Anti-sliding structure for landslide treatment

Abstract

The utility model belongs to the technical field of slope protection, and particularly discloses a landslide treatment anti-sliding structure which comprises a micro pile group vertically inserted into a slope body sliding bed and top beams located on one side of a slope body landslide surface, the top beams are arranged on the top of the micro pile group, a retaining wall is arranged between every two adjacent top beams, and drainage holes are formed in the retaining walls. The micro pile group comprises a plurality of supporting anchor rods, each supporting anchor rod is inserted into the corresponding anchor rod hole, the top of each supporting anchor rod extends out of the corresponding anchor rod hole, and the bottom of each anchor rod hole extends into the slope sliding bed. The miniature pile groups are vertically inserted into the sliding bed, the top beams are connected with the pile tops, the retaining wall is arranged between the adjacent top beams, the dispersed miniature pile groups are connected into a whole, the anti-sliding force is converted from single-point supporting to group collaborative stress, the miniature pile groups are densely arranged to form a flexible supporting system, the earthwork excavation volume is reduced compared with a traditional anti-sliding pile, and the construction cost is reduced. And construction disturbance is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of slope protection technology, and specifically relates to an anti-sliding structure for landslide control. Background Technology

[0002] In the field of landslide control engineering, landslide disasters pose a serious threat to engineering facilities, the natural environment, and the safety of life and property. Anti-slide piles, as a core control structure that has been widely used for a long time, play a crucial role in preventing landslides from sliding due to their rigidity and anti-slide capabilities. Traditional anti-slide piles typically adopt a large-section reinforced concrete structure, relying on the depth to which the pile body is embedded in the stable sliding bed to provide anti-slide support.

[0003] For example, Chinese patent CN215518789U discloses a composite section reinforced concrete anti-slide pile. The composite section anti-slide pile is formed by integrally casting a steel cage and concrete. After the composite section pile hole is excavated, the steel cage is hoisted into the composite section pile hole as a whole, and then the concrete is poured. Compared with square or round anti-slide piles, it has better bending stiffness, which can reduce the number of anti-slide piles and achieve better support effect. However, in this scheme, the rectangular section pile hole requires the use of large mechanical equipment for deep foundation pit excavation during construction, which strongly disturbs the original geological structure of the slope and is very likely to cause secondary problems such as soil loosening and reduced stability of the surrounding rock and soil. Utility Model Content

[0004] The purpose of this invention is to overcome the defects in the existing technology and provide a landslide control and anti-sliding structure.

[0005] This utility model provides a landslide control and anti-slide structure, including a group of micropiles vertically inserted into the slope bed and a capping beam located on one side of the landslide surface. The capping beam is set on the top of the micropiles, and a retaining wall is set between two adjacent capping beams. Drainage holes are opened in the retaining wall.

[0006] The micropiles include several support anchors, each of which is inserted into an anchor hole and its top extends to the outside of the anchor hole, while the bottom of the anchor hole extends into the slope sliding bed.

[0007] A further proposed solution is that the support anchors of each group of micropiles are arranged in a staggered, quincunx pattern, and the bottom of the capping beam is provided with insertion holes that are compatible with the support anchors. After the capping beam and the support anchors are inserted, they are connected by grouting.

[0008] A further option is that the cross-section of the support anchor is a stepped cross-section that is thinner at the top and thicker at the bottom.

[0009] A further proposed solution involves installing reinforcing bars on the support anchors and forming a support pier by pouring concrete, with the bottom of the support pier located on the landslide surface.

[0010] A further option is to install a transverse connecting rod between two adjacent groups of micropiles, with both ends of the transverse connecting rod being tied to the support anchor rod.

[0011] The position of the transverse connecting rod is adapted to the support pier, so that the transverse connecting rod and the support pier are cast together as an integral structure.

[0012] A further proposed solution is that the retaining wall is a precast concrete block, which is connected to the capping beam by high-strength bolts and grouting.

[0013] A further option is to provide recessed tenons on both sides of the cap beam and protruding tenons at both ends of the retaining wall, which are adapted to the recessed tenons and are engaged with the recessed tenons.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention vertically inserts a group of micropiles into a sliding bed, connects the top of the piles with a capping beam, and sets up retaining walls between adjacent capping beams to connect the dispersed micropiles into a whole. The anti-sliding force changes from single-point support to group collaborative force. The micropiles form a flexible support system through dense arrangement, which reduces the amount of earthwork excavation, reduces construction disturbance, and increases construction speed compared to traditional anti-sliding piles, while also reducing the risk factor of landslide construction during the sliding stage.

[0016] This utility model's micropiles utilize a staggered, quincunx arrangement of small-diameter support anchors, combined with a stepped cross-section design, eliminating the need for large-scale excavation during construction. The integrated casting of the support piers and transverse connecting rods further shortens the construction cycle and reduces material consumption, making it suitable for narrow sites and ecologically sensitive areas.

[0017] The capping beam is rigidly connected to the retaining wall via a tenon-and-groove joint, enhancing the shear strength of the cross-section. The precast retaining wall is connected to the capping beam via high-strength bolts and grouting, allowing for rapid assembly and reducing on-site work time. The modular design allows for flexible structural adjustments to adapt to different slope morphologies. The grouting design at the top of the micropiles and the capping beam, combined with the anchoring depth extending to the slide bed, transforms the anti-sliding force from single-point support to collective synergistic force distribution, improving overall anti-sliding stiffness. Attached Figure Description

[0018] The following figures are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0019] Figure 1 : A schematic diagram of the structure of this utility model;

[0020] Figure 2 Schematic diagram of a micro-pile group structure;

[0021] Figure 3 : Schematic diagram of the connection between adjacent micropiles;

[0022] In the diagram: 1. Slope sliding bed; 2. Slope landslide surface; 3. Support anchor; 4. Landslide surface; 5. Crown beam; 6. Retaining wall; 7. Support pier; 8. Anchor hole; 9. Binding steel bar; 10. Transverse steel bar; 11. Tongue; 12. Tenon; 13. Drainage hole. Detailed Implementation

[0023] To make the objectives, technical solutions, design methods, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this utility model.

