Foundation pit supporting structure with shotcrete anchor hanging net

Abstract

The utility model discloses a shotcrete anchor hanging net foundation pit supporting structure which comprises a reinforcing mesh, a plurality of positioning cylinders are distributed on the reinforcing mesh, and the positioning cylinders penetrate through meshes of the reinforcing mesh. Supporting plates and meshes used for supporting a reinforcing mesh are arranged on the positioning cylinders in a sliding mode, fixing frames are fixed to the surfaces of the supporting plates, nuts are connected to the surfaces of the positioning cylinders in a threaded mode and used for pushing the supporting plates to enable the fixing frames to be close to the reinforcing mesh, and limiting frames are installed among the multiple supporting plates. The device has the beneficial effects that a top block is pushed through a movable rod, the top block is used for pushing two clamping rods, the clamping rods are inserted into the inner wall of a drill hole, the firmness of a positioning barrel and the drill hole in the side wall of a foundation pit is improved, a gap between the positioning barrel and the drill hole is filled with concrete, the attaching stability of a reinforcing mesh and a slope protection can be further improved through a limiting frame, and the situation that after sand blasting, sand blasting is conducted is avoided. And the reinforcing mesh cannot deform due to the sand blasting weight, so that the timeliness and strength of the supporting effect are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and specifically relates to a sprayed anchor hanging net foundation pit supporting structure. Background Art

[0002] Spray anchor mesh is a common form of foundation pit support. The steel mesh is fixed to the side wall of the foundation pit by anchor rods, and then mortar is sprayed onto the steel mesh so that the concrete mortar wraps the steel mesh, thereby strengthening the foundation pit and preventing collapse. However, under the influence of thermal expansion and contraction, the anchor rods inserted into the side wall of the foundation pit are prone to loosening, which leads to a partial lack of tension in the steel mesh and a gap between the steel mesh and the side wall of the foundation pit. At the same time, the concrete wrapping the steel mesh increases the deadweight of the steel mesh. The steel mesh will deform under the pull of the huge weight, causing the concrete to lose adhesion with the side wall of the foundation pit, greatly reducing the support effect. Summary of the invention

[0003] In order to solve the above problems, the purpose of the utility model is to provide a sprayed anchor hanging mesh foundation pit support structure, as described below in detail.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The utility model provides a sprayed anchor hanging mesh foundation pit support structure, comprising a steel mesh, on which a plurality of positioning tubes are distributed, and the positioning tubes pass through the meshes of the steel mesh;

[0006] A support plate is slidably arranged on the positioning cylinder to support the mesh of the steel mesh, a fixing frame is fixed on the surface of the support plate, a nut is threadedly connected on the surface of the positioning cylinder to push the support plate so that the fixing frame is close to the steel mesh, and a limited position frame is installed between several of the support plates;

[0007] Two fixing sleeves are symmetrically arranged on the surface of the positioning cylinder, and the fixing sleeves are connected to the positioning cylinder. A clamping rod is slidably arranged in the fixing sleeve, and arc blocks are arranged at opposite ends of the two clamping rods. A movable rod is slidably arranged at the end of the positioning cylinder, and a top block is fixed at the end of the movable rod. The top block is located between the two arc blocks and is used to push the two arc blocks to move the two arc blocks away from each other.

[0008] Using the above-mentioned sprayed anchor hanging mesh foundation pit support structure, firstly, corresponding holes are drilled on the slope protection according to the arrangement position of the positioning tubes, and the diameter of the holes needs to be able to accommodate the positioning tubes and the fixing sleeves thereon;

[0009] Lay the steel mesh on the slope protection of the foundation pit, then pass the positioning cylinder through the mesh of the steel mesh and insert it into the hole on the slope protection, then use a hammer to hit the movable rod to push the top block, use the top block to push the two clamping rods, so that the clamping rods are inserted into the inner wall of the drilled hole, and then fill the concrete between the positioning cylinder and the drilled hole;

[0010] Slide the support plate onto the positioning cylinder and insert the support plate into the mesh of the steel mesh. Rotate the nut to push the support plate so that it is in close contact with the slope protection. The support plate supports the steel mesh and the fixing frame cooperates with the slope protection to clamp the steel mesh.

[0011] The limit frame is installed between several support plates. The limit frame improves the stability of several support plates and the positioning tube. At the same time, the limit frame can improve the stability of the fit between the steel mesh and the slope protection. Finally, mortar is sprayed on the slope protection until the mortar covers all the limit frames and steel meshes.

[0012] Preferably, the movable rod is rectangular, and its end passes through the end of the positioning tube.

[0013] Preferably, a fixing block is fixed on the surface of the clamping rod, and the fixing block passes through the fixing sleeve, and the fixing block is made of plastic.

