A scour protection structure for a marine pile foundation of solidified soil

Abstract

The utility model provides a kind of solidified soil marine pile foundation scouring-preventing structure, it is related to pile foundation protection field.The solidified soil marine pile foundation scouring-preventing structure, including symmetrical fixed splicing in the half ring sleeve of the outer surface of pile foundation, the inside of the half ring sleeve is provided with upper limit stop, half ring sleeve inside is provided with lower limit stop, the surface of lower limit stop is provided with the through hole of being passed through lower limit stop and half ring sleeve, the number of through hole has multiple, multiple through hole annular array distribution, wherein one half ring sleeve is equipped with feed inlet, feed inlet is located between upper limit stop and lower limit stop.The solidified soil marine pile foundation scouring-preventing structure, by being set in the half ring sleeve of splicing in the outer surface of pile foundation and being set in the through hole of annular distribution in lower limit stop, to be able to along the center of pile foundation to spread out after being able to inject annular sleeve with solidified soil, to be able to avoid appearing pouring dead angle further.

Description

Technical Field

[0001] This utility model relates to the field of pile foundation protection technology, specifically to a solidified soil marine pile foundation anti-scour structure. Background Technology

[0002] Existing patent CN220978121U describes a scour prevention structure for solidified soil marine pile foundations, comprising a base column, a filling component, and a protective component. The filling component is located at the bottom of the base column, and the protective component is located outside the base column. The filling component includes a solidified soil plate fixedly connected to the bottom of the base column. A filling cavity is located at the inner end of the solidified soil plate, and a support member is fixedly installed at the inner end of the filling cavity. A scour pit is fixedly installed in the middle of the upper end of the solidified soil plate, and a fixing block is fixedly installed at the upper end of the solidified soil plate. This scour prevention structure for solidified soil marine pile foundations, through the installation of the filling component and the cooperation between the feed pipe and the solidified soil plate, allows for the injection of fluidized solidified soil into the interior of the base column and around its bottom. After the solidified soil is poured, it forms a connection between the base column and the filling cavity, preventing the base column from tilting and improving its stability, providing sufficient safety assurance during use. This technical solution focuses on scour prevention for vertical pile foundations.

[0003] The article "Analysis of the Protective Effect of Scour-Solidified Soil on Bridge Pile Groups" published in the June 2025 issue of the journal "Coastal Engineering" (Volume 44, Issue 2) discloses the construction method and technology for pumping solidified soil for bridge pile groups. Since the pile group is formed by the merging of multiple individual piles, the solidified soil pumped out from the outside in this technical solution achieves self-leveling through self-flow. This method depends on the flowability of the solidified soil. When the flowability is poor, the center of the intersection of the pile group will not be covered. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an anti-scour structure for marine pile foundations of solidified soil, which solves the problem of dead corners in the pumping of solidified soil mentioned in the background technology.

[0005] Technical solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a solidified soil marine pile foundation anti-scour structure, comprising semi-ring sleeves symmetrically fixed and spliced ​​on the outer surface of the pile foundation. An upper limit plate is provided inside the semi-ring sleeve, and a lower limit plate is provided inside the semi-ring sleeve. The surface of the lower limit plate has through holes penetrating the lower limit plate and the semi-ring sleeve. There are multiple through holes arranged in a ring array. One of the semi-ring sleeves is equipped with a feed inlet located between the upper limit plate and the lower limit plate.

[0007] Furthermore, the lower limit plate is parallel to the horizontal plane, and the through hole is perpendicular to the lower limit plate.

[0008] Furthermore, the feed inlet is located on the outside of the pile foundation, and the feed inlet is an upward-sloping bend.

[0009] Furthermore, the inner wall of the semi-annular sleeve is provided with a friction pad for pile foundation friction. The friction pad is divided into multiple upper and lower sections, which are spliced ​​together.

[0010] Furthermore, the two sides of the semi-annular sleeve are provided with wing plates, and the two symmetrical wing plates are fixedly connected by bolts after being closed. A sealing strip is provided between the contact surfaces of the wing plates and the contact surfaces of the semi-annular sleeve.

[0011] Furthermore, the outer surface of the semi-ring sleeve is provided with an energy dissipation hole above the upper limit plate, and the energy dissipation hole only penetrates the outer side of the semi-ring sleeve.

[0012] Furthermore, an energy dissipation plate is fixedly installed inside the semi-annular sleeve. The energy dissipation plate and the energy dissipation hole partially overlap in the direction of liquid flow. The energy dissipation plate is only fixedly connected to the inner ring of the semi-annular sleeve.

[0013] Furthermore, the semi-ring sleeve, upper limit plate, lower limit plate, feed port, wing plate, bolts and energy dissipation plate are all made of fiberglass, and the semi-ring sleeve, upper limit plate, lower limit plate, feed port, wing plate and energy dissipation plate are integrally formed.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. The solidified soil marine pile foundation anti-scour structure, by setting spliced ​​semi-ring sleeves on the outer surface of the pile foundation and opening annularly distributed through holes in the lower limiting plate, allows the solidified soil to be injected into the annular sleeve and diffuse outward along the center of the pile foundation, thereby avoiding the occurrence of pouring dead corners.

[0016] 2. The solidified soil marine pile foundation anti-scour structure has an energy dissipation hole on the outer surface of the semi-ring sleeve above the upper limit plate. The energy dissipation hole only penetrates the outer side of the semi-ring sleeve. An energy dissipation plate is fixedly installed inside the semi-ring sleeve. The energy dissipation plate and the energy dissipation hole partially overlap in the direction of liquid flow. The energy dissipation plate is only fixedly connected to the inner ring of the semi-ring sleeve. When the liquid flow impacts the energy dissipation plate, the energy dissipation plate vibrates, thereby achieving the function of energy dissipation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram showing the installation position of the device of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall device of this utility model;

[0019] Figure 3 This is a vertical sectional view of the present invention;

[0020] Figure 4 This is a cross-sectional view of the present invention.

[0021] Among them, 1. semi-ring sleeve; 2. upper limit plate; 3. lower limit plate; 4. through hole; 5. feed inlet; 6. friction pad; 7. wing plate; 8. bolt; 9. sealing strip; 10. energy dissipation hole; 11. energy dissipation plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] See Figures 1-4 A scour prevention structure for marine pile foundations with solidified soil includes a semi-ring sleeve 1 symmetrically fixed and spliced ​​on the outer surface of the pile foundation. An upper limit plate 2 and a lower limit plate 3 are provided inside the semi-ring sleeve 1. Through holes 4 penetrating the lower limit plate 3 and the semi-ring sleeve 1 are opened on the surface of the lower limit plate 3. There are multiple through holes 4 arranged in a ring array. One of the semi-ring sleeves 1 is equipped with a feed inlet 5, which is located between the upper limit plate 2 and the lower limit plate 3. By setting the spliced ​​semi-ring sleeve 1 on the outer surface of the pile foundation and opening the ring-shaped through holes 4 in the lower limit plate 3, the solidified soil can be injected into the semi-ring sleeve 1 and diffuse outward from the center of the pile foundation, thereby avoiding the occurrence of dead corners in the pouring process.

[0024] The lower limit plate 3 is parallel to the horizontal plane. Since some pile foundations are set at an angle, it is necessary to restrict the lower limit plate 3 to be parallel to the horizontal plane, but not parallel to the end face of the semi-ring sleeve 1, so that the solidified soil can flow evenly. The through hole 4 is perpendicular to the lower limit plate 3.

[0025] The feed inlet 5 is located on the outside of the pile foundation. The feed inlet 5 is an upward-sloping bend. This design can prevent water from directly entering the semi-ring sleeve 1 through the feed inlet 5 and impacting the solidified soil below.

[0026] The inner wall of the semi-ring sleeve 1 is provided with a friction pad 6 for pile foundation friction. The friction pad 6, after being compressed, can increase the friction between the friction pad and the pile foundation, thereby fixing the semi-ring sleeve 1 and also playing a role in shock absorption, reducing the vibration generated during energy dissipation that is transmitted to the pile foundation. The friction pad 6 is divided into multiple upper and lower sections, which are spliced ​​together. This way, if a single friction pad 6 deforms, it will not affect the other friction pads 6.

[0027] The two sides of the semi-ring sleeve 1 are provided with wing plates 7. The two symmetrical wing plates 7 are fixedly connected by bolts 8 after being closed. A sealing strip 9 is provided between the contact surfaces of the wing plates 7 and the contact surfaces of the semi-ring sleeve 1. This arrangement can ensure that the two semi-ring sleeves 1 are completely covered by the circumference of the pile foundation and reduce the possibility of solidified soil seeping from the connection surface.

