Control device for tunnel lining steel bar spacing and protective layer thickness
The precise control of the thickness and spacing of the tunnel lining reinforcement protective layer is achieved through the formwork connection assembly and the steel bar distance regulator, which solves the problem of poor control accuracy in the prior art and improves construction efficiency and safety.
Patent Information
- Application Number
- CN202422474860.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-10-14
AI Technical Summary
In the existing tunnel lining construction, the thickness and spacing of the steel bar protective layer are difficult to accurately control, resulting in low construction efficiency and safety hazards.
The control device including a formwork connection assembly, a steel bar protective layer control device, a steel bar longitudinal spacing control device and a steel bar spacing adjuster is adopted to accurately control the thickness and spacing of the steel bar protective layer by rotating the connecting plate and the adjustment screw.
The construction quality and efficiency of reinforced concrete are improved, construction costs are reduced, safety hazards are reduced, and the device can be reused.
Smart Images
Figure CN223282079U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a control device for steel bar spacing and protective layer thickness, which is a device used for controlling steel bar spacing and protective layer thickness in tunnel lining construction and belongs to the technical field of tunnel construction. Background Art
[0002] Tunnel lining reinforced concrete is an irreplaceable and important component of the secondary lining of the existing tunnel engineering IV, V, and VI rock mass sections. The quality of reinforced concrete directly affects the safety and service life of the structure. In particular, whether the thickness of the steel bar protective layer and the spacing between the steel bars meet the requirements are important factors affecting the quality of reinforced concrete. Therefore, during the construction of tunnel lining reinforced concrete structures, it is necessary to strictly control not only the thickness of the steel bar protective layer, but also the longitudinal spacing of the steel bars and the spacing between the steel bar layers. In the existing technology, the steel bar protective layer is generally controlled by manually installing concrete pads between the outer wall of the steel bar and the formwork or adjusting the position of the concrete pads; the longitudinal spacing of the steel bars during the steel bar installation process is controlled by marking on the horizontally distributed steel bars; and the spacing between the steel bar layers is generally controlled by setting steel bar supports or welding positioning steel bars between layers. During the construction process, it is difficult to control the position adjustment of the concrete pads, the marking and installation accuracy of the steel bar positions, and the safety of steel bar welding. As a result, the entire construction process is manually controlled, with low construction efficiency, poor control accuracy, and major safety hazards. Utility Model Content
[0003] In response to the above-mentioned defects in the prior art, the utility model provides a control device for the spacing of tunnel lining steel bars and the thickness of the protective layer, which can improve the efficiency of tunnel lining steel bar installation and effectively control the steel bar installation spacing and the thickness of the protective layer.
[0004] The utility model is realized through the following technical scheme: a control device for the spacing and protective layer thickness of tunnel lining steel bars, characterized in that it includes a template connection component, a steel bar protective layer control device, a steel bar longitudinal spacing control device, and a steel bar layer spacing regulator. The template connection component includes a vertical connecting plate, a steering connecting plate, a steering pin, and a steering baffle. The vertical connecting plate is fixedly connected to the template, and one end of the steering connecting plate is rotatably connected to the vertical connecting plate through the steering pin. The steering baffle is horizontally arranged at the lower part of the steering connecting plate and fixedly connected to the side of the vertical connecting plate. The steel bar protective layer control device is a first square steel with a width consistent with the thickness of the steel bar protective layer. The first square steel is connected to the template. The other end of the steering connecting plate is fixedly connected; the steel bar longitudinal spacing control device includes a plurality of steel bar fixing grooves fixedly arranged on the sides of the first square steel and the second square steel, the second square steel is arranged parallel to the first square steel, and the spacing between the steel bar fixing grooves on the first square steel and the second square steel is consistent with the longitudinal spacing of the steel bars; the steel bar layer spacing adjuster is arranged between the first square steel and the second square steel, and the steel bar layer spacing adjuster includes an adjusting sleeve, both ends of the adjusting sleeve are threadedly connected to a telescopic screw, the outer ends of the two telescopic screws are fixedly connected to a fixed channel steel, a rotating nut is fixed to the outside of the adjusting sleeve, and a rotating rod is arranged in the rotating nut, and the open ends of the two fixed channel steels are respectively clamped with the first square steel and the second square steel.
