A deep rock-soil reinforcing structure

Abstract

The utility model relates to the field of geotechnical construction technology, concretely to a deep stratum reinforcing structure, including hollow screw rod, reinforcing rod, sleeve, the both ends of hollow screw rod are screwed with anchor head and nut respectively, reinforcing rod surface is equipped with the reinforcing piece of integrated moulding, reinforcing rod inserts the inside of hollow screw rod, reinforcing piece size matches with the inner wall of hollow screw rod and forms the cavity with hollow screw rod, the sleeve is connected in the surface of hollow screw rod, the outside of sleeve is connected with the stop plug, the surface of stop plug is equipped with a plurality of sockets, and the grouting limiting piece is installed on the hollow screw rod. The utility model utilizes reinforcing rod to support hollow screw rod, improves the bending resistance of anchor rod, and the anchor rod is not easy to bend and deform, reduces the probability of the appearance of easy breaking point, and the cavity between reinforcing rod and hollow screw rod does not affect the injection of concrete slurry, improves the anchoring stability of slender anchor rod.

Description

Technical Field

[0001] This utility model relates to the field of geotechnical construction technology, specifically to a deep geotechnical reinforcement structure. Background Technology

[0002] In engineering projects such as mining, tunneling, and slope protection, anchor points are established by drilling to facilitate the installation of related components. However, drilling disrupts the original equilibrium of the rock and soil, causing them to become loose and unstable. Therefore, anchor rods are needed for reinforcement. Once inserted into the rock and soil mass, the anchor rods can bond tightly with the rock and soil, improving the stability of the rock and soil mass.

[0003] Among the relevant technologies, a search revealed that the grouting anchor bolt (announcement number CN214328855U) solution can determine the required number of bolt sections according to the actual situation, then connect the bolt sections sequentially through the spline between the outer spline shaft and the inner spline sleeve, and finally lock the relative positions between adjacent bolt sections through a locking structure, thus splicing together the grouting anchor bolt of the required length.

[0004] The above-mentioned anchor bolt is a commonly used type. Since anchor bolts vary in thickness and length, some thin and long anchor bolts have weak bending resistance. In addition, since anchor bolts are hollow structures, they are prone to breakage when bent, resulting in unstable anchoring performance. Utility Model Content

[0005] The purpose of this invention is to provide a deep soil and rock reinforcement structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A deep soil and rock reinforcement structure includes a hollow screw, a reinforcing rod, and a sleeve; Anchor heads and nuts are screwed to both ends of the hollow screw. The threaded grooves on the surface of the hollow screw, together with the concrete grout, can stably connect with the rock and soil, providing stable support for the rock and soil and effectively preventing the hollow screw from loosening. The reinforcing rod has an integrally formed reinforcing member on its surface. The reinforcing rod is inserted into the hollow screw. The size of the reinforcing member matches the inner wall of the hollow screw and forms a cavity with the hollow screw, which can ensure the smooth injection of concrete slurry and simplify the grouting difficulty. The sleeve is connected to the surface of the hollow screw, and a grout stopper is connected to the outside of the sleeve to achieve precise sealing and limiting during the grouting process and prevent concrete grout leakage. The surface of the grout stopper is provided with several insertion ports to simplify the installation of the grouting pipe. A grouting limiting component is installed on the hollow screw, and the grouting limiting component is connected to the grout stopper to fix the grout stopper. The grout stopper can be stably inserted into the hole in the rock and soil.

[0007] Furthermore, the anchor head surface is provided with several blades and grout outlets, which are staggered. The blades can cut the soil and rock when the anchor head is screwed into deep soil and rock, reducing the screwing resistance and allowing the anchor head to quickly reach the preset reinforcement depth. During grouting, the grout flows out smoothly from the grout outlets, evenly filling the voids in the soil and rock around the anchor head and enhancing the anchoring force between the hollow screw and the soil and rock.

[0008] Furthermore, a connecting sleeve is connected to the end of the hollow screw, and the connecting sleeve is installed between two hollow screws to realize the splicing of multiple hollow screws. The total length of the hollow screw can be flexibly adjusted according to the reinforcement depth requirements of deep soil and rock, and adapt to the depth requirements of different engineering scenarios.

