Tunnel inverted arch steel bar positioning fixture

Abstract

The application relates to a tunnel inverted arch steel bar positioning fixture, and belongs to the technical field of tunnel inverted arch construction. The tunnel inverted arch steel bar positioning fixture comprises longitudinal positioning fixtures and interlayer spacing positioning fixtures. The longitudinal positioning fixtures are provided in plurality. The longitudinal positioning fixtures are used for one-to-one correspondence with the steel bar layers. The longitudinal positioning fixtures are arranged along the length direction of the tunnel side wall. The longitudinal positioning fixtures are provided with a plurality of positioning ports. The positioning ports are used for the steel bars to pass through. The interlayer spacing positioning fixtures are arranged between the adjacent longitudinal positioning fixtures. The interlayer spacing positioning fixtures are used for adjusting the spacing of the adjacent longitudinal positioning fixtures. The application has the advantages that the steel bar layer spacing and the longitudinal spacing between the steel bars can be conveniently controlled, and the construction quality and efficiency can be guaranteed.

Description

Technical Field

[0001] This application relates to the field of tunnel invert construction technology, and in particular to a positioning clamp for tunnel invert reinforcement. Background Technology

[0002] Tunnel inverts are generally constructed with reinforced concrete. When constructing the invert near the inner wall of the tunnel, multiple rows of reinforcing bars are usually fixed first, and then concrete is poured. The construction sequence of the invert reinforcement is as follows: first, multiple outer reinforcing bars are constructed along the length of the tunnel, and then multiple inner reinforcing bars are constructed.

[0003] Currently, during the construction of reinforcing bars, it is difficult to control the spacing between layers of reinforcing bars and the longitudinal spacing between reinforcing bars, which affects the construction quality and efficiency. Utility Model Content

[0004] To facilitate the control of the spacing between steel reinforcement layers and the longitudinal spacing between steel reinforcements, and to help ensure construction quality and efficiency, this application provides a positioning clamp for the steel reinforcement of a tunnel invert arch.

[0005] The technical solution for a tunnel invert reinforcement positioning clamp provided in this application is as follows: A positioning clamp for the reinforcing steel bars of a tunnel invert, comprising: Longitudinal positioning clamps are provided in multiples, each corresponding to a layer of reinforcing bars. The longitudinal positioning clamps are arranged along the length of the tunnel sidewall and have multiple positioning openings for the reinforcing bars to pass through. A layer spacing positioning fixture is provided, which is disposed between adjacent longitudinal positioning fixtures and is used to adjust the spacing between adjacent longitudinal positioning fixtures.

[0006] Preferably, the interlayer spacing positioning fixture includes a screw, a turnbuckle nut, and a first locking nut. There are two screws, which are threaded to both ends of the turnbuckle nut. The two screws are used to move through two adjacent longitudinal positioning fixtures. The first locking nut is threaded to the screw and is used to abut against the side of the corresponding longitudinal positioning fixture near the turnbuckle nut.

[0007] Preferably, the interlayer spacing positioning fixture further includes a second locking nut, which is threaded onto the screw rod, and the first locking nut is used to abut against the side of the corresponding longitudinal positioning fixture away from the turnbuckle nut.

[0008] Preferably, the screw is misaligned with the positioning port on the corresponding longitudinal positioning fixture.

[0009] Preferably, the positioning port is located on the edge of the corresponding longitudinal positioning fixture and extends horizontally through the corresponding longitudinal positioning fixture.

[0010] Preferably, the inner wall of the positioning port is provided with an elastic rubber pad.

[0011] Preferably, the longitudinal positioning clamp is an angle steel.

[0012] Preferably, there are multiple positioning fixtures spaced apart between adjacent longitudinal positioning fixtures.

[0013] Preferably, a rotating ring is rotatably sleeved on the turnbuckle nut, and a scale is provided on the rotating ring, the length direction of the scale being parallel to the length direction of the turnbuckle nut.

[0014] Preferably, the 0 mark of the scale is located at the center of the turnbuckle nut.

[0015] In summary, this application includes the following beneficial technical effects: In use, the outer layer of positioning steel bars is constructed first, followed by the installation of longitudinal positioning clamps. The positioning steel bars are then passed through the appropriate positioning holes on the longitudinal positioning clamps. Next, the steel bars are installed sequentially according to the multiple positioning holes on the longitudinal positioning clamps. After installation, the multiple outer layer steel bars can be tied and fixed with the longitudinal steel bars, which helps to control the longitudinal spacing of multiple steel bars in each row. Then, the position of the inner layer longitudinal positioning clamps is determined by the layer spacing positioning clamps. The multiple steel bars are then passed through the positioning holes on the inner layer longitudinal positioning clamps sequentially. After the multiple inner layer steel bars are installed, they are also tied and fixed with the longitudinal steel bars. The layer spacing positioning clamps facilitate the control of the spacing between steel bar layers, thereby helping to ensure construction quality and efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application in its usage state.