[0024] This invention provides a landslide control and anti-sliding structure, comprising a group of micropiles vertically inserted into the slope's sliding bed 1 and a capping beam 5 located on one side of the landslide surface 2. The capping beam 5 is positioned at the top of the micropiles, and a retaining wall 6 is provided between adjacent capping beams 5, connecting the dispersed micropiles into a whole. The anti-sliding force is transformed from single-point support to collective synergistic force. Drainage holes 13 are provided on the retaining wall 6 to effectively drain groundwater and reduce the softening effect of pore water pressure on the sliding zone. The micropiles include several support anchors 3, each of which is inserted into an anchor hole 8 with its top extending to the outside of the anchor hole 8 and its bottom extending into the slope's sliding bed 1. The support anchors 3 of each group of micropiles are arranged in a staggered, quincunx pattern, forming a spatial grid constraint, enhancing the shear strength of the soil, and reducing the risk of soil slippage between piles. A fitting hole adapted to the support anchor 3 is provided at the bottom of the capping beam 5. After the capping beam 5 and the support anchor 3 are inserted, they are connected by grouting. The grouting connection between the capping beam 5 and the support anchor 3 improves the interfacial bonding strength. In this embodiment, the support anchor 3 has a stepped cross-section that is thinner at the top and thicker at the bottom. The enlarged cross-section of the lower section of the support anchor 3 increases the pile end bearing capacity while reducing settlement; furthermore, the stepped cross-section enhances the interlocking between the grout and the soil, further improving the support strength.

[0025] like Figure 2 As shown, reinforcing bars 9 are installed on the support anchor 3, and a support pier 7 is formed by concrete pouring. The bottom of the support pier 7 is located on the landslide surface 4. The support pier 7 disperses the landslide thrust to a larger area of ​​soil, reduces local stress, and increases the compressive strength of the support pier 7 by forming a composite structure with the reinforcing bars 9 and concrete, thus ensuring long-term stability.

[0026] like Figure 3 As shown, a transverse connecting rod 10 is also provided between two adjacent groups of micropiles. The two ends of the transverse connecting rod 10 are tied to the support anchor rod 3. The position of the transverse connecting rod 10 is adapted to the support pier 7 so that the transverse connecting rod 10 and the support pier 7 are cast together as an integral structure. The transverse connecting rod 10 and the support pier 7 form a spatial truss, which improves the horizontal shear stiffness. The integrated casting reduces construction joints, improves the overall structure, and enhances the seismic performance. The retaining wall 6 is a precast concrete block, which is connected to the capping beam 5 by high-strength bolts and grouting, which greatly shortens the construction period of the retaining wall 6. Tenons 11 are provided on both sides of the capping beam 5, and tenons 12 adapted to the tenons 11 are provided at both ends of the retaining wall 6. The tenons 12 are engaged with the tenons 11. Specifically, the dovetail tenon of the tenon 11 structure ensures the stability of the connection between the retaining wall 6 and the capping beam 5. The high-strength bolts are M24 bolts, which, combined with grouting, effectively improve the pull-out resistance of the connection node and adapt to dynamic loads.

[0027] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A landslide remediation anti-slide structure, characterized by, The micro pile group is vertically inserted into the inside of the slope sliding bed (1), and the crown beam (5) is arranged on one side of the slope sliding surface (2) and on the top of the micro pile group, and the retaining wall (6) is arranged between two adjacent crown beams (5), and the water discharge hole (13) is arranged on the retaining wall (6). The micro pile group comprises a plurality of supporting anchor rods (3), each of which is inserted into the anchor rod hole (8) and the top of the supporting anchor rod (3) extends to the outside of the anchor rod hole (8), and the bottom of the anchor rod hole (8) extends to the inside of the slope sliding bed (1).

2. The landslide treatment anti-slide structure according to claim 1, wherein The supporting anchor rods (3) of each group of micro pile groups are arranged in a staggered manner in the shape of a plum blossom, the bottom of the crown beam (5) is provided with a plug-in hole matched with the supporting anchor rod (3), and the crown beam (5) is connected by grouting after being plugged with the supporting anchor rod (3).

3. The landslide treatment anti-slide structure according to claim 2, wherein The cross section of the supporting anchor rod (3) is a stepped cross section with a narrow top and a wide bottom.

4. The landslide treatment anti-slide structure according to claim 2, wherein The supporting anchor rod (3) is provided with a binding steel bar (9), and a support pier (7) is formed by pouring concrete, and the bottom of the support pier (7) is located on the landslide surface (4).

5. The landslide treatment anti-slide structure according to claim 4, wherein A transverse connecting rod (10) is further arranged between two adjacent groups of micro pile groups, and the two ends of the transverse connecting rod (10) are connected with the supporting anchor rod (3). The position of the transverse connecting rod (10) is matched with the support pier (7), so that the transverse connecting rod (10) and the support pier (7) are integrally formed by co-pouring.

6. The landslide treatment anti-slide structure according to claim 5, wherein, The retaining wall (6) is a prefabricated concrete block connected with the crown beam (5) by high-strength bolts and grouting.

7. The landslide treatment anti-slide structure according to claim 6, wherein The recessed tenon (11) is arranged on both sides of the crown beam (5), and the protruding tenon (12) matched with the recessed tenon (11) is arranged at the two ends of the retaining wall (6), and the protruding tenon (12) is clamped with the recessed tenon (11).

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