Tunnel formwork supporting device

Abstract

The utility model relates to a tunnel formwork supporting device which solves the problems that an existing tunnel slope formwork supporting system is prone to deformation and insufficient in stability, an anti-sliding steel bar is located in a hole of a bottom beam, a channel steel bottom plate of the bottom beam is matched with bottom plate concrete b, a horizontal base plate of the bottom beam is welded to a vertical positioning steel bar, and a steel pipe is erected on the positioning steel bar in a sleeved mode. The adjustable support comprises a manual rotating sleeve with a handle and a screw, the upper end of the screw is welded to the horizontal disc, the lower portion of the main beam is welded to the main beam supporting leg base plate, the main beam supporting leg base plate is located in the horizontal disc, the secondary beam and the formwork are sequentially arranged above the main beam, and the adjustable support is easy to manufacture, convenient to install, stable in structure, safe and reliable.

Description

Technical Field

[0001] The utility model relates to a tunnel formwork supporting device, in particular to a tunnel inclined formwork supporting device suitable for a large-angle tunnel. Background Art

[0002] In water conservancy and hydropower projects, steep-angle tunnels are very common. When conventional tunnel top slab concrete lining is used, a full-height support frame is usually used as the support system for the formwork. However, due to the large inclination angle of the tunnel, the entire support system has a large down-slope force component, and is affected by the inclination angle of the tunnel. The positive contact area between the components of the support system is greatly reduced, and some components are stressed and prone to deformation or damage, which eventually leads to deformation of the formwork, affecting the quality of concrete construction and posing a major safety hazard. Summary of the Invention

[0003] The purpose of the utility model is to provide a tunnel formwork supporting device which is simple to manufacture, convenient to install, stable in structure, safe and reliable.

[0004] The utility model is achieved in this way:

[0005] Tunnel formwork support device, vertical anti-slip steel bars 7 are pre-embedded in the position where the bottom beam 4 is set on the bottom plate concrete b, the bottom beam 4 is a bottom beam channel steel 4-1 with an opening arranged upward, the anti-slip steel bars 7 are located in the hole of the bottom beam channel steel bottom plate, the bottom beam channel steel bottom plate is matched with the bottom plate concrete b, the bottom beam channel steel opening is welded to the bottom beam support leg 4-2, the bottom beam support leg 4-2 is welded to the horizontal pad 4-3, the horizontal pad 4-3 is welded to the vertical positioning steel bar 4-4, the steel pipe 5 sleeve is erected on the positioning steel bar 4-4, and all the steel pipes 5 adjusted to the vertical state are connected into a whole through connecting rods and fasteners. The adjustable support 6 includes a manual rotating sleeve 9 with a handle and a screw 10. The manual rotating sleeve 9 The outer wall rotates with the inner wall of the top of the steel pipe 5, the internal thread of the manual rotating sleeve 9 cooperates with the screw 10, the upper end of the screw is welded to the horizontal plate 11, the top of the main beam leg 1-3 cooperates with and welds to the bottom of the main beam 1, and the bottom of the main beam leg 1-3 is welded to the leg pad 1-4. The leg pad 1-4 is located in the horizontal plate 11, and the secondary beam 2 and the template 3 are installed on the main beam 1 in sequence. The main beam and the secondary beam intersect, and the secondary beam block 1-2 welded on the main beam 1 cooperates with the secondary beam 2. By setting steel pipes 5 of different lengths and operating the adjustable support 6, the main beam, secondary beam and template form a shape that meets the requirements of the tunnel section profile. After reinforcement, the tunnel top concrete a can be poured.

[0006] The main beam 1 is composed of two main beam channel steels 1-1 open butt-welded.

[0007] The connecting rods are vertical and horizontal rods, wall connecting parts, scissors braces, and sweeping rods, and the fasteners are commodities.

[0008] The beneficial effects of the utility model are as follows:

[0009] The utility model overcomes the shortcomings of the existing tunnel slope formwork support system, such as poor stress, easy deformation and insufficient stability, and provides a tunnel slope formwork support device that is simple to manufacture, easy to install, stable in structure, safe and reliable.

