Pile foundation protection assembly and bridge pile foundation structure

Abstract

This utility model discloses a pile foundation protection component and a bridge pile foundation structure, relating to the field of bridge construction technology. The pile foundation protection component includes multiple protective plates and multiple limiting members. Each protective plate has a contact side for fitting the pile foundation body and a protective side opposite to the contact side in its thickness direction. The contact sides of the multiple protective plates enclose a vertically penetrating protective cavity. Each protective plate is provided with at least one sliding hole extending vertically and penetrating its upper and lower sides. The limiting member includes a first limiting rod slidably disposed vertically in relation to the corresponding sliding hole, the lower end of the first limiting rod being tapered. In this utility model's technical solution, the protective cavity formed by multiple protective plates protects the pile foundation body, and the sliding limiting design of the tapered first limiting rod achieves a tight fit and reliable fixation between the protective structure and the pile foundation body.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and in particular to a pile foundation protection component and a bridge pile foundation structure. Background Technology

[0002] In the bridge construction industry, bridge pile foundations, as crucial load-bearing components of bridge structures, directly impact the overall safety performance of the bridge due to their stability and durability. Traditional pile foundation protection primarily employs concrete encapsulation. While this method provides physical protection for the foundation, it has revealed numerous shortcomings in practical applications. The concrete protective layer is prone to shrinkage cracks under long-term environmental influences, leading to a gradual decline in its protective performance. Furthermore, in soft soil foundations or complex terrain conditions, traditional concrete protective structures struggle to accommodate pile foundation settlement or displacement, affecting overall stability. Utility Model Content

[0003] The main purpose of this utility model is to propose a pile foundation protection component and a bridge pile foundation structure, which aims to at least solve the technical problem in related technologies that it is difficult to adapt to pile foundation settlement or displacement, thus affecting the overall stability.

[0004] To achieve the above objectives, this utility model proposes a pile foundation protection component, comprising:

[0005] Multiple protective plates, each protective plate having an adhesive side for adhering to the pile body and a protective side opposite to the adhesive side in its thickness direction, the adhesive sides of the multiple protective plates enclosing a vertically penetrating protective cavity, each protective plate having at least one sliding hole extending vertically and penetrating its upper and lower sides; and,

[0006] Multiple limiting components, each including a first limiting rod that is slidably disposed in the vertical direction corresponding to the sliding hole, the lower end of the first limiting rod being tapered.

[0007] In one embodiment, the upper end of the first limiting rod protrudes from the upper end of the sliding hole and is provided with a blocking part, the outer dimensions of which are larger than the cross-sectional dimensions of the sliding hole.

[0008] In one embodiment, the blocking portion is provided in the form of a flat plate.

[0009] In one embodiment, the limiting member further includes a second limiting rod that moves along the thickness direction of the protective plate, the end of the second limiting rod away from the mating side being tapered.

[0010] In one embodiment, the protective side of the protective plate is provided with a guide hole extending along its thickness direction, and the second limiting rod is slidably disposed in the guide hole.

[0011] In one embodiment, the limiting member further includes a transmission structure that drives the first limiting rod and the second limiting rod to move away from the contact side when the first limiting rod moves downward.

[0012] In one embodiment, a second clearance hole is provided on the upper sidewall of the guide hole;

[0013] The transmission structure includes a connecting rod, one end of which is hinged to the first limiting rod, and the other end passes through the second clearance hole to be hinged to the second limiting rod.

[0014] In one embodiment, the first limiting rod is provided with a first clearance hole, and the connecting rod is connected to the upper side wall of the first clearance hole.

[0015] In one embodiment, a limiting hole adapted to the second limiting rod is provided on one side wall of the sliding hole near the fitting side.

[0016] This utility model also proposes a bridge pile foundation structure, including a pile foundation protection component and a pile foundation body, wherein the pile foundation protection component includes:

[0017] Multiple protective plates, each protective plate having an adhesive side for adhering to the pile body and a protective side opposite to the adhesive side in its thickness direction, the adhesive sides of the multiple protective plates enclosing a vertically penetrating protective cavity, each protective plate having at least one sliding hole extending vertically and penetrating its upper and lower sides; and,

[0018] Multiple limiting components, each limiting component including a first limiting rod that is slidably disposed in the vertical direction corresponding to the sliding hole, the lower end of the first limiting rod being tapered;

[0019] The pile body is located in the protective cavity.

