Tunnel low side wall corner protection device

Abstract

The utility model provides a tunnel short side wall corner protection device which comprises angle steel and a first component, the first end of the first component is clamped on a lining steel bar of a tunnel short side wall, the second end of the first component is connected with the angle steel, and the first component is connected with the angle steel. The angle steel is hung on the tunnel short side wall through the first component. The tunnel short side wall corner protection device is simple and detachable in mechanism, can protect the tunnel short side wall corner, overcomes the defects that in the prior art, installation is tedious, movement and disassembly are difficult, and material consumption is large, can control cost to be at the lowest level, improves site construction efficiency, and reduces construction cost. Unified standardization of tunnel short side wall corner protection is safely and reliably achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, and more specifically, to a protection device for the edges and corners of a low side wall of a tunnel. Background Art

[0002] The filling of the tunnel invert is a key process in the field of tunnel construction. During the current invert construction process, the low side wall is generally cast in sections. After the formwork is removed, since the concrete strength is relatively low, during the secondary lining operation, it is easy to damage the edges and corners of the low side wall and it is not easy to repair. Since the damage of the edges and corners of the tunnel low side wall is relatively common, in order to meet the high standards and strict requirements of tunnel construction, it is necessary to protect the edges and corners of the low side wall to avoid damage affecting the secondary lining construction. The conventional practice in tunnel construction for many years has been to place steel plates to cover the low side wall for protection. However, during the secondary lining construction process, the steel plates often need to be moved, and at the same time, the steel plates are difficult to fix and occupy a large space, which is easy to consume materials and labor, and cannot meet the increasingly high standard requirements of current tunnel construction.

[0003] For example, the utility model patent application with the publication number CN217581356U discloses a concrete edge and corner protection device. For the concrete edges and corners that are easily damaged, the device uses a bottom plate, a support plate, and a protection plate to protect them. The bottom plate is provided with a counterweight, and the support plate is connected to the bottom plate and the protection member through a plug-in rod. The surface of the protection plate close to the support plate and the surface of the support plate away from the bottom plate jointly form a protection corner to prevent the concrete edges and corners from being damaged. During the operation process, the bottom plate plays a supporting role, and the counterweight stabilizes the center of gravity of the protection device to prevent the support plate and the protection plate from tipping towards the concrete direction, avoiding the damage of the concrete edges and corners. However, its structure is relatively complex and not convenient for multiple disassembly and assembly. The utility model patent application with the publication number CN210713892U discloses a frictional concrete edge and corner protection device. The device includes a straight-edge protection device that abuts against the concrete edge and corner. The straight-edge protection device includes a first angle steel. One side of the first angle steel is connected to a friction plate, and a flexible permeable cushion plate is provided on the friction plate. The two ends of the first angle steel are provided with first U-shaped grooves, and buckle rings are provided in the first U-shaped grooves. The multiple straight-edge protection devices are connected through the buckle rings. It mainly connects the angle steels through the U-shaped grooves at both ends to form an integral body. However, its structure is relatively complex and not convenient for multiple disassembly and assembly and use. Summary of the Utility Model

[0004] The purpose of the present utility model is to solve at least one of the above-mentioned deficiencies existing in the prior art. For example, one of the purposes of the present utility model is to provide a protection device for the edges and corners of a tunnel low side wall that is convenient for multiple disassembly and assembly and has a simple structure.

[0005] To achieve the above object, on the one hand, the present utility model provides a protection device for the corners of a tunnel low sidewall. The protection device for the corners of the tunnel low sidewall includes an angle steel and a first member. Among them, the first end of the first member is clamped on the lining steel bars of the tunnel low sidewall, the second end of the first member is connected to the angle steel, and the angle steel is hung on the tunnel low sidewall through the first member.

[0006] In an exemplary embodiment of the protection device for the corners of the tunnel low sidewall of the present utility model, a connecting bolt may also be provided on the angle steel. The second end of the first member passes through the connecting bolt and is fixed using a fastening bolt.

[0007] In an exemplary embodiment of the protection device for the corners of the tunnel low sidewall of the present utility model, the angle steel and the connecting bolt may be fixedly connected.

[0008] In an exemplary embodiment of the protection device for the corners of the tunnel low sidewall of the present utility model, the angle steel may further include a bottom plate and a side plate that are perpendicular to each other and form an angle shape. The lengths of the bottom plate and the side plate can be determined according to the curvature of the tunnel low sidewall.

[0009] In an exemplary embodiment of the protection device for the corners of the tunnel low sidewall of the present utility model, the length of the first end of the first member may be greater than the spacing between the lining steel bars.