[0005] In this utility model, the formwork connection assembly is fixedly connected to the formwork, and the steering connecting plate can rotate about the steering pin. The steering baffle can control the rotational position of the steering connecting plate. The first square steel is used to control the thickness of the steel reinforcement protective layer. The steel reinforcement fixing slots provided on the sides of the first and second square steels are used to control the longitudinal spacing of the steel reinforcements. During use, the structural steel reinforcement can be clamped into the steel reinforcement fixing slots and tied to the steel reinforcement fixing slots. The steel reinforcement layer spacing adjuster is used to control the steel reinforcement layer spacing. During use, the steel reinforcement layer spacing is adjusted by rotating the rod. The utility model can be removed after the lining concrete has finally set.
[0006] Furthermore, the vertical connecting plate, the steering connecting plate and the steering baffle are all made of steel plates with a thickness of not less than 1 cm; the specifications of the first square steel and the second square steel are consistent.
[0007] Furthermore, the steel bar fixing slot is formed by cutting a steel pipe with an inner diameter not less than the diameter of the steel bar longitudinally along the diameter, and its length is consistent with the width of the first square steel and the second square steel.
[0008] Furthermore, the first square steel and the second square steel are set at one time or in sections according to the length of the template; they are set corresponding to the template connection components and the steel bar layer spacing adjusters, and several groups of template connection components and steel bar layer spacing adjusters are arranged at intervals along the length direction of the template, and the spacing N is not greater than 2m.
[0009] Furthermore, the adjusting sleeve is made of a steel pipe, an adjusting nut is fixed to each end of the steel pipe, and the telescopic screw is threadedly connected to the adjusting nut.
[0010] The beneficial effects of the present invention are as follows: the thickness of the steel bar protective layer and the steel bar spacing can be effectively controlled by the present invention with high control accuracy, which reduces the factors affecting the quality of reinforced concrete and can greatly improve the construction quality; and the use of the present invention in tunnel lining construction can improve the efficiency of tunnel lining steel bar installation and speed up the construction progress; the present invention is easy and quick to install and disassemble, which can speed up the template installation progress and improve the construction efficiency; and the present invention is reusable and can reduce the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic elevation view of the utility model;
[0012] Figure 2 It is a planar schematic diagram of the utility model;
[0013] Figure 3 yes Figure 2 An enlarged schematic diagram of part A in FIG;
[0014] Figure 4 It is a structural diagram of the steel bar layer distance regulator in the utility model;
[0015] In the figure, 1. vertical connecting plate, 2. steering connecting plate, 3. steering pin, 4. steering baffle, 5. first square steel, 6. steel bar layer distance adjuster, 6-1. fixed channel steel, 6-2. telescopic screw, 6-3. adjusting sleeve, 6-4. adjusting nut, 6-5. rotating nut, 7. rotating rod, 8. structural steel bar, 9. formwork, 10. concrete, 11. second square steel, 12. steel bar fixing slot, N, longitudinal spacing. DETAILED DESCRIPTION
[0016] The present invention will be further described below by way of non-limiting embodiments and in conjunction with the accompanying drawings:
[0017] As shown in the accompanying drawings, a control device for the spacing and protective layer thickness of tunnel lining steel bars includes a template connection component, a steel bar protective layer control device, a steel bar longitudinal spacing control device, and a steel bar layer spacing adjuster 6.