[0017] Figure 2 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0018] Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of this application.

[0019] Explanation of reference numerals in the attached drawings: 1. Longitudinal positioning clamp; 2. Positioning port; 3. Layer spacing positioning clamp; 31. Screw; 32. Turnbuckle nut; 33. First locking nut; 34. Second locking nut; 4. Rotary ring; 5. Scale; 6. Through hole. Detailed Implementation

[0020] The following combination Figures 1-3 This application will be described in further detail.

[0021] This application discloses a positioning clamp for the reinforcing steel bars of a tunnel invert arch. (Refer to...) Figure 1 and Figure 2 The tunnel invert arch reinforcement positioning fixture includes longitudinal positioning fixtures 1 and interlayer spacing positioning fixtures 3. Multiple longitudinal positioning fixtures 1 are provided, each corresponding to a specific layer of reinforcement. Each longitudinal positioning fixture 1 is used to position the longitudinal spacing of multiple reinforcement bars within its layer. During construction, the reinforcement layers are arranged at intervals perpendicular to the tunnel length, with multiple reinforcement bars in each layer arranged at intervals along the tunnel length. The longitudinal positioning fixtures 1 are positioned along the tunnel length. Specifically, each longitudinal positioning fixture 1 has multiple positioning openings 2, evenly spaced along the length of the corresponding longitudinal positioning fixture 1, for the reinforcement bars to pass through. The interlayer spacing positioning fixtures 3 are positioned between adjacent longitudinal positioning fixtures 1 and are used to adjust the spacing between adjacent longitudinal positioning fixtures 1.

[0022] In use, the outer layer of positioning reinforcement is constructed first, followed by the installation of longitudinal positioning clamps 1. The positioning reinforcement is then passed through the appropriate positioning openings 2 on the longitudinal positioning clamps 1. The longitudinal positioning clamps 1 are positioned above the concrete pouring height. Next, reinforcement bars are installed sequentially according to the positioning openings 2 on the longitudinal positioning clamps 1. After installation, the multiple outer layer reinforcement bars are tied and fixed using the longitudinal reinforcement bars, thus accurately controlling the longitudinal spacing of the multiple reinforcement bars in the reinforcement layer. Then, the position of the inner layer longitudinal positioning clamps 1 is determined using layer spacing positioning clamps 3. Multiple reinforcement bars are then passed sequentially through the positioning openings 2 on the inner layer longitudinal positioning clamps 1. After the multiple inner layer reinforcement bars are installed, they are also tied and fixed using the longitudinal reinforcement bars. The layer spacing positioning clamps 3 facilitate the control of the reinforcement layer spacing, thereby helping to ensure construction quality and efficiency. The longitudinal positioning clamps 1 can be fixed using pre-embedded rods or support frames on the tunnel inner wall, etc., without limitation.

[0023] In other embodiments, multiple steel bars can be sequentially clamped into the positioning port 2 of the longitudinal positioning clamp 1 on the construction ground, and then fixed by binding with the longitudinal steel bars before being installed at the construction position.

[0024] Reference Figure 2 To save costs and improve practicality, the longitudinal positioning clamp 1 is made of angle steel, and the positioning port 2 is located on the edge of the corresponding longitudinal positioning clamp 1 and extends laterally through the corresponding longitudinal positioning clamp 1, thereby facilitating the assembly and disassembly of the longitudinal positioning clamp 1 and the reinforcing bar.

[0025] Reference Figure 2To prevent the reinforcing bar from wobbling after being inserted into the positioning opening 2 of the corresponding longitudinal positioning clamp 1, an elastic rubber pad is adhered to the inner wall of the positioning opening 2. The elastic rubber pad can be either a rubber pad or a silicone pad, and there is no limitation on this. To further improve the fixing effect between the longitudinal positioning clamp 1 and the reinforcing bar, the reinforcing bar can also be fixed to the longitudinal positioning clamp 1 by binding with cable ties.

