod is hinged with a rotating block, the interior of the rotating block is fixedly sleeved with a fixed shaft, and the outer surface of the fixed shaft is fixedly sleeved with the interior of the insert block.

[0006] As a preferred technical solution of the present invention, a circular shaft is movably sleeved inside the outer surface of the foundation pile, and a twisting block is fixedly installed on the circular shaft.

[0007] As a preferred technical solution of the present invention, a threaded sleeve is fixedly sleeved on the outer surface of the circular shaft, and the outer surface of the threaded sleeve is sleeved with the inner thread of the movable block.

[0008] As a preferred technical solution of the present invention, a vertical rod is fixedly installed at the bottom end of the lifting block, and the outer surfaces of the vertical rod are movably socketed with the inner parts of the insertion block and the foundation pile respectively. An extrusion block is fixedly installed at the bottom end of the vertical rod, and the outer surface of the extrusion block is movably socketed with the inner parts of the foundation pile.

[0009] As a preferred technical solution of the present invention, the outer surface of the extrusion block is in contact with a moving block, and an insertion rod is fixedly mounted on the outer surface of the moving block.

[0010] As a preferred technical solution of the present invention, a fixing block is fixedly installed inside the foundation pile, a fixing rod is fixedly installed on the outer surface of the fixing block, and the outer surface of the fixing rod is movably connected to the inner part of the insertion rod.

[0011] As a preferred technical solution of the present invention, a spring is fixedly mounted on the outer surface of the fixed block, and one end of the spring away from the fixed block is fixedly connected to the outer surface of the moving block.

[0012] As a preferred technical solution of the present invention, a positioning groove is provided inside the foundation pile, a positioning block is slidably connected inside the positioning groove, and the positioning block is fixedly connected to the outer surface of the insert block.

[0013] As a preferred technical solution of the present invention, a connecting block is movably connected inside the top of the plug block, a conductor frame is fixedly installed on the top of the connecting block, a working platform is fixedly installed on the top of the conductor frame, a reinforcing rod is provided on the conductor frame, and a guardrail is fixedly installed on the top of the working platform.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This large-scale offshore structure jacket foundation structure effectively overcomes the difficulty of connecting and assembling the jacket and the foundation piles in the existing technology through the cooperation of structures such as the rotating block and the moving block. The cylinder is used to drive the lifting block, so that the connecting rod drives the rotating block to unfold and embed into the foundation pile. At the same time, the movable block is used to lock the rotating block, thereby realizing the rapid plug-in assembly of the jacket and the foundation pile. Compared with traditional welding and bolt connections, the installation process is greatly simplified, the construction efficiency is significantly improved, the offshore operation time is shortened, and the impact of the harsh marine environment on the construction is reduced. In addition, when the structure is disassembled and maintained, the lock can be easily released by simply reversing the cylinder and the threaded sleeve, avoiding the problem of disassembly difficulties caused by bolt corrosion in traditional connection methods, and significantly reducing the subsequent operation and maintenance costs.

