Segmented anchored slope protection device

Abstract

The present invention proposes a segmented anchoring type slope protection device, comprising a lattice protection structure, a plurality of prestressed anchor rods, a plurality of anchor pads, a plurality of connectors and a plurality of steel strands; after adopting the scheme of the present invention, different prestress conditions can be used to tension the prestressed anchor rods and the steel strands respectively, so that the prestressed anchor rods and the tension rod structure can provide different prestresses; the beneficial technical effect of the present invention is: a segmented anchoring type slope protection device is proposed, and the scheme can avoid the large prestress of the prestressed anchor rods directly acting on the lattice protection structure, thereby protecting the lattice protection structure and improving the service life of the slope protection device.

Description

Technical Field

[0001] The invention relates to a slope protection technology, in particular to a segmented anchoring type slope protection device. Background Art

[0002] For medium and small loose medium slopes with poor overall stability and front slopes that need to be protected, the existing technology generally adopts a combination of lattice protection structure and prestressed anchor rods for protection and treatment; in specific implementation, the outer end of the prestressed anchor rod is generally directly anchored on the lattice protection structure;

[0003] The existing problem is: when protecting and treating the slope, the prestressed anchor rods have two main functions. The first is to change the stress state of the slope soil through the prestressed anchor rods, and the second is to anchor the lattice protection structure to the slope surface through the prestressed anchor rods; for the lattice protection structure, the prestress required to anchor the lattice protection structure is much smaller than the prestress required to change the stress state of the slope soil, but in order to meet the demand for changing the stress state of the slope soil, only a larger prestress can be applied to the prestressed anchor rods; due to the low tensile strength of reinforced concrete, the lattice protection structure made of reinforced concrete is subjected to the large prestress of the prestressed anchor rods for a long time, which will cause cracks in the lattice protection structure; after the cracks appear, the internal steel bars of the lattice protection structure will be exposed, which will cause the steel bars to rust and eventually lead to a decrease in structural strength. In addition, the deformation of the lattice protection structure caused by the cracks will also cause the prestress loss of the prestressed anchor rods, weakening the protective effect of the protective device. Summary of the invention

[0004] In view of the problems in the background technology, the present invention proposes a segmented anchored slope protection device, the innovation of which is that the segmented anchored slope protection device comprises a lattice protection structure, a plurality of prestressed anchor rods, a plurality of anchor pads, a plurality of connectors and a plurality of steel strands;

[0005] The lattice protection structure is arranged on the slope surface, the lattice protection structure is a reinforced concrete structure, and a plurality of anchoring points are arranged on the lattice protection structure; a plurality of anchoring surfaces are arranged in the soil inside the lattice protection structure, a gap is left between the anchoring surface and the lattice protection structure, and the positions of the plurality of anchoring surfaces correspond to the plurality of anchoring points one by one;

[0006] The anchor plate is buried in the soil outside the anchoring surface, the inner side of the anchor plate contacts the anchoring surface, and the plurality of anchor plates correspond to the plurality of anchoring surfaces one by one; a connection structure matching the connection piece is provided on the outer side of the anchor plate;

[0007] The prestressed anchor rod is anchored in the soil inside the anchoring surface, and the outer end of the prestressed anchor rod is connected to the anchor pad and locked on the anchoring surface through the anchor pad; multiple prestressed anchor rods correspond to multiple anchor pads one by one;

[0008] The connecting member is connected to the connecting structure, and the multiple connecting members correspond to the multiple anchor pads one by one;

[0009] A grouting pipe is arranged between the connecting piece and the anchor point; the steel strand is arranged in the grouting pipe, the inner end of the steel strand is connected to the connecting piece, and the outer end of the steel strand is anchored on the outer surface of the anchor point; concrete is poured into the grouting pipe.

[0010] The principle of the present invention is: the reason why the prior art has the problems in the background technology is that a large prestress is required to anchor the outer end of the prestressed anchor rod on the lattice protective structure; after adopting the scheme of the present invention, the outer end of the prestressed anchor rod is no longer anchored on the lattice protective structure, but is anchored on the anchoring surface, and the anchoring of the lattice protective structure is achieved by a "pull rod structure" composed of steel strands, grouting pipes and concrete in the grouting pipes. After adopting this structural scheme, when making a slope protection device, different prestress conditions can be used to tension the prestressed anchor rod and the steel strand respectively, so that the prestressed anchor rod and the pull rod structure can provide different prestresses, which not only meets the large prestress condition required to change the stress state of the slope soil, but also meets the low prestress condition required for the anchoring of the lattice protective structure. In this way, the stress condition of the lattice protective structure can be effectively improved, cracks in the lattice protective structure can be prevented, and it is ensured that the slope protection device can play a protective role for a long time and stably.

