Combined ocean pile foundation anti-sinking plate structure based on apron board and curtain

Abstract

The invention relates to the technical field of ocean engineering, in particular to a combined ocean pile foundation anti-sinking plate structure based on apron boards and curtains, which comprises a sleeve arranged on the outer side of an ocean pile foundation in a sleeving manner and an anti-sinking plate arranged at the bottom of the sleeve, and the anti-sinking plate comprises a plurality of apron boards uniformly distributed on the periphery of the bottom of the sleeve at intervals; a curtain is laid and connected to the interval between every two adjacent apron boards, and the top of each apron board is connected with the top of the sleeve through an inclined strut assembly. According to the combined ocean pile foundation anti-sinking plate structure based on the apron board and the curtain, sedimentation of the pile foundation can be effectively prevented, corrosion of ocean current to a seabed can be resisted, and the stability and safety of an ocean engineering structure are greatly improved. And due to the flexible detachable design, convenience is also provided for subsequent maintenance.

Description

Technical Field

[0001] The invention relates to the technical field of marine engineering, and in particular to a combined marine pile foundation anti-sinking plate structure based on a skirt plate and a curtain. Background Art

[0002] In marine engineering, especially in the construction of large structures such as oil and gas platforms and wind turbine towers, the stability of pile foundations is crucial. Due to the complexity of the seabed environment, pile foundations are easily affected by factors such as water erosion and uneven settlement of the seabed, so a technology is needed to ensure the stability of pile foundations.

[0003] Traditional anti-sinking plate technology is mainly used to increase the contact area between the pile foundation and the seabed, thereby dispersing the load of the pile foundation and reducing the sinking of the pile foundation. These anti-sinking plates are usually fixed to the bottom of the pile foundation to provide sufficient support. Since the vertical bearing capacity of the seabed surface soil is weak and has fluid plasticity, even with the support of the anti-sinking plate, the jacket will still sink to a certain depth under the scouring of seawater, resulting in the actual elevation of the platform after construction being lower than the design elevation; since the anti-sinking plate and the seabed surface are in flat contact, the anti-sinking plate has weak horizontal anti-slip ability. In addition, most of the actual projects currently use integrated anti-sinking plates, which require high economic and time costs in installation, disassembly and maintenance. There is an urgent need for relevant technical innovations to improve the functionality of the anti-sinking plate in terms of anti-scouring and the convenience of construction and safety maintenance.

[0004] Although traditional anti-sinking plates have solved the problem of pile foundation sinking to a certain extent, they have certain limitations in terms of seabed scouring protection, maintenance convenience, structural performance optimization, environmental adaptability and economic benefits. For example, traditional anti-sinking plates may not have anti-scouring functions. Once the seabed is scoured, the stability of the pile foundation will still be threatened. At present, most anti-sinking plate designs lack consideration of the anti-scouring function, mainly because the understanding of the main functions of anti-sinking plates is often limited to their ability to disperse and transfer loads, while their ability to resist scouring is not given enough attention. This design status quo has potential risks, because scouring in the marine environment often occurs, which will inevitably reduce the stability and bearing safety of the marine pile foundation.

[0005] In addition, currently, most of the actual projects use integrated anti-sinking plates, which require high economic and time costs in terms of installation, disassembly and maintenance. There is an urgent need for relevant technological innovations to improve the convenience of anti-sinking plates in construction and safety maintenance. With the increasing development and utilization of marine resources, the requirements for anti-sinking plate technology are also constantly increasing. This has prompted the continuous innovation of anti-sinking plate technology to meet the needs of projects in deeper water and more complex environments. Summary of the invention

[0006] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a combined marine pile foundation anti-sinking plate structure based on skirts and curtains, which can not only effectively prevent the settlement of pile foundations, but also resist the erosion of seabed by ocean currents, greatly improving the stability and safety of marine engineering structures. Its flexible and detachable design also provides convenience for subsequent maintenance.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A combined marine pile foundation anti-sinking plate structure based on skirt boards and curtains, comprising a sleeve sleeved on the outside of the marine pile foundation and an anti-sinking plate arranged at the bottom of the sleeve, the anti-sinking plate comprising a plurality of skirt boards evenly distributed around the bottom of the sleeve, a curtain is laid and connected at the interval between each two adjacent skirt boards, and the top of each skirt board is connected to the top of the sleeve by a diagonal brace assembly.

