Tunnel central drainage channel forming steel formwork reinforcing device

Abstract

The utility model discloses a tunnel central drainage channel forming steel formwork reinforcing device which comprises a steel formwork body, the formwork body comprises a bottom plate and side plates arranged at the two side ends of the bottom plate, and the lower ends of the two side plates are hinged to the bottom plate in an overturning mode through a plurality of hinges which are evenly arranged at intervals; a plurality of pairs of angle steel connecting pieces are evenly and symmetrically arranged on the inner sides of the two side plates at intervals, one end of each angle steel connecting piece is parallel to the corresponding side plate and fixedly connected with the side plate, and a plurality of adjustable supporting structures are arranged between the other ends of every two opposite angle steel connecting pieces in the vertical direction. The steel formwork structure and the adjustable supporting assemblies are adopted, the structure is simple, stability is good, huge pressure in the concrete pouring process can be borne, and formwork deformation is effectively prevented. And the adjustable turnover structure of the template main body can meet the construction requirements of central drainage ditches with different angles.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, and in particular to a steel formwork reinforcement device for forming a central drainage channel in a tunnel. Background Technology

[0002] With the development of society and economy, central drainage ditches play a crucial role in tunnel construction, ensuring the drainage of water within the tunnel, maintaining tunnel structural stability, and guaranteeing traffic safety. Traditionally, wooden formwork is frequently used in the construction of central drainage ditches. However, wooden formwork has several drawbacks: it is susceptible to moisture and deformation, has a limited number of reuses, and is inconvenient to install and dismantle. Furthermore, it is difficult to form trapezoidal drainage ditches at the invert arch of the central drainage ditch, and existing wooden formwork structures cannot meet the complex shape requirements of the central drainage ditch, easily leading to uneven concrete surfaces and large dimensional deviations after pouring. This affects the drainage performance and service life of the central drainage ditch, increasing construction costs and compromising construction quality. Therefore, it is necessary to develop a steel formwork reinforcement device for forming central drainage channels in tunnels. Utility Model Content

[0003] The purpose of this utility model is to provide a steel template reinforcement device for forming a central drainage channel in a tunnel, thereby solving the technical problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model discloses a steel template reinforcement device for a central drainage channel in a tunnel, comprising a steel template body, the template body including a base plate and side plates disposed on both sides of the base plate, the lower ends of the two side plates being hinged to the base plate by a plurality of evenly spaced hinges; a plurality of pairs of angle steel connectors are symmetrically arranged evenly spaced on the inner sides of the two side plates, one end of each angle steel connector being parallel to and fixedly connected to the corresponding side plate, and a plurality of adjustable support structures being arranged between the other ends of each pair of opposite angle steel connectors along the vertical direction.

[0006] Furthermore, a release agent is sprayed onto the two side plates and the side of the bottom plate that is in contact with the concrete.

[0007] Furthermore, multiple lifting rings are fixedly installed at evenly spaced intervals at the top of the two side plates.

[0008] Furthermore, each of the adjustable support components includes a sleeve, the inner circumferential wall of which is provided with an internal thread and two screws are symmetrically arranged at both ends of the sleeve and threadedly connected thereto. The ends of the two screws away from the sleeve are respectively fixedly connected to two symmetrical angle steel connectors.

[0009] Furthermore, each of the two screws has a connecting lug fixedly provided at the end away from the sleeve, and the connecting lug is fixedly connected to the corresponding angle steel connector.

[0010] Furthermore, each of the angle steel connectors has a plurality of first through holes, and each of the connecting ears has a second through hole. The connecting ears are fixedly connected to the corresponding angle steel connectors by connecting bolts that pass through the first through holes and the second through holes.

[0011] Furthermore, each screw has two rotating handles symmetrically fixed near the connecting lug.

[0012] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0013] This invention utilizes a steel template structure and adjustable support components, resulting in a simple structure with good stability. It can withstand the immense pressure during concrete pouring, effectively preventing template deformation. Furthermore, the adjustable flip-up structure of the template body can accommodate the construction requirements of central drainage ditches at different angles, ensuring the dimensional accuracy and shape precision of the central drainage ditches and improving the quality of concrete forming. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the template body structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the adjustable support component structure of this utility model;

[0018] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Side plate; 3. Angle steel connector; 4. Sleeve; 5. Screw; 6. Connecting lug; 7. First through hole; 8. Second through hole; 9. Connecting bolt; 10. Rotating handle; 11. Lifting ring; 12. Hinge. Detailed Implementation

[0019] like Figures 1-3As shown, a steel formwork reinforcement device for a central drainage ditch in a tunnel includes a steel formwork body. The formwork body includes a base plate 1 and side plates 2 located at both ends of the base plate. The lower ends of the two side plates 2 are hinged to the base plate 1 via multiple evenly spaced hinges 12. By flipping the two side plates 2 to the base plate 1, the entire formwork body can form a groove-shaped structure that conforms to the shape of the central drainage ditch in the tunnel. Furthermore, by adjusting the flipping angle of the side plates 2, it can adapt to the construction requirements of drainage ditches with different angles.

