Underwater suction type foundation structure

Abstract

The utility model relates to an underwater suction type foundation structure which comprises a guide pipe frame, one end of the guide pipe frame is connected with a guide rod, the structure further comprises a suction barrel and a baffle, the suction barrel is arranged in a sliding mode relative to the guide rod in the first direction, and the baffle is connected to one end of the guide rod and matched with the suction barrel. According to the utility model, the guide rods are respectively arranged below the jacket for guiding, so that the plurality of suction barrels can be kept balanced during sinking, and a control method and a leveling strategy in the sinking process of the suction barrels are effectively solved; the baffle is arranged in the suction barrel, the hole is formed in the suction barrel, the phenomenon that soil is squeezed into the suction barrel in the sinking process, and consequently soil is blocked can be effectively avoided, in addition, the first tapping-in section is arranged on the edge of the baffle, the suction barrel can be further guided, and the stability of the suction barrel in the sinking process is kept.

Description

Technical Field

[0001] This utility model relates to the field of marine engineering foundation technology, and in particular to an underwater suction foundation structure. Background Technology

[0002] Offshore wind power is a clean and renewable energy source with zero carbon emissions. With the rapid construction of nearshore wind farms in recent years, nearshore development space is gradually decreasing, while my country's deep-sea areas have vast exploitable space. Future wind farm site selection will focus on deep-sea areas. For deep-sea areas, one currently promoted structural form is the jacket suction foundation structure. This multi-cylinder jacket foundation has multiple fixed suction cylinders connected to the bottom of its jacket steel frame. Pumps draw out air and water from the cylinders, creating a pressure difference that drives the cylinder foundation into the seabed to secure the jacket.

[0003] However, in actual use, traditional multi-cylinder foundations often tilt due to improper application of negative pressure in multiple cylinders during construction. Or, the application of negative pressure may cause the soil inside the cylinder to bulge and form a soil plug, preventing the foundation from sinking to the design elevation and failing to meet the bearing capacity. Alternatively, excessive negative pressure may cause the soil seepage path to be connected, resulting in the loss of the negative pressure environment inside the cylinder and preventing further sinking.

[0004] Therefore, to address issues such as tilting, soil plugging, and seabed seepage damage that arise during the construction of multi-cylinder foundations, existing technologies generally employ soil plug baffles, soil plug detection devices, and compartmentalized partitions to prevent soil plugging, while using guide piles in the jacket structure to prevent tilting. These methods only solve individual problems in multi-cylinder foundation construction and are not convenient for construction. For example, the driving of guide piles not only prolongs the construction period, but the vertical driving of guide piles also introduces new technical difficulties. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an underwater suction-type foundation structure to solve one or more problems in the prior art.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] An underwater suction-type foundation structure includes a guide frame, one end of which is connected to a guide rod. The structure also includes a suction cylinder and a baffle. The suction cylinder is slidably disposed relative to the guide rod along a first direction, and the baffle is connected to one end of the guide rod and cooperates with the suction cylinder.

[0008] Furthermore, the suction cylinder has a guide portion at the center of its surface, and a first hole is formed on the surface of the guide portion along a first direction, with the guide rod disposed in the first hole.

[0009] Furthermore, a recessed portion is provided on the surface of the first hole, and a sealing ring is provided in the recessed portion, which also abuts against the guide rod.

[0010] Furthermore, the baffle is disposed inside the suction cylinder and is fitted with the suction cylinder with a clearance.

[0011] Furthermore, the baffle has a protrusion along its edge on the side away from the guide frame, and the end of the protrusion has a first insertion section.

[0012] Furthermore, the structure also includes anchor bolts, which are uniformly arranged on the baffle along a first direction and facing away from the guide frame, with the end of the anchor bolt away from the baffle forming a second penetration section.

[0013] Furthermore, the surface of the baffle is also uniformly provided with a second hole, and the surface of the suction cylinder is also provided with a third hole, the second hole and the third hole cooperating with each other.