[0009] As a further optimization scheme of the present invention, an arc-shaped connecting piece is fixed to the inner end of each skirt plate, and all the arc-shaped connecting pieces are connected end to end in sequence to form a closed-loop ring, and the ring is sleeved on the bottom of the sleeve and detachably connected thereto.

[0010] As a further optimization solution of the present invention, every two adjacent arc-shaped connecting members are connected by a mortise and tenon structure.

[0011] As a further optimization solution of the present invention, the diagonal brace assembly includes a connecting rod and an articulated seat, and both ends of the connecting rod are respectively hinged to the top of the sleeve and the top of the skirt plate through the articulated seat.

[0012] As a further optimization solution of the present invention, the connecting rod includes a hydraulic rod.

[0013] As a further optimization solution of the present invention, a plurality of grooves are provided at the bottom of the skirt plate.

[0014] As a further optimization solution of the present invention, the lower surface of the skirt board and the lower surface of the curtain are on the same plane.

[0015] As a further optimization solution of the present invention, ribs are provided on the outer side wall of the sleeve.

[0016] As a further optimization solution of the present invention, a plurality of water-permeable holes are provided on the skirt plate.

[0017] As a further optimization solution of the present invention, the lower surface of the skirt plate is a plane, the upper surface thereof is an inclined surface, and the thickness thereof gradually decreases from the inside to the outside.

[0018] Compared with the prior art, the combined marine pile foundation anti-sinking plate structure based on skirt and curtain of the present invention has the following significant advantages and beneficial effects:

[0019] The anti-sinking plate integrates the anti-scouring function through the combined design of curtain and skirt, which can effectively reduce the scouring effect of ocean current on the seabed while protecting the pile foundation. This design solves the limitations of traditional anti-sinking plates in the problem of seabed scouring and improves the stability and safety of the overall structure; the detachable design is easy to install and maintain, and can be quickly disassembled when the pile foundation needs to be repaired or replaced, thereby reducing maintenance costs and having higher flexibility and convenience. The structure of setting multiple ribs at the waist of the sleeve and setting grooves at the bottom of the anti-sinking plate is optimized to make it perform better when bearing vertical and horizontal loads. This optimized design helps to improve the bearing capacity of the anti-sinking plate, reduce structural deformation, and thus extend its service life; the design of the anti-sinking plate takes into account the application needs in different marine environments, and can adapt to complex seabed terrain and changeable ocean current conditions. This adaptability makes it have a wider application potential in various marine projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of a combined marine pile foundation anti-sinking plate structure based on a skirt plate and a curtain according to the present invention.

[0021] Figure 2 It is a schematic diagram of the main structure of the combined marine pile foundation anti-sinking plate structure based on the skirt plate and the curtain of the present invention.

[0022] Figure 3 It is a schematic diagram of the top view of the combined marine pile foundation anti-sinking plate structure based on the skirt plate and the curtain of the present invention.

[0023] Figure 4 It is a structural schematic diagram of the sleeve of the present invention.

[0024] Figure 5 It is a schematic structural diagram of the skirt plate and the ferrule of the present invention.

[0025] Figure 6 It is a partial structural schematic diagram of the anti-sinking plate of the present invention.

[0026] Figure numerals: 1, pile foundation; 2, sleeve; 201, rib plate; 202, ear plate; 3, anti-sinking plate; 301, skirt plate; 302, curtain; 303, arc-shaped connecting piece; 304, ring; 305, groove; 306, water-permeable hole; 4, diagonal bracing assembly; 401, connecting rod; 402, hinged seat. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the preferred implementation scheme of the present invention is described below in conjunction with specific embodiments. However, it should be understood that the drawings are only used for exemplary description and cannot be understood as a limitation on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationship described in the drawings is only for exemplary description and cannot be understood as a limitation on this patent.

[0028] The present specific implementation manner aims to describe in detail the combined marine pile foundation anti-sinking plate structure based on skirt plates and curtains of the present invention and its application in cone valves, and further illustrate its structural composition, working principle and technical features in preferred embodiments.

[0029] like Figure 1 As shown, the present invention provides a combined marine pile foundation anti-sinking plate structure based on skirts and curtains, which mainly includes a sleeve 2, a skirt 301, a collar 304, a curtain 302 and a diagonal brace assembly 4. Among them, the sleeve 2 is used to wrap the pile foundation 1, the skirt 301, the collar 304 and the curtain 302 together constitute the anti-sinking plate system, and the diagonal brace assembly 4 is used to enhance the overall stability of the structure. Due to the modular combination of skirts 301 and curtains 302, the layout of the skirts 301 and the size of the curtains 302 can be adjusted according to different geological conditions and hydrological environments, making the entire structure more flexible and able to adapt to more diverse marine environments. The modular design allows each part to be independently manufactured, transported and installed, reducing the difficulty of on-site installation. At the same time, if a part is damaged or needs to be inspected, it can be replaced or repaired separately without replacing the entire anti-sinking plate system, saving time and cost.

