Flexible arc-shaped template for tunnel engineering

Abstract

A flexible arc-shaped formwork for tunnel engineering is used in cooperation with a bottom frame, a supporting frame and an arch frame, the bottom frame is arranged on a rail in a tunnel to be constructed, the supporting frame is arranged on the bottom frame, one end of the supporting frame is connected to the bottom frame, the other end of the supporting frame is connected with the inner wall of the arch frame, and the flexible arc-shaped formwork is arranged on the outer wall of the arch frame. The flexible arc-shaped formwork comprises a panel, a module A, a module B and reinforcing ribs, the panel is of a rectangular plate-shaped structure made of flexible materials, the module A and the module B are symmetrically arranged on the two sides of the bottom face of the panel in the axis direction of the tunnel, baffles are symmetrically arranged on the other two sides of the panel, the module A is of an inverted isosceles trapezoid plate-shaped structure, and the module B is of an inverted isosceles trapezoid plate-shaped structure. The module B is of an inverted isosceles trapezoid plate-shaped structure, and reinforcing ribs are arranged on the bottom face of the flexible arc-shaped formwork. The flexible arc-shaped formwork is simple in structure, convenient to use and good in universality, and solves the problems that an existing pouring formwork needs to be manufactured independently, has many cross sections and is short in cross section length, cannot be used universally and is too high in production cost.

Description

Technical Field

[0001] The utility model is designed in the technical field of tunnel construction, and specifically relates to a flexible arc template for tunnel engineering. Background Art

[0002] With the large-scale use of highway, railway tunnels and urban subways, the amount of tunnel engineering is increasing. The inner wall of the tunnel needs to be reinforced and maintained during tunnel engineering. The inner wall of the tunnel is cast with concrete using a casting trolley, which requires the use of a template for casting. The existing casting templates need to be made separately to match the curvature of the arch of the inner wall of the tunnel. When there are many sections and the section length is short, the customized templates have poor versatility, which increases the construction cost. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a flexible arc-shaped template for tunnel engineering, which solves the problems mentioned in the background technology that the existing templates need to be made separately, have poor versatility and high cost.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a flexible arc formwork for tunnel engineering, the flexible arc formwork is used in conjunction with a base frame, a support frame and an arch frame, the base frame is arranged on a track inside the tunnel to be constructed, a support frame is arranged on the base frame, one end of the support frame is connected to the base frame, and the other end is connected to the inner wall of the arch frame, and the outer wall of the arch frame is provided with a flexible arc formwork.

[0005] The flexible arc formwork includes a panel, module A, module B and reinforcing ribs. The panel is a rectangular plate structure made of flexible material. Modules A and module B are symmetrically arranged on both sides of the bottom surface of the panel along the tunnel axis direction, and baffles are symmetrically arranged on the other two sides of the panel. The module A is an inverted isosceles trapezoidal plate structure, and the module B is an inverted isosceles trapezoidal plate structure. A through hole is arranged in the center of the module B. The bottom surface of the flexible arc formwork is provided with reinforcing ribs parallel to the tunnel axis direction at intervals.

[0006] The panel has side edges of module A and module B on its bottom surface, and modules A and module B are arranged in sequence from the middle to both ends. The number of modules A and modules B is multiple, and multiple modules A and modules B are arranged alternately. The upper bottom surface of module A is solidly integrated with the bottom surface of the panel, and the upper bottom surface of module B is solidly integrated with the bottom surface of the panel. The length of the upper bottom surface of module A is smaller than the length of the upper bottom surface of module B. Module A and module B have the same height, and the length of the lower bottom surface of module A is smaller than the length of the lower bottom surface of module B. The lower bottom surfaces of module A and module B both match the curved surface of the arch.

[0007] The baffle is provided with a connecting rod, the number of which is two, which are arranged at intervals, and the connecting rod passes through the baffles and reinforcing ribs on both sides. The connecting rod is made of flexible material and cooperates with the gap between module A and module B to cause the flexible arc template to deform.

[0008] The modules A and B are perpendicular to the bottom surface of the panel; and the baffle is perpendicular to the bottom surface of the panel.

[0009] The number of the flexible arc-shaped templates is multiple, and the multiple flexible arc-shaped templates are connected as a whole to match the arc surface of the arch frame.