[0009] Furthermore, the grouting limiting component includes a baffle and a protruding plate. The surface of the baffle is provided with a sealing ring that is inserted into the grout stop plug, which effectively prevents the leakage of concrete grout and makes the filling of soil and rock more compact. The protruding plate is located on the upper surface of the baffle and has an insertion hole on its surface. A grouting pipe is inserted into the insertion hole and passes through the insertion hole, which facilitates and simplifies the grouting operation.

[0010] Furthermore, the reinforcing rod is cylindrical, and the reinforcing member is a spiral blade, which improves the torsional and bending resistance of the hollow screw. The spiral cavity structure allows the concrete slurry to form a spiral flow during injection, promoting the uniform distribution of the concrete slurry inside the screw.

[0011] Furthermore, the reinforcing rod and the reinforcing member are integrally formed inserts, and the surface of the insert has a U-shaped groove to improve the bending resistance of the hollow screw. The U-shaped groove provides space for the flow of concrete slurry, so that the slurry forms a stable flow channel in the tank.

[0012] Furthermore, the reinforcing rod and the reinforcement are integrally formed into a three-pronged rod, and the surface of the three-pronged rod has a V-shaped groove, which can both reinforce the hollow screw and not affect the flow of concrete slurry.

[0013] Compared with the prior art, the beneficial effects of this utility model are: (1) The hollow screw is supported by the reinforcing rod, which improves the bending resistance of the anchor rod. The anchor rod is not easy to bend and deform, reducing the probability of easy breakage. There is a cavity between the reinforcing rod and the hollow screw rod, which does not affect the injection of concrete grout and improves the anchoring stability of the slender anchor rod.

[0014] (2) Concrete grout can be injected using hollow screws or grouting pipes, providing two grouting methods. The grouting method can be flexibly adjusted according to the construction site conditions, making it highly adaptable.

[0015] (3) Two hollow screws can be connected by a connecting sleeve to splice an anchor rod of the required length. The splicing operation is simple. Attached Figure Description

[0016] Figure 1 This is a structural diagram showing the disassembled parts of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 This is a schematic diagram showing the disassembly of the baffle and the slurry stop plug of this utility model; Figure 4 This is a schematic diagram of the U-shaped groove of this utility model; Figure 5 This is a schematic diagram of the V-groove structure of this utility model; Figure 6 This is a schematic diagram of the hollow screw splicing structure of this utility model.

[0017] In the diagram: 1. Hollow screw; 2. Anchor head; 3. Grout outlet; 4. Blade; 5. Connecting sleeve; 6. Grouting pipe; 7. Sleeve; 8. Grout stop plug; 9. Baffle; 10. Nut; 11. Protruding plate; 12. Insertion hole; 13. Reinforcing rod; 14. Reinforcing component; 15. Insertion port; 16. Sealing ring; 17. U-shaped groove; 18. V-shaped groove. Detailed Implementation

[0018] 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.

[0019] Example: Please see Figure 1-6 This utility model provides a technical solution: A deep soil and rock reinforcement structure includes a hollow screw 1, a reinforcing rod 13, and a sleeve 7. The surface of the hollow screw 1 has a threaded groove, which has an anti-slip function. When the hollow screw 1 enters the soil and rock, it can improve the insertion stability of the hollow screw 1. The hollow screw 1 is screwed with an anchor head 2 and a nut 10 at both ends. The anchor head 2 can be drilled in the rock and soil, and the nut 10 can push the baffle 9 to block the grout stop plug 8 to prevent concrete grout leakage. The reinforcing rod 13 has an integrally formed reinforcing member 14 on its surface. The reinforcing rod 13 is inserted into the hollow screw 1 to improve the structural strength and bending resistance of the hollow screw 1. The reinforcing rod 13 and the hollow screw 1 can be connected by a lighter interference fit, or by spot welding. Alternatively, the blanks of the hollow screw 1 and the reinforcing rod 13 can be manufactured by casting, molds, or other methods. The dimensions of the reinforcing member 14 match the inner wall of the hollow screw 1 and form a cavity with the hollow screw 1. The cavity ensures that the reinforcing rod 13 and the reinforcing member 14 do not block the hollow screw 1 and do not affect the injection of concrete grout. The sleeve 7 is connected to the surface of the hollow screw 1. A grout stop plug 8 is connected to the outside of the sleeve 7. The surface of the grout stop plug 8 is provided with several insertion ports 15, providing multiple penetration points for the grouting pipe 6. A grouting limiting component is installed on the hollow screw 1. The grouting limiting component is connected to the grout stop plug 8. The grout stop plug 8 blocks the holes in the rock and soil. The grouting limiting component can prevent concrete grout from flowing out and can also be used for grouting.