[0015] 2. This large-scale offshore jacket foundation structure, through the linkage design of lifting blocks, vertical rods, extrusion blocks, motion blocks, and insertion rods, provides a new solution for the stable installation of foundation piles on the seabed. When the lifting block moves downward under the drive of the cylinder, the vertical rod drives the extrusion block to move downward synchronously. By squeezing the four motion blocks, the insertion rod is forced to extend outward along the fixed rod and insert into the seabed soil. This design significantly enhances the anchoring force between the foundation pile and the seabed soil, effectively enhancing the foundation pile's pull-out and anti-overturning capabilities, ensuring that large-scale offshore structures remain stable under complex loads such as wind, waves, and currents. It effectively reduces the safety risks caused by unstable foundations for offshore structures, and at the same time reduces the maintenance and reinforcement costs caused by foundation instability. It is of great significance to ensure the long-term safe operation of marine engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 Schematic diagram of the cross-sectional structure of the foundation pile of the present invention; Figure 3 Schematic diagram of the cross-sectional structure of the cylinder of the present invention; Figure 4 Schematic diagram of the cross-sectional structure of the connecting rod of the present invention; Figure 5 It is a structural schematic diagram of the threaded sleeve of the present invention; Figure 6 Schematic diagram of the structure of the spring of the present invention; Figure 7 It is a schematic cross-sectional structural diagram of the fixing rod of the present invention; Figure 8 This is a schematic structural diagram of the positioning block of the present invention; The following are marked in the figure: 1-insert block, 2-foundation pile, 3-slide, 4-circular groove, 5-cylinder, 6-lifting block, 7-connecting rod, 8-rotating block, 9-fixed shaft, 10-movable block, 11-circular shaft, 12-twisting block, 13-threaded sleeve, 14-vertical rod, 15-extrusion block, 16-movement block, 17-insert rod, 18-fixed block, 19-fixed rod, 20-spring, 21-connecting block, 22-jacket, 23-working platform, 24-guardrail, 25-reinforcement rod, 26-positioning block, 27-positioning groove. DETAILED DESCRIPTION

[0017] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. In the description of the present invention, it should be noted that for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", etc., the directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present invention.

[0018] like Figures 1 to 8 As shown, the present invention provides a large offshore structure jacket foundation structure, comprising: The plug-in block 1 has a base pile 2 movably sleeved on its outer surface, a slide groove 3 is provided inside the base pile 2, a movable block 10 is movably sleeved inside the slide groove 3, and a circular groove 4 is provided on the outer surface of the base pile 2; a locking mechanism is provided inside the plug-in block 1; the locking mechanism includes a cylinder 5, which is fixedly connected to the inside of the plug-in block 1, a lifting block 6 is fixedly installed on the bottom end of the cylinder 5, a connecting rod 7 is hinged inside the lifting block 6, and the other end of the connecting rod 7 is hinged to a rotating block 8, and a fixed shaft 9 is fixedly sleeved inside the rotating block 8, and the outer surface of the fixed shaft 9 is fixedly sleeved inside the plug-in block 1.

[0019] When the cylinder 5 is running, the lifting block 6 will drive the four connecting rods 7 to move. At this time, the four connecting rods 7 will push the four rotating blocks 8, so that the four rotating blocks 8 rotate around the four fixed shafts 9. At this time, the four rotating blocks 8 will rotate and expand and embed into the interior of the foundation pile 2. Due to the design of the four slide grooves 3, the movement of the four movable blocks 10 will be limited. When the four movable blocks 10 move inward along the inside of the four slide grooves 3, the bottom ends of the four movable blocks 10 will contact the rotating blocks 8 during movement. At this time, the four movable blocks 10 will block the overall movement of the plug block 1 through the four rotating blocks 8, so that the plug block 1 as a whole is locked inside the foundation pile 2.

[0020] A circular shaft 11 is movably sleeved on the inner portion of the outer surface of the foundation pile 2 , and a twisting block 12 is fixedly mounted on the circular shaft 11 .

[0021] When the operator turns the screwing block 12 , the circular shaft 11 is driven to rotate.

[0022] The outer surface of the circular shaft 11 is fixedly sleeved with a threaded sleeve 13 , and the outer surface of the threaded sleeve 13 is sleeved with the inner thread of the movable block 10 .

[0023] When the circular shaft 11 rotates, the threaded sleeve 13 is driven to rotate. Since the outer surface of the threaded sleeve 13 is threadedly engaged with the inner thread of the movable block 10 , when the threaded sleeve 13 rotates, the movable block 10 is driven to move along the inside of the chute 3 .

[0024] Among them, a vertical rod 14 is fixedly installed at the bottom end of the lifting block 6, and the outer surface of the vertical rod 14 is movably connected to the inner part of the insertion block 1 and the foundation pile 2 respectively. An extrusion block 15 is fixedly installed at the bottom end of the vertical rod 14, and the outer surface of the extrusion block 15 is movably connected to the inner part of the foundation pile 2.