[0010] The utility model reasonably decomposes the larger down-slope force of the entire formwork support system through scientific structural design, thereby ensuring the stability of the formwork support system on the inclined surface. At the same time, by setting structures such as support legs and blocks, the positive contact area between the various components of the support system is guaranteed, effectively avoiding support deformation or damage caused by stress concentration, and greatly improving construction safety and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0012] Figure 2 It is a schematic diagram of the main structure of the utility model.

[0013] Figure 3 It is a structural schematic diagram of the main beam system of the utility model.

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

[0015] Figure 5 This is a detailed diagram of the upper support structure of the utility model.

[0016] Figure 6 This is a detailed diagram of the lower support structure of the utility model.

[0017] The numbers in the figure represent:

[0018] 1. Main beam; 1-1. Main beam channel steel; 1-2. Secondary beam block; 1-3. Main beam leg; 1-4. Main beam leg pad; 2. Secondary beam; 3. Formwork; 4. Bottom beam; 4-1. Bottom beam channel steel; 4-2. Bottom beam leg; 4-3. Bottom beam leg pad; 4-4. Positioning steel bars; 5. Steel pipe; 6. Adjustable support; 7. Anti-slip steel bars; a. Tunnel top concrete; b. Tunnel bottom slab concrete. DETAILED DESCRIPTION

[0019] Tunnel formwork support device, vertical anti-slip steel bars 7 are pre-embedded in the position where the bottom beam 4 is set on the bottom plate concrete b, the bottom beam 4 is a bottom beam channel steel 4-1 with an opening arranged upward, the anti-slip steel bars 7 are located in the hole of the bottom beam channel steel bottom plate, the bottom beam channel steel bottom plate is matched with the bottom plate concrete b, the bottom beam channel steel opening is welded to the bottom beam support leg 4-2, the bottom beam support leg 4-2 is welded to the horizontal pad 4-3, the horizontal pad 4-3 is welded to the vertical positioning steel bar 4-4, the steel pipe 5 sleeve is erected on the positioning steel bar 4-4, and all the steel pipes 5 adjusted to the vertical state are connected into a whole through connecting rods and fasteners. The adjustable support 6 includes a manual rotating sleeve 9 with a handle and a screw 10. The manual rotating sleeve 9 The outer wall rotates with the inner wall of the top of the steel pipe 5, the internal thread of the manual rotating sleeve 9 cooperates with the screw 10, the upper end of the screw is welded to the horizontal plate 11, the top of the main beam leg 1-3 cooperates with and welds to the bottom of the main beam 1, and the bottom of the main beam leg 1-3 is welded to the leg pad 1-4. The leg pad 1-4 is located in the horizontal plate 11, and the secondary beam 2 and the template 3 are installed on the main beam 1 in sequence. The main beam and the secondary beam intersect, and the secondary beam block 1-2 welded on the main beam 1 cooperates with the secondary beam 2. By setting steel pipes 5 of different lengths and operating the adjustable support 6, the main beam, secondary beam and template form a shape that meets the requirements of the tunnel section profile. After reinforcement, the tunnel top concrete a can be poured.

[0020] The main beam 1 is composed of two main beam channel steels 1-1 open butt-welded.

[0021] The connecting rods are vertical and horizontal rods, wall connecting parts, scissors braces, and sweeping rods, and the fasteners are commodities.

[0022] The following is a further detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments.

[0023] Figures 1 to 6 The invention shows an example of a tunnel slope lining formwork support device. The device is composed of four parts: a main beam system, a bottom beam system, a rod support system and a formwork support system.

[0024] The main beam system includes a main beam channel steel 1-1, a secondary beam stopper 1-2, a main beam leg 1-3, and a main beam leg pad 1-4. The main beam 1 is composed of two channel steels 1-1 welded in opposite directions. The main beam leg 1-3 and the secondary beam stopper 1-2 are connected to the main beam 1 as a whole by welding. The main beam leg pad 1-4 is welded to the bottom of the main beam leg 1-3.

[0025] The bottom beam system includes a bottom beam 4, bottom beam legs 4-2, bottom beam leg pads 4-3, and positioning steel bars 4-4; the bottom beam 4 is a single channel steel 4-1 with an opening facing upward, and the bottom beam legs 4-2, bottom beam leg pads 4-3, positioning steel bars 4-4 and other components are welded to the bottom beam channel steel 4-1 in sequence from bottom to top to form a whole; the bottom beam channel steel 4-1 is provided with holes, and the anti-slip steel bars 7 pass through the bottom beam holes and are anchored in the tunnel bottom slab concrete b.