[0026] Reference Figure 2 To facilitate adjustment of the distance between adjacent longitudinal positioning clamps 1, the interlayer spacing positioning clamp 3 includes a screw 31, a turnbuckle nut 32, and a first locking nut 33. Two screws 31 are provided, each threadedly connected to both ends of the turnbuckle nut 32, thus connecting the two screws 31 for easy disassembly and transportation. The ends of the two screws 31 furthest from the turnbuckle nut 32 are used to movably pass through adjacent longitudinal positioning clamps 1. Each longitudinal positioning clamp 1 has a through hole 6 for the screw 31 to pass through, the depth of which is perpendicular to the depth of the positioning opening 2 on the corresponding longitudinal positioning clamp 1. The screw 31 is misaligned with the positioning opening 2 on the corresponding longitudinal positioning clamp 1 to prevent interference between the screw 31 and the reinforcing bar. Specifically, multiple interlayer spacing positioning clamps 3 are provided between adjacent longitudinal positioning clamps 1, arranged at intervals along the length of the longitudinal positioning clamps 1, with each through hole 6 on the longitudinal positioning clamp 1 corresponding to one of the interlayer spacing positioning clamps 3.

[0027] Reference Figure 2 The first locking nut 33 corresponds to the screw 31 one by one. The first locking nut 33 is threadedly connected to the corresponding screw 31. The first locking nut 33 is used to abut against the side of the corresponding longitudinal positioning fixture 1 near the turnbuckle nut 32.

[0028] Reference Figure 2 Furthermore, the interlayer positioning fixture 3 also includes a second locking nut 34, which corresponds one-to-one with the screw 31. The second locking nut 34 is threaded onto the corresponding screw 31. The second locking nut 34 is located on the side of the corresponding first locking nut 33 away from the turnbuckle nut 32. The second locking nut 34 is used to abut against the side of the corresponding longitudinal positioning fixture 1 away from the turnbuckle nut 32.

[0029] When it is necessary to control the distance between adjacent longitudinal positioning clamps 1, the turnbuckle nut 32 is threaded between two screw rods 31. Then, the first locking nut 33 is threaded onto the screw rod 31, so that the distance between the first locking nuts 33 on both sides of the turnbuckle nut 32 matches the distance between the adjacent longitudinal positioning clamps 1 that are close to each other. Then, the screw rod 31 on one side is passed through the through hole 6 on the longitudinal positioning clamp 1 that has been fixed in position until the corresponding first locking nut 33 abuts against the fixed longitudinal positioning clamp 1. Then, the longitudinal positioning clamp 1 to be installed is put onto the screw rod 31 on the other side until the longitudinal positioning clamp 1 to be installed abuts against the first locking nut 33 on the corresponding side. At this time, the position of the longitudinal positioning clamp 1 to be installed is initially determined. Then, the second locking nut 34 is screwed onto the screw rod 31, so that the second locking nut 34 abuts against the side of the corresponding longitudinal positioning clamp 1 that is away from the turnbuckle nut 32. This realizes the control of the distance between adjacent longitudinal positioning clamps 1, which helps to accurately control the distance between the steel reinforcement layers, thereby ensuring construction quality and efficiency. The interlayer positioning fixture 3 uses the coordinated operation of screw 31, turnbuckle nut 32, first locking nut 33 and second locking nut 34, so that there is no need to use a long screw 31 to position the adjacent longitudinal positioning fixture 1.

[0030] The implementation principle of Embodiment 1 of this application is as follows: In use, first, the outer layer of positioning steel bars is constructed. Then, the outer layer of longitudinal positioning clamps 1 are installed and fixed, allowing the positioning steel bars to pass through the positioning openings 2 at appropriate positions on the outer layer of longitudinal positioning clamps 1. Next, steel bars are installed sequentially according to the positioning openings 2 on the outer layer of longitudinal positioning clamps 1. After installation, the multiple steel bars of the outer layer can be tied and fixed using the longitudinal steel bars, thereby helping to accurately control the longitudinal spacing of multiple steel bars in each layer of steel bars. A turnbuckle nut 32 is threaded between two screw rods 31. Then, a first locking nut 33 is threaded onto the screw rod 31, so that the distance between the first locking nuts 33 on both sides of the turnbuckle nut 32 is aligned with the preset adjacent longitudinal positioning... The spacing between the clamps 1 on their adjacent sides is matched. Then, the screw 31 on one side is passed through the through hole 6 on the fixed longitudinal positioning clamp 1 until the corresponding first locking nut 33 abuts against the fixed longitudinal positioning clamp 1. Next, the longitudinal positioning clamp 1 to be installed is put on the screw 31 on the other side until the longitudinal positioning clamp 1 to be installed abuts against the first locking nut 33 on the corresponding side. At this time, the position of the longitudinal positioning clamp 1 to be installed is initially determined. Then, the second locking nut 34 is screwed on the screw 31 so that the second locking nut 34 abuts against the side of the corresponding longitudinal positioning clamp 1 away from the turnbuckle nut 32, thereby realizing the control of the spacing between adjacent longitudinal positioning clamps 1.

