Micro-pile group anchoring structure for slope stability

Abstract

The utility model discloses a kind of micro pile group anchoring structures of side slope stability, including anchoring crossbeam, mounting frame and anchor rod assembly, the mounting frame is installed in the lower of anchoring crossbeam, the lower side of the mounting frame is fixed with elastic constraint component, the lower side of the elastic constraint component is installed with anchor rod assembly, the outer side of the anchor rod assembly is installed with reinforcing component, and the reinforcing component includes reinforcing ring, helical fin and mounting sleeve.The utility model is set by setting anchor rod assembly and reinforcing component, multiple sectional anchor rods can be spliced, modular design is convenient and fast assembly, and single pile assembly length can also be flexibly selected;Reinforcing ring, helical fin, mounting sleeve are set on the outer side of two sectional anchor rods, conveniently improve the connecting rigidity between sectional anchor rods, enhance pile group anchoring force, and helical fin is through the engagement with soil body and promotes side friction, and then improve single pile uplift resistance.

Description

Technical Field

[0001] This utility model relates to the field of micropile group technology, specifically a micropile group anchoring structure for slope stability. Background Technology

[0002] Micropile groups are reinforcement structures composed of a dense group of reinforced concrete columns with a diameter of less than 15cm. They are commonly used in reinforcement projects such as slopes, basements, and bridge supports. When constructing slope protection projects in steep terrain, confined construction sites, or landslide areas, strong support measures, such as pile groups, are generally used to protect the slopes to ensure the safety and stability of the project.

[0003] However, the existing pile group structure is relatively simple, resulting in insufficient anchorage and pull-out resistance of individual piles during the anchoring process, which in turn affects the overall anchorage performance of the pile group. In view of this, this paper studies and improves the existing structure and its shortcomings, and proposes a micro-pile group anchorage structure for slope stability. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a micro-pile group anchoring structure for slope stability.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a micro-pile group anchoring structure for slope stability, comprising an anchoring beam, an installation frame, and an anchor rod assembly. An installation frame is installed below the anchoring beam, and the installation frame has a U-shaped structure. An elastic constraint assembly is fixed to the lower side of the installation frame. An anchor rod assembly is installed below the elastic constraint assembly. A reinforcement assembly is installed on the outer side of the anchor rod assembly. The reinforcement assembly includes a reinforcement ring, a helical blade, and an installation sleeve. Two reinforcement rings are provided, one upper and one lower, with a helical blade between the two reinforcement rings. An installation sleeve is fixed to the outer side of the reinforcement ring, and a connecting hole is provided in the middle of the installation sleeve.

[0006] Furthermore, the anchoring beam has mounting holes at equal intervals, and the U-shaped arm of the mounting frame has positioning holes. Positioning pins pass through the positioning holes and mounting holes in sequence to fix the mounting frame below the anchoring beam.

[0007] Furthermore, the anchor bolt assembly includes a segmented anchor bolt, a threaded connector, and an anchoring spike. The upper side of the segmented anchor bolt has a connecting groove, and the lower side of the segmented anchor bolt is fixed with a threaded connector. An anchoring spike is fixed to the lower side of the threaded connector, and the diameter of the anchoring spike is smaller than the diameter of the threaded connector.

[0008] Furthermore, the elastic constraint component includes an outer sleeve and an elastic rubber layer, the inner side of which is provided with an elastic rubber layer, and the elastic rubber layer has an inner hole in the middle.

[0009] Furthermore, the upper side of the outer sleeve is fixedly connected to the bottom of the mounting frame, and the top of the segmented anchor rod is fixed inside the inner hole.

