Frame type anti-slide pile and pouring device thereof

Abstract

The utility model discloses a frame type slide-resistant pile and a pouring device thereof, the frame type slide-resistant pile comprises rock soil and further comprises a reinforcement cage, the reinforcement cage comprises a main reinforcement assembly of a triangular structure, a pouring foundation pit used for containing the main reinforcement assembly is dug on the rock soil, the section of the pouring foundation pit is triangular, and concrete is poured into the pouring foundation pit to form the slide-resistant pile; comprising a supporting plate arranged above a pouring foundation pit, and the side, close to the pouring foundation pit, of the supporting plate is provided with a moving part used for moving the supporting plate and a discharging assembly used for placing a reinforcement cage into the pouring foundation pit. A box body used for containing concrete and a concrete pouring pump used for conveying the concrete in the box body into the pouring foundation pit are arranged on the side, away from the pouring foundation pit, of the supporting plate. The geometric symmetry of the triangular anti-slide pile enables the stress distribution to be more uniform when the pile body is stressed, the stress concentration problem of the column body is avoided, the concrete cracking risk is reduced, and the durability is improved.

Description

Technical Field

[0001] This utility model relates to the field of anti-slide pile technology, specifically to a frame-type anti-slide pile and its casting device. Background Technology

[0002] Anti-slide piles, as an important geotechnical engineering support structure, are widely used in slope reinforcement, roadbed protection, and landslide control. Their core function is to embed the piles into stable strata, utilizing the pile's bending and shear strength to resist the thrust of sliding soil masses, thereby maintaining the overall stability of the soil.

[0003] Traditional anti-slide piles often employ rectangular or circular cross-section designs. While rectangular cross-section anti-slide piles possess a high section modulus, they suffer from stress concentration, making the concrete prone to cracking at pile corners due to excessive local stress, thus affecting durability. Furthermore, the interaction between rectangular piles and the surrounding soil is primarily planar friction, resulting in uneven distribution of lateral frictional resistance, which limits further improvements in anti-slide performance. Circular cross-section anti-slide piles can alleviate stress concentration issues, but their lower moment of inertia means that, for the same cross-sectional area, their bending resistance is significantly weaker than that of rectangular piles, making them unsuitable for managing high-thrust landslides.

[0004] Furthermore, existing anti-slide pile designs often rely on increasing cross-sectional dimensions or reinforcement ratios to improve bearing capacity, leading to a surge in material consumption and high construction costs. Under complex geological conditions (such as the presence of weak interlayers or fractured rock masses), traditional pile types lack sufficient coordinated deformation capacity with the soil, easily causing pile displacement or localized damage, requiring additional reinforcement measures and further increasing engineering complexity.

[0005] In recent years, some studies have attempted to optimize pile-soil interaction through irregular cross-sections, but there is still a contradiction between its structural mechanical properties and construction convenience. For example, although trapezoidal cross-sections can improve the distribution of lateral friction, their asymmetric characteristics make the pile prone to torsion under dynamic loads, and the alignment of the formwork with the pile is difficult.

[0006] In summary, there is an urgent need for a new type of anti-slide pile structure that combines high bending stiffness and low stress concentration effect, as well as an anti-slide pile casting device that matches the anti-slide pile structure, to solve the above problems. Utility Model Content

[0007] The main purpose of this utility model is to provide a frame-type anti-slide pile and its casting device, which aims to solve the technical problems of low bending stiffness and stress concentration in existing anti-slide piles.

[0008] To achieve the above objectives, the present invention proposes a frame-type anti-slide pile, which includes rock and soil, and a steel cage. The steel cage includes a main reinforcement assembly with a triangular structure. A casting pit with a triangular cross-section is excavated in the rock and soil to accommodate the main reinforcement assembly. Concrete is poured into the casting pit to form the anti-slide pile.

