Drainage ditch pouring formwork structure of railway tunnel

Abstract

The utility model discloses a railway tunnel drainage ditch pouring formwork structure which comprises a tunnel and a tunnel foundation in the tunnel, a steel rail is arranged on the tunnel foundation, drainage ditch formworks are symmetrically arranged on the two sides of the tunnel foundation, each drainage ditch formwork comprises a support body and a formwork box, one end of each support body is fixed to the lower portion of the steel rail, and the other end of each support body is fixed to the formwork box. One end of the steel pipe is connected with the formwork box, the other end of the steel pipe is connected with the formwork box, concrete is poured around the outside of the formwork box, a drainage ditch is formed after the formwork box is dismantled, and the section of the formwork box is inverted trapezoidal; the drainage ditch pouring formwork structure of the railway tunnel can be supported and lifted through a single steel rail during use, is not limited by scenes during construction, is stable in overall structure during construction, facilitates adjustment of the depth of a drainage ditch, and meets the construction requirements of the drainage ditch of the railway tunnel.

Description

Technical Field

[0001] The utility model relates to the technical field of drainage ditch construction, in particular to a pouring formwork structure for a drainage ditch of a railway tunnel. Background Art

[0002] A railway tunnel is a building constructed in a mountain or underground for trains to pass through; the construction of a railway tunnel directly shortens the distance between two places, reduces the travel and commuting time of people, and greatly speeds up the pace of railway construction.

[0003] Rail tracks are arranged in the tunnel foundation, and trains run along the rail tracks. The drainage ditch is also an important part of the tunnel; therefore, drainage ditches are built on both sides of the rail tracks to solve the drainage problem of the tunnel.

[0004] However, in the current construction process of the tunnel drainage ditch, the existing drainage ditch formwork structure cannot adapt to the tunnel scenario. The traditional formwork structure generally needs to obtain support or fixation between two rail tracks during construction, and cannot support the construction of a single rail track. Its scenario adaptability is poor, and the accuracy of the drainage ditch cannot be guaranteed. In addition, the depth of the drainage ditch cannot be adjusted according to requirements, and the use effect is not ideal. Content of the Utility Model

[0005] The purpose of the utility model is to solve the above problems and provide a pouring formwork structure for a drainage ditch of a railway tunnel that can be supported and lifted by a single rail track, is not restricted by the scenario during construction, has a stable overall structure during construction, and is convenient to adjust the depth of the drainage ditch.

[0006] To achieve the above purpose, the technical solution of the utility model is: a pouring formwork structure for a drainage ditch of a railway tunnel, including a tunnel and a tunnel foundation in the tunnel. Rail tracks are arranged on the tunnel foundation. Drainage ditch formworks are symmetrically arranged on both sides of the tunnel foundation. The drainage ditch formwork includes a support main body and a formwork box. One end of the support main body is fixed below the rail track, and the other end is connected to the formwork box. Concrete is poured around the outside of the formwork box. After the formwork box is removed, a drainage ditch is formed.

[0007] Preferably, the cross-section of the formwork box is an inverted trapezoid.

[0008] Preferably, the drainage ditch formwork further includes a height-adjusting screw and a square pipe arranged above the formwork box. The height-adjusting screw passes through the square pipe and is fixed on the surface of the formwork box. The square pipe is fixed at the end of the support main body, and the support main body lifts the square pipe and the formwork box.

[0009] Preferably, a height-adjusting nut matching with the height-adjusting screw is arranged on the surface of the square pipe. When the height-adjusting nut rotates, it drives the height-adjusting screw and the formwork box to lift and lower integrally.

[0010] Preferably, a detachable Z-shaped limit buckle plate is provided on the surface of the support main body. One end of the limit buckle plate is fixed on the support main body, and the other end presses on the surface of the square pipe. Limit blocks are provided on the opposite sides of the limit buckle plate, and the square pipe is always located between the limit buckle plate and the limit blocks.

[0011] Preferably, two positioning screws are further provided on the support main body. The two positioning screws are arranged on both sides of the square pipe, and the ends of the positioning screws abut against the surface of the formwork box.

[0012] Preferably, adjacent formwork boxes are connected by connecting plates, and the ports of the formwork boxes are sealed by connecting plates.

[0013] Preferably, two symmetric locking pressure plates are provided at one end of the support main body away from the formwork box. Locking pressure notches are provided on the opposite sides of the two locking pressure plates, and the rail is fixed by the locking pressure plates and the locking pressure notches on both sides.

[0014] Preferably, the locking pressure plate is fixedly connected to the support main body by fixing bolts.

[0015] Preferably, steel bars and hooked bars are provided in the tunnel foundation. The steel bars are laid along the length of the tunnel, and the hooked bars are connected to the steel bars in the vertical direction.