[0025] When the lifting block 6 moves downward, the squeezing block 15 is driven to move downward via the vertical rod 14 .

[0026] The outer surface of the extrusion block 15 abuts against the movement block 16 , and the outer surface of the movement block 16 is fixedly mounted with an insertion rod 17 .

[0027] When the squeezing block 15 moves downward, it will squeeze and push the four moving blocks 16, and at this time the four moving blocks 16 will drive the four inserting rods 17 to move.

[0028] A fixing block 18 is fixedly installed inside the foundation pile 2 , a fixing rod 19 is fixedly installed on the outer surface of the fixing block 18 , and the outer surface of the fixing rod 19 is movably sleeved with the inner portion of the insertion rod 17 .

[0029] Due to the design of the fixed rod 19, the movement of the insertion rod 17 will be limited. When the extrusion block 15 squeezes and pushes the four moving blocks 16, the four moving blocks 16 will drive the four insertion rods 17 to move outward along the outer surface of the fixed rod 19. At this time, the four insertion rods 17 will be inserted into the seabed soil through the circular groove 4, thereby enhancing the anchoring force of the foundation pile 2.

[0030] A spring 20 is fixedly mounted on the outer surface of the fixed block 18 , and one end of the spring 20 away from the fixed block 18 is fixedly connected to the outer surface of the moving block 16 .

[0031] When the four moving blocks 16 move outward, the four springs 20 will be stretched. Due to the design of the four springs 20, the movement of the four moving blocks 16 will be well reset.

[0032] A positioning groove 27 is provided inside the foundation pile 2 , and a positioning block 26 is slidably connected inside the positioning groove 27 . The positioning block 26 is fixedly connected to the outer surface of the insert block 1 .

[0033] Due to the design of the positioning groove 27 and the positioning block 26 , a good positioning effect will be achieved for the connection between the insert block 1 and the foundation pile 2 .

[0034] Among them, the top of the plug block 1 is movably connected to the internal sleeve of the connecting block 21, the top of the connecting block 21 is fixedly installed with a conductor frame 22, the top of the conductor frame 22 is fixedly installed with a working platform 23, a reinforcing rod 25 is provided on the conductor frame 22, and the top of the working platform 23 is fixedly installed with a guardrail 24.

[0035] Due to the design of the guardrail 24, it will provide good protection for the personnel located at the top of the working platform 23, and due to the design of the reinforcing rod 25, it will be possible to enhance the structural strength of the working platform 23.

[0036] The working principle and use process of the present invention: When the jack is lifted and lowered, the jack 2 is lowered to the bottom of the support frame 22. When the jack is lifted and lowered, the support frame 2 is lowered to the bottom of the support frame 22. When the jack is lifted and lowered, the support frame 2 is lowered to the bottom of the support frame 22. When the jack is lifted and lowered, the support frame 2 is lowered to the bottom of the support frame 22. When the cam 11 is in the state of rotation, the cam 12 is in the state of rotation, and the cam 12 is in the state of rotation. When the cam 11 is in the state of rotation, the cam 12 is in the state of rotation, and the cam 12 is in the state of rotation. When the cam 11 is in the state of rotation, the cam 12 is in the state of rotation, and the cam 12 is in the state of rotation. When the cam 11 is in the state of rotation, the cam 12 is in the state of rotation, and the cam 12 is in the state of rotation. When the cam 11 is in the state of rotation, the cam 12 is in the state of rotation, and the cam 12 is in the state of rotation,

[0037] When the vertical rod 14 moves downward, it will drive the extrusion block 15 to move downward. At this time, the outer surface of the extrusion block 15 will squeeze and push the outer surface of the moving block 16, so that the moving block 16 drives the insertion rod 17 to move outward along the outer surface of the fixed rod 19. In this process, the four insertion rods 17 will be inserted into the soil during the outward movement, thereby enhancing the anchoring force between the foundation pile 2 and the seabed soil as a whole, so as to increase the stability and reliability of the foundation pile 2. When the four moving blocks 16 drive the four insertion rods 17 to move outward, the four springs 20 will be stretched. Due to the design of the four springs 20, the movement of the four moving blocks 16 will have a good reset effect.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0039] The basic principles, main features and advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the above description is merely illustrative of the principles of the present invention and that various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and that such changes and modifications fall within the scope of the invention as claimed.