[0020] In this embodiment, as Figure 1 As shown, the surface of the anchor head 2 is provided with several blades 4 and grout outlets 3. The blades 4 are arranged in a ring, and the size of their drill holes is slightly larger than the outer diameter of the connecting sleeve 5, so as not to affect the connecting sleeve 5 from entering the soil and rock. Depending on the grouting method, the grout outlets 3 can discharge concrete grout or air to ensure the smooth injection of concrete grout. The blades 4 and grout outlets 3 are staggered, so grouting and drilling do not affect each other. When the anchor head 2 drills into the soil and rock, the blades 4 can cut the soil and rock, thereby improving drilling efficiency.

[0021] In this embodiment, as Figure 1 and Figure 6 As shown, the hollow screw 1 is connected to a connecting sleeve 5 at its end. The connecting sleeve 5 is installed between two hollow screws 1. When multiple hollow screws 1 need to be spliced, two hollow screws 1 can be screwed into the connecting sleeve 5. The splicing length of the hollow screws 1 can be flexibly adjusted according to the drilling depth of the rock and soil, making construction flexible and convenient.

[0022] In this embodiment, as Figure 2 and Figure 3 As shown, the grouting limiting component includes a baffle 9 and a protruding plate 11. The surface of the baffle 9 is provided with a sealing ring 16 that is inserted into the grout stop plug 8. The sealing ring 16 can be made of flexible materials such as rubber, which can fill the gap between the baffle 9 and the grout stop plug 8, resulting in good concrete grout leakage prevention. The protruding plate 11 is located on the upper surface of the baffle 9. The surface of the protruding plate 11 is provided with an insertion hole 12. The size of the insertion hole 12 and the insertion opening 15 is larger than that of the grouting pipe 6. The grouting pipe 6 is inserted into the insertion hole 12 and passes through the insertion opening 15. The grouting pipe 6 can be made of a flexible rubber tube, which allows the grouting pipe 6 to have a certain bending ability, ensuring that the grouting pipe 6 can flexibly pass through the insertion hole 12 and the insertion opening 15.

[0023] In this embodiment, as Figure 2 As shown, the reinforcing rod 13 is cylindrical, and the reinforcing member 14 is a spiral blade. For thicker hollow screws 1, such as those with an outer diameter of 30mm or more, the reinforcing rod 13 and the spiral blade can be used for reinforcement. The spiral blade and the reinforcing rod 13 together reinforce the hollow screw 1. The spiral blade and the hollow screw 1 form a spiral flow channel, which will not block the air discharge or the inflow of concrete slurry.

[0024] In this embodiment, as Figure 4 As shown, the reinforcing rod 13 and the reinforcing member 14 are integrally formed insert rods. The surface of the insert rod has a U-shaped groove 17. For thinner hollow screw rods 1, such as those with an outer diameter of less than 30mm, the reinforcing rod 13 is inserted into the hollow screw rod 1 for reinforcement. The arc-shaped part of the insert rod fits against the hollow screw rod 1 to provide support. The U-shaped groove 17 allows air to be discharged or concrete slurry to flow in.

[0025] In this embodiment, as Figure 5 As shown, the reinforcing rod 13 and the reinforcing member 14 are integrally formed three-pronged rods. The surface of the three-pronged rod has a V-shaped groove 18. After the three-pronged rod is inserted into the hollow screw rod 1, its bending resistance is improved. The V-shaped groove 18 can reserve space for air discharge or concrete slurry inflow.

[0026] Other types of reinforcing rods 13 can also be used to support the hollow screw 1, such as right-angled reinforcing rods 13, triangular reinforcing rods 13, and prism-shaped reinforcing rods 13.