[0030] In some examples, such as Figure 3 As shown, the skirt 301 and the collar 304 are designed as follows: the skirts 301 are evenly distributed around the bottom of the sleeve 2 at a predetermined interval, and the curtain 302 is stretched between each skirt 301 to form an integral protective barrier. The curtain 302 is connected to the skirt 301 and the collar 304 by a hanging ear (or other appropriate connecting device) to facilitate the installation and removal of the curtain 302. Figure 5 and Figure 6 As shown, an arc-shaped connector 303 is fixed to the inner end of each skirt board 301, and all arc-shaped connectors 303 are connected end to end to form a closed loop ferrule 304, which is installed on the bottom of the sleeve 2 through the ear plate 202 and the latch. Adjacent arc-shaped connectors 303 are connected by a mortise and tenon structure to ensure the firmness and convenience of the connection.

[0031] Among them, Figure 5As shown, the lower surface of the skirt 301 is designed as a plane, and the upper surface is designed as an inclined surface, and its thickness gradually decreases from the inside to the outside. On the one hand, the inclined surface design helps to improve the hydrodynamic characteristics, so that the water flow bypasses the anti-sinking plate 3 more smoothly, reduces the turbulent area of ​​the water flow around the anti-sinking plate 3, and thus reduces the scouring effect on the pile foundation 1; the inclined surface design can reduce water resistance, help reduce the pressure of the water flow on the anti-sinking plate 3, thereby reducing the load of the structure and improving the stability of the structure. On the other hand, the inclined surface design can also reduce the accumulation of sediments on the anti-sinking plate 3, prevent the sediments from clogging the water permeable holes 306 or affecting the function of the anti-sinking plate 3. In addition, the design of gradually decreasing thickness from the inside to the outside can make the load distribution more reasonable. Generally, the position close to the pile foundation 1 bears a greater load, so keeping the thickness of this part larger can provide better support, while in the part far away from the pile foundation 1, due to the smaller load, the thickness can be appropriately reduced, which not only ensures the strength of the key parts, but also saves materials.

[0032] Among them, Figure 5 As shown, the bottom of the skirt 301 is in contact with the seabed mud surface. In order to limit the lateral displacement between the bottom of the skirt 301 and the soil, a plurality of grooves 305 are designed at the bottom of the skirt 301. These grooves 305 can help the anti-sinking plate 3 to better embed into the seabed, so that a greater friction resistance is formed between the seabed surface soil and the bottom plate, and the horizontal anti-slip ability of the anti-sinking plate 3 is further enhanced.

[0033] Among them, Figure 3 As shown, the anti-sinking plate 3 will be affected by hydrostatic pressure in the water. In order to prevent hydrostatic collapse, a plurality of water-permeable holes 306 are opened on the skirt board 301 to make the water pressure above and below the skirt board 301 the same, so as to balance the internal and external water pressures and prevent excessive water pressure from causing damage to the structure.

[0034] In some examples, such as Figure 2 and Figure 3 As shown, the design of the curtain 302 is as follows: the curtain 302 and the skirt 301 are both fan-shaped, and the lower surfaces of the skirt 301 and the curtain 302 are ensured to be located on the same plane to form a continuous protective surface. The curtain 302 should be made of corrosion-resistant and high-strength materials to adapt to the harsh marine environment, such as PVC material, to prevent the soil around the anti-sinking plate 3 from being washed away.

[0035] In some examples, such as Figure 1-Figure 3As shown, the design of the diagonal brace assembly 4 is as follows: the diagonal brace assembly 4 is composed of a connecting rod 401 and an articulated seat 402, and the two ends of the connecting rod 401 are connected to the top of the sleeve 2 and the top of the skirt 301 through the articulated seat 402. The force exerted by the seabed on the anti-sinking plate 3 is mainly borne by the skirt 301, and the diagonal brace and the sleeve 2 provide support for the skirt 301; the force borne by the skirt 301 is transmitted to the marine pile foundation 1 through the diagonal brace and the sleeve 2. In order to enhance the adjustment ability, the connecting rod 401 preferably uses a hydraulic rod to ensure uniform force in multiple directions, so that its length can be adjusted according to actual conditions to adapt to different geological conditions.