[0016] A pouring formwork structure for a drainage ditch of a railway tunnel disclosed by the present utility model includes a tunnel and a tunnel foundation in the tunnel. A rail is provided on the tunnel foundation. Drainage ditch formworks are symmetrically provided on both sides of the tunnel foundation. The drainage ditch formwork includes a support main body and a formwork box. One end of the support main body is fixed under the rail, and the other end is connected to the formwork box. Concrete is poured around the outside of the formwork box. After the formwork box is removed, a drainage ditch is formed. The cross-section of the formwork box is trapezoidal inverted; compared with the prior art, when the pouring formwork structure for the drainage ditch of the railway tunnel is used, it has the beneficial effects that it can be supported and lifted by a single rail, is not restricted by the scene during construction, and the overall structure is stable during construction, and the depth of the drainage ditch is convenient to adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall internal structure of the railway tunnel of the present utility model.

[0018] Figure 2 It is a schematic diagram of the pouring formwork structure for the drainage ditch of the railway tunnel of the present utility model Figure 1 。

[0019] Figure 3 It is a schematic diagram of the pouring formwork structure for the drainage ditch of the railway tunnel of the present utility model Figure 2 。

[0020] Figure 4This is a schematic cross-sectional view of the formwork structure for pouring the drainage ditch of the railway tunnel of the present utility model.

[0021] Figure 5 For the present utility model Figure 1 An enlarged structural schematic diagram of the position A in it.

[0022] In the figure: 1, tunnel; 2, tunnel foundation; 21, steel bars; 22, hook bars; 3, steel rails; 4, concrete; 5, drainage ditch formwork; 51, main body of the support; 511, locking pressure plate; 512, fixing bolts; 52, formwork box; 53, connecting plate; 54, square pipe; 541, limiting block; 55, height-adjusting stud; 56, height-adjusting nut; 57, limiting buckle plate; 58, positioning screw rod. Specific embodiments

[0023] Now, the present utility model will be further described in detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, which only illustrate the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0024] Please refer to Figures 1-5 , a formwork structure for pouring the drainage ditch of a railway tunnel, including a tunnel 1 and a tunnel foundation 2 inside the tunnel 1. A steel rail 3 is provided on the tunnel foundation 2, and drainage ditch formworks 5 are symmetrically arranged on both sides of the tunnel foundation 2. The drainage ditch formwork 5 includes a main body of the support 51 and a formwork box 52. One end of the main body of the support 51 is fixed below the steel rail 3, and the other end is connected to the formwork box 52. Concrete is poured around the outside of the formwork box 52, and a drainage ditch is formed after the formwork box 52 is removed; after the formwork is erected, concrete can be directly poured around the formwork box, and the formwork is removed after the concrete solidifies to form a drainage ditch, and the overall construction is convenient and efficient.

[0025] In this embodiment, the cross-section of the formwork box 52 is trapezoidal in reverse, and it can also be rectangular or other shapes.

[0026] Specifically, the drainage ditch formwork 5 further includes a height-adjusting stud 55 and a square pipe 54 arranged above the formwork box 52. The height-adjusting stud 55 passes through the square pipe 54 and is fixed on the surface of the formwork box 52. The height-adjusting stud 55 is inserted and pulled out from the square pipe 54. The square pipe 54 is fixed at the end of the main body of the support 51, and the main body of the support 51 lifts the square pipe 54 and the formwork box 52.

[0027] Since one end of the support body 51 is fixed under the rail 3 and the other end is fixedly connected to the square pipe 54, the end of the support body 51 can lift the formwork box 52 through the square pipe 54 without simultaneously supporting both ends of the formwork structure, with strong scene adaptability. After the formwork box 52 is lifted, the bottom is suspended around, and concrete can be poured around to meet the construction requirements of the drainage ditch. On the other hand, after the formwork box 52 is lifted, a large amount of space is reserved for construction, facilitating the entry of instruments and further improving the construction efficiency.

[0028] To facilitate the adjustment of the depth of the drainage ditch, a height-adjusting nut 56 that cooperates with the height-adjusting screw 55 is provided on the surface of the square pipe 54. When the height-adjusting nut 56 rotates, it drives the height-adjusting screw 55 and the formwork box 52 to lift and lower integrally. Since the height-adjusting nut 56 is provided on the square pipe 54, when the height-adjusting nut 56 rotates, the height-adjusting screw 55 rises, simultaneously driving the formwork box below to rise, and at this time the depth of the drainage ditch decreases; when the height-adjusting nut 56 rotates in the opposite direction, the height-adjusting screw 55 descends, driving the formwork box below to descend, and at this time the depth of the drainage ditch increases. Such adjustment can increase the applicable range and meet the construction requirements of drainage ditches with different depths.