[0026] The formwork support system includes a secondary beam 2 and a formwork 3; the secondary beam 2 is bent according to the curve shape of the top of the tunnel section, and is preferably a channel steel or square steel.

[0027] The rod support system is composed of a steel pipe 5 and an adjustable support. To ensure the stability of the rod support system, the steel pipe support frame can be reinforced with reference to the relevant requirements of the full-hall support frame.

[0028] In this example, the spacing of the main beam legs 1-3, secondary beam blocks 1-2, and bottom beam legs 4-2 is consistent with the spacing of the secondary beam 2; the spacing of the main beam 1 is consistent with the spacing of the bottom beam 4; the specific spacing can be determined based on structural force calculations.

[0029] In actual application, the main beam 1 and bottom beam 4 can be processed and manufactured according to the determined dimensions first, and the anti-slip steel bars 7 can be pre-buried in the appropriate position of the bottom slab concrete b; after the bottom slab concrete b meets the strength requirements, the bottom beam 4 can be fixed to the bottom slab concrete b through the anti-slip steel bars 7; then the steel pipe 5 is placed on the bottom beam positioning steel bar 4-4, and the vertical steel pipe 5 is adjusted to a vertical state and connected into a whole by setting the vertical and horizontal bars of the full-floor support frame, wall connecting parts, scissors braces and sweeping rods; an adjustable support 6 is installed on the top of the steel pipe 5; the main beam 1, secondary beam 2 and formwork 3 are installed in sequence above the adjustable support 6. By setting steel pipes 5 of different lengths and operating the adjustable support 6, the main beam 1, secondary beam 2 and formwork 3 can be set to a shape that meets the requirements of the tunnel cross-section profile. After reinforcement, the tunnel top concrete a can be poured.

Claims

1. Tunnel formwork support device, characterized in that: The vertical anti-slip reinforcement (7) is pre-buried in the position where the bottom beam (4) is set on the bottom plate concrete b. The bottom beam (4) is a bottom beam channel steel (4-1) with an opening arranged upward. The anti-slip reinforcement (7) is located in the hole of the bottom beam channel steel bottom plate. The bottom beam channel steel bottom plate is matched with the bottom plate concrete b. The bottom beam channel steel opening is welded to the bottom beam support leg (4-2). The bottom beam support leg (4-2) is welded to the horizontal pad (4-3). The horizontal pad (4-3) is welded to the vertical positioning reinforcement (4-4). The steel pipe (5) is sleeved on the positioning reinforcement (4-4). All the steel pipes (5) adjusted to a vertical state are connected into a whole through a connecting rod and a fastener. The adjustable support (6) includes a manual rotating sleeve (9) with a handle and a screw (10). The outer wall of the manual rotating sleeve (9) is connected to the steel pipe ( 5) The inner wall of the top is rotated to fit, the internal thread of the manual rotating sleeve (9) is matched with the screw (10), the upper end of the screw is welded to the horizontal plate (11), the upper part of the main beam leg (1-3) is matched with and welded to the lower part of the main beam (1), the lower part of the main beam leg (1-3) is welded to the leg pad (1-4), the leg pad (1-4) is located in the horizontal plate (11), the secondary beam (2) and the template (3) are installed on the main beam (1) in sequence, the main beam and the secondary beam intersect, the secondary beam block (1-2) welded on the upper part of the main beam (1) is matched with the secondary beam (2), by setting steel pipes (5) of different lengths and operating the adjustable support (6), the main beam, the secondary beam and the template form a shape that meets the requirements of the tunnel section profile, and after reinforcement, the tunnel top concrete a can be poured.

2. The tunnel formwork support device according to claim 1, characterized in that: The main beam is composed of two main beam channel steels (1-1) open butt welded.

3. The tunnel formwork support device according to claim 1, characterized in that: The connecting rods are vertical and horizontal rods, wall connecting parts, scissors braces, and sweeping rods, and the fasteners are commodities.

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