A protection structure for retaining piles in the construction of deep foundation pits in coastal silt areas

Abstract

This application relates to the technical field of supporting pile protection structures, and particularly to a supporting pile protection structure for deep foundation pit construction in coastal silt areas, which includes a first enclosure steel plate, a second enclosure steel plate, a reinforcement component, an anti-rotation component, and a suspension component. One end of the first enclosure steel plate and the second enclosure steel plate are perpendicularly butted with each other and enclose a rectangular structure. The reinforcement component is used to reinforce the rectangular enclosure structure formed by the first enclosure steel plate and the second enclosure steel plate. The reinforcement component is arranged inside the rectangular structure. The anti-rotation component is arranged outside the first enclosure steel plate and the second enclosure steel plate, and the anti-rotation component is used to prevent the enclosure structure from sinking and rotating. The enclosure structure formed by combining the first enclosure steel plate and the second enclosure steel plate is used to separate and limit the silt, avoiding the occurrence of landslides during the excavation of the bearing platform pit soil, and also avoiding the need to reinforce the soil before excavation, which is simple and efficient.

Description

Technical Field

[0001] The present application relates to the technical field of retaining pile protection structures, and particularly to a retaining pile protection structure for deep foundation pit construction in coastal silt areas. Background Technique

[0002] Currently in engineering, the construction process commonly adopted for pile cap construction is: pile cap excavation → brick formwork masonry → cushion pouring → steel bar installation → pile cap concrete pouring;

[0003] For pile cap excavation, a backhoe hydraulic excavator is usually used. Before excavation, based on the ground elevation and pile cap bottom elevation at the pile cap position, a foundation pit excavation plan is designed and drawn, and then through total station on-site positioning, the pile cap excavation boundary is marked with lime powder. After the soil is excavated, it is stacked on-site or transported away in a timely manner. The excavation depth is controlled by full-time personnel, and 20 cm is left at the base during excavation for manual shoveling and leveling to the design elevation;

[0004] After the excavation is completed, brick formwork masonry is carried out. Usually, autoclaved fly ash bricks and cement mortar are used to masonry the brick formwork according to the shape and size of the pile cap. The brick formwork serves as a form of installation for pile cap concrete pouring and also plays a role in retaining soil. After the brick formwork masonry is completed, pile cap steel bar installation and concrete pouring are carried out.

[0005] In related technologies, due to the development of a large area of silt soft soil in some areas during the Quaternary geological period, there is often a 15 - 20 - meter - thick silt layer under a 2 - 3 - meter - thick plain fill. At this time, the basement and the pile top pile cap elevation are both in the silt layer. Since in the silt layer, especially in the fluid - plastic silt layer with a high water content, the silt has a large fluidity, it is easy to collapse during the pile cap earth excavation process, and it is difficult to excavate the pile cap pit into a formed shape, resulting in the inability to masonry the brick formwork. Traditional construction methods require soil reinforcement before excavation, which greatly increases the construction cost and reduces the construction efficiency. Therefore, there is an urgent need for a retaining pile protection structure for deep foundation pit construction in coastal silt areas to solve this problem. Summary of the Invention

[0006] In order to solve the problem that soil reinforcement is required before excavating the pile cap pit in the silt layer, which greatly increases the construction cost and reduces the construction efficiency, the present application provides a retaining pile protection structure for deep foundation pit construction in coastal silt areas.

[0007] The retaining pile protection structure for deep foundation pit construction in coastal silt areas provided by the present application adopts the following technical solutions:

[0008] A retaining pile protection structure for deep foundation pit construction in coastal silt areas, comprising:

[0009] The first enclosing steel plate and the second enclosing steel plate are used to form an enclosing structure. One end of the first enclosing steel plate and the second enclosing steel plate are perpendicularly butted against each other, and the first enclosing steel plate and the second enclosing steel plate are symmetrically arranged and enclose to form a rectangular structure;

[0010] The reinforcement component is used to reinforce the rectangular enclosing structure formed by the first enclosing steel plate and the second enclosing steel plate, and the reinforcement component is arranged inside the rectangular structure;

[0011] The anti-rotation component is used to prevent the enclosing structure from sinking and rotating, and the anti-rotation component is arranged outside the first enclosing steel plate and the second enclosing steel plate;

[0012] The suspension component is used to cooperate with an external tower crane. The suspension component includes a fixed shell and limit claws. The fixed shell is respectively fixed at the top centers of the first enclosing steel plate and the second enclosing steel plate. The limit claws are rotatably connected inside the fixed shell and are symmetrically arranged.