[0018] The template connection assembly includes a vertical connecting plate 1, a steering connecting plate 2, a steering latch 3, and a steering baffle 4. The vertical connecting plate 1 is welded to the template 9. One end of the steering connecting plate 2 is pivotally connected to the vertical connecting plate 1 via the steering latch 3. Both the steering connecting plate 2 and the vertical connecting plate 1 have latch holes of the same diameter at their ends. The steering baffle 4 is horizontally welded to the side of the vertical connecting plate 1 and located at the lower edge of the steering connecting plate 2. During use, the steering baffle 4 controls the rotational position of the steering connecting plate 2. The vertical connecting plate 1, the steering connecting plate 2, and the steering baffle 4 are all made of steel plates with a thickness of at least 1 cm.
[0019] The steel bar protective layer control device is a first square steel 5 whose width is consistent with the thickness of the steel bar protective layer. The first square steel 5 is welded to the other end of the steering connecting plate 2.
[0020] The steel bar longitudinal spacing control device includes a plurality of steel bar fixing slots 12 fixedly arranged on the sides of the first square steel 5 and the second square steel 11. The second square steel 11 is arranged parallel to the first square steel 5, and the specifications of the first square steel 5 and the second square steel 11 are consistent. The spacing between the steel bar fixing slots 12 on the first square steel 5 and the spacing between the steel bar fixing slots 12 on the second square steel 11 are consistent with the designed steel bar longitudinal spacing. In this embodiment, the steel bar fixing slots 12 are made of a steel pipe with an inner diameter not less than the diameter of the steel bar, cut longitudinally along the diameter, and its length is consistent with the width of the first square steel 5 and the second square steel 11. The steel bar fixing slots 12 are welded to the sides of the first square steel 5 and the second square steel 11. When in use, the structural steel bar 8 can be stuck in the steel bar fixing slots 12, and the structural steel bar 8 is tied to the steel bar fixing slots 12, so as to effectively control the longitudinal spacing of the steel bars.
[0021] The steel bar layer spacing adjuster 6 is arranged between the first square steel 5 and the second square steel 11. The steel bar layer spacing adjuster 6 includes an adjusting sleeve 6-3, and both ends of the adjusting sleeve 6-3 are threadedly connected to a telescopic screw 6-2, and the outer ends of the two telescopic screws 6-2 are welded to a fixed channel steel 6-1. A rotating nut 6-5 is welded to the middle part of the outer portion of the adjusting sleeve 6-3, and a rotating rod 7 is arranged inside the rotating nut 6-5. The open ends of the two fixed channel steels 6-1 are respectively engaged with the first square steel 5 and the second square steel 11. In this embodiment, the adjusting sleeve 6-3 is made of a steel pipe, and an adjusting nut 6-4 is fixed to each end of the steel pipe, and the two telescopic screws 6-2 are respectively threadedly connected to the corresponding adjusting nuts 6-4. When in use, the rotating rod 7 is inserted into the rotating nut 6-5, and the steel bar layer spacing is adjusted by the rotating rod 7. During installation, the fixed channel steel 6-1 should be tightly engaged with the first square steel 5 and the second square steel 11.
[0022] In the present invention, the first square steel 5 and the second square steel 11 can be set at one time or in sections according to the length of the template 9; they are set corresponding to the template connection components and the steel bar layer spacing adjusters 6, and several groups of template connection components and steel bar layer spacing adjusters 6 can be set at intervals along the length direction of the template 9, and the longitudinal spacing N should not be greater than 2m.
[0023] When the utility model is used, the template connection component can be assembled in advance, the steel bar fixing groove 12 can be welded on the first square steel 5 and the second square steel 11, the first square steel 5 and the template connection component can be connected together, and then the template connection component can be fixed to the template 9. After the template connection component is rotated, it is assembled with the steel bar layer distance adjuster 6 and the second square steel 11 in sequence, and can be dismantled in reverse after the lining concrete is finally set.
