Main reinforcement limiting device for secondary lining of tunnel main hole

Abstract

The utility model discloses a main reinforcement limiting device for a secondary lining of a tunnel main hole. The limiting device is provided with U-shaped fixing steel bars and a supporting steel bar, the U-shaped fixing steel bars are welded to the two ends of the supporting steel bar, and the U-shaped fixing steel bars and the supporting steel bar are welded to machine the two lining main steel bars. According to the limiting device, the U-shaped fixing steel bars of the phi 10 specification and the supporting steel bars of the phi 18 / phi 20 specification are welded to machine the second lining, in order to facilitate installation and fixation, the total length of the limiting device is larger than the layer distance of the main steel bars of the second lining by 1 cm, and the limiting device is connected with the main steel bars through binding wires after installation. The simple secondary lining steel bar layer distance limiting device is designed according to the actual site situation in combination with the function of the limiting steel bars, as shown in the figure 3, the limiting device can ensure that the secondary lining main steel bar layer distance meets the design requirement, manufacturing and mounting are convenient, the process construction progress is accelerated, and the material consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the field of main reinforcement limiting of secondary lining of a tunnel main hole, and specifically relates to a main reinforcement limiting device of secondary lining of a tunnel main hole. Background Art

[0002] At present, in order to ensure that the layer spacing of the inner and outer main reinforcement of the secondary lining of the main tunnel meets the design requirements during construction, inner and outer main reinforcement structural limit steel bars are set. The existing limit steel bars are arranged at a spacing of @200×200 (ring distance×longitudinal distance). Figure 1 As shown, for the existing steel bar limiters, during the construction process, the processing and installation of the limit steel bars are complicated, especially the operation is inconvenient during the installation and welding process, the welding time is long and the welding quality cannot be guaranteed, which may damage the main bars. Utility Model Content

[0003] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a tunnel main hole secondary lining main reinforcement limiting device, the present application is a simple secondary lining steel bar layer distance limiting device, such as Figure 3 As shown, the limit device can not only ensure that the interlayer distance of the secondary lining main reinforcement meets the design requirements, but also is easy to manufacture and install, speeds up the construction process and saves material consumption.

[0004] The utility model is realized by constructing a main reinforcement limiting device for secondary lining of a main tunnel; the limiting device comprises U-shaped fixed steel bars and supporting steel bars, U-shaped fixed steel bars are welded at both ends of the supporting steel bars, and the U-shaped fixed steel bars and the supporting steel bars are welded to process the secondary lining main reinforcement.

[0005] Furthermore, in order to facilitate installation and fixation, the total length of the limit device is greater than the interlayer distance of the two lining main reinforcements by 1 cm, and after installation, it is connected to the main reinforcement with a wire tie.

[0006] Furthermore, the U-shaped fixing steel bars are Φ10 steel bars, and the supporting steel bars are Φ18 / Φ20 steel bars.

[0007] The utility model has the following advantages: the limiting device uses Φ10 "U" type fixed steel bars and Φ18 / Φ20 supporting steel bars to weld and process the secondary lining. For the convenience of installation and fixation, the total length of the limiting device is greater than the secondary lining main reinforcement layer distance 1cm, and after installation, it is connected to the main reinforcement with a wire tie. This application designs a simple secondary lining reinforcement layer distance limiting device based on the actual situation on site and the limiting steel bar function, such as Figure 3 As shown, the limit device can not only ensure that the interlayer distance of the secondary lining main reinforcement meets the design requirements, but also is easy to manufacture and install, speeds up the construction process and saves material consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1It is the original design lining main reinforcement limit reinforcement diagram;

[0009] Figure 2 yes Figure 1 Middle AA section;

[0010] Figure 3 This is the structural diagram of the main reinforcement limiting device of the secondary lining of the main tunnel of the tunnel in this application.

[0011] Among them: U-shaped fixed steel bars 10, supporting steel bars 20, and secondary lining main bars 30. DETAILED DESCRIPTION

[0012] The following will be combined with the attached Figure 1-Figure 3 The utility model is described in detail, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. 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.

[0013] The utility model provides a main reinforcement limiting device for secondary lining of a tunnel main hole, such as Figure 3 As shown, it can be implemented as follows; the limiting device has a U-shaped fixed steel bar 10 and a supporting steel bar 20, and the U-shaped fixed steel bar 10 is welded at both ends of the supporting steel bar 20, and the U-shaped fixed steel bar 10 and the supporting steel bar 20 are welded to process the second lining main reinforcement 30.

[0014] In order to facilitate installation and fixation, the total length of the limiting device is greater than the 30 layer spacing of the second lining main reinforcement by 1 cm, and it is connected to the main reinforcement with wire after installation.

[0015] The U-shaped fixing steel bar 10 is a Φ10 steel bar, and the supporting steel bar 20 is a Φ18 / Φ20 steel bar.

[0016] The advantages of this application are described below; the limiting device uses Φ10 "U"-shaped fixed steel bars and Φ18 / Φ20 supporting steel bars to weld and process the secondary lining. For the convenience of installation and fixation, the total length of the limiting device is greater than the secondary lining main reinforcement layer distance 1cm, and after installation, it is connected to the main reinforcement with a wire tie. This application designs a simple secondary lining reinforcement layer distance limiting device based on the actual situation on site and the limiting steel bar function, such as Figure 3 As shown, the limit device can not only ensure that the interlayer distance of the secondary lining main reinforcement meets the design requirements, but also is easy to manufacture and install, speeds up the construction process and saves material consumption.

[0017] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A main reinforcement limiting device for secondary lining of a tunnel main hole, characterized in that; The limiting device comprises a U-shaped fixing steel bar (10) and a supporting steel bar (20), the U-shaped fixing steel bar (10) being welded to both ends of the supporting steel bar (20), and the second lining main reinforcement (30) is processed by welding the U-shaped fixing steel bar (10) and the supporting steel bar (20).

2. According to claim 1, a main reinforcement limiting device for secondary lining of a tunnel main hole is characterized in that ； In order to facilitate installation and fixing, the total length of the limit device is greater than the layer spacing of the second lining main reinforcement (30) by 1 cm, and after installation, it is connected to the main reinforcement by a tie wire.

3. According to claim 1, a main reinforcement limiting device for secondary lining of a tunnel main hole is characterized in that: The U-shaped fixing steel bar (10) is a Φ10 steel bar, and the supporting steel bar (20) is a Φ18 / Φ20 steel bar.

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