Tunnel pre-stressed anchor rod

Abstract

The utility model relates to the technical field of tunnel construction, and discloses a tunnel pre-stressed anchor rod which comprises a plurality of anchor rod single pieces, the anchor rod single pieces are spliced to form an anchor rod body, and grouting holes are formed in the anchor rod body. The reinforcing mechanism is located on the outer wall of the anchor rod body and used for reinforcing the anchor rod body to the tunnel wall, the reinforcing mechanism comprises a moving mechanism and an expansion mechanism, the moving mechanism is located on one side of the anchor rod body and used for fixing the anchor rod body, and the expansion mechanism is located on the outer wall of the anchor rod body and used for reinforcing the anchor rod body; through the arrangement of the reinforcing mechanism, the anchor rod body can be reinforced after being inserted into the tunnel, the situation that the anchor rod body displaces or deforms in the tunnel wall is avoided, the long-term safety of the tunnel is improved, and therefore the overall stability of the tunnel is improved, meanwhile, the construction difficulty and complexity of the device are reduced, the construction period is shortened, and the construction efficiency is improved. The engineering cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a tunnel prestressed anchor rod. Background Art

[0002] Tunnel prestressed anchors are a reinforcement technology used to improve tunnel structural stability and bearing capacity. They primarily embed anchors in the tunnel rock and soil and apply prestress to enhance the bearing capacity and integrity of the surrounding soil. They are primarily used in tunnel excavation, support, and reinforcement stages to effectively resist ground deformation and improve the structure's shear strength and collapse resistance.

[0003] Chinese Patent Publication No. CN212454484U discloses a tunnel anchor, comprising an anchor pad connected to one end of an anchor body, the other end of which is provided with an anchor head. The anchor body is composed of a plurality of anchor rod units spliced ​​together, each having a positioning hole at one end and a positioning rod at the other end, the positioning rod being provided with a prestressed spring. The anchor body of the device is formed by connecting the anchor rod units, and thus the length of the anchor rod can be lengthened or shortened by increasing or decreasing the number of anchor rod units, thereby better adapting to different working conditions, facilitating application in actual construction, and having the characteristics of flexibility and practicality. However, in the existing device, when in use, the anchor body is formed by splicing the anchor rod units together and then pre-buried in the tunnel, which can better adapt to different working conditions. However, after the anchor body is inserted into the tunnel, it is difficult to reinforce it with the tunnel, resulting in displacement or deformation of the anchor body within the tunnel wall, affecting the long-term safety of the tunnel, thereby reducing the overall stability of the tunnel, and increasing the complexity and difficulty of construction, extending the construction period, and increasing the project cost. Utility Model Content

[0004] The purpose of the utility model is to provide a tunnel prestressed anchor rod, which solves the problem in the background art that it is difficult to reinforce the anchor rod body with the tunnel after the anchor rod body is inserted into the tunnel.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A tunnel prestressed anchor rod, comprising:

[0007] A plurality of anchor rod pieces, wherein the plurality of anchor rod pieces are spliced ​​together to form an anchor rod body, and a grouting hole is opened inside the anchor rod body;

[0008] A reinforcement mechanism, which is located on the outer wall of the anchor rod body and is used to reinforce the anchor rod body on the tunnel wall. The reinforcement mechanism includes a moving mechanism and an expansion mechanism. The moving mechanism is located on one side of the anchor rod body and is used to fix the anchor rod body. The expansion mechanism is located on the outer wall of the anchor rod body and is used to reinforce the anchor rod body.

[0009] Preferably, the movable mechanism includes a thread arranged on the outer wall of one side of the anchor rod body and a movable sleeve installed on the outer wall of the thread, the outer wall of the movable sleeve is provided with multiple evenly distributed rings, and one side of the multiple rings is provided with a connecting mechanism for connecting the multiple rings.

[0010] Preferably, the connecting mechanism includes a connecting block fixed to the outer walls of the plurality of collars and a base provided on one side of the anchor rod body, a reinforcing plate is fixed to the top of the connecting block, and the reinforcing plate is connected to the base.

[0011] Preferably, the expansion mechanism includes a plurality of reinforcement seats installed on the outer wall of the anchor rod body, and a card is installed on one side of each of the plurality of reinforcement seats, and the card is inclined.

[0012] Preferably, a sealing plate is fixed to one side of the anchor rod body, and the anchor rod body extends to one side of the sealing plate and is fixed with a top cap.

[0013] Preferably, a disassembly and assembly mechanism for facilitating the disassembly and assembly of the reinforcement seat is provided between the reinforcement seat and the anchor rod body, the disassembly and assembly mechanism includes a linkage rod fixed to the bottom of the reinforcement seat, a slot hole for the linkage rod to be inserted is provided on the outer wall of the anchor rod body, an insertion rod is inserted into one side of the slot hole, the insertion rod is plugged into the linkage rod, a receiving groove is provided on one side of the anchor rod body, the insertion rod extends to the inside of the receiving groove and is fixed with a baffle, a spring is connected between the baffle and the receiving groove, and a control mechanism for controlling the insertion rod is provided on the top of the insertion rod.