[0028] The outer surface of the semi-ring sleeve 1 is provided with an energy dissipation hole 10 above the upper limit plate 2. The energy dissipation hole 10 only penetrates the outer side of the semi-ring sleeve 1. By setting the energy dissipation hole 10, energy can be dissipated to reduce the scouring of the pile foundation by the liquid flow.

[0029] An energy dissipation plate 11 is fixedly installed inside the semi-annular sleeve 1. The energy dissipation plate 11 and the energy dissipation hole 10 partially overlap in the direction of liquid flow. The energy dissipation plate 11 is only fixedly connected to the inner ring of the semi-annular sleeve 1. The energy dissipation plate 11 vibrates due to the impact of liquid flow, thereby achieving the function of energy dissipation.

[0030] The semi-ring sleeve 1, upper limit plate 2, lower limit plate 3, feed port 5, wing plate 7, bolt 8 and energy dissipation plate 11 are all made of fiberglass, which has corrosion resistance and can exist underwater for a long time. The semi-ring sleeve 1, upper limit plate 2, lower limit plate 3, feed port 5, wing plate 7 and energy dissipation plate 11 are integrally formed. This design can reduce splicing gaps. Of course, it needs to be designed individually according to the tilt angle and diameter of the single column.

[0031] During use, two symmetrical semi-ring sleeves 1 are installed on the surface of the pile foundation during construction, and the height of the semi-ring sleeves 1 is limited. Solidified soil is pumped into the semi-ring sleeves 1 through the inlet 5. Since the lower limit plate 3 restricts the solidified soil from flowing directly downwards, and through holes 4 distributed along the pile foundation are opened for material discharge, the solidified soil can diffuse outwards from the pile foundation as the center, thereby avoiding the problem of dead corners in the solidified soil coverage.

[0032] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A scour prevention structure for marine pile foundations in solidified soil, comprising semi-annular sleeves (1) symmetrically fixed and spliced ​​on the outer surface of the pile foundation, characterized in that: The semi-ring sleeve (1) is provided with an upper limit plate (2) inside and a lower limit plate (3) inside. The surface of the lower limit plate (3) is provided with a through hole (4) that penetrates the lower limit plate (3) and the semi-ring sleeve (1). There are multiple through holes (4) and the multiple through holes (4) are distributed in a ring array. One of the semi-ring sleeves (1) is equipped with a feed port (5) located between the upper limit plate (2) and the lower limit plate (3).

2. The anti-scour structure for solidified soil marine pile foundations according to claim 1, characterized in that: The lower limit plate (3) is parallel to the horizontal plane, and the through hole (4) is perpendicular to the lower limit plate (3).

3. The anti-scour structure for solidified soil marine pile foundations according to claim 1, characterized in that: The feed inlet (5) is located on the outside of the pile foundation, and the feed inlet (5) is an upward-sloping bend.

4. The anti-scour structure for solidified soil marine pile foundations according to claim 1, characterized in that: The inner wall of the semi-annular sleeve (1) is provided with a friction pad (6) for pile foundation friction. The friction pad (6) is divided into multiple upper and lower sections, which are spliced ​​together.

5. A solidified soil marine pile foundation scour prevention structure according to any one of claims 1-4, characterized in that: The semi-annular sleeve (1) is provided with wing plates (7) on both sides. The two symmetrical wing plates (7) are fixedly connected by bolts (8) after being closed. A sealing strip (9) is provided between the contact surfaces of the wing plates (7) and the contact surfaces of the semi-annular sleeve (1).

6. The anti-scour structure for solidified soil marine pile foundations according to claim 5, characterized in that: The outer surface of the semi-ring sleeve (1) is provided with an energy dissipation hole (10) above the upper limit plate (2), and the energy dissipation hole (10) only penetrates the outer side of the semi-ring sleeve (1).

7. The anti-scour structure for solidified soil marine pile foundations according to claim 6, characterized in that: An energy dissipation plate (11) is fixedly installed inside the semi-annular sleeve (1). The energy dissipation plate (11) and the energy dissipation hole (10) partially overlap in the direction of liquid flow. The energy dissipation plate (11) is only fixedly connected to the inner ring of the semi-annular sleeve (1).

8. A solidified soil marine pile foundation scour prevention structure according to claim 6 or 7, characterized in that: The semi-ring sleeve (1), upper limit plate (2), lower limit plate (3), feed port (5), wing plate (7), bolt (8) and energy dissipation plate (11) are all made of fiberglass, and the semi-ring sleeve (1), upper limit plate (2), lower limit plate (3), feed port (5), wing plate (7) and energy dissipation plate (11) are integrally formed.

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