[0013] By adopting the above technical solution, the enclosing structure formed by combining the first enclosing steel plate and the second enclosing steel plate is used to separate and limit the silt, avoiding the occurrence of landslides during the excavation of the foundation pit of the bearing platform, and at the same time avoiding the need to reinforce the soil body before excavation, which is simple and efficient. At the same time, the structural strength of the enclosing structure formed by the first enclosing steel plate and the second enclosing steel plate is improved through the reinforcement component;

[0014] During installation, through the setting of the suspension component, the external tower crane can be quickly connected to the enclosing structure and suspended to the designated position, and at the same time, the stability of the connection is ensured during suspension, avoiding falling. At the same time, through the setting of the anti-rotation component, the enclosing structure is not easy to sink and rotate;

[0015] Through the combined setting of the reinforcement component, the anti-rotation component and the suspension component, the problem of the need to reinforce the soil body before excavating the foundation pit of the bearing platform in the silt layer is effectively avoided, greatly increasing the construction cost and reducing the construction efficiency.

[0016] Optionally, the reinforcement component includes transverse ribs and vertical ribs. The transverse ribs and the vertical ribs are respectively welded and fixed on the inner side of the enclosing structure formed by the first enclosing steel plate and the second enclosing steel plate, and the transverse ribs and the vertical ribs are perpendicular to each other and welded and fixed.

[0017] By adopting the above technical solution, the grid structure formed by the transverse ribs and the vertical ribs is used to improve the structural strength of the first enclosing steel plate and the second enclosing steel plate itself, avoiding situations such as fracture due to excessive stress, and enabling it to better resist the lateral pressure of the silt layer.

[0018] Optionally, the reinforcement assembly further includes a corner brace, which is welded and fixed between two adjacent transverse ribs, and the corner brace, the first enclosure steel plate, and the second enclosure steel plate together form a triangular stable structure.

[0019] By adopting the above technical solution, the angle brace is used to improve the structural strength and stability of the connection between the first enclosure steel plate and the second enclosure steel plate.

[0020] Optionally, the anti-rotation assembly includes a vertical wing plate and a transverse wing plate, the vertical wing plate is vertically connected to one side of the first enclosure steel plate, the transverse wing plate is horizontally connected to the top of the side wall of the second enclosure steel plate, and the vertical wing plate and the transverse wing plate are respectively vertically connected to the first enclosure steel plate and the second enclosure steel plate.

[0021] By adopting the above technical solution and utilizing the vertical wing plates and the horizontal wing plates, the structure as a whole is not easy to sink or rotate.

[0022] Optionally, the anti-rotation assembly further includes a diagonal brace, and the diagonal brace is fixed between the wing plate and the surrounding steel plate.

[0023] By adopting the above technical solution, the diagonal brace is used to improve the structural strength and stability of the connection between the wing plate and the enclosing steel plate.

[0024] Optionally, a threaded rod is provided on one side of the vertical wing plate and the transverse wing plate, and reserved holes are provided on the first enclosure steel plate and the second enclosure steel plate, the threaded rod passes through the reserved holes, and nuts are screwed on the threaded rod.

[0025] By adopting the above technical solution, the wing plate and the surrounding steel plate can be quickly disassembled and assembled by using the threaded rod.

[0026] Optionally, the suspension assembly also includes a linkage rod, an adjustment rod, a docking rod and a slide groove, the adjustment rod is rotatably connected in the fixed shell, and part of the adjustment rod protrudes from the fixed shell, the slide groove is arranged through the adjustment rod, the docking rod is rotatably connected between two adjacent adjustment rods, the other end of the adjustment rod is rotatably connected to the limit claw, and the docking rod is slidably engaged in the slide groove.

[0027] By adopting the above technical solution, the rotation of the adjusting rod drives the docking rod to be linked in the slide groove, and then the docking rod drives the linkage rod and the limit claw to be quickly linked.

[0028] Optionally, a limiting groove is provided through the fixed shell, and one end of the docking rod is slidably engaged in the limiting groove.

[0029] By adopting the above technical solution, the butt joint rod is limited by the limiting groove so that it can slide in a directional manner.

[0030] Optionally, a first return spring is arranged between the adjusting rod and the fixed shell.

[0031] By adopting the above technical solution, the elastic force of the first return spring enables the adjusting rod to quickly return to its original position.