[0010] The beneficial effects of the utility model are: the flexible arc-shaped template has a simple structure, is easy to use, and has good versatility, which solves the problem that the existing casting templates need to be made separately, cannot be used universally when encountering many sections and short section lengths, and have high production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model.

[0012] Figure 2 It is a side view schematic diagram of the utility model.

[0013] Figure 3 It is a schematic side view of the utility model from another direction.

[0014] Figure 4 It is a bottom view schematic diagram of the utility model.

[0015] Figure 5 This is a schematic diagram of the use of the utility model.

[0016] Figure 6 for Figure 5 Enlarged schematic diagram of Z.

[0017] In the figure: 1. base frame, 2. support frame, 3. arch frame, 4. flexible arc formwork, 5. panel, 6. module A, 7. module B, 8. connecting rod, 9. reinforcing rib, 10. baffle. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings of this specification to clearly and completely describe the technical solution of the utility model. It should be noted that 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 embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 6A flexible curved template for tunnel engineering, wherein the flexible curved template 4 is used in conjunction with a base frame 1, a support frame 2 and an arch frame 3, wherein the base frame 1 is arranged on a track inside a tunnel to be constructed, and a support frame 2 is arranged on the base frame 1, wherein one end of the support frame 2 is connected to the base frame 1, and the other end is connected to the inner wall of the arch frame 3, and a flexible curved template 4 is arranged on the outer wall of the arch frame 3. The flexible curved template 4 comprises a panel 5, a module A6, a module B7 and a reinforcing rib 9, wherein the panel 5 is a rectangular plate-like structure made of a flexible material, and modules A6 and modules B7 are symmetrically arranged on both sides of the bottom surface of the panel 5 along the tunnel axis direction, and baffles 10 are symmetrically arranged on the other two sides of the panel 5, wherein the module A6 is an inverted isosceles trapezoidal plate-like structure, and the module B7 is an inverted isosceles trapezoidal plate-like structure, and a through hole is arranged in the center of the module B7, and reinforcing ribs 9 parallel to the tunnel axis direction are arranged at intervals on the bottom surface of the flexible curved template 4. The bottom surface of the panel 5 has the side of module A6 and module B7, and the modules A6 and module B7 are arranged in sequence from the middle to the two ends. The number of the modules A6 and module B7 is multiple, and the multiple modules A6 and module B7 are arranged in a staggered manner. The upper bottom surface of the module A6 is solidly integrated with the bottom surface of the panel 5, and the upper bottom surface of the module B7 is solidly integrated with the bottom surface of the panel 5. The length of the upper bottom surface of the module A6 is less than the length of the upper bottom surface of the module B7. The height of the modules A6 and B7 is the same. The length of the lower bottom surface of the module A6 is less than the length of the lower bottom surface of the module B7. The lower bottom surface of the module A6 and the lower bottom surface of the module B7 are matched with the arc surface of the arch frame 3. The baffle 5 is provided with a connecting rod 8. The number of the connecting rods 8 is two, and the two connecting rods 8 are arranged at intervals. The connecting rod 8 passes through the baffles 10 and the reinforcing ribs 9 on both sides. The connecting rod 8 is made of flexible material, and the gap between the modules A6 and B7 is matched to deform the flexible arc template 4. The modules A6 and B7 are perpendicular to the bottom surface of the panel 5; the baffle 10 is perpendicular to the bottom surface of the panel 5. There are multiple flexible arc-shaped templates 4, which are connected as a whole to match the arc surface of the arch 3. Example