[0027] Specifically, during use, a drill bit is installed on the hollow screw 1, and the hollow screw 1 is connected to the drilling equipment. The hollow screw 1 and the drill bit rotate synchronously to drill holes in the rock and soil and enter the interior of the rock and soil. Drilling is stopped just before a section of the hollow screw 1 is about to completely enter the rock and soil, so that part of the hollow screw 1 remains on the outside. Another section of the hollow screw 1 and the connecting sleeve 5 can be used to splice and lengthen the hollow screw 1. When injecting concrete grout, sleeve 7 and baffle 9 are sequentially placed on hollow screw rod 1, and then nut 10 is screwed onto hollow screw rod 1. Nut 10 moves on hollow screw rod 1 and presses protruding plate 11, so that grout stop plug 8 is inserted into the hole of rock and soil and blocks the hole. There are two grouting methods. One is to directly connect the grouting pipe to the hollow screw rod 1. The mixed soil will flow from the grout outlet 3 of the anchor head 2 into the hole of the rock and soil. The air in the hole will be discharged from the insertion hole 12. This grouting method is mainly used for upward grouting, that is, the anchor rod enters the rock and soil upward. Another grouting method involves inserting the grouting pipe 6 into the insertion hole 12 and passing the grouting pipe 6 through the insertion port 15. At this time, the grouting pipe 6 enters the hole of the rock and soil. The grout delivery pipe is connected to the grouting pipe 6, and the concrete grout flows into the hole of the rock and soil. Air is discharged from the grout outlet 3 and the hollow screw 1. This grouting method is mainly used for downward grouting. Concrete grout is filled between the hollow screw rod 1 and the soil and rock. After the concrete grout solidifies, it supports and reinforces the soil and rock, while ensuring that the anchor rod is not easy to fall off, providing a stable anchor point for subsequent construction.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A deep soil and rock reinforcement structure, characterized in that, include: Hollow screw (1), with anchor head (2) and nut (10) screwed to both ends of the hollow screw (1); A reinforcing rod (13) is provided with an integrally formed reinforcing member (14) on its surface. The reinforcing rod (13) is inserted into the hollow screw (1). The size of the reinforcing member (14) matches the inner wall of the hollow screw (1) and forms a cavity with the hollow screw (1). A sleeve (7) is connected to the surface of a hollow screw (1). A grout stop plug (8) is connected to the outside of the sleeve (7). The surface of the grout stop plug (8) is provided with several insertion ports (15). A grouting limiting component is installed on the hollow screw (1). The grouting limiting component is connected to the grout stop plug (8).

2. The deep soil and rock reinforcement structure according to claim 1, characterized in that: The anchor head (2) has several blades (4) and slurry outlets (3) on its surface, and the blades (4) and slurry outlets (3) are staggered.

3. The deep soil and rock reinforcement structure according to claim 1, characterized in that: The hollow screw (1) is connected to a connecting sleeve (5) at its end, and the connecting sleeve (5) is installed between the two hollow screws (1).

4. The deep soil and rock reinforcement structure according to claim 1, characterized in that: The grouting limiting component includes a baffle (9) and a protruding plate (11). The surface of the baffle (9) is provided with a sealing ring (16) that is inserted into the grout stop plug (8). The protruding plate (11) is located on the upper surface of the baffle (9). The surface of the protruding plate (11) is provided with an insertion hole (12).

5. A deep soil and rock reinforcement structure according to claim 4, characterized in that: A grouting pipe (6) is inserted into the socket (12), and the grouting pipe (6) passes through the socket (15).

6. The deep soil and rock reinforcement structure according to claim 1, characterized in that: The reinforcing rod (13) is cylindrical, and the reinforcing member (14) is a spiral blade.

7. A deep soil and rock reinforcement structure according to claim 1, characterized in that: The reinforcing rod (13) and the reinforcing member (14) are integrally formed inserts, and the surface of the insert has a U-shaped groove (17).

8. A deep soil and rock reinforcement structure according to claim 1, characterized in that: The reinforcing rod (13) and the reinforcing member (14) are integrally formed three-pronged rods, and the surface of the three-pronged rods has a V-groove (18).

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