[0036] In some examples, such as Figure 4 As shown, the design of the sleeve 2 is as follows: a rib 201 is provided on the outer wall of the sleeve 2 to enhance its structural strength and bearing capacity, and also to help disperse the load and reduce the settlement of the pile foundation 1. The connection between the entire sleeve 2 and the skirt 301 and the curtain 302 is designed to be detachable, which is convenient for later maintenance and replacement.

[0037] In some examples, the construction and installation process is as follows: first, sleeve 2 is placed outside pile foundation 1, then skirt 301 and curtain 302 are installed in sequence, and fixed by diagonal brace assembly 4. Finally, check whether all components are connected firmly. Note: During the installation process, it is necessary to ensure that the components are closely matched to avoid safety hazards caused by looseness.

[0038] The combined marine pile foundation anti-sinking plate structure based on skirt and curtain provided by the present invention can not only effectively prevent the settlement of pile foundation, but also resist the erosion of seabed by ocean current, thus greatly improving the stability and safety of marine engineering structures. Its flexible and detachable design also provides convenience for subsequent maintenance.

[0039] According to the description and drawings of the present invention, those skilled in the art can easily manufacture or use the combined marine pile foundation anti-sinking plate structure based on skirt plates and curtains of the present invention, and can produce the positive effects described in the present invention.

[0040] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationships are based on the orientation or positional relationships shown in the 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 operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in conjunction with the drawings and according to specific circumstances.

[0041] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A combined marine pile foundation anti-sinking plate structure based on a skirt plate and a curtain, comprising a sleeve (2) sleeved on the outside of the pile foundation (1) and an anti-sinking plate (3) arranged at the bottom of the sleeve (2), characterized in that: The anti-sinking plate (3) comprises a plurality of skirt boards (301) evenly distributed around the bottom of the sleeve (2), a curtain (302) is laid and connected at the interval between each two adjacent skirt boards (301), and the top of each skirt board (301) is connected to the top of the sleeve (2) via a diagonal brace assembly (4).

2. The combined marine pile foundation anti-sinking plate structure based on skirt board and curtain cloth according to claim 1 is characterized in that: An arc-shaped connecting piece (303) is fixed to the inner end of each skirt plate (301), and all the arc-shaped connecting pieces (303) are connected end to end in sequence to form a closed-loop ring (304). The ring (304) is sleeved on the bottom of the sleeve (2) and is detachably connected thereto.

3. The combined marine pile foundation anti-sinking plate structure based on skirt board and curtain cloth according to claim 2 is characterized in that: Every two adjacent arc-shaped connecting members (303) are connected by a mortise and tenon structure.

4. The combined marine pile foundation anti-sinking plate structure based on skirt board and curtain cloth according to claim 1 is characterized in that: The diagonal brace assembly (4) comprises a connecting rod (401) and a hinge seat (402), and two ends of the connecting rod (401) are respectively hinged to the top of the sleeve (2) and the top of the skirt plate (301) through the hinge seat (402).

5. The combined marine pile foundation anti-sinking plate structure based on skirt board and curtain cloth according to claim 4 is characterized in that: The connecting rod (401) comprises a hydraulic rod.

6. The combined marine pile foundation anti-sinking plate structure based on skirt board and curtain cloth according to claim 1 is characterized in that: The bottom of the skirt plate (301) is provided with a plurality of grooves (305).

7. The combined marine pile foundation anti-sinking plate structure based on skirt board and curtain cloth according to claim 1 is characterized in that: The lower surface of the skirt board (301) and the lower surface of the curtain (302) are on the same plane.

8. The combined marine pile foundation anti-sinking plate structure based on skirt board and curtain cloth according to claim 1 is characterized in that: A rib plate (201) is provided on the outer side wall of the sleeve (2).

9. The combined marine pile foundation anti-sinking plate structure based on skirt board and curtain cloth according to claim 1 is characterized in that: The skirt plate (301) is provided with a plurality of water-permeable holes (306).

10. The combined marine pile foundation anti-sinking plate structure based on skirt board and curtain cloth according to claim 1 is characterized in that: The lower surface of the skirt plate (301) is a plane, the upper surface is an inclined surface, and the thickness thereof gradually decreases from the inside to the outside.

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