[0024] In the present invention, the thickness of the steel bar protective layer can be controlled by the first square steel 5, the longitudinal spacing of the steel bars can be controlled by the steel bar fixing slots 12 provided on the sides of the first square steel 5 and the second square steel 11, and the steel bar layer spacing can be controlled by the steel bar layer spacing adjuster 6. The present invention has a simple structure and can effectively control the installation spacing of the steel bars and the thickness of the protective layer with high control accuracy, thereby improving the quality of reinforced concrete construction. Moreover, the use of the present invention in construction can improve construction efficiency and accelerate construction progress.
[0025] The other parts of this embodiment are all existing technologies and will not be described in detail here.
Claims
1. A control device for the spacing of steel bars and the thickness of protective layer in tunnel lining, characterized by: The invention comprises a template connection component, a steel bar protective layer control device, a steel bar longitudinal spacing control device, and a steel bar layer spacing regulator. The template connection component comprises a vertical connection plate (1), a steering connection plate (2), a steering latch (3), and a steering baffle (4). The vertical connection plate (1) is fixedly connected to the template (9). One end of the steering connection plate (2) is rotatably connected to the vertical connection plate (1) through the steering latch (3). The steering baffle (4) is horizontally arranged at the lower part of the steering connection plate (2) and fixedly connected to the side of the vertical connection plate (1). The steel bar protective layer control device is a first square steel (5) whose width is consistent with the thickness of the steel bar protective layer. The first square steel (5) is fixedly connected to the other end of the steering connection plate (2). The steel bar longitudinal spacing control device comprises a first square steel (5) fixedly arranged on the side of the first square steel (5) and the second square steel (11). The invention relates to a plurality of steel bar fixing slots (12) on the surface of the second square steel (11), the second square steel (11) is arranged in parallel with the first square steel (5), and the spacing between the steel bar fixing slots (12) on the first square steel (5) and the second square steel (11) is consistent with the longitudinal spacing of the steel bars; the steel bar layer distance adjuster (6) is arranged between the first square steel (5) and the second square steel (11), and the steel bar layer distance adjuster (6) comprises an adjusting sleeve (6-3), both ends of the adjusting sleeve (6-3) are threadedly connected to a telescopic screw rod (6-2), the outer ends of the two telescopic screw rods (6-2) are fixedly connected to a fixed channel steel (6-1), a rotating nut (6-5) is fixed to the outside of the adjusting sleeve (6-3), a rotating rod (7) is arranged in the rotating nut (6-5), and the open ends of the two fixed channel steels (6-1) are respectively clamped with the first square steel (5) and the second square steel (11).
2. The device for controlling the spacing between steel bars and the thickness of protective layer in tunnel lining according to claim 1, characterized in that: The vertical connecting plate (1), the steering connecting plate (2) and the steering baffle (4) are all made of steel plates with a thickness of not less than 1 cm; the specifications of the first square steel (5) and the second square steel (11) are consistent.
3. The device for controlling the spacing of steel bars and the thickness of protective layer in tunnel lining according to claim 2, characterized in that: The steel bar fixing slot (12) is formed by cutting a steel pipe with an inner diameter not less than the diameter of the steel bar along the diameter longitudinal direction, and its length is consistent with the width of the first square steel (5) and the second square steel (11).
4. The device for controlling the spacing of steel bars and the thickness of protective layer in tunnel lining according to claim 1, 2 or 3, wherein: The first square steel (5) and the second square steel (11) are arranged at once or in sections according to the length of the template (9); and are arranged correspondingly to the template connection components and the steel bar layer distance adjusters (6). Several groups of template connection components and steel bar layer distance adjusters (6) are arranged at intervals along the length direction of the template (9), and the spacing N is not greater than 2m.
5. The device for controlling the spacing of steel bars and the thickness of protective layer in tunnel lining according to claim 4, characterized in that: The adjusting sleeve (6-3) is made of a steel pipe. An adjusting nut (6-4) is fixed to each of the two ends of the steel pipe. The telescopic screw (6-2) is threadedly connected to the adjusting nut (6-4).