Track traffic shield tunnel ballast bed connection reinforcing device and application method thereof

A reinforcement device and rail transit technology, applied in tunnels, tracks, tunnel linings, etc., can solve the problems of durability of ballastless track structure, influence of track state, gap between track bed and tunnel segment, poor adjustment ability of ballastless track, etc. problems, to achieve the effect of being suitable for promotion, improving connection performance and convenient construction

Pending Publication Date: 2021-08-31

CHINA RAILWAY SHANGHAI DESIGN INST GRP

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AI-Extracted Technical Summary

Problems solved by technology

According to operating experience, shield tunnels have uneven settlement in local areas; however, rail transit shield tunnels are generally laid with ballastless tracks, which have poor adjustment capabilities and difficult repairs. Once uneven settlement of the foundation occurs, bal...

Method used

As shown in Figure 1, when in use, the connecting rod 9 of the connection reinforcing device 4 has an end of the hook portion to be hung on the longitudinal steel bar 7 of the ballast bed extending along the line direction, and the other end is passed through the connecting head 10 and the shield hand hole The nut 6 is fixedly connected, so that on the basis of not destroying the shield tunnel segment 5, the shield hand hole nut 6 provided at the hand hole 8 of the shield tunnel segment 5 is beneficial to realize the ballast bed and the shield tunnel segment 5 Strengthen the connection and effectively improve the integrity between the two. Generally speaking, the connector 10 can adopt a joint with an internal thread so as to form a connection and fixation with the shield hand hole nut 6 by threading, even if the coupling strengthening device 4 ...

Abstract

The invention relates to the technical field of track traffic tunnel ballast beds, in particular to a track traffic shield tunnel ballast bed connection reinforcing device and an application method thereof. The connection reinforcing device comprises a connecting rod and a connector, one end of the connecting rod is a hook part matched with a steel bar of a ballast bed, the other end of the connecting rod is connected with the connector, the connector can be fixedly connected with a hand hole of the shield tunnel segment, and reinforced connection between the ballast bed and the shield tunnel segment is achieved. The device has the advantages that reinforced connection between the track bed and the shield tunnel segment of the track traffic is achieved, and the connection performance and integrity between the track bed and the shield tunnel segment are improved on the basis that the tunnel segment structure is not damaged; a certain buffer adjustment amount can be formed between the ