Prefabricated part of fabricated tunnel

Abstract

The utility model discloses a prefabricated part of an assembly type tunnel, which belongs to the technical field of assembly type tunnels and comprises supporting bases and arc-shaped plates fixedly mounted on the supporting bases, the two oppositely arranged supporting bases and the arc-shaped plates are spliced to form a tunnel hole body, and the supporting bases and the arc-shaped plates are integrally prefabricated and formed. The supporting base is provided with a cable groove, the arc-shaped plate is provided with an installation groove used for containing an electromechanical box and a wire hole used for a cable to penetrate through, the wire hole is communicated with the installation groove and the cable groove, and a steel bar avoiding the installation groove and the wire hole is arranged in the arc-shaped plate. The mounting grooves consistent with the electromechanical box in size are reserved in the arc-shaped plates, after forming, placement of the electromechanical box and cables is facilitated, the main frame is integrally prefabricated and formed, secondary grooving is avoided, and influence and damage to the overall structure of the prefabricated part are reduced. When the steel bars are manufactured, reserved pre-embedding positions are considered, the steel bars are machined independently, and the construction accuracy of reserved pre-embedding is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of prefabricated tunnels, and particularly relates to a precast component of a prefabricated tunnel. Background Art

[0002] A prefabricated tunnel is formed by assembling prefabricated arc-shaped plates. In the prior art, for example, a Chinese patent with the publication number CN109723459B discloses a prefabricated lining structure for an open-cut section at the tunnel entrance. The tunnel entrance arch lining structure is formed by splicing a left lining arc-shaped precast block and a right lining arc-shaped precast block. However, during the later pipeline construction of the lining precast block, the method of later grooving is often used for pipeline construction, which not only affects the overall quality of the structure but also reduces the construction efficiency. Especially for large-volume precast components, the internal steel bars are dense, and the difficulty of secondary cutting is relatively large, which is not convenient for later grooving construction, bringing difficulties and troubles to the project construction and possibly affecting the normal progress of subsequent work.

[0003] Therefore, it is necessary to propose a precast component of a prefabricated tunnel to solve the above problems. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a precast component of a prefabricated tunnel, which is used to solve the problems in the prior art that the method of later grooving is used for pipeline construction, which not only affects the overall quality of the structure but also reduces the construction efficiency. Especially for large-volume precast components, the internal steel bars are dense, and the difficulty of secondary cutting is relatively large, which is not convenient for later grooving construction.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A precast component of a prefabricated tunnel of the utility model includes a support base and an arc-shaped plate fixedly installed on the support base. Two relatively arranged support bases and the arc-shaped plate are spliced to form a tunnel body. The support base and the arc-shaped plate are integrally prefabricated. A cable trench is provided on the support base. An installation groove for placing an electrical and mechanical box and a wire hole for cables to pass through are provided on the arc-shaped plate. The wire hole is communicated with the installation groove and the cable trench. Steel bars for avoiding the installation groove and the wire hole are arranged in the arc-shaped plate.

[0007] Furthermore, connection holes are provided on the support base, and the wire hole is communicated with the cable trench through the connection holes.

[0008] Furthermore, the support base is U-shaped.

[0009] Furthermore, a cable trench is formed between the first arm and the second arm of the support base. The top end of the first arm of the support base is fixedly connected to the arc-shaped plate, and the top end of the second arm of the support base extends above the arc-shaped plate.

[0010] Furthermore, the wire hole penetrates through the arc-shaped plate, and the arc of the wire hole is consistent with the arc of the arc-shaped plate.

[0011] The beneficial effects of the present utility model are as follows:

[0012] In the present utility model, an installation groove with the same size as the electromechanical box is reserved on the arc-shaped plate. After molding, it is convenient to place the electromechanical box and the cables. Moreover, the main frame is integrally prefabricated and formed, avoiding secondary grooving and reducing the impact and damage to the overall structure of the precast component. When fabricating the steel bars, the reserved and embedded positions are considered, and the steel bars are processed separately to ensure the construction accuracy of the reserved and embedded parts.

[0013] Other advantages, objectives, and features of the present utility model will be described in the subsequent specification, and to a certain extent, they are obvious to those skilled in the art, or those skilled in the art can obtain teachings from the practice of the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the following specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to make the objectives, technical solutions, and beneficial effects of the present utility model clearer, the present utility model provides the following drawings for illustration:

[0015] Figure 1 It is a schematic installation diagram of the support base and the arc-shaped plate of the embodiment of the present utility model.