[0020] In the technical solution of this utility model, the pile foundation protection component includes multiple protective plates and multiple limiting members. The contact sides of the multiple protective plates enclose and form a protective cavity that extends vertically. The limiting member includes a first limiting rod that is slidably disposed in the vertical direction corresponding to the sliding hole. The lower end of the first limiting rod is tapered. With this arrangement, the pile foundation body is protected by the protective cavity formed by the multiple protective plates. Combined with the sliding limiting design of the tapered first limiting rod, the protective structure is tightly fitted and reliably fixed to the pile foundation body. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 A schematic diagram of an embodiment of the bridge pile foundation structure provided by this utility model;

[0023] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the central pile foundation protection component;

[0024] Figure 3 for Figure 2 Enlarged diagram of part A in the diagram;

[0025] Figure 4 for Figure 2 Right view structural schematic diagram of the central pile foundation protection component;

[0026] Figure 5 for Figure 4 Enlarged schematic diagram of part B in the diagram.

[0027] Explanation of icon numbers:

[0028] 1000. Bridge pile foundation structure; 100. Pile foundation protection components; 1. Protective plate; 11. Fitting side; 12. Protective side; 13. Sliding hole; 14. Guide hole; 15. Second clearance hole; 16. Limiting hole; 2. Limiting component; 21. First limiting rod; 211. Blocking part; 212. First clearance hole; 22. Second limiting rod; 23. Transmission structure; 231. Connecting rod; 200. Pile foundation body.

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] 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 scope of protection of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] In existing technologies, concrete is often used to form protective structures during bridge pile foundation construction. However, concrete protective structures are prone to cracking due to environmental erosion or physical impact, causing their protective effect to gradually weaken over time. In soft soil foundations or complex terrain conditions, traditional concrete protective structures struggle to adapt to pile foundation settlement or displacement, affecting overall stability.

[0034] The main purpose of this utility model is to propose a pile foundation protection component and a bridge pile foundation structure, which aims to at least solve the technical problem in related technologies that it is difficult to adapt to pile foundation settlement or displacement, thus affecting the overall stability.

[0035] Please see Figures 1 to 3 In one embodiment of the present invention, the pile foundation protection component 100 includes a plurality of protective plates 1 and a plurality of limiting members 2. The protective plates 1 have a fitting side 11 for fitting the pile foundation body 200 and a protective side 12 opposite to the fitting side 11 in the thickness direction. The fitting sides 11 of the plurality of protective plates 1 surround to form a protective cavity that runs vertically through the pile. Each protective plate 1 is provided with at least one sliding hole 13 that extends vertically and passes through its upper and lower sides. The limiting member 2 includes a first limiting rod 21 that slides vertically in the direction corresponding to the sliding hole 13. The lower end of the first limiting rod 21 is tapered.

[0036] In the technical solution of this utility model, the pile foundation protection component 100 includes multiple protective plates 1 and multiple limiting members 2. The contact sides 11 of the multiple protective plates 1 enclose and form a protective cavity that extends vertically. The limiting member 2 includes a first limiting rod 21 that is slidably disposed in the vertical direction corresponding to the sliding hole 13. The lower end of the first limiting rod 21 is tapered. With this configuration, the pile foundation body 200 is protected by the protective cavity formed by the multiple protective plates 1. Combined with the sliding limiting design of the tapered first limiting rod 21, the protective structure is tightly fitted and reliably fixed to the pile foundation body 200.

[0037] The protective cavity refers to a columnar space formed by multiple protective plates 1, which can be achieved through a combination of detachably connected plates, used to enclose the pile body 200. The sliding hole 13 refers to a through-slot penetrating the upper and lower ends of the protective plate 1, which can be rectangular or elliptical, used to guide the vertical movement of the first limiting rod 21. The tapered lower end of the first limiting rod 21 refers to the bottom of the rod narrowing into a pointed cone shape, which can be formed by cutting steel, facilitating insertion into the foundation for anchoring.

[0038] Specifically, the protective plates 1 are spliced ​​together by their mating sides 11 to form an annular protective cavity, within which the pile foundation 200 is placed. During construction, multiple protective plates 1 are arranged around the pile foundation, and the positions of the protective plates 1 are adjusted so that the mating sides 11 are tightly attached to the pile foundation surface. When the first limiting rod 21 moves downward along the sliding hole 13, its conical end penetrates the foundation soil layer, fixing the position of the protective plate 1 through friction. When the pile foundation settles, the protective structure formed by splicing multiple protective plates 1 is less prone to cracking, avoiding structural damage caused by rigid connections.