[0040] It is intended that the scope of protection sought in this invention be defined by the following claims and their equivalents.

Claims

1. A large offshore structure jacket foundation structure, characterized by: The invention comprises: an insert block (1), the outer surface of the insert block (1) is movably sleeved with a base pile (2), the interior of the base pile (2) is provided with a slide groove (3), the interior of the slide groove (3) is movably sleeved with a movable block (10), and the outer surface of the base pile (2) is provided with a circular groove (4); a locking mechanism, the locking mechanism is arranged inside the insert block (1); the locking mechanism comprises a cylinder (5), the cylinder (5) is fixedly connected to the interior of the insert block (1), a lifting block (6) is fixedly installed at the bottom end of the cylinder (5), the interior of the lifting block (6) is hinged with a connecting rod (7), the other end of the connecting rod (7) is hinged with a rotating block (8), the interior of the rotating block (8) is fixedly sleeved with a fixed shaft (9), and the outer surface of the fixed shaft (9) is fixedly sleeved with the interior of the insert block (1).

2. The large-scale offshore structure jacket foundation structure according to claim 1, characterized in that: A circular shaft (11) is movably sleeved on the inner portion of the outer surface of the foundation pile (2), and a twisting block (12) is fixedly mounted on the circular shaft (11).

3. The large offshore structure jacket foundation structure according to claim 2, characterized in that: A threaded sleeve (13) is fixedly sleeved on the outer surface of the circular shaft (11), and the outer surface of the threaded sleeve (13) is sleeved on the inner thread of the movable block (10).

4. The large offshore structure jacket foundation structure according to claim 1, characterized in that: A vertical rod (14) is fixedly mounted on the bottom end of the lifting block (6), and the outer surfaces of the vertical rod (14) are respectively movably sleeved with the inner parts of the insert block (1) and the foundation pile (2). An extrusion block (15) is fixedly mounted on the bottom end of the vertical rod (14), and the outer surface of the extrusion block (15) is movably sleeved with the inner part of the foundation pile (2).

5. The large offshore structure jacket foundation structure according to claim 4, characterized in that: The outer surface of the extrusion block (15) abuts against a motion block (16), and an insertion rod (17) is fixedly mounted on the outer surface of the motion block (16).

6. The large offshore structure jacket foundation structure according to claim 5, characterized in that: A fixing block (18) is fixedly installed inside the foundation pile (2), a fixing rod (19) is fixedly installed on the outer surface of the fixing block (18), and the outer surface of the fixing rod (19) is movably sleeved with the inner portion of the insertion rod (17).

7. The large offshore structure jacket foundation structure according to claim 6, characterized in that: A spring (20) is fixedly mounted on the outer surface of the fixed block (18), and one end of the spring (20) away from the fixed block (18) is fixedly connected to the outer surface of the moving block (16).

8. The large offshore structure jacket foundation structure according to claim 1, characterized in that: A positioning groove (27) is provided inside the foundation pile (2), a positioning block (26) is slidably connected inside the positioning groove (27), and the positioning block (26) is fixedly connected to the outer surface of the insert block (1).

9. The large offshore structure jacket foundation structure according to claim 1, characterized in that: A connecting block (21) is movably sleeved inside the top of the insert block (1), a pipe frame (22) is fixedly mounted on the top of the connecting block (21), a working platform (23) is fixedly mounted on the top of the pipe frame (22), a reinforcing rod (25) is provided on the pipe frame (22), and a guardrail (24) is fixedly mounted on the top of the working platform (23).

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