[0032] Optionally, a round rod is fixed on the adjusting rod, and the fixed shell is rotatably connected to the fixed shell through the round rod. A ratchet wheel is coaxially fixed at one end of the round rod. The ratchet wheel is located outside the fixed shell. A pawl is rotatably connected to the outer wall of the fixed shell. One end of the pawl abuts against the ratchet wheel, and a second return spring is arranged between the pawl and the fixed shell.

[0033] By adopting the above technical solution, the ratchet wheel and the pawl are used to limit the adjusting rod, avoiding the opening of the limiting claw caused by the rotation of the adjusting rod during the suspension process.

[0034] In summary, the present application includes at least one of the following beneficial technical effects:

[0035] 1. The support pile protection structure for deep foundation pit construction in coastal silt areas of the present application is set as a combination of a first retaining steel plate, a second retaining steel plate, a reinforcement component, an anti-rotation component, and a suspension component, which solves to a certain extent the problem in the related technology that the soil needs to be reinforced before excavating the caisson pit in the silt layer, greatly increasing the construction cost and reducing the construction efficiency.

[0036] 2. By using the reinforcement component, the overall stability of the structure is good, the production, installation, and movement are convenient, the cost is low, it can be recycled, the cost is saved, and the construction efficiency is high.

[0037] 3. By using the longitudinal and transverse wing plates arranged in the anti-rotation component, the retaining structure is not easy to sink and rotate, greatly increasing the stability of the retaining device in the silt. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is an external structural schematic diagram of a support pile protection structure for deep foundation pit construction in coastal silt areas in this embodiment.

[0039] Figure 2 is in this embodiment Figure 1 The enlarged view of part A.

[0040] Figure 3 is a split structural schematic diagram of the transverse wing plate in this embodiment.

[0041] Figure 4 is an external detailed structural schematic diagram of the suspension component in this embodiment.

[0042] Figure 5It is a schematic diagram of the internal connection structure of the fixed shell in this embodiment.

[0043] Figure 6 Schematic diagram of the detailed structure of the ratchet connection in this embodiment.

[0044] Description of reference numerals:

[0045] 1. The first enclosure steel plate; 2. The second enclosure steel plate; 3. The reinforcement assembly; 31. The horizontal ribs; 32. The vertical ribs; 33. The angle brace; 4. The anti-rotation assembly; 41. The vertical wing plate; 42. The horizontal wing plate; 43. The diagonal brace; 44. The threaded rod; 45. The nut; 5. The suspension assembly; 51. The fixed shell; 52. The limit claw; 53. The linkage rod; 54. The adjustment rod; 55. The docking rod; 56. The slide groove; 57. The limit groove; 58. The first return spring; 59. The ratchet; 510. The ratchet; 511. The second return spring. DETAILED DESCRIPTION

[0046] The following is combined with Figures 1-6 This application is described in further detail.

[0047] The embodiment of the present application discloses a support pile protection structure for deep foundation pit construction in coastal silt areas.

[0048] It should be noted that, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and 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 therefore should not be understood as a limitation on the present invention.

[0049] Reference Figure 1, A support pile protection structure for deep foundation pit construction in coastal silt areas, including a first retaining steel plate 1, a second retaining steel plate 2, a reinforcement component 3, an anti-rotation component 4, and a suspension component 5. One end of the first retaining steel plate 1 and the second retaining steel plate 2 are perpendicularly butted with each other and enclose a rectangular structure. The reinforcement component 3 is used to reinforce the rectangular retaining structure formed by the first retaining steel plate 1 and the second retaining steel plate 2. The reinforcement component 3 is arranged inside the rectangular structure. The anti-rotation component 4 is arranged outside the first retaining steel plate 1 and the second retaining steel plate 2, and the anti-rotation component 4 is used to prevent the retaining structure from sinking and rotating. The suspension component 5 is used to cooperate with an external tower crane and is respectively arranged on the tops of the first retaining steel plate 1 and the second retaining steel plate 2. The retaining structure formed by combining the first retaining steel plate 1 and the second retaining steel plate 2 is used to separate and limit the silt, avoiding landslides during the excavation of the foundation pit soil, and also avoiding the need to reinforce the soil before excavation, which is simple and efficient.

[0050] In the embodiment of the present application, regarding the first retaining steel plate 1 and the second retaining steel plate 2, they are made of high-strength steel. In other embodiments, high-strength plates or high-strength aluminum alloy materials can also be used to make the retaining plates, which are also preferred embodiments of the present application. At the same time, the surfaces of the first retaining steel plate 1 and the second retaining steel plate 2 are integrally coated with anti-corrosion paint to improve the overall service life of the structure.