[0016] The reference signs in the drawings are as follows: support base 1, cable trench 101, connection hole 102, arc-shaped plate 2, installation groove 201, wire hole 202. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] As Figure 1 shown, the present utility model provides a precast component for an assembled tunnel, including: a support base 1 and an arc-shaped plate 2 fixedly installed on the support base 1. Two relatively arranged support bases 1 and arc-shaped plates 2 are spliced to form the tunnel body. A cable trench 101 is provided on the support base 1, an installation groove 201 for placing an electromechanical box is provided on the arc-shaped plate 2, steel bars (not shown in the figure) for avoiding the installation groove 201 are arranged in the arc-shaped plate 2, and the arrangement of the steel bars is set by those skilled in the art according to the shape of the arc-shaped plate 2 on the premise of ensuring strength. A wire hole 202 for the cable to pass through and communicating with the installation groove 201 is provided in the arc-shaped plate 2. The steel bars in the arc-shaped plate 2 are arranged to avoid the wire hole 202. The wire hole 202 communicates with the cable trench 101, and the arc-shaped plate 2 is integrally prefabricated and formed.

[0018] In this solution, an installation groove 201 with the same size as the electromechanical box is reserved on the arc-shaped plate 2. After forming, it is convenient to complete the placement of the electromechanical box and cables. Moreover, the main frame 1 is integrally prefabricated and formed, avoiding secondary grooving and reducing the impact and damage to the overall structure of the precast component. When fabricating the steel bars, the reserved embedded positions are considered, and the steel bars are processed separately to ensure the construction accuracy of the reserved embedding.

[0019] In an embodiment of the present utility model, a connection hole 102 is provided on the support base 1, and the wire hole 202 communicates with the cable trench 101 through the connection hole 102.

[0020] In an embodiment of the present utility model, the support base 1 is U-shaped, and the U-shaped notch of the support base 1 forms the cable trench 101. It is convenient to pour the cable trench 101 later to cover the cable.

[0021] In an embodiment of the present utility model, the first arm end of the support base 1 is fixedly connected to the arc-shaped plate 2, and the second arm end of the support base 1 extends above the arc-shaped plate 2, so that after pouring concrete into the cable trench 101 to seal the cable, the concrete can cover the arc-shaped plate 2, ensuring the stability of the connection between the support base 1 and the arc-shaped plate 2.

[0022] In an embodiment of the present utility model, the wire hole 202 penetrates through the arc-shaped plate 2, and the arc of the wire hole 202 is consistent with the arc of the arc-shaped plate 2.

[0023] In an embodiment of the present utility model, a plurality of installation grooves 201 are provided on the arc-shaped plate 2, and adjacent installation grooves 201 are communicated through the wire hole 202. According to the actual construction requirements, multiple electromechanical boxes will be placed on each arc-shaped plate 2. After adjacent electromechanical boxes are installed, the cables pass through the wire hole 202 to connect the adjacent electromechanical boxes.

[0024] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present utility model and are not restrictive. Although the present utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present utility model.

Claims

1. A precast component of an assembled tunnel, comprising a support base and an arc-shaped plate fixedly installed on the support base, characterized in that: Two relatively arranged support bases and an arc-shaped plate are spliced to form the tunnel body. The support bases and the arc-shaped plate are integrally prefabricated. A cable trench is provided on the support base. An installation groove for placing an electromechanical box and a wire hole for cables to pass through are provided on the arc-shaped plate. The wire hole is communicated with the installation groove and the cable trench. Reinforcing bars for avoiding the installation groove and the wire hole are provided inside the arc-shaped plate.

2. The precast component of the assembled tunnel according to claim 1, characterized in that: Connection holes are provided on the support base, and the wire hole is communicated with the cable trench through the connection holes.

3. The precast component of the prefabricated tunnel according to claim 1, characterized in that: The support base is U-shaped.

4. The precast member of the prefabricated tunnel according to claim 3, characterized in that: A cable trench is formed between the first arm and the second arm of the support base. The top end of the first arm of the support base is fixedly connected to the arc-shaped plate, and the top end of the second arm of the support base extends above the arc-shaped plate.

5. The precast member of the assembled tunnel according to claim 1, characterized in that: The wire hole runs through the arc-shaped plate, and the arc of the wire hole is consistent with the arc of the arc-shaped plate.

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