[0010] Furthermore, the reinforcing ring, spiral blade, and mounting sleeve are all located on the outside of the segmented anchor rod, and the inner groove dimensions of the reinforcing ring, spiral blade, and mounting sleeve match the dimensions of the segmented anchor rod.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. Equipped with anchor bolt assemblies and reinforcement components, it can splice multiple segmented anchor bolts in pairs. The modular design facilitates quick assembly and allows for flexible selection of the single pile assembly length. The reinforcement ring, spiral blade, and installation sleeve are fitted onto the outside of the upper and lower segmented anchor bolts. The reinforcement components are then fixed to the upper and lower segmented anchor bolts by locking bolts passing through the connection holes of the upper and lower installation sleeves. This not only improves the connection stiffness between the segmented anchor bolts, but also enhances the anchoring force of the pile group through the "pressure plate effect" of the reinforcement ring, while the spiral blade increases the side friction resistance by interlocking with the soil. The two work together to improve the pull-out resistance of a single pile.

[0012] 2. An elastic constraint component is provided. The U-shaped mounting frame is installed below the anchor beam. The connection and fixation of the two can be achieved by the positioning pin passing through the mounting hole of the anchor beam and the positioning hole of the mounting frame. This facilitates the disassembly, recycling and reuse of the segmented anchor rods. The simultaneous use of multiple mounting frames and anchor rod components facilitates the conversion of the force of a single pile into the overall force of the pile group, disperses the slope stress, and improves the overall anti-sliding bearing capacity of the pile group. Since slope deformation is mostly a slow cumulative displacement, the elastic rubber layer set between the outer sleeve and the uppermost segmented anchor rod is an elastic structure that allows the pile group to undergo slight coordinated deformation with the slope, avoiding rigid fracture and thus avoiding the problem of fracture due to excessive deformation of traditional rigid connection micro-pile groups. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the elastic constraint component; Figure 3 Exploded view of the anchor bolt assembly and reinforcement assembly; Figure 4 This is a schematic diagram of the splicing of the anchor bolt assembly and the reinforcement assembly.

[0014] In the diagram: 1. Anchor beam; 2. Mounting hole; 3. Mounting frame; 4. Positioning hole; 5. Elastic restraint assembly; 501. Outer sleeve; 502. Elastic rubber layer; 503. Inner hole; 6. Anchor bolt assembly; 601. Segmented anchor bolt; 602. Connecting groove; 603. Threaded connector; 604. Anchor spike; 7. Reinforcing assembly; 701. Reinforcing ring; 702. Spiral blade; 703. Mounting sleeve; 704. Connecting hole. Detailed Implementation

[0015] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. The following examples are used to illustrate this utility model, but should not be used to limit the scope of this utility model.

[0016] like Figure 1 and Figure 4 As shown, a micro-pile group anchoring structure for slope stabilization in this embodiment includes an anchoring beam 1, an installation frame 3, and an anchor rod assembly 6. The installation frame 3 is installed below the anchoring beam 1 and has a U-shaped structure. The anchoring beam 1 has installation holes 2 at equal intervals. The U-shaped arm of the installation frame 3 has positioning holes 4. Positioning pins pass through the positioning holes 4 and the installation holes 2 in sequence to fix the installation frame 3 below the anchoring beam 1.

[0017] An elastic constraint component 5 is fixed to the lower side of the mounting frame 3, such as... Figure 2 As shown, the elastic constraint component 5 includes an outer sleeve 501 and an elastic rubber layer 502. The inner side of the outer sleeve 501 is provided with the elastic rubber layer 502, and the middle of the elastic rubber layer 502 is provided with an inner hole 503. The outer sleeve 501 is fixedly connected to the bottom of the mounting frame 3, and the lower side of the elastic constraint component 5 is equipped with an anchor rod component 6.

[0018] Specifically, the U-shaped mounting frame 3 is installed below the anchor beam 1. The connection and fixation of the two can be achieved by the positioning pin passing through the mounting hole 2 of the anchor beam 1 and the positioning hole 4 of the mounting frame 3. The above design facilitates the disassembly, recycling, and reuse of the anchor rod assembly 6 installed at the lower part of the mounting frame 3. As needed, a suitable number of anchor rod assemblies 6 can be installed on the anchor beam 1 through multiple mounting frames 3. Multiple mounting frames 3 and anchor rod assemblies 6 can be used simultaneously, which facilitates the conversion of the single pile force into the overall force of the pile group, disperses the slope stress, and improves the overall anti-sliding bearing capacity of the pile group. Since the slope deformation is mostly a slow cumulative displacement, the elastic rubber layer 502 set between the outer sleeve 501 and the uppermost segmented anchor rod 601 is an elastic structure, which allows the pile group to undergo slight coordinated deformation with the slope, avoiding rigid fracture, thereby avoiding the problem of fracture due to excessive deformation of traditional rigid connection micro-pile groups.