[0051] At the same time, for the structure enclosed by the first retaining steel plate 1 and the second retaining steel plate 2, in the embodiment of the present application, it is set as a rectangle. In other embodiments, the structure enclosed by the first retaining steel plate 1 and the second retaining steel plate 2 can also be set into other shapes such as triangles and polygons, which are also preferred embodiments of the present application.

[0052] Specifically, referring to Figure 1 and Figure 2 , in the embodiment of the present application, the reinforcement component 3 includes a horizontal rib 31, a vertical rib 32, and a corner brace 33. The cross-shaped structure formed by the horizontal rib 31 and the vertical rib 32 is used to improve the structural strength of the first retaining steel plate 1 and the second retaining steel plate 2 themselves, avoiding situations such as fracture due to excessive stress, enabling it to better resist the lateral pressure of the silt layer. At the same time, the corner brace 33 is used to improve the structural strength and stability of the connection between the first retaining steel plate 1 and the second retaining steel plate 2.

[0053] Furthermore, in the embodiments of the present application, the horizontal ribs 31 and the vertical ribs 32 are respectively welded and fixed to the inner side of the enclosure structure formed by the first enclosure steel plate 1 and the second enclosure steel plate 2, and the horizontal ribs 31 and the vertical ribs 32 are perpendicular to each other and welded and fixed. The corner braces 33 are welded and fixed between two adjacent horizontal ribs 31, and the corner braces 33, the first enclosure steel plate 1 and the second enclosure steel plate 2 together form a triangular stable structure. In other embodiments, the horizontal ribs 31 and the vertical ribs 32 can also be mechanically connected by screws, bolts, etc., which are also embodiments that the present application can implement.

[0054] Specifically, referring to Figure 3 , in the embodiments of the present application regarding the anti-rotation component 4, the anti-rotation component 4 includes a vertical wing plate 41 and a horizontal wing plate 42, and the use of the vertical wing plate 41 and the horizontal wing plate 42 makes the overall structure not easy to sink and rotate.

[0055] The vertical wing plate 41 is vertically connected to one side of the first enclosure steel plate 1, the horizontal wing plate 42 is horizontally connected to the top of the side wall of the second enclosure steel plate 2, and the vertical wing plate 41 and the horizontal wing plate 42 are respectively perpendicularly connected to the first enclosure steel plate 1 and the second enclosure steel plate 2.

[0056] It should be noted here that for the angles between the vertical wing plate 41, the horizontal wing plate 42 and the first enclosure steel plate 1 and the second enclosure steel plate 2, it is not necessarily to adopt the perpendicular connection method in the embodiments of the present application. Connecting at other angles is also a preferred embodiment of the present application.

[0057] Furthermore, threaded rods 44 are provided on one side of both the vertical wing plate 41 and the horizontal wing plate 42, and reserved holes are provided on the first enclosure steel plate 1 and the second enclosure steel plate 2. The threaded rods 44 pass through the reserved holes, and nuts 45 are screwed and connected to the threaded rods 44, and the use of the threaded rods 44 enables the wing plates to be quickly disassembled and assembled with the enclosure steel plates.

[0058] Furthermore, the anti-rotation component 4 further includes a diagonal brace 43, and the diagonal brace 43 is fixed between the wing plate and the enclosure steel plate, and the use of the diagonal brace 43 improves the structural strength and stability of the connection between the wing plate and the enclosure steel plate.

[0059] Specifically, referring to Figure 4 and Figure 5 , in the embodiments of the present application, the suspension component 5 includes a fixed shell 51, a limit claw 52, a linkage rod 53, an adjustment rod 54, a docking rod 55, a chute 56 and a limit groove 57. Through the setting of the suspension component 5, an external tower crane can quickly connect with the enclosure structure and suspend it to a designated position, and also ensure the stability of the connection while suspending.

[0060] Furthermore, the fixed shell 51 is respectively fixed at the top center of the first enclosure steel plate 1 and the second enclosure steel plate 2, the limiting claw 52 is rotatably connected in the fixed shell 51 and symmetrically arranged, the adjusting rod 54 is rotatably connected in the fixed shell 51, and part of the adjusting rod 54 protrudes from the fixed shell 51, the sliding groove 56 is penetrated on the adjusting rod 54, the docking rod 55 is rotatably connected between two adjacent adjusting rods 54, the other end of the adjusting rod 54 is rotatably connected to the limiting claw 52, and the docking rod 55 is slidably engaged in the sliding groove 56, and a limiting groove 57 is penetrated on the fixed shell 51, and one end of the docking rod 55 is slidably engaged in the limiting groove 57.