[0009] Preferably, the main reinforcement assembly includes at least three first main reinforcements and at least three second main reinforcements. The two ends of the three first main reinforcements are connected to each other to form an isosceles triangle. One end of each of the three second main reinforcements is connected to the intersection of the isosceles triangle formed by the three first main reinforcements. The ends of the three second main reinforcements away from the first main reinforcements are connected to each other to form the main reinforcement assembly of the triangular structure.

[0010] Preferably, the reinforcing cage is suspended inside the concrete, and the distance between the reinforcing cage and the inner wall of the foundation pit is the same on all sides.

[0011] Preferably, the steel cage further includes a reinforcing bar assembly for reinforcing the main reinforcing bar assembly.

[0012] Preferably, the reinforcing rib assembly includes multiple secondary ribs that are cross-wrapped around the outside of a triangle formed by the cooperation of the first and second main ribs.

[0013] Preferably, it also includes friction components to increase the friction between the anti-slide pile and the soil.

[0014] Preferably, the friction element includes a columnar friction cage formed by multiple steel bars arranged around it. The pit wall of the casting pit is provided with multiple casting holes. The friction cage is placed in the casting holes, and concrete is injected into the casting holes to form the friction element. The concrete of the friction element and the concrete of the anti-slide pile are cast at the same time so that the friction element is connected to the anti-slide pile.

[0015] This utility model also proposes a casting device for a frame-type anti-slide pile, which adopts the frame-type anti-slide pile as described in any one of the above claims. The casting device for the frame-type anti-slide pile includes a support plate placed above the casting pit. The support plate is provided with a moving part for moving the support plate and a material feeding component for putting the reinforcing cage into the casting pit on the side of the support plate near the casting pit. The support plate is provided with a box for receiving concrete and a concrete pouring pump for transporting the concrete in the box to the casting pit on the side away from the casting pit.

[0016] Preferably, the feeding assembly includes a hydraulic cylinder disposed on the side of the support plate near the pouring pit, the output shaft of the hydraulic cylinder is located on the side away from the support plate, the output end of the hydraulic cylinder is connected to the feeding shaft, the axial direction of the feeding shaft is in the same direction as the axial direction of the hydraulic cylinder output shaft, and an electromagnet for attracting the reinforcing steel cage is provided at the end of the feeding shaft away from the hydraulic cylinder output shaft.

[0017] The feeding assembly also includes an isolation bag with one end open for detachably wrapping the electromagnet and the feeding shaft.

[0018] In the technical solution of this utility model:

[0019] The triangular cross-section of the foundation pit can form triangular anti-slide piles after the concrete is poured. Compared with traditional columns, the triangular anti-slide piles have significantly higher bending stiffness, which meets the needs of high-thrust landslide control.

[0020] The triangular anti-slide pile has a multi-directional ridge structure at the contact surface with the soil. The lateral friction resistance is changed from traditional planar friction to multi-directional non-uniform distribution, which can more effectively mobilize the soil resistance and improve the anti-slide performance.

[0021] The geometric symmetry of the triangular anti-slide pile makes the stress distribution more uniform when the pile is under force, avoids the stress concentration problem of the column, reduces the risk of concrete cracking, and improves durability. Attached Figure Description

[0022] 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.

[0023] Figure 1 This is a schematic diagram of the cast-in-place foundation pit and anti-slide pile of this utility model, as well as the structure of the cast-in-place foundation pit and the anti-slide pile being separated.

[0024] Figure 2 This is a schematic diagram of the pouring foundation pit and anti-slide piles of this utility model, and the structure of the anti-slide piles installed in the pouring foundation pit;

[0025] Figure 3 This is a schematic diagram of the steel cage structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the friction cage structure of this utility model;

[0027] Figure 5 This is a schematic diagram of the casting device for the frame-type anti-slide pile of this utility model and the structure of the casting device for grabbing the reinforcing steel cage.

[0028] Explanation of icon numbers:

[0029] 1. Soil and rock; 1a. Foundation pit; 1b. Pouring hole; 2. Reinforcing cage; 21. First main reinforcement; 22. Second main reinforcement; 23. Secondary reinforcement; 3. Friction cage; 4. Support plate; 5. Box body; 6. Material feeding assembly; 61. Hydraulic cylinder; 62. Material feeding shaft; 63. Electromagnet; 7. Concrete; 8. Anti-slide pile.

[0030] 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

[0031] 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.

[0032] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0033] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is 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 as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0036] This utility model proposes a frame-type anti-slide pile and its casting device.

[0037] Please refer to Figures 1 to 5 The frame-type anti-slide pile includes soil and rock 1 and a steel cage 2. The steel cage 2 includes a main reinforcement assembly with a triangular structure. A casting pit 1a with a triangular cross section is excavated on the soil and rock to accommodate the main reinforcement assembly. Concrete 7 is poured into the casting pit 1a to form the anti-slide pile.

[0038] In the technical solution of this utility model:

[0039] The triangular cross-section of the foundation pit 1a can form a triangular anti-slide pile after the concrete 7 is poured. Compared with the traditional column, the triangular anti-slide pile has a significantly higher bending stiffness, which meets the needs of high-thrust landslide control.

[0040] The triangular anti-slide pile has a multi-directional ridge structure at the contact surface with the soil. The lateral friction resistance is changed from traditional planar friction to multi-directional non-uniform distribution, which can more effectively mobilize the soil resistance and improve the anti-slide performance.

[0041] The geometric symmetry of the triangular anti-slide pile makes the stress distribution more uniform when the pile is under force, avoids the stress concentration problem of the column, reduces the risk of concrete cracking, and improves durability.

[0042] Please refer to the appendix. Figure 3 The main reinforcement assembly includes at least three first main reinforcement bars 21 and at least three second main reinforcement bars 22. The two ends of the three first main reinforcement bars 21 are connected to each other to form an isosceles triangle. One end of each of the three second main reinforcement bars 22 is connected to the intersection of the three first main reinforcement bars 21 forming the isosceles triangle. The ends of the three second main reinforcement bars 22 away from the first main reinforcement bars 21 are connected to each other to form the triangular structure of the main reinforcement assembly. The triangular structure of the main reinforcement assembly reduces the torsional risk under dynamic loads and ensures the balanced force on the pile. The first main reinforcement bars 21 and the second main reinforcement bars 22 are connected as a whole by welding.

[0043] Please refer to the appendix. Figure 1-2The reinforcing cage 2 is suspended within the concrete 7, and the distance between the reinforcing cage 2 and the inner wall of the foundation pit 1a is the same on all sides. The equidistant suspension of the reinforcing cage 2 ensures that the protective layer thickness of the concrete 7 is consistent, avoids local corrosion of exposed reinforcing bars, and extends the service life of the pile. The central arrangement of the reinforcing cage 2 maximizes the cooperative deformation capacity of the main reinforcement and the concrete 7 when the pile is under stress, and prevents local crushing caused by eccentric loads.

[0044] Please refer to the appendix. Figure 3 The reinforcing cage 2 also includes reinforcing rib assemblies for strengthening the main reinforcing rib assembly. This maximizes tensile strength; the stirrups are spirally wound to restrain cracking in the concrete 7.

[0045] Please refer to the appendix. Figure 3 The reinforcing rib assembly includes multiple secondary reinforcing bars 23 that are cross-shaped and bound around the outside of a triangular body formed by the interaction of the first main reinforcing bar 21 and the second main reinforcing bar 22. The cross secondary reinforcing bars 23 provide circumferential restraint to the triangular frame formed by the main reinforcing bars, inhibiting the buckling deformation of the main reinforcing bars under concrete shrinkage or load. The grid-like distribution of the secondary reinforcing bars 23 disperses local stress and limits crack propagation, especially in high-stress areas (such as the pile top or slip surface). The spacing and density of the secondary reinforcing bars 23 can be flexibly adjusted to adapt to the different requirements of pile stiffness under different geological conditions without changing the configuration of the main reinforcing bars.