[0020] The base frame 1 is a door-type frame, the bottom of which is used in conjunction with a preset track, and the interior is open for vehicles to pass through. The support frame 2 provided on the outside of the base frame 1 includes a horizontal brace, a vertical brace and a diagonal brace. The bottom end of the vertical brace is provided with a screw for adjustment, and the adjustment range is 100mm. The arch frame 3 is divided into an arc arch and a straight arch. The arc arch cooperates with the vertical brace and the diagonal brace to act on the vault of the tunnel, and the straight arch cooperates with the horizontal brace to act on the side wall of the tunnel. The panel thickness of the straight wall formwork acting on the side wall of the tunnel is 3mm; the horizontal brace and the vertical brace are made of 100*4 square steel pipes, the diagonal brace is made of ordinary 8# channel steel, the straight arch is made of ordinary 16# I-beam, and the arc arch is composed of two cover plates and a vertical plate connecting the two cover plates. The width of the cover plate is 100mm and the thickness is 10mm. The height of the vertical plate is 140mm and the thickness of the vertical plate is 8mm. The flexible arc formwork 4 is 1200mm wide and 1000mm long, and the thickness of the panel 5 is 3mm. When installing the flexible arc formwork 4, the bottom straight wall formwork must be installed first, and the arc-shaped arch part of the arch frame 3 is moved downward by adjusting the screw at the bottom of the vertical support. At this time, the flexible vault module 4 is installed layer by layer from the bottom to the top. After installation, pouring is carried out. After pouring, the screw and the arch frame 3 are adjusted to fix the flexible arc formwork 4. Next, the base frame is moved on the track to the uncast part of the tunnel and the above steps are repeated to complete the operation.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0022] The parts not described in detail in this utility model are prior art.

Claims

1. A flexible arc formwork for tunnel engineering, wherein the flexible arc formwork (4) is used in conjunction with a base frame (1), a support frame (2) and an arch frame (3), and is characterized by: The base frame (1) is arranged on a track inside a tunnel to be constructed, a support frame (2) is arranged on the base frame (1), one end of the support frame (2) is connected to the base frame (1), and the other end is connected to the inner wall of an arch frame (3), and a flexible arc-shaped template (4) is arranged on the outer wall of the arch frame (3).

2. The flexible curved formwork for tunnel engineering according to claim 1 is characterized in that: The flexible arc-shaped template (4) comprises a panel (5), a module A (6), a module B (7) and a reinforcing rib (8); the panel (5) is a rectangular plate-shaped structure made of a flexible material; modules A (6) and modules B (7) are symmetrically arranged on two sides of the bottom surface of the panel (5) along the tunnel axis direction; baffles (10) are symmetrically arranged on the other two sides of the panel (5); the module A (6) is an inverted isosceles trapezoidal plate-shaped structure; the module B (7) is an inverted isosceles trapezoidal plate-shaped structure; a through hole is arranged at the center of the module B (7); and reinforcing ribs (8) are arranged at intervals on the bottom surface of the flexible arc-shaped template (4) in parallel with the tunnel axis direction.

3. The flexible curved formwork for tunnel engineering according to claim 2 is characterized in that: The panel (5) has side edges of a module A (6) and a module B (7) on its bottom surface. The modules A (6) and the modules B (7) are arranged in sequence from the middle to the two ends. The number of the modules A (6) and the modules B (7) is multiple, and the multiple modules A (6) and the modules B (7) are arranged in a staggered manner. The upper bottom surface of the module A (6) is integrally formed with the bottom surface of the panel (5), and the upper bottom surface of the module B (7) is integrally formed with the bottom surface of the panel (5). The length of the upper bottom surface of the module A (6) is shorter than the length of the upper bottom surface of the module B (7). The heights of the modules A (6) and B (7) are the same. The length of the lower bottom surface of the module A (6) is shorter than the length of the lower bottom surface of the module B (7). The lower bottom surfaces of the modules A (6) and B (7) are both matched with the arc surface of the arch frame (3).

4. The flexible curved formwork for tunnel engineering according to claim 2 is characterized in that: The baffle plate (10) is provided with a connecting rod (9), the number of the connecting rods (9) is two, the two connecting rods (9) are arranged at an interval, the connecting rod (9) passes through the baffle plates (10) on both sides and the reinforcing ribs (8), the connecting rod (9) is made of a flexible material, and cooperates with the gap between the module A (6) and the module B (7) to cause the flexible arc-shaped template (4) to deform.

5. The flexible curved formwork for tunnel engineering according to claim 2 is characterized in that: The module A (6) and the module B (7) are perpendicular to the bottom surface of the panel (5); and the baffle (10) is perpendicular to the bottom surface of the panel (5).

6. The flexible arc formwork for tunnel engineering according to claim 1 is characterized in that: The number of the flexible arc-shaped templates (4) is multiple, and the multiple flexible arc-shaped templates (4) are connected as a whole to match the arc surface of the arch frame (3).

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