[0014] Preferably, the control mechanism includes a moving rod fixed on the top of the insertion rod, the moving rod extends to the top of the anchor rod body and is fixed with a control plate, and the top of the anchor rod body is provided with a moving groove for the moving rod to move.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0016] 1. The present invention, through the provision of a reinforcement mechanism, can reinforce the anchor rod body after it is inserted into the tunnel, thereby preventing the anchor rod body from displacement or deformation in the tunnel wall, increasing the long-term safety of the tunnel, thereby improving the overall stability of the tunnel, and at the same time reducing the construction difficulty and complexity of the device, shortening the construction period, and saving engineering costs;

[0017] 2. The utility model can realize the rapid disassembly of the reinforcement seat through the setting of the disassembly and assembly mechanism, and facilitate the replacement of different reinforcement seats, so that the reinforcement mechanism can be flexibly adjusted and can adapt to different construction environments, greatly improving the flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic structural diagram of the reinforcement mechanism of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the reinforcement mechanism of the utility model when it is disassembled;

[0021] Figure 4 This is a cross-sectional view of a single anchor rod of the utility model;

[0022] Figure 5 It is a structural diagram of the disassembly and assembly mechanism of the utility model.

[0023] Among them: 1. Anchor rod body; 2. Reinforcement mechanism; 3. Anchor rod; 4. Grouting hole; 5. Closing plate; 6. Top cap; 7. Insert rod; 8. Spring; 9. Control panel; 10. Baffle; 11. Linkage rod;

[0024] 21. Base; 22. Reinforcement plate; 23. Ring; 24. Moving sleeve; 25. Connecting block; 26. Reinforcement seat; 27. Card. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Please refer to Figure 1 , a tunnel prestressed anchor rod, comprising:

[0027] A plurality of anchor rod pieces 3 are spliced ​​together to form an anchor rod body 1, and a grouting hole 4 is opened inside the anchor rod body 1; a sealing plate 5 is fixed to one side of the anchor rod body 1, and the anchor rod body 1 extends to one side of the sealing plate 5 and is fixed with a top cap 6.

[0028] Please refer to Figure 2 、 Figure 3 and Figure 4, reinforcement mechanism 2, the reinforcement mechanism 2 is located on the outer wall of the anchor rod body 1 and is used to reinforce the anchor rod body 1 on the tunnel wall, the reinforcement mechanism 2 includes a moving mechanism and an expansion mechanism, the moving mechanism is located on one side of the anchor rod body 1 and is used to fix the anchor rod body 1, the expansion mechanism is located on the outer wall of the anchor rod body 1 and is used to reinforce the anchor rod body 1, the moving mechanism includes a thread arranged on the outer wall of one side of the anchor rod body 1 and a movable sleeve 24 installed on the outer wall of the thread, the outer wall of the movable sleeve 24 is provided with a plurality of evenly distributed rings 23, one side of the plurality of rings 23 is provided with a connecting mechanism for connecting the plurality of rings 23, the connecting mechanism includes a connecting block 25 fixed to the outer wall of the plurality of rings 23 and a base 21 arranged on one side of the anchor rod body 1, a reinforcement plate 22 is fixed on the top of the connecting block 25, the reinforcement plate 22 is connected to the base 21, the expansion mechanism includes a plurality of reinforcement seats 26 installed on the outer wall of the anchor rod body 1, and a card 27 is installed on one side of the plurality of reinforcement seats 26, and the card 27 is inclined.

[0029] The collar 23 and the movable sleeve 24 both have inclined portions inside, and the two inclined portions cooperate with each other, and the inclination of the card 27 does not exceed the height of the collar 23 and the movable sleeve 24, so as to facilitate the anchor body 1 to enter the tunnel wall. The card 27 is made of rubber and has elasticity;

[0030] Rotating the anchor rod body 1 drives the thread to rotate, so that the movable sleeve 24 moves synchronously with the anchor rod body 1. Through the movement of the movable sleeve 24, it enters the ring 23, so that the ring 23 expands. Through the setting of the reinforcement plate 22, the ring 23 can be effectively reinforced during the expansion process, avoiding the ring 23 from falling off, increasing the stability of the utility model, and at the same time, through the expansion of the ring 23, it is in conflict with the tunnel wall. Through the movement of the anchor rod body 1, the card 27 is synchronously in conflict with the tunnel wall, so that the anchor rod body 1 can be effectively reinforced in the tunnel wall.