[0031] Then, multiple steel bars are passed through the positioning holes 2 on the inner longitudinal positioning clamp 1 in sequence. After the multiple steel bars in the inner layer are installed, they are also fixed by binding with longitudinal steel bars, which facilitates the control of the spacing of the steel bar layers and helps to ensure construction quality and efficiency.

[0032] Example 2: Reference Figure 3 The difference between this embodiment and embodiment 1 is that a rotating ring 4 is rotatably sleeved on the turnbuckle nut 32, the rotation axis of the rotating ring 4 is parallel to the length direction of the turnbuckle nut 32, a scale 5 is fixed on the rotating ring 4, the length direction of the scale 5 is parallel to the length direction of the turnbuckle nut 32, and further, the 0 mark of the scale 5 is located at the center of the turnbuckle nut 32, and the value increases from the center to both sides.

[0033] The implementation principle of Embodiment 2 of this application is as follows: When connecting the turnbuckle nut 32, the screw 31 and the first locking nut 33, the distance from the first locking nut 33 at both ends of the turnbuckle nut 32 to the center of the turnbuckle nut 32 can be directly determined according to the scale 5, which helps to connect the first locking nut 33 to the required position of the screw 31; at the same time, the scale 5 can quickly determine whether the spacing between adjacent longitudinal positioning fixtures 1 is appropriate when the screw 31 is inserted into the longitudinal positioning fixture 1; and the rotating ring 4 can change the position of the scale 5 after the turnbuckle nut 32 is connected and fixed, so that the scale 5 is less likely to interfere with the longitudinal positioning fixtures 1 at both ends.

[0034] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A positioning clamp for the reinforcing steel bars of a tunnel invert arch, characterized in that, include: Longitudinal positioning clamp (1), multiple longitudinal positioning clamps (1) are provided, and multiple longitudinal positioning clamps (1) are used to correspond one-to-one with the number of steel reinforcement layers. The longitudinal positioning clamps (1) are set along the length direction of the tunnel sidewall. The longitudinal positioning clamps (1) have multiple positioning holes (2), and the positioning holes (2) are used for steel reinforcement to pass through. A layer spacing positioning fixture (3) is provided between adjacent longitudinal positioning fixtures (1) and is used to adjust the spacing between adjacent longitudinal positioning fixtures (1).

2. The tunnel invert reinforcement positioning clamp according to claim 1, characterized in that: The interlayer positioning fixture (3) includes a screw (31), a turnbuckle nut (32), and a first locking nut (33). There are two screws (31), which are threaded to both ends of the turnbuckle nut (32). The two screws (31) are used to move through two adjacent longitudinal positioning fixtures (1). The first locking nut (33) is threaded to the screw (31) and is used to abut against the side of the corresponding longitudinal positioning fixture (1) near the turnbuckle nut (32).

3. A positioning clamp for tunnel invert reinforcement according to claim 2, characterized in that: The interlayer positioning fixture (3) further includes a second locking nut (34), which is threaded onto the screw (31), and the first locking nut (33) is used to abut against the side of the corresponding longitudinal positioning fixture (1) away from the turnbuckle nut (32).

4. A positioning clamp for tunnel invert reinforcement according to claim 2, characterized in that: The screw (31) is misaligned with the positioning port (2) on the corresponding longitudinal positioning fixture (1).

5. A positioning clamp for tunnel invert reinforcement according to claim 1, characterized in that: The positioning port (2) is located on the edge of the corresponding longitudinal positioning fixture (1) and extends horizontally through the corresponding longitudinal positioning fixture (1).

6. A positioning clamp for tunnel invert reinforcement according to claim 5, characterized in that: An elastic rubber pad is provided on the inner wall of the positioning port (2).

7. A positioning clamp for tunnel invert reinforcement according to claim 1, characterized in that: The longitudinal positioning clamp (1) is an angle steel.

8. A positioning clamp for tunnel invert reinforcement according to any one of claims 1-7, characterized in that: Multiple layer-space positioning fixtures (3) are arranged at intervals between adjacent longitudinal positioning fixtures (1).

9. A positioning clamp for the reinforcing steel bars of a tunnel invert as described in claim 2, characterized in that: A rotating ring (4) is rotatably sleeved on the turnbuckle nut (32), and a scale (5) is provided on the rotating ring (4). The length direction of the scale (5) is parallel to the length direction of the turnbuckle nut (32).

10. A positioning clamp for the reinforcing steel bars of a tunnel invert as described in claim 9, characterized in that: The 0 mark of the scale (5) is located at the center of the turnbuckle nut (32).

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