[0019] like Figure 1 , Figure 3 and Figure 4As shown, the anchor bolt assembly 6 includes a segmented anchor bolt 601, a threaded connector 603, and an anchoring spike 604. The anchor bolt assembly 6 is installed on the lower side of the elastic constraint assembly 5. Specifically, the top of the segmented anchor bolt 601 is fixed in the inner hole 503 of the elastic constraint assembly 5. A connecting groove 602 is provided on the upper side of the segmented anchor bolt 601. A threaded connector 603 is fixed on the lower side of the threaded connector 603. An anchoring spike 604 is fixed on the lower side of the threaded connector 603. The diameter of the anchoring spike 604 is smaller than the diameter of the threaded connector 603. The threaded connector 603 is threaded into the connecting groove 602 of the next segmented anchor bolt 601.

[0020] With the above design, multiple segmented anchor rods 601 can be spliced ​​together in pairs. During splicing, the threaded connector 603 and anchoring spike 604 of the previous segmented anchor rod 601 are threadedly screwed into the connecting groove 602 of the next segmented anchor rod 601. The modular design facilitates the rapid assembly of the segmented anchor rods 601. At the same time, single piles or multiple piles can be flexibly selected to achieve different assembly lengths. The anchoring spike 604 at the bottom of the lowest segmented anchor rod 601 is embedded in the ground.

[0021] like Figure 1 , Figure 3 and Figure 4 As shown, a reinforcing component 7 is installed on the outer side of the anchor bolt assembly 6 to increase the strength of the segmented anchor bolt 601. When multiple segmented anchor bolts 601 are selected for assembly, the reinforcing component 7 is fixed between every two segmented anchor bolts 601. The reinforcing component 7 includes a reinforcing ring 701, a spiral blade 702, and a mounting sleeve 703. The reinforcing ring 701 is provided with two rings, one upper and one lower, and the spiral blade 702 is provided between the two reinforcing rings 701. The mounting sleeve 703 is fixed on the outer side of the reinforcing ring 701, and a connecting hole 704 is provided in the middle of the mounting sleeve 703. The reinforcing ring 701, the spiral blade 702, and the mounting sleeve 703 are all located on the outer side of the segmented anchor bolt 601, and the inner groove dimensions of the reinforcing ring 701, the spiral blade 702, and the mounting sleeve 703 match the dimensions of the segmented anchor bolt 601.

[0022] Specifically, the reinforcing ring 701, the spiral blade 702, and the mounting sleeve 703 are fitted onto the outside of the upper and lower segmented anchor rods 601. The locking bolts pass through the connecting holes 704 of the upper and lower mounting sleeves 703, which facilitates the fixing of the reinforcing component 7 between the upper and lower segmented anchor rods 601. On the one hand, this can improve the connection stiffness between the segmented anchor rods 601. On the other hand, the reinforcing ring 701 enhances the pile anchoring force through the "pressure plate effect". The spiral blade 702 increases the side friction resistance by interlocking with the soil. The two work together to improve the pull-out resistance of a single pile.