[0061] The fixed shell 51 mentioned above can provide support and connection points for the limiting claw 52 and the adjusting rod 54; the limiting claw 52 cooperates with the external tower crane to ensure the stability of the suspension system; the adjusting rod 54 provides adjustment and positioning functions, which are operated through the protruding part; and the slide groove 56 provides a sliding path for the docking rod 55, so that it can be flexibly adjusted; the docking rod 55 connects the two adjusting rods 54 to achieve synchronous adjustment and stability; the limiting groove 57 provides a sliding and clamping position for the docking rod 55 to ensure its stability during the adjustment process.

[0062] In general, through the reasonable layout and connection of the fixed shell 51, the limiting claw 52, the adjusting rod 54, the sliding groove 56, the docking rod 55 and the limiting groove 57, a suspension system with high stability, convenient operation and flexible adjustment is provided, ensuring that adjustments and positioning can be performed quickly and safely during the construction process, thereby improving the safety and efficiency of the overall construction.

[0063] Further, see Figure 5 and Figure 6 A first return spring 58 is provided between the adjusting rod 54 and the fixed shell 51, and at the same time a round rod is fixed on the adjusting rod 54, and the fixed shell 51 is rotatably connected to the fixed shell 51 through the round rod, and a ratchet 59 is coaxially fixed at one end of the round rod, the ratchet 59 is located outside the fixed shell 51, and a pawl 510 is rotatably connected to the outer wall of the fixed shell 51, one end of the pawl 510 is abutted against the ratchet 59, and a second return spring 511 is provided between the pawl 510 and the fixed shell 51, the elastic force of the first return spring 58 enables the adjusting rod 54 to be quickly reset, and at the same time the adjusting rod 54 is limited by the ratchet 59 and the pawl 510, so as to prevent the limiting claw 52 from opening due to the rotation of the adjusting rod 54 during the suspension process.

[0064] That is to say, the elastic force provided by the first return spring 58 enables the adjustment rod 54 to quickly return to the initial position after operation. This function ensures that the adjustment rod 54 is always in a ready state during use, which is convenient for the next operation and improves work efficiency. The design of the ratchet 59 and the pawl 510 provides a one-way limiting mechanism. When the adjustment rod 54 rotates, the engagement of the ratchet 59 and the pawl 510 ensures that the adjustment rod 54 can only rotate in one direction to prevent reverse movement. In this way, during the suspension process, even if the external force causes the adjustment rod 54 to be impacted, the limiting claw 52 will not open due to reverse rotation, thereby ensuring the stability and safety of the suspension system. At the same time, the limiting mechanism of the ratchet 59 and the pawl 510 effectively prevents the adjustment rod 54 from accidentally rotating due to external force or vibration during the suspension process. In general, through the above-mentioned settings, not only the operating efficiency and convenience of the adjustment rod 54 are improved, but also the safety and reliability of the system are greatly enhanced, ensuring stable and reliable operation in a complex construction environment.

[0065] The implementation principle of the supporting pile protection structure for deep foundation pit construction in coastal mud belts in the embodiment of the present application is as follows: firstly, the structure is designed and manufactured according to the shape and size of the cap, and the first enclosure steel plate 1 and the second enclosure steel plate 2 are appropriately cut or welded, and then the two are combined and welded to form a rectangular structure, and then the reinforcement component 3, the anti-rotation component 4 and the suspension component 5 are respectively fixed on the rectangular structure;

[0066] Then, according to the ground elevation of the pedestal position and the elevation of the pedestal bottom, the foundation pit excavation plan is designed and drawn, and then the total station is used for on-site positioning, and the pedestal excavation edge line is sprinkled with lime powder. The device is hoisted to the pedestal excavation point by the tower crane in combination with the suspension assembly 5, and the position and direction of the device are adjusted manually;

[0067] After being placed, the ratchet 510 is rotated to separate it from the ratchet wheel 59. At this time, the adjusting rod 54 is rotated to drive the docking rod 55 to be linked, and then the linkage rod 53 is driven to be linked synchronously. The limiting claw 52 is opened through the linkage rod 53, so that the structure can be quickly separated from the tower crane, and then the excavator bucket is used to press it into the soil layer to form a protective structure;

[0068] An excavator is used to dig out the soil in the retaining structure and excavate to the bottom of the pedestal, and then brick membrane is laid. After the laying is completed, the device is pulled out by the excavator and moved to the next pedestal position for continued use.