[0011] Preferably, the connection structure is a connection tube with external threads, the connection tube and the anchor plate are an integral structure; the connection piece is threadedly connected to the connection tube. Since the anchoring surface is located in the soil, an operation hole needs to be set during production. Since the operation hole space is limited, in order to facilitate the connection of the anchor plate and the connection piece, the anchor plate and the connection piece are designed as a threaded connection structure.

[0012] Preferably, the connector is composed of a suction cup and a connecting shell; a threaded hole matching the connecting tube is provided on the inner end face of the connecting shell, and the outer end face of the connecting shell matches the inner end face of the suction cup; the suction cup and the connecting shell are both made of metal permanent magnetic material, and the inner end face of the suction cup and the outer end face of the connecting shell attract and contact each other. In actual environment, the anchor plate and the anchoring surface may be displaced due to soil movement, thereby pulling the pull rod structure. If the pulling force is large, it may cause the pull rod structure to be damaged or cause a large pulling force to the lattice protection structure. To prevent this from happening, the connector is designed as a suction cup and a connecting shell. The attraction between the suction cup and the connecting shell can be adjusted by changing the structural dimensions; under normal circumstances, the suction cup and the connecting shell are tightly attached together under the action of magnetic attraction; when the pulling force of the inner structure on the connecting shell is greater than the magnetic attraction, the suction cup and the connecting shell will separate, thereby protecting the pull rod structure and the lattice protection structure.

[0013] Preferably, a rubber sleeve is provided outside the connector, the rubber sleeve wraps the suction cup and the connection shell inside, and the inner end of the rubber sleeve contacts the outer side of the anchor plate. The rubber sleeve is used to prevent the metal permanent magnet material from rusting.

[0014] Preferably, the plurality of anchoring points are distributed in an array.

[0015] Preferably, the prestressed anchor rods and steel strands that match each other are coaxially arranged.

[0016] The beneficial technical effect of the present invention is: a segmented anchoring type slope protection device is proposed, which can avoid the large prestress of the prestressed anchor rod directly acting on the lattice protection structure, play a protective role on the lattice protection structure, and improve the life of the slope protection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 , schematic diagram of the principle of the present invention;

[0018] Figure 2 , schematic diagram of the cross-sectional structure of the connection between the anchor plate and the connector;

[0019] Figure 3 , schematic diagram of lattice protection structure;

[0020] The names corresponding to the various marks in the figure are: lattice protection structure 1, prestressed anchor rod 2, anchor plate 3, connector 4, suction cup 4-1, connecting shell 4-2, steel strand 5, rubber sleeve 6, anchor surface 7, grouting pipe 8, anchor pile 9, anchor point 10. DETAILED DESCRIPTION

[0021] A segmented anchored slope protection device, the structure of which is as follows: the segmented anchored slope protection device comprises a lattice protection structure 1, a plurality of prestressed anchor rods 2, a plurality of anchor pads 3, a plurality of connectors 4 and a plurality of steel strands 5;

[0022] The lattice protection structure 1 is arranged on the slope surface, the lattice protection structure 1 is a reinforced concrete structure, and a plurality of anchoring points are arranged on the lattice protection structure 1; a plurality of anchoring surfaces are arranged in the soil inside the lattice protection structure 1, and a gap is left between the anchoring surface and the lattice protection structure 1, and the positions of the plurality of anchoring surfaces correspond to the plurality of anchoring points one by one;

[0023] The anchor plate 3 is buried in the soil outside the anchoring surface, the inner side of the anchor plate 3 is in contact with the anchoring surface, and multiple anchor plates 3 correspond to multiple anchoring surfaces one by one; a connection structure matching the connector 4 is provided on the outer side of the anchor plate 3;

[0024] The prestressed anchor rod 2 is anchored in the soil inside the anchoring surface, and the outer end of the prestressed anchor rod 2 is connected to the anchor pad 3 and locked on the anchoring surface through the anchor pad 3; multiple prestressed anchor rods 2 correspond to multiple anchor pads 3 one by one;

[0025] The connecting member 4 is connected to the connecting structure, and the multiple connecting members 4 correspond to the multiple anchor pads 3 one by one;

[0026] A grouting pipe is provided between the connector 4 and the anchor point; the steel strand 5 is arranged in the grouting pipe, the inner end of the steel strand 5 is connected to the connector 4, and the outer end of the steel strand 5 is anchored on the outer surface of the anchor point; concrete is poured into the grouting pipe.

[0027] Furthermore, the connection structure is a connection tube with external threads, and the connection tube and the anchor plate 3 are an integral structure; the connection piece 4 is threadedly connected to the connection tube.