[0023] In summary, firstly, multiple segmented anchor rods 601 are spliced ​​together in pairs. During splicing, the threaded connector 603 and anchoring spike 604 of the previous segmented anchor rod 601 are screwed into the connecting groove 602 of the next segmented anchor rod 601, thus allowing for flexible selection of the single pile assembly length. Then, the reinforcing ring 701, spiral blade 702, and mounting sleeve 703 are fitted onto the outside of the upper and lower segmented anchor rods 601. Finally, the locking bolts are passed through the connecting holes 704 of the upper and lower mounting sleeves 703 to achieve the connection and fixation between the reinforcing component 7 and the upper and lower segmented anchor rods 601. On the one hand, this improves the connection stiffness between the segmented anchor rods 601; on the other hand, the reinforcing ring 701 enhances the anchoring force of the pile group through the "pressure plate effect," and the spiral blade 702 increases the side friction resistance through its interlocking with the soil. The synergy of these two factors helps to improve the pull-out resistance of a single pile. Then, the U-shaped mounting frame 3 is installed below the anchor beam 1. The connection and fixation of the two can be achieved by passing the positioning pin through the mounting hole 2 of the anchor beam 1 and the positioning hole 4 of the mounting frame 3. The simultaneous use of multiple mounting frames 3 and anchor rod components 6 facilitates the conversion of the force of a single pile into the overall force of the pile group, disperses the slope stress, and improves the overall anti-sliding bearing capacity of the pile group. Since the slope deformation is mostly a slow cumulative displacement, during the anchoring process, the anchoring spike 604 at the bottom of the lowest segmented anchor rod 601 is deeply embedded in the ground. At this time, the elastic rubber layer 502 set between the outer sleeve 501 and the uppermost segmented anchor rod 601 is an elastic structure, which can allow the pile group to undergo slight coordinated deformation with the slope, avoid rigid fracture, and thus avoid the problem of fracture due to excessive deformation of traditional rigid connection micro-pile groups. This completes the use process of the micro-pile group anchoring structure for slope stability.

[0024] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A micro-pile group anchoring structure for slope stabilization, comprising an anchoring beam (1), an installation frame (3), and an anchor bolt assembly (6), characterized in that, An installation frame (3) is installed below the anchor beam (1), and the installation frame (3) is a U-shaped structure. An elastic constraint component (5) is fixed on the lower side of the installation frame (3). An anchor bolt component (6) is installed on the lower side of the elastic constraint component (5). A reinforcement component (7) is installed on the outer side of the anchor bolt component (6). The reinforcement component (7) includes a reinforcement ring (701), a spiral blade (702), and an installation sleeve (703). The reinforcement ring (701) is provided with two rings, one above the other, and a spiral blade (702) is provided between the two reinforcement rings (701). An installation sleeve (703) is fixed on the outer side of the reinforcement ring (701), and a connection hole (704) is provided in the middle of the installation sleeve (703).

2. The micro-pile group anchoring structure for slope stabilization according to claim 1, characterized in that, The anchor beam (1) has mounting holes (2) at equal intervals, and the mounting frame (3) has positioning holes (4) on its U-shaped arm. The positioning pins pass through the positioning holes (4) and mounting holes (2) in sequence to fix the mounting frame (3) below the anchor beam (1).

3. The micro-pile group anchoring structure for slope stabilization according to claim 2, characterized in that, The anchor bolt assembly (6) includes a segmented anchor bolt (601), a threaded connector (603), and an anchor spike (604). The segmented anchor bolt (601) has a connecting groove (602) on its upper side, and the threaded connector (603) is fixed on the lower side of the segmented anchor bolt (601). The anchor spike (604) is fixed on the lower side of the threaded connector (603). The diameter of the anchor spike (604) is smaller than the diameter of the threaded connector (603).

4. The micropile group anchorage structure for slope stabilization according to claim 3, characterized in that, The elastic constraint component (5) includes an outer sleeve (501) and an elastic rubber layer (502). The inner side of the outer sleeve (501) is provided with an elastic rubber layer (502), and an inner hole (503) is opened in the middle of the elastic rubber layer (502).

5. The micropile group anchoring structure for slope stabilization according to claim 4, characterized in that, The upper side of the outer sleeve (501) is fixedly connected to the bottom of the mounting frame (3), and the top of the segmented anchor rod (601) is fixed inside the inner hole (503).

6. The micropile group anchoring structure for slope stabilization according to claim 5, characterized in that, The reinforcing ring (701), the spiral blade (702), and the mounting sleeve (703) are all located on the outside of the segmented anchor rod (601), and the inner groove dimensions of the reinforcing ring (701), the spiral blade (702), and the mounting sleeve (703) match the dimensions of the segmented anchor rod (601).

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