[0069] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A support pile protection structure for deep foundation pit construction in coastal silt areas, characterized in that Comprising: A first enclosing steel plate (1) and a second enclosing steel plate (2), which are used to form an enclosing structure. One end of the first enclosing steel plate (1) and the second enclosing steel plate (2) are perpendicularly butted against each other, and the first enclosing steel plate (1) and the second enclosing steel plate (2) are symmetrically arranged and enclose to form a rectangular structure; A reinforcement component (3), which is used to reinforce the rectangular enclosing structure formed by the first enclosing steel plate (1) and the second enclosing steel plate (2), and the reinforcement component (3) is arranged inside the rectangular structure; An anti-rotation component (4), which is used to prevent the enclosing structure from sinking and rotating, and the anti-rotation component (4) is arranged outside the first enclosing steel plate (1) and the second enclosing steel plate (2); A suspension component (5), which is used to cooperate with an external tower crane. The suspension component (5) includes a fixed shell (51) and a limit claw (52). The fixed shell (51) is respectively fixed at the top centers of the first enclosing steel plate (1) and the second enclosing steel plate (2), and the limit claw (52) is rotatably connected inside the fixed shell (51) and is symmetrically arranged; The suspension component (5) further includes a linkage rod (53), an adjustment rod (54), a docking rod (55) and a chute (56). The adjustment rod (54) is rotatably connected inside the fixed shell (51), and a part of the adjustment rod (54) protrudes from the fixed shell (51). The chute (56) is penetrated through the adjustment rod (54). The docking rod (55) is rotatably connected between two adjacent adjustment rods (54). The other end of the adjustment rod (54) is rotatably connected to the limit claw (52), and the docking rod (55) is slidably clamped in the chute (56); A limit groove (57) is penetrated through the fixed shell (51), and one end of the docking rod (55) is slidably clamped in the limit groove (57); A first return spring (58) is arranged between the adjustment rod (54) and the fixed shell (51); A round rod is fixed on the adjustment rod (54), and the fixed shell (51) is rotatably connected to the fixed shell (51) through the round rod, and a ratchet wheel (59) is coaxially fixed at one end of the round rod. The ratchet wheel (59) is located outside the fixed shell (51). A pawl (510) is rotatably connected to the outer wall of the fixed shell (51). One end of the pawl (510) abuts against the ratchet wheel (59), and a second return spring (511) is arranged between the pawl (510) and the fixed shell (51); The anti-rotation component (4) includes a vertical wing plate (41) and a horizontal wing plate (42). The vertical wing plate (41) is vertically connected to one side of the first enclosing steel plate (1), and the horizontal wing plate (42) is horizontally connected to the top of the side wall of the second enclosing steel plate (2), and the vertical wing plate (41) and the horizontal wing plate (42) are respectively perpendicularly connected to the first enclosing steel plate (1) and the second enclosing steel plate (2); The anti-rotation component (4) further includes a diagonal brace (43), and the diagonal brace (43) is fixed between the wing plate and the enclosing steel plate.

2. The supporting pile protection structure for deep foundation pit construction in coastal silt area according to claim 1, characterized in that, The reinforcing component (3) includes a transverse rib (31) and a vertical rib (32). The transverse rib (31) and the vertical rib (32) are respectively welded and fixed to the inner side of the enclosure structure formed by the first enclosure steel plate (1) and the second enclosure steel plate (2), and the transverse rib (31) and the vertical rib (32) are perpendicular to each other and welded and fixed.

3. The retaining pile protection structure for deep foundation pit construction in coastal silt area according to claim 2, characterized in that, The reinforcing component (3) further includes a corner brace (33). The corner brace (33) is welded and fixed between two adjacent transverse ribs (31), and the corner brace (33) and the first enclosure steel plate (1) and the second enclosure steel plate (2) together form a triangular stable structure.

4. A support pile protection structure for deep foundation pit construction in coastal silt areas according to claim 1, characterized in that, One side of the vertical wing plate (41) and the transverse wing plate (42) is provided with a threaded rod (44), and a reserved hole is provided on the first enclosure steel plate (1) and the second enclosure steel plate (2). The threaded rod (44) passes through the reserved hole, and a nut (45) is screwed and connected to the threaded rod (44).

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