[0028] Furthermore, the connecting member 4 is composed of a suction cup 4-1 and a connecting shell 4-2; a threaded hole matching the connecting tube is provided on the inner end face of the connecting shell 4-2, and the outer end face of the connecting shell 4-2 matches the inner end face of the suction cup 4-1; the suction cup 4-1 and the connecting shell 4-2 are both made of metal permanent magnetic material, and the inner end face of the suction cup 4-1 and the outer end face of the connecting shell 4-2 attract and contact each other.

[0029] Furthermore, a rubber sleeve is provided outside the connecting member 4 , and the rubber sleeve wraps the suction cup 4 - 1 and the connecting shell 4 - 2 , and the inner end of the rubber sleeve contacts the outer side surface of the anchor plate 3 .

[0030] Furthermore, the plurality of anchoring points are distributed in an array.

[0031] Furthermore, the prestressed anchor rod 2 and the steel strand 5 that match each other are coaxially arranged.

[0032] In specific implementation, the lattice protection structure 1 can adopt a common square lattice or diamond lattice. Figure 3 In that way, anchor piles 9 are arranged in the middle of the grid of the lattice protection structure 1 , and corresponding prestressed anchor rods 2 are arranged in the soil inside the anchor piles 9 , and the outer ends of the prestressed anchor rods 2 corresponding to the anchor piles 9 are anchored by the anchor piles 9 .

Claims

1. A segmented anchoring slope protection device, characterized in that: The segmented anchoring type slope protection device comprises a lattice protection structure (1), a plurality of prestressed anchor rods (2), a plurality of anchor pads (3), a plurality of connecting pieces (4) and a plurality of steel strands (5); The lattice protection structure (1) is arranged on the surface of the slope, the lattice protection structure (1) is a reinforced concrete structure, and a plurality of anchoring points are arranged on the lattice protection structure (1); a plurality of anchoring surfaces are arranged in the soil inside the lattice protection structure (1), a gap is left between the anchoring surface and the lattice protection structure (1), and the positions of the plurality of anchoring surfaces correspond to the plurality of anchoring points one by one; The anchor plate (3) is buried in the soil outside the anchoring surface, the inner side surface of the anchor plate (3) is in contact with the anchoring surface, and the plurality of anchor plates (3) correspond to the plurality of anchoring surfaces one by one; a connection structure matching the connection piece (4) is provided on the outer side surface of the anchor plate (3); The prestressed anchor rod (2) is anchored in the soil inside the anchoring surface, and the outer end of the prestressed anchor rod (2) is connected to the anchor pad (3) and locked on the anchoring surface through the anchor pad (3); a plurality of prestressed anchor rods (2) correspond to a plurality of anchor pads (3) in a one-to-one manner; The connecting member (4) is connected to the connecting structure, and the plurality of connecting members (4) correspond one to one to the plurality of anchor pads (3); A grouting pipe is provided between the connecting piece (4) and the anchor point; the steel strand (5) is arranged in the grouting pipe, the inner end of the steel strand (5) is connected to the connecting piece (4), and the outer end of the steel strand (5) is anchored on the outer surface of the anchor point; concrete is poured into the grouting pipe; The lattice protection structure (1) adopts a square lattice or a diamond lattice; an anchor pile (9) is arranged in the middle of the grid of the lattice protection structure (1); a corresponding prestressed anchor rod (2) is arranged in the soil inside the anchor pile (9); and the outer end of the prestressed anchor rod (2) corresponding to the anchor pile (9) is anchored by the anchor pile (9).

2. The segmented anchoring slope protection device according to claim 1 is characterized in that: The connection structure is a connection tube with external threads, and the connection tube and the anchor plate (3) are an integral structure; the connection piece (4) is threadedly connected to the connection tube.

3. The segmented anchoring slope protection device according to claim 2 is characterized in that: The connecting piece (4) is composed of a suction cup (4-1) and a connecting shell (4-2); a threaded hole matching the connecting tube is provided on the inner end surface of the connecting shell (4-2); the outer end surface of the connecting shell (4-2) matches the inner end surface of the suction cup (4-1); the suction cup (4-1) and the connecting shell (4-2) are both made of metal permanent magnetic material; the inner end surface of the suction cup (4-1) and the outer end surface of the connecting shell (4-2) attract and contact each other.

4. The segmented anchoring slope protection device according to claim 3 is characterized in that: The connector (4) is provided with a rubber sleeve outside, the rubber sleeve wraps the suction cup (4-1) and the connecting shell (4-2) inside, and the inner end of the rubber sleeve contacts the outer side surface of the anchor pad (3).

5. The segmented anchoring slope protection device according to claim 1, 2, 3 or 4, characterized in that: The plurality of anchoring points are distributed in an array.

6. The segmented anchoring slope protection device according to claim 5 is characterized in that: The prestressed anchor rod (2) and the steel strand (5) which match each other are coaxially arranged.

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