[0010] In an exemplary embodiment of the protection device for the corners of the tunnel low sidewall of the present utility model, the distance between the first end and the second end of the first member may be greater than the distance between the lining steel bars and the angle steel.

[0011] In an exemplary embodiment of the protection device for the corners of the tunnel low sidewall of the present utility model, the angle steel may be an equal-angle steel.

[0012] In an exemplary embodiment of the protection device for the corners of the tunnel low sidewall of the present utility model, the outer surface of the angle steel and the corners of the tunnel low sidewall may be closely attached.

[0013] In an exemplary embodiment of the protection device for the corners of the tunnel low sidewall of the present utility model, the first member may be a T-shaped structure.

[0014] In an exemplary embodiment of the protection device for the corners of the tunnel low sidewall of the present utility model, the protection device for the corners of the tunnel low sidewall may further include a second member. The second member may be arranged in parallel with the first member, and the third end of the second member may be clamped between the lining steel bars of the tunnel low sidewall, and the fourth end of the second member may be connected to the angle steel.

[0015] Compared with the prior art, the beneficial effects of the present utility model include at least one of the following:

[0016] (1) The corner protection device for the low side wall of the tunnel designed by the utility model is simple to process and install. This solution uses common ordinary angle steel in construction for processing and production. The materials are easily available and the processing is simple. When installing in the inverted arch section of the tunnel, simply place the device at the corner of the low side wall and firmly connect it to the steel bars of the low side wall. The installation and disassembly are simple and efficient.

[0017] (2) The corner protection device for the low side wall of the tunnel designed by the utility model has strength and stability. It is processed from angle steel with a certain strength. Compared with ordinary protection devices, it has a certain ability to resist deformation and damage.

[0018] (3) The corner protection device for the low side wall of the tunnel designed by the utility model has a beautiful and standard appearance. It is centrally processed by the steel bar processing yard according to the calculated structural dimensions, and the dimensions are unified. Compared with the protection devices processed randomly, it has the characteristics of straight linearity and flat surface after installation, avoiding the disadvantages of mess in the inverted arch section of the existing construction, and meeting the requirements of current tunnel construction standardization.

[0019] (4) The corner protection device for the low side wall of the tunnel designed by the utility model can be recycled and reused. This protection device is processed and made from angle steel with strength and is not easily damaged during construction. During the construction of the secondary lining of the tunnel, the protection device can be dragged forward for circular installation and use, which is beneficial to saving construction costs while realizing the protection of the corners of the low side wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Through the following description with reference to the drawings, the above and other objects and / or features of the utility model will become clearer, where:

[0021] Figure 1 Fig. shows a schematic diagram of the use of the corner protection device for the low side wall of the tunnel of the utility model.

[0022] Figure 2 Fig. shows a schematic diagram of the structure of the corner protection device for the low side wall of the tunnel of the utility model.

[0023] Figure 3 Fig. shows a schematic diagram of the detailed connection of the corner protection device for the low side wall of the tunnel of the utility model.

[0024] Reference Signs:

[0025] 1 - Angle steel; 11 - Bottom plate; 12 - Side plate; 2 - First member; 3 - Lining steel bar; 4 - Connecting bolt; 5 - Fastening bolt; 6 - Second member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Hereinafter, the corner protection device for the low side wall of the tunnel of the utility model will be described in detail with reference to exemplary embodiments.

[0027] It should be noted that in the present utility model, "first", "second", "third", etc. are only for convenience of description and easy distinction, and cannot be construed as indicating or implying relative importance. "Upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. are only for convenience of description and to form relative orientation or positional relationships, and do not indicate or imply that the components referred to must have such specific orientations or positions. Unless otherwise clearly specified and defined, the terms "installed", "connected", "joined" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Exemplary Embodiment 1

[0029] This exemplary embodiment provides a protection device for the edges and corners of a tunnel low side wall. As Figures 1 to 3 shown, the protection device for the edges and corners of the tunnel low side wall includes an angle steel 1 and a first member 2. Among them, the first end of the first member 2 is clamped on the lining steel bars 3 of the tunnel low side wall, and the second end of the first member 2 is connected to the angle steel 1. The angle steel 1 is hung on the tunnel low side wall through the first member 2.

[0030] Furthermore, a connecting bolt 4 can be provided on the angle steel 1, and the second end of the first member 2 passes through the connecting bolt 4 and is fixed using a fastening bolt 5.

[0031] Furthermore, the angle steel 1 and the connecting bolt 4 can be fixedly connected.

[0032] Furthermore, the angle steel 1 can further include a bottom plate 11 and a side plate 12 that are perpendicular to each other and form an angle shape, and the lengths of the bottom plate 11 and the side plate 12 can be confirmed according to the curvature of the tunnel low side wall.