[0039] Compared to existing technologies, traditional concrete protective layers and pile foundations are integrally cast structures, which cannot withstand relative displacement between the pile foundation and the ground. This solution, through the cooperation of a split protective plate 1 and a sliding limiting rod, allows for moderate displacement while ensuring the stability of the protective structure. The conical limiting rod forms multi-point anchorage after being inserted into the soil layer, providing stronger resistance to overturning compared to concrete blocks.

[0040] This application further proposes that the upper end of the first limiting rod 21 protrudes from the upper end of the sliding hole 13 and is provided with a blocking part 211, the outer dimensions of the blocking part 211 being larger than the cross-sectional dimensions of the sliding hole 13.

[0041] The blocking part 211 refers to the structure fixed to the upper end of the first limiting rod 21. Its size is larger than the cross-section of the sliding hole 13. Specifically, it can be a welded or integrally formed flat plate, boss or flange structure to prevent the first limiting rod 21 from coming out of the sliding hole 13.

[0042] Specifically, when the first limiting rod 21 is inserted into the sliding hole 13, its conical lower end can penetrate the soil to achieve anchoring. Since the blocking part 211 is larger than the sliding hole 13, it can abut against the outer side of the upper end of the sliding hole 13 after installation, limiting the downward sliding limit position of the first limiting rod 21, indicating whether the first limiting rod 21 is installed in place. At the same time, the blocking part 211 can also reduce the possibility of external impurities entering the sliding hole 13.

[0043] The blocking part 211 may be spherical, hook-shaped, or other complex in shape, but such structures suffer from high processing costs and insufficient installation stability. In this embodiment of the invention, the blocking part 211 is flat. The flat blocking part 211 reduces manufacturing costs while ensuring the limiting function. Furthermore, it is more convenient when external machinery or workers hammer the first limiting rod 21 into the soil.

[0044] Please continue to refer to this. Figure 4 and Figure 5 This application further proposes that the limiting member 2 also includes a second limiting rod 22 that moves along the thickness direction of the protective plate 1, and the end of the second limiting rod 22 away from the contact side 11 is tapered.

[0045] The second limiting rod 22 refers to a rod-shaped component that moves laterally along the plane of the protective plate 1. Specifically, it can be implemented using a metal rod with a groove, and its direction of movement is perpendicular to the contact surface of the protective plate 1 with the pile foundation. The tapered setting refers to the formation of a sharp bevel at the end of the rod, which can be achieved through machining or die forging. The tapered end can reduce insertion resistance and facilitate penetration of the ground.

[0046] Specifically, after the protective plate 1 encloses and forms the protective cavity, the second limiting rod 22 can move outward in a direction perpendicular to the pile foundation surface. When the conical end contacts the ground, it can be pushed by an external hammer or hydraulic device to gradually penetrate the soil layer. At this time, the lateral movement of the second limiting rod 22 and the longitudinal movement of the first limiting rod 21 form a spatial cross-limiting mechanism, achieving bidirectional fixation through the friction between the rod and the soil. The guide hole 14 can constrain the movement track of the second limiting rod 22.

[0047] Compared with existing technologies, traditional concrete protective panels 1 rely solely on gravity loads for fixation, making them prone to displacement in soft soil foundations or vibrating environments. This solution, however, utilizes the lateral anchoring of the second limiting rod 22 to effectively resist lateral earth pressure and the impact force of construction machinery. The conical end design overcomes the limitations of traditional planar contact, significantly improving pull-out resistance through wedge-type fixation. Through the above technical solutions, this application solves the problem of insecure fixation of traditional protective devices under complex geological conditions. The lateral anchoring of the second limiting rod 22 and the longitudinal fixation of the first limiting rod 21 form a three-dimensional constraint system, ensuring a reliable connection between the protective panel 1 and the pile foundation.

[0048] This application further proposes that the protective side 12 of the protective plate 1 is provided with a guide hole 14 extending along its thickness direction, and the second limiting rod 22 is slidably disposed in the guide hole 14.

[0049] The guide hole 14 refers to a channel structure opened along the thickness direction of the protective plate 1, which can be implemented as a cylindrical channel or a rectangular groove. Its function is to provide a linear movement path for the second limiting rod 22 and constrain the direction of movement. The second limiting rod 22 refers to a rigid component that cooperates with the guide hole 14. It can be implemented as a smooth metal rod with a tapered end that is easy to insert into the ground or surrounding medium. The limiting function is achieved through sliding adjustment.

[0050] Specifically, the guide hole 14 extends along the protective side 12 of the protective plate 1, penetrating its thickness direction, and the second limiting rod 22 is assembled inside the guide hole 14 and can slide along the hole. When the protective plate 1 is in contact with the pile foundation 200, the second limiting rod 22 can slide outward, and its conical end can be inserted into the surrounding soil or fixing medium, thereby limiting the relative displacement between the protective plate 1 and the pile foundation.

[0051] This application further proposes that the limiting member 2 also includes a transmission structure 23 that drives the first limiting rod 21 and the second limiting rod 22 to move away from the contact side 11 when the first limiting rod 21 moves downward.

[0052] Among them, the transmission structure 23 refers to the mechanical connection device used to transmit motion or force. Specifically, it can be realized by a combination of rigid connecting rod and hinge point, and the conversion of motion direction is realized through hinge connection.

[0053] The downward movement of the first limiting rod 21 refers to the displacement of the limiting rod along the axis of the sliding hole 13. Specifically, it can be triggered by external hammering or its own weight, and its conical lower end can penetrate the soil layer to achieve positioning.

[0054] The movement of the second limiting rod 22 away from the contact side 11 means that the rod moves outward along the guide hole 14. Specifically, the vertical movement of the first limiting rod 21 is converted into the horizontal movement of the second limiting rod 22 by the connecting rod 231, so that the conical end is inserted into the surrounding strata.

[0055] Specifically, when the first limiting rod 21 moves downward under the action of an external force, the connecting rod 231 hinged to the rod body tilts accordingly. The other end of the connecting rod 231 passes through the clearance hole on the upper side wall of the guide hole 14 and hinges to the second limiting rod 22. The change in its tilt angle forces the second limiting rod 22 to translate outward along the guide hole 14. During this linkage process, the vertical displacement of the first limiting rod 21 is converted into the horizontal displacement of the second limiting rod 22, so that the two limiting rods synchronously perform a positioning function.

[0056] Unlike the independently operating first and second limit rods 21 and 22, which require the separate insertion of vertical and horizontal limit components 2, resulting in cumbersome construction procedures and limited positioning accuracy, this solution achieves synchronized bidirectional limiting through a mechanical linkage structure. This simplifies the operation process and ensures coordinated positioning of the vertical and horizontal limit components 2, effectively improving the overall structure's resistance to displacement.

[0057] Through the above technical solution, this application achieves the linkage control of vertical and lateral limiting, simultaneously completing positioning and fixing in both directions during a single hammering action, avoiding installation errors that may occur during step-by-step operations. The bidirectional insertion of the conical end enables the protective plate 1 to form multi-point anchorage with the stratum, significantly enhancing the anti-overturning performance of the protective component under complex geological conditions.

[0058] This application further proposes that the upper sidewall of the guide hole 14 is provided with a second clearance hole 15, and the transmission structure 23 includes a connecting rod 231, one end of the connecting rod 231 is hinged to the first limiting rod 21, and the other end passes through the second clearance hole 15 to be hinged to the second limiting rod 22.

[0059] The connecting rod 231 is a rigid rod that transmits motion or force. It can be made of metal or high-strength composite material. Its two ends are connected to the first limiting rod 21 and the second limiting rod 22 by hinges, so that the two limiting rods form a linkage relationship. The second clearance hole 15 is a through hole provided on the upper side wall of the guide hole 14. It can be made of circular or rectangular hole, providing room for the connecting rod 231 to move and avoiding interference between the connecting rod 231 and the guide hole 14 when it moves.

[0060] Specifically, when the first limiting rod 21 slides downward under the action of an external force, the connecting rod 231 converts the vertical movement of the first limiting rod 21 into the horizontal movement of the second limiting rod 22 through the hinge point. After passing through the second clearance hole 15, the connecting rod 231 is hinged to the second limiting rod 22, so that the second clearance hole 15 allows the connecting rod 231 to swing freely while preventing the connecting rod 231 from rubbing against the protective plate 1 structure during movement. During this process, the conical lower end of the first limiting rod 21 inserts into the ground, while the conical end of the second limiting rod 22 extends laterally and embeds into the surrounding soil layer, forming a two-way fixing effect.

[0061] The transmission structure 23 is not limited to the hinged connection at both ends of the connecting rod 231. In another embodiment, guide slopes can be provided on the first limiting rod 21 and the second limiting rod 22. Through the squeezing action of the two guide slopes, the second limiting rod 22 can also be driven to move laterally when the first limiting rod 21 moves downward.

[0062] This application further proposes that the first limiting rod 21 is provided with a first clearance hole 212, and the connecting rod 231 is connected to the upper side wall of the first clearance hole 212.

[0063] The first clearance hole 212 refers to a hole formed on the first limiting rod 21 to accommodate the movement of the connecting rod 231. It can be implemented as a circular or rectangular through hole, with its size slightly larger than the cross-section of the connecting rod 231 to provide room for movement. The connection between the connecting rod 231 and the upper sidewall of the first clearance hole 212 means that the hinge point of the connecting rod 231 is fixed to the upper edge of the hole. Specifically, it can be fixed by a pin or bolt, allowing the connecting rod 231 to rotate around the hinge point when the first limiting rod 21 moves downward.

[0064] This application further proposes that a limiting hole 16 adapted to the second limiting rod 22 is provided on one side wall of the sliding hole 13 near the fitting side 11.

[0065] The limiting hole 16 refers to the hole located on the side wall of the sliding hole 13. Specifically, it can be processed into a groove or through hole that matches the shape of the second limiting rod 22, and is used to provide fixed support when the second limiting rod 22 moves outward.

[0066] This utility model also proposes a bridge pile foundation structure 1000, which includes a pile foundation body 200 and a pile foundation protection component 100. The specific structure of the pile foundation protection component 100 is as described in the above embodiments. Since this bridge pile foundation structure 1000 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The pile foundation body 200 is disposed in the protection cavity.

[0067] In the technical solution of this utility model, the pile foundation protection component 100 includes multiple protective plates 1 and multiple limiting members 2. The contact sides 11 of the multiple protective plates 1 enclose and form a protective cavity that extends vertically. The limiting member 2 includes a first limiting rod 21 that is slidably disposed in the vertical direction corresponding to the sliding hole 13. The lower end of the first limiting rod 21 is tapered. With this configuration, the pile foundation body 200 is protected by the protective cavity formed by the multiple protective plates 1. Combined with the sliding limiting design of the tapered first limiting rod 21, the protective structure is tightly fitted and reliably fixed to the pile foundation body 200.

[0068] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A pile foundation protection assembly, characterized in that, include: Multiple protective plates, each protective plate having an adhesive side for adhering to the pile body and a protective side opposite to the adhesive side in its thickness direction, the adhesive sides of the multiple protective plates enclosing a vertically penetrating protective cavity, each protective plate having at least one sliding hole extending vertically and penetrating its upper and lower sides; and, Multiple limiting components, each including a first limiting rod that is slidably disposed in the vertical direction corresponding to the sliding hole, the lower end of the first limiting rod being tapered.

2. A pile foundation protection assembly according to claim 1, wherein The upper end of the first limiting rod protrudes from the upper end of the sliding hole and is provided with a blocking part, the outer dimensions of which are larger than the cross-sectional dimensions of the sliding hole.

3. A pile foundation protection assembly according to claim 2, wherein The blocking part is arranged in a flat plate shape.

4. A pile foundation protection assembly according to claim 1, wherein The limiting component also includes a second limiting rod that moves along the thickness direction of the protective plate, and the end of the second limiting rod away from the contact side is tapered.

5. A pile foundation protection assembly as claimed in claim 4, wherein, The protective plate has a guide hole extending along its thickness direction on its protective side, and the second limiting rod is slidably disposed in the guide hole.

6. A pile foundation protection assembly as claimed in claim 5, wherein, The limiting component also includes a transmission structure that drives the first limiting rod and the second limiting rod to move away from the contact side when the first limiting rod moves downward.

7. A pile foundation protection assembly as claimed in claim 6, wherein, A second clearance hole is provided on the upper side wall of the guide hole; The transmission structure includes a connecting rod, one end of which is hinged to the first limiting rod, and the other end passes through the second clearance hole to be hinged to the second limiting rod.

8. A pile foundation protection assembly according to claim 7, wherein The first limiting rod is provided with a first clearance hole, and the connecting rod is connected to the upper side wall of the first clearance hole.

9. A pile foundation protection assembly according to claim 8, wherein, The sliding hole has a limiting hole on one side wall near the fitting side that is adapted to the second limiting rod.

10. A bridge pile foundation structure, characterized by, include: The pile foundation protection component, as described in any one of claims 1 to 9; and, The pile body is located in the protective cavity.

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