[0014] Furthermore, the structure also includes a negative pressure valve connected to the suction cylinder.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] (i) This utility model provides guidance by setting guide rods below the guide frame, which enables multiple suction cylinders to maintain balance during sinking, effectively solving the control method and leveling strategy of suction cylinder sinking process.

[0017] (ii) By setting a baffle and opening a hole inside the suction cylinder, it is possible to effectively prevent soil from being squeezed into the suction cylinder during the sinking process, thus avoiding soil blockage. In addition, by setting a first entry section at the edge of the baffle, the suction cylinder can be further guided to maintain the stability of the suction cylinder during sinking.

[0018] (iii) By welding anchor rods to the lower part of the baffle, the structure is better fixed to the seabed, avoiding the problem of unbalanced suction cylinder when sinking, and improving the stability of the foundation.

[0019] (iv) By installing a negative pressure valve on the suction cylinder, the negative pressure inside the cylinder can be adjusted when the suction exceeds the critical suction, so as to avoid soil piping or seepage damage, while ensuring that there is still suction inside the cylinder, which facilitates pumping water inside the cylinder and keeps the suction cylinder continuously sinking. Attached Figure Description

[0020] Figure 1 This diagram shows an overall structural schematic of an underwater suction-type foundation structure according to an embodiment of the present invention.

[0021] Figure 2This illustration shows a cross-sectional view of the underwater suction foundation structure according to an embodiment of the present invention, after the suction cylinder, baffle, and anchor bolts are assembled.

[0022] Figure 3 This diagram illustrates a structural schematic of an underwater suction-type foundation structure with a suction cylinder and a negative pressure valve, according to an embodiment of the present invention.

[0023] Figure 4 This diagram illustrates the structure of a guide rod and baffle in an underwater suction-type foundation according to an embodiment of the present invention.

[0024] Figure 5 This diagram illustrates the assembly of the guide section and guide rod of an underwater suction-type foundation structure according to an embodiment of the present invention.

[0025] The following are labels in the attached diagram: 1. Guide frame; 2. Negative pressure valve; 3. Guide rod; 4. Suction cylinder; 401. Guide part; 4011. First hole; 4012. Recessed part; 402. Third hole; 5. Baffle; 501. Protrusion; 5011. First insertion section; 502. Second hole; 6. Sealing ring; 7. Anchor bolt; 701. Second insertion section. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description of an underwater suction-type foundation structure proposed by this utility model, in conjunction with the accompanying drawings and specific embodiments, will further illustrate its purpose. The advantages and features of this utility model will become clearer from the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, used only to facilitate and clearly illustrate the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only used to complement the content disclosed in the specification, for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0027] Please see Figures 1 to 5The underwater suction-type foundation structure of this embodiment includes a guide frame 1, one end of which is connected to a guide rod 3. In this embodiment, three guide rods 3 are provided. The structure also includes a suction cylinder 4 and a baffle 5. The suction cylinder 4 is slidably disposed relative to the guide rods 3 along a first direction. The baffle 5 is connected to one end of the guide rods 3 and cooperates with the suction cylinder 4. In this embodiment, the first direction is the direction perpendicular to the upper surface of the suction cylinder 4, and in practical applications, it is also the direction perpendicular to the sea level.

[0028] Furthermore, the suction cylinder 4 has a guide portion 401 at the center of its surface. The guide portion 401 is arranged in a first direction toward the guide frame 1. A first hole 4011 is formed on the surface of the guide portion 401 in the first direction. The guide rod 3 is disposed in the first hole 4011. By providing the guide portion 401 at the center of the surface of the suction cylinder 4, the stability of the suction cylinder 4 can be ensured when the guide rod 3 is in operation.

[0029] Furthermore, a recessed portion 4012 is provided on the surface of the first hole 4011. Preferably, the recessed portion 4012 is arranged in a ring on the surface of the first hole 4011. A sealing ring 6 is provided in the recessed portion 4012. The sealing ring 6 also abuts against the guide rod 3, thereby ensuring the sealing between the guide rod 3 and the guide portion 401.

[0030] Furthermore, the baffle 5 is disposed inside the suction cylinder 4 and is fitted with the suction cylinder 4 with a clearance. The surface of the baffle 5 is also uniformly provided with second holes 502. Through the arrangement of the baffle 5 and the second holes 502, it is possible to effectively prevent soil plugging formed when the soil fills the entire interior of the suction cylinder 4 during pipe sinking.

[0031] Furthermore, the baffle 5 has a protrusion 501 on the side away from the guide frame 1, and the end of the protrusion 501 is provided with a first insertion section 5011. The first insertion section 5011 can improve the stability of the suction cylinder 4 when it sinks while guiding the suction cylinder 4.

[0032] Furthermore, the structure also includes anchor bolts 7, which are evenly arranged on the baffle 5 along the first direction and facing away from the guide frame 1. The end of the anchor bolt 7 away from the baffle 5 forms a second penetration section 701. The arrangement of the anchor bolts 7 and the second penetration section 701 facilitates the insertion of the anchor bolts 7 into the soil and better fixes them to the seabed, so that the entire foundation can maintain better balance.

[0033] Furthermore, a third hole 402 is provided on the surface of the suction cylinder 4. The second hole 502 and the third hole 402 cooperate with each other. During the process of the structure sinking into the seabed, water is pumped through the third hole 402, so that a negative pressure is formed inside the suction cylinder 4. Under the negative pressure, the water in the seabed flows into the suction cylinder 4 through the second hole 502.

[0034] Furthermore, the structure also includes a negative pressure valve 2, which is connected to the suction cylinder 4 to prevent piping caused by improper application of negative pressure. By opening and closing the negative pressure valve 2, the pressure inside the suction cylinder 4 can be adjusted in a timely manner. When the suction exceeds the critical suction, it can effectively avoid soil piping or seepage damage, while ensuring that there is still suction inside the suction cylinder 4, which facilitates the continuous pumping operation and ensures the continuous settlement of the suction foundation structure in this embodiment.

[0035] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An underwater suction foundation structure, characterized by: The structure comprises a guide pipe frame, a guide rod connected to one end of the guide pipe frame, a suction cylinder and a baffle, the suction cylinder is slidably arranged in a first direction relative to the guide rod, and the baffle is connected to one end of the guide rod and matched with the suction cylinder.

2. An underwater suction foundation structure according to claim 1, characterized in that: The suction cylinder is provided with a guide part at the center of a surface, a first hole is formed in the surface of the guide part in the first direction, and the guide rod is arranged in the first hole.

3. An underwater suction foundation structure according to claim 2, characterized in that: A recessed part is further arranged on the hole surface, a sealing ring is arranged in the recessed part, and the sealing ring further abuts against the guide rod.

4. An underwater suction foundation structure according to claim 3, characterized in that: The baffle is arranged in the suction cylinder and gap-fitted with the suction cylinder.

5. An underwater suction foundation structure according to claim 4, characterised in that: The baffle is provided with a protruding part along the edge on the side away from the guide pipe frame, and the end of the protruding part is provided with a first attack section.

6. An underwater suction foundation structure according to claim 5, characterised in that: The structure further comprises anchor rods, the anchor rods are uniformly arranged on the baffle in a first direction and towards the side away from the guide pipe frame, and the end of the anchor rod away from the baffle forms a second attack section.

7. An underwater suction foundation structure according to claim 6, characterised in that: The surface of the baffle is further uniformly provided with a second hole, and the surface of the suction cylinder is further provided with a third hole, the second hole and the third hole are matched with each other.

8. An underwater suction foundation structure according to claim 7, characterised in that: The structure further comprises a negative pressure valve, and the negative pressure valve is connected to the suction cylinder.

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