[0046] Please refer to the appendix. Figure 1 It also includes friction components to increase the friction between the anti-slide pile and the soil 1. The friction cage 3 is embedded in the surrounding soil 1 to form a "root bond effect", which greatly increases the mechanical interlocking force of the pile-soil contact surface, and is especially suitable for loose soil layers or fractured rock masses.

[0047] Please refer to the appendix. Figure 1 and 4 The friction element includes a columnar friction cage 3 formed by multiple reinforcing bars. Multiple pouring holes 1b are provided on the wall of the pouring pit 1a. The friction cage 3 is placed inside the pouring holes 1b, and concrete 7 is injected into the pouring holes 1b to form the friction element. The concrete 7 of the friction element and the concrete 7 of the anti-slide pile are poured simultaneously to connect the friction element and the anti-slide pile. The friction element and the main pile are integrally cast to form a spatial anchoring system, allowing the pile and soil to gradually adjust their resistance during deformation, avoiding sudden failure. The pre-set pouring holes 1b enable synchronous construction of the friction element and the main pile, making the friction element and the anti-slide pile a unified whole.

[0048] Please refer to the appendix. Figure 1-5This utility model also proposes a casting device for frame-type anti-slide piles, employing the frame-type anti-slide pile described in any one of the preceding claims. The casting device includes a support plate 4 positioned above the casting pit 1a. The support plate 4 has a moving component for moving the support plate 4 and a material feeding assembly 6 for placing the reinforcing cage 2 into the casting pit 1a on the side near the casting pit 1a. The support plate 4 has a box 5 for receiving concrete 7 and a concrete 7 pouring pump for transporting the concrete 7 from the box 5 into the casting pit 1a on the side away from the casting pit 1a. A hydraulic cylinder 61 and an electromagnet 63 cooperate to vertically lower the reinforcing cage 2, ensuring a suspended and equidistant arrangement, avoiding the risk of displacement caused by manual hoisting. The box 5 and the concrete 7 pouring pump achieve continuous casting, reducing segregation and improving pile density. The moving component and modular design support rapid switching between multiple pile positions, adapting to efficient flow operations in complex terrain and shortening the construction period.

[0049] Please refer to the appendix. Figure 5 The material feeding assembly includes a hydraulic cylinder 61 disposed on the side of the support plate 4 near the pouring pit 1a. The output shaft of the hydraulic cylinder 61 is located on the side away from the support plate 4. The output end of the hydraulic cylinder 61 is connected to the material feeding shaft 62. The axial direction of the material feeding shaft 62 is the same as the axial direction of the output shaft of the hydraulic cylinder 61. An electromagnet 63 for attracting the reinforcing cage 2 is provided at the end of the material feeding shaft 62 away from the output shaft of the hydraulic cylinder 61.

[0050] The feeding assembly also includes an isolation bag with one open end for detachably wrapping the electromagnet 63 and the feeding shaft 62. Through the cooperation of the hydraulic cylinder 61 and the electromagnet 63, the steel cage 2 is attracted and suspended in the pouring pit 1a. While pouring concrete 7 into the pit 1a, the electromagnet 63 continuously attracts the steel cage 2 until the concrete 7 solidifies, ensuring the steel cage 2 is positioned in the center of the concrete 7. The isolation bag can be a plastic bag, which wraps the feeding column and the electromagnet 63, allowing the electromagnet 63 and the feeding shaft 62 to be extracted from the solidified concrete 7.

[0051] The support plate 4 is hinged around one side near the foundation pit 1a and has multiple leveling devices for adjusting the level of the support plate 4. By controlling the leveling devices, the horizontal angle of the support plate 4 can be adjusted, thereby adjusting the cutting and installation angle of the steel cage 2.