[0014] Preferably, a plurality of fixing rods are arranged on the surface of the positioning cylinder.

[0015] Preferably, mounting holes are provided at the four corners of the support plate, bolts are inserted through the four corners of the limit frame, and the bolts are threadedly connected to the mounting holes.

[0016] Preferably, the size of the fixing frame is larger than the mesh of the steel mesh.

[0017] Preferably, one end of the positioning tube away from the movable rod is closed.

[0018] Preferably, the length of the fixing rod is less than or equal to that of the fixing sleeve.

[0019] The beneficial effects are:

[0020] The top block is pushed by the movable rod, and the two clamping rods are pushed by the top block so that the clamping rods are inserted into the inner wall of the borehole, thereby improving the firmness of the positioning cylinder and the borehole on the side wall of the foundation pit. The gap between the positioning cylinder and the borehole is filled with concrete to further improve the firmness of the positioning cylinder installation.

[0021] The steel mesh is supported by the support plate, and the steel mesh is clamped by the fixed frame and the slope protection to improve the stability of the steel mesh and the pulling force on the concrete to avoid its deformation;

[0022] The limit frame can further improve the stability of the fit between the steel mesh and the slope protection, and avoid the steel mesh being unable to withstand the weight of the sandblasting and deforming after sandblasting, thereby ensuring the timeliness and strength of the support effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a front view structural diagram of the utility model;

[0025] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of the positioning cylinder of the utility model;

[0027] Figure 4 It is a schematic diagram of the cross-sectional structure of the positioning cylinder of the utility model when viewed from above.

[0028] The following are the descriptions of the reference numerals:

[0029] 1. Steel mesh; 2. Limit frame; 3. Bolt; 4. Mounting hole; 5. Support plate; 6. Fixed frame; 7. Positioning cylinder; 8. Nut; 9. Fixed rod; 10. Fixed sleeve; 11. Clamp rod; 12. Fixed block; 13. Movable rod; 14. Top block; 15. Arc block. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0031] See also Figure 1-Figure 4 As shown, the utility model provides a spray anchor hanging mesh foundation pit support structure, including a steel mesh 1, a plurality of positioning tubes 7 are distributed on the steel mesh 1, and the positioning tubes 7 pass through the mesh of the steel mesh 1;

[0032] A support plate 5 is slidably arranged on the positioning cylinder 7 to support the mesh of the steel mesh 1. A fixing frame 6 is fixed on the surface of the support plate 5. A nut 8 is threadedly connected on the surface of the positioning cylinder 7 to push the support plate 5 so that the fixing frame 6 is close to the steel mesh 1. A limited position frame 2 is installed between several support plates 5.

[0033] Two fixing sleeves 10 are symmetrically arranged on the surface of the positioning cylinder 7, and the fixing sleeve 10 is connected with the positioning cylinder 7. A clamping rod 11 is slidably arranged in the fixing sleeve 10, and arc blocks 15 are arranged at the opposite ends of the two clamping rods 11. A movable rod 13 is slidably arranged at the end of the positioning cylinder 7, and a top block 14 is fixed at the end of the movable rod 13. The top block 14 is located between the two arc blocks 15 and is used to push the two arc blocks 15 to move the two arc blocks 15 away from each other.

[0034] As an optional implementation, the movable rod 13 is rectangular, and one end thereof passes through the end of the positioning tube 7 .

[0035] A fixing block 12 is fixed on the surface of the clamp rod 11, and the fixing block 12 passes through the fixing sleeve 10, and the fixing block 12 is made of plastic;

[0036] The fixing block 12 is used to stabilize the card rod 11 to prevent the card rod 11 from sliding out of the fixing sleeve 10 and being lost. When the card rod 11 needs to be moved, the fixing block 12 can be easily separated from the card rod 11 under the action of external force.

[0037] A plurality of fixing rods 9 are arranged on the surface of the positioning tube 7. The fixing rods 9 are combined with the filled cement to improve the firmness of the positioning tube 7 installed in the drilled hole.

[0038] Mounting holes 4 are provided at the four corners of the support plate 5, bolts 3 are inserted at the four corners of the limit frame 2, and the bolts 3 are threadedly connected to the mounting holes 4. The limit frame 2 is installed between several support plates 5. The stability of several support plates 5 and the positioning tube 7 is improved by the limit frame 2. At the same time, the limit frame 2 can improve the stability of the fit between the steel mesh 1 and the slope protection, and avoid the steel mesh 1 from being deformed due to the weight of the sandblasting after sandblasting.