[0020] Multiple pairs of angle steel connectors 3 are symmetrically arranged at even intervals on the inner sides of the two side plates 2. One end of each angle steel connector 3 is arranged parallel to the corresponding side plate 2 and is fixedly connected to the side plate 2 by welding. Multiple adjustable support structures are arranged between the other ends of the two opposite angle steel connectors 3 in the vertical direction. The adjustable support structures are fixedly connected to the corresponding angle steel connectors 3 to achieve effective fixation of the two side plates after the angle is adjusted.

[0021] Each adjustable support assembly includes a sleeve 4. The inner circumferential wall of the sleeve 4 has an internal thread, and two threaded rods 5 are symmetrically installed at both ends of the sleeve 4. The ends of the two threaded rods 5 furthest from the sleeve 4 are respectively fixedly connected to two symmetrical angle steel connectors 3. Depending on the spacing between the corresponding angle steel connectors after the two side plates are completed, the threaded rods at both ends of the sleeve of each adjustable support assembly can be screwed in or out, thereby ensuring that the ends of the two threaded rods furthest from the sleeve meet the connection requirements with the two opposite angle steel connectors. This allows for the adaptation of fixing requirements for the two side plates at different flip angles.

[0022] In this embodiment, each of the two screws 5 has a connecting lug 6 fixedly provided at its end away from the sleeve 4. The connecting lug 6 is fixedly connected to the corresponding angle steel connector 3. Specifically, each angle steel connector 3 has multiple first through holes 7, and each connecting lug 6 has a second through hole 8. The connecting lug 6 is detachably fixedly connected to the corresponding angle steel connector 3 by a connecting bolt 9 that passes through the first through hole 7 and the second through hole 8.

[0023] Each screw 5 has two rotating handles 10 symmetrically fixed near the connecting lug 6. The two rotating handles 10 are arranged along the radial direction of the screw 5, and the screw can be rotated easily by rotating the handles.

[0024] Before construction, the two side plates 2 and the side of the bottom plate 1 that contact the concrete are treated with rust prevention, and then a layer of release agent is sprayed on them. A water-based release agent is used to ensure good demolding effect of the formwork and no adverse impact on the concrete quality. After the release agent dries, a layer of polyethylene plastic film is pasted on the surface of the formwork. The plastic film has a smooth surface, which further reduces the friction between the concrete and the formwork, making the concrete surface smoother after demolding. This reduces the need for subsequent repairs to the concrete surface and improves construction efficiency and project quality. In addition, multiple lifting rings 11 are evenly spaced and fixed at the top of the two side plates 2 to facilitate demolding after pouring.

[0025] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A tunnel central drain channel forming steel formwork reinforcement device, characterized by: The template body includes a bottom plate and side plates arranged at both ends of the bottom plate, the lower ends of the two side plates are reversibly connected to the bottom plate through a plurality of evenly spaced hinges, a plurality of pairs of angle steel connectors are symmetrically arranged on the inner sides of the two side plates, one end of each angle steel connector is parallel to and fixedly connected with the corresponding side plate, and a plurality of adjustable support assemblies are arranged between the other ends of the two opposite angle steel connectors in the up-down direction.

2. The tunnel center drain form tieback reinforcement device of claim 1, wherein: The side of the two side plates and the bottom plate in contact with the concrete is sprayed with a release agent.

3. The tunnel center drain form tieback reinforcement device of claim 1, wherein: A plurality of lifting rings are fixedly arranged at the top ends of the two side plates.

4. The tunnel center drain form tieback reinforcement of claim 1, wherein: Each adjustable support assembly includes a sleeve, an inner thread is formed on the inner circumferential wall of the sleeve, and two screw rods are symmetrically arranged at both ends of the sleeve and threadedly connected with the sleeve, the ends of the two screw rods away from the sleeve are fixedly connected with the two opposite angle steel connectors, respectively.

5. The tunnel center drain form tieback reinforcement of claim 4, wherein: The ends of the two screw rods away from the sleeve are fixedly provided with connecting ears, and the connecting ears are fixedly connected with the corresponding angle steel connectors.

6. The tunnel central drain form tieback reinforcement of claim 5, wherein: A plurality of first through holes are formed in each angle steel connector, and a second through hole is formed in each connecting ear, and the connecting ear is fixedly connected with the corresponding angle steel connector through a connecting bolt penetrating the first through hole and the second through hole.

7. The tunnel center drain form tieback reinforcement of claim 5, wherein: Two rotating handles are symmetrically fixedly arranged on each screw rod close to the connecting ear.

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