[0052] The specific operation method of this utility model is as follows: a pouring pit 1a is dug on the rock and soil 1 where anti-slide piles need to be installed, and a corresponding number of pouring holes 1b are dug on the inner wall of the pouring pit 1a. A friction element is placed in each pouring hole 1b. Then, the support plate 4 is moved to the top of the pouring pit 1a through the moving part. The steel cage 2 is attracted to the electromagnet 63, so that the tip of the steel cage 2 faces the pouring pit 1a. The hydraulic cylinder 61 extends to allow the steel cage 2 to enter the pouring pit 1a. The concrete 7 pouring pump pours concrete 7 into the pouring pit 1a. After the concrete 7 solidifies, the hydraulic cylinder 61 contracts and the electromagnet 63 is de-energized, so that the electromagnet 63 and the feeding shaft 62 are pulled out from the solidified concrete 7. During this process, the isolation bag is stuck to the concrete 7 and left in place and discarded. The anti-slide pile is completed.

[0053] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A frame-type anti-slide pile, comprising soil and rock, characterized in that, It also includes a reinforcing cage, which includes a main reinforcing bar assembly with a triangular structure. A casting pit with a triangular cross-section is excavated in the rock and soil to accommodate the main reinforcing bar assembly. Concrete is poured into the casting pit to form the anti-slide pile.

2. The frame-type anti-slide pile according to claim 1, characterized in that, The main reinforcement assembly includes at least three first main reinforcements and at least three second main reinforcements. The two ends of the three first main reinforcements are connected to each other to form an isosceles triangle. One end of each of the three second main reinforcements is connected to the intersection of the isosceles triangle formed by the three first main reinforcements. The ends of the three second main reinforcements away from the first main reinforcements are connected to each other to form the main reinforcement assembly of the triangular structure.

3. The frame-type anti-slide pile according to claim 1, characterized in that, The steel reinforcement cage is suspended inside the concrete, and the distance between the steel reinforcement cage and the inner wall of the foundation pit is the same on all sides.

4. The frame-type anti-slide pile according to claim 1, characterized in that, The steel cage also includes reinforcing rib assemblies for strengthening the main reinforcing rib assembly.

5. The frame-type anti-slide pile according to claim 4, characterized in that, The reinforcing rib assembly includes multiple secondary ribs that are cross-wrapped around the outside of a triangle formed by the cooperation of the first and second main ribs.

6. The frame-type anti-slide pile according to claim 1, characterized in that, It also includes friction components used to increase the friction between the anti-slide pile and the soil.

7. The frame-type anti-slide pile according to claim 6, characterized in that, The friction element includes a columnar friction cage formed by multiple steel bars arranged around it. The pit wall of the foundation pit is provided with multiple pouring holes. The friction cage is placed in the pouring holes, and concrete is injected into the pouring holes to form the friction element. The concrete of the friction element and the concrete of the anti-slide pile are poured at the same time so that the friction element is connected to the anti-slide pile.

8. A casting device for frame-type anti-slide piles, characterized in that, The frame-type anti-slide pile according to any one of claims 1-7, the casting device of the frame-type anti-slide pile includes a support plate placed above the casting pit, the support plate is provided with a moving part for moving the support plate and a material feeding component for putting the reinforcing cage into the casting pit on the side of the support plate near the casting pit, and a box for receiving concrete and a concrete pouring pump for conveying the concrete in the box to the casting pit on the side of the support plate away from the casting pit.

9. The casting device for frame-type anti-slide piles according to claim 8, characterized in that, The material feeding assembly includes a hydraulic cylinder disposed on the side of the support plate near the pouring pit. The output shaft of the hydraulic cylinder is located on the side away from the support plate. The output end of the hydraulic cylinder is connected to the material feeding shaft. The axial direction of the material feeding shaft is the same as the axial direction of the hydraulic cylinder output shaft. An electromagnet for attracting the reinforcing cage is provided at the end of the material feeding shaft away from the hydraulic cylinder output shaft. The feeding assembly also includes an isolation bag with one end open for detachably wrapping the electromagnet and the feeding shaft.

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