[0039] The size of the fixing frame 6 is larger than the mesh of the steel mesh 1 , and the fixing frame 6 is used to cooperate with the slope protection to squeeze the steel mesh 1 .

[0040] One end of the positioning tube 7 away from the movable rod 13 is closed, which reduces the local pressure of the end of the positioning tube 7 on the end of the drill hole and prevents the positioning tube 7 from moving when the movable rod 13 is hit with a hammer.

[0041] The length of the fixing rod 9 is less than or equal to the fixing sleeve 10 to prevent the fixing rod 9 from being too long, which makes it difficult to put the positioning tube 7 into the drilled hole of the slope protection.

[0042] With the above structure, firstly, a corresponding hole is drilled on the slope protection according to the arrangement position of the positioning cylinder 7, and the diameter of the hole needs to be able to accommodate the positioning cylinder 7 and the fixing sleeve 10 thereon;

[0043] The steel mesh 1 is laid on the slope protection of the foundation pit, and then the positioning cylinder 7 is passed through the mesh of the steel mesh 1 and inserted into the hole on the slope protection, and then the movable rod 13 is hit with a hammer to make the movable rod 13 push the top block 14, and the top block 14 is used to push the two clamping rods 11, so that the clamping rods 11 are inserted into the inner wall of the drilled hole, and then concrete is filled between the positioning cylinder 7 and the drilled hole;

[0044] The support plate 5 is slidably arranged on the positioning cylinder 7, and the support plate 5 is inserted into the mesh of the steel mesh 1. By rotating the nut 8, the nut 8 pushes the support plate 5 to make it close to the slope protection, and the steel mesh 1 is supported by the support plate 5, and the steel mesh 1 is clamped by the fixing frame 6 and the slope protection;

[0045] The limit frame 2 is installed between several support plates 5. The limit frame 2 improves the stability of several support plates 5 and the positioning tube 7. At the same time, the limit frame 2 can improve the stability of the fit between the steel mesh 1 and the slope protection. Finally, mortar is sprayed on the slope protection until the mortar covers all the limit frames 2 and the steel mesh 1.

[0046] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A sprayed anchor hanging mesh foundation pit support structure, characterized by: It comprises a steel mesh (1), wherein a plurality of positioning cylinders (7) are distributed on the steel mesh (1), and the positioning cylinders (7) pass through the meshes of the steel mesh (1); A support plate (5) is slidably arranged on the positioning cylinder (7) for supporting the mesh of the steel mesh (1); a fixing frame (6) is fixed on the surface of the support plate (5); a nut (8) is threadedly connected to the surface of the positioning cylinder (7) for pushing the support plate (5) so that the fixing frame (6) is close to the steel mesh (1); and a limiting frame (2) is installed between a plurality of the support plates (5); Two fixing sleeves (10) are symmetrically arranged on the surface of the positioning cylinder (7), and the fixing sleeves (10) are communicated with the positioning cylinder (7). A clamping rod (11) is slidably arranged in the fixing sleeve (10), and arc blocks (15) are arranged at opposite ends of the two clamping rods (11). A movable rod (13) is slidably arranged at the end of the positioning cylinder (7), and a top block (14) is fixed at the end of the movable rod (13). The top block (14) is located between the two arc blocks (15) and is used to push the two arc blocks (15) so that the two arc blocks (15) are separated.

2. According to claim 1, a sprayed anchor hanging mesh foundation pit support structure is characterized by: The movable rod (13) is rectangular, and its end passes through the end of the positioning tube (7).

3. According to claim 1, a sprayed anchor hanging mesh foundation pit support structure is characterized by: A fixing block (12) is fixed on the surface of the clamping rod (11), and the fixing block (12) passes through the fixing sleeve (10), and the fixing block (12) is made of plastic material.

4. According to claim 1, a sprayed anchor hanging mesh foundation pit support structure is characterized by: A plurality of fixing rods (9) are arranged on the surface of the positioning cylinder (7).

5. According to claim 1, a sprayed anchor hanging mesh foundation pit support structure is characterized by: The support plate (5) is provided with mounting holes (4) at the four corners, the limit frame (2) is penetrated with bolts (3) at the four corners, and the bolts (3) are threadedly connected to the mounting holes (4).

6. The sprayed anchor hanging mesh foundation pit support structure according to claim 1, characterized in that: The size of the fixing frame (6) is larger than the mesh of the steel mesh (1).

7. The sprayed anchor hanging mesh foundation pit support structure according to claim 1, characterized in that: One end of the positioning cylinder (7) away from the movable rod (13) is closed.

8. The sprayed anchor hanging mesh foundation pit support structure according to claim 4 is characterized by: The length of the fixing rod (9) is less than or equal to the fixing sleeve (10).

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