[0031] Please also refer to Figure 1 and Figure 5 A disassembly and assembly mechanism is provided between the reinforcement seat 26 and the anchor rod body 1 for facilitating the disassembly and assembly of the reinforcement seat 26. The disassembly and assembly mechanism includes a linkage rod 11 fixed to the bottom of the reinforcement seat 26. A slot is provided on the outer wall of the anchor rod body 1 for inserting the linkage rod 11. A plug rod 7 is inserted on one side of the slot. The plug rod 7 is plugged into the linkage rod 11. A receiving groove is provided on one side of the anchor rod body 1. The plug rod 7 extends to the inside of the receiving groove and is fixed with a baffle 10. A spring 8 is connected between the baffle 10 and the receiving groove. A control mechanism for controlling the plug rod 7 is provided on the top of the plug rod 7. The control mechanism includes a moving rod fixed to the top of the plug rod 7. The moving rod extends to the top of the anchor rod body 1 and is fixed with a control plate 9. The top of the anchor rod body 1 is provided with a moving groove for the moving rod to move.

[0032] Pulling the control plate 9 drives the moving rod to move in the moving groove, and the movement of the moving rod drives the insertion rod 7 to move, and the movement of the insertion rod 7 drives the baffle 10 to move synchronously, and the movement of the baffle 10 drives the spring 8 to contract. The contraction of the spring 8 separates the insertion rod 7 from the linkage rod 11. After the insertion rod 7 and the linkage rod 11 are separated from each other, the reinforcement seat 26 is pulled to drive the card 27 to separate from the anchor rod body 1, so that the card 27 can be disassembled, which is convenient for the user to replace the card 27 that is compatible with the tunnel wall, thereby improving the flexibility of the present utility model.

[0033] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel prestressed anchor rod, characterized in that: include: A plurality of anchor rod single pieces (3), wherein the plurality of anchor rod single pieces (3) are spliced ​​together to form an anchor rod body (1), and a grouting hole (4) is provided inside the anchor rod body (1); A reinforcement mechanism (2) is provided, wherein the reinforcement mechanism (2) is located on the outer wall of the anchor rod body (1) and is used to reinforce the anchor rod body (1) on the tunnel wall. The reinforcement mechanism (2) comprises a moving mechanism and an expansion mechanism. The moving mechanism is located on one side of the anchor rod body (1) and is used to fix the anchor rod body (1). The expansion mechanism is located on the outer wall of the anchor rod body (1) and is used to reinforce the anchor rod body (1).

2. A tunnel prestressed anchor rod according to claim 1, characterized in that: The movable mechanism comprises a thread provided on the outer wall of one side of the anchor rod body (1) and a movable sleeve (24) installed on the outer wall of the thread; the outer wall of the movable sleeve (24) is provided with a plurality of evenly distributed collars (23); and a connecting mechanism for connecting the plurality of collars (23) is provided on one side of the plurality of collars (23).

3. The tunnel prestressed anchor rod according to claim 2, characterized in that: The connecting mechanism comprises a connecting block (25) fixed on the outer walls of a plurality of collars (23) and a base (21) arranged on one side of the anchor rod body (1); a reinforcing plate (22) is fixed on the top of the connecting block (25), and the reinforcing plate (22) is connected to the base (21).

4. The tunnel prestressed anchor rod according to claim 1, characterized in that: The expansion mechanism comprises a plurality of reinforcement seats (26) mounted on the outer wall of the anchor rod body (1), and a card (27) is mounted on one side of each of the plurality of reinforcement seats (26), and the card (27) is inclined.

5. The tunnel prestressed anchor rod according to claim 1, characterized in that: A sealing plate (5) is fixed to one side of the anchor rod body (1), and the anchor rod body (1) extends to one side of the sealing plate (5) and is fixed to a top cap (6).

6. The tunnel prestressed anchor rod according to claim 4, characterized in that: A disassembly and assembly mechanism for facilitating the disassembly and assembly of the reinforcement seat (26) is provided between the reinforcement seat (26) and the anchor rod body (1), the disassembly and assembly mechanism comprising a linkage rod (11) fixed to the bottom of the reinforcement seat (26), a slot hole for inserting the linkage rod (11) is provided on the outer wall of the anchor rod body (1), a plug rod (7) is inserted into one side of the slot hole, the plug rod (7) is plugged into the linkage rod (11), a receiving groove is provided on one side of the anchor rod body (1), the plug rod (7) extends to the inside of the receiving groove and is fixed with a baffle (10), a spring (8) is connected between the baffle (10) and the receiving groove, and a control mechanism for controlling the plug rod (7) is provided at the top of the plug rod (7).

7. The tunnel prestressed anchor rod according to claim 6, characterized in that: The control mechanism comprises a moving rod fixed on the top of the insertion rod (7), the moving rod extending to the top of the anchor rod body (1) and fixed with a control plate (9), and a moving groove for the moving rod to move is provided on the top of the anchor rod body (1).

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