[0029] As a preferred solution, a detachable Z-shaped limit buckle plate 57 is provided on the surface of the support body 51. One end of the limit buckle plate 57 is fixed on the support body 51, and the other end presses on the surface of the square pipe 54. A limit block 541 is provided on the opposite side of the limit buckle plate 57, and the square pipe 54 is always located between the limit buckle plate 57 and the limit block 541. During the lifting and construction process, it is possible to prevent the square pipe 54 from moving in position, which is beneficial to improving the construction accuracy of the drainage ditch. Since the limit buckle plate is detachable, it is also conducive to the disassembly and assembly of the overall formwork structure.

[0030] To further keep the formwork box 52 stable, two positioning screws 58 are also provided on the support body 51. The two positioning screws 58 are arranged on both sides of the square pipe 54. During the concrete pouring, the ends of the positioning screws 58 always abut against the surface of the formwork box 52 to prevent the formwork box 52 from swinging slightly during pouring and increase the stability.

[0031] As a preferred solution, adjacent formwork boxes 52 are connected by a connecting plate 53 to increase the overall length. The ports of the formwork boxes 52 are sealed by the connecting plate 53 to prevent concrete from entering the cavity of the formwork box 52 during pouring.

[0032] As a preferred solution, two symmetrical locking pressure plates 511 are provided at one end of the support body 51 away from the template box 52. Locking pressure notches are provided on the opposite sides of the two locking pressure plates 511. The steel rail 3 is fixed by the locking pressure plates 511 and the locking pressure notches on both sides. The bottom surface of the locking pressure notch always locks the bottom surface of the rail. The locking pressure plate 511 is fixedly connected to the support body 51 through a fixing bolt 512, so as to maintain the overall stability.

[0033] As a preferred solution, steel bars 21 and hooked bars 22 are provided in the tunnel foundation 2. The steel bars 21 are laid along the length of the tunnel 1. The hooked bars 22 are connected to the steel bars 21 in the vertical direction. The steel bars 21 and the hooked bars 22 form a steel reinforcement cage, increasing the overall strength of the tunnel foundation.

[0034] Obviously, the above embodiments are merely examples given for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. The obvious changes or variations derived therefrom still fall within the protection scope of the creation of the present utility model.

Claims

1. A drainage ditch casting template structure for a railway tunnel, comprising a tunnel and a tunnel foundation in the tunnel, wherein the tunnel foundation is provided with rails, characterized in that: Drainage ditch templates are symmetrically arranged on both sides of the tunnel foundation. The drainage ditch templates include a bracket body and a template box. One end of the bracket body is fixed under the rail, and the other end is connected to the template box. Concrete is poured around the outside of the template box. After the template box is removed, a drainage ditch is formed.

2. The drainage ditch casting template structure for a railway tunnel according to claim 1 is characterized in that: The cross section of the template box is in an inverted trapezoidal shape.

3. The drainage ditch casting template structure for a railway tunnel according to claim 1 or 2, characterized in that: The drainage ditch template also includes height adjustment studs and square tubes arranged above the template box. The height adjustment studs pass through the square tubes and are fixed to the surface of the template box. The square tubes are fixed to the ends of the bracket body, and the bracket body lifts the square tubes and the template box.

4. The drainage ditch casting template structure for a railway tunnel according to claim 3 is characterized in that: The surface of the square tube is provided with a height-adjusting nut matched with the height-adjusting stud. When the height-adjusting nut is rotated, the height-adjusting stud and the template box are lifted and lowered integrally.

5. The drainage ditch casting template structure for a railway tunnel according to claim 4, characterized in that: A detachable Z-shaped limit buckle plate is provided on the surface of the bracket body, one end of the limit buckle plate is fixed on the bracket body, and the other end is pressed on the surface of the square tube. A limit block is provided on the opposite side of the limit buckle plate, and the square tube is always between the limit buckle plate and the limit block.

6. The drainage ditch casting template structure for a railway tunnel according to claim 5, characterized in that: The bracket body is also provided with two positioning screws, which are arranged on both sides of the square tube, and the ends of the positioning screws are in contact with the surface of the template box.

7. The drainage ditch casting template structure for a railway tunnel according to claim 1, characterized in that: Two adjacent template boxes are connected via a connecting plate, and ports of the template boxes are blocked via the connecting plate.

8. The drainage ditch casting template structure for a railway tunnel according to claim 1, characterized in that: The bracket body is provided with two symmetrical locking plates at one end away from the template box, and locking notches are provided on opposite sides of the two locking plates. The rail is fixed by the locking plates and locking notches on both sides.

9. The drainage ditch casting template structure for a railway tunnel according to claim 8, characterized in that: The locking plate is fixedly connected to the bracket body via fixing bolts.

10. The drainage ditch casting template structure for a railway tunnel according to claim 1, characterized in that: Steel bars and hook bars are arranged in the tunnel foundation. The steel bars are laid along the length of the tunnel, and the hook bars are connected to the steel bars in a vertical direction.

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