[0033] Furthermore, the length of the first end of the first member 2 can be greater than the spacing of the lining steel bars 3.

[0034] Furthermore, the spacing between the first end and the second end of the first member 2 can be greater than the spacing between the lining steel bars 3 and the angle steel 1.

[0035] Furthermore, the angle steel 1 can be an equal - angle steel.

[0036] Furthermore, the angle steel 1 and the outer surface of the edges and corners of the tunnel low side wall can be closely fitted.

[0037] Furthermore, the first member 2 can be of a T - shaped structure.

[0038] Further, the tunnel low sidewall corner protection device may further include a second member 6. The second member 6 may be arranged in parallel with the first member 2. The third end of the second member 6 may be clamped between the lining steel bars 3 of the tunnel low sidewall, and the fourth end of the second member 6 may be connected to the angle steel 1.

[0039] The working principle of the device is as follows:

[0040] According to the radian on one side of the tunnel low sidewall corner, calculate the sizes of the side plate and bottom plate (top plate) of the angle steel that meet the low sidewall corner to ensure that it does not affect the normal construction of the secondary lining waterproof board and steel bars. According to the calculated sizes, process equal-angle steel to obtain the angle steel required for the tunnel low sidewall corner protection device, and this angle steel is L-shaped. By welding connection bolts on the angle steel side, and then passing a member such as a T-shaped member through the connection bolts, the angle steel can be hung on the tunnel low sidewall through the T-shaped member, and the T-shaped member can be directly placed between the reserved steel bars of the low sidewall. By placing the angle steel on the low sidewall corner with its bottom plate facing up and connecting it to the steel bars of the low sidewall through a member such as a T-shaped member, it is ensured that the device can be closely attached to the concrete surface of the low sidewall, and its placement is smooth, stable and beautiful. In addition, according to the progress of the tunnel secondary lining construction, the low sidewall corner protection device can be timely dragged forward for installation, ensuring the timeliness, cyclicity and continuity of the low sidewall corner protection device.

[0041] In summary, the beneficial effects include: The mechanism of the tunnel low sidewall corner protection device designed by the present utility model is simple and detachable, can protect the tunnel low sidewall corner, overcomes the disadvantages of complicated installation, difficult movement, difficult disassembly, large material consumption, etc. in the prior art, and can control the cost at the lowest level, improve the on-site construction efficiency, and safely and reliably achieve the unified standardization of tunnel low sidewall corner protection.

[0042] Although the present utility model has been described above in conjunction with the exemplary embodiments and the accompanying drawings, those of ordinary skill in the art should understand that various modifications can be made to the above embodiments without departing from the spirit and scope of the claims.

Claims

1. A tunnel low side wall corner protection device, characterized in that: The corner protection device for the tunnel short side wall includes an angle steel and a first component, wherein the first end of the first component is clamped on the lining steel bars of the tunnel short side wall, the second end of the first component is connected to the angle steel, and the angle steel is hung on the tunnel short side wall through the first component.

2. The tunnel short side wall corner protection device according to claim 1, characterized in that: The angle steel is also provided with a connecting bolt, and the second end of the first member passes through the connecting bolt and is fixed using a fastening bolt.

3. The tunnel short side wall edge protection device according to claim 2 is characterized in that: The angle steel and the connecting bolts are fixedly connected.

4. The tunnel short side wall edge protection device according to claim 1, characterized in that: The angle steel also includes a bottom plate and side plates that are perpendicular to each other and form an angle. The lengths of the bottom plate and side plates are determined by the curvature of the short side wall of the tunnel.

5. The tunnel short side wall edge protection device according to claim 1, characterized in that: The length of the first end of the first member is greater than the spacing of the lining steel bars.

6. The tunnel short side wall corner protection device according to claim 1, characterized in that: The distance between the first end and the second end of the first member is greater than the distance between the lining steel bars and the angle steel.

7. The tunnel short side wall edge protection device according to claim 1, characterized in that: The angle steel is an equilateral angle steel.

8. The tunnel short side wall edge protection device according to claim 1, characterized in that: The angle steel and the outer surface of the corner of the tunnel short side wall are tightly fitted.

9. The tunnel short side wall edge protection device according to claim 1, characterized in that: The first component is a T-shaped structure.

10. The tunnel short side wall edge protection device according to claim 1, characterized in that: The tunnel short side wall edge protection device also includes a second component, which is arranged parallel to the first component, and the third end of the second component is clamped between the lining steel bars of the tunnel short side wall, and the fourth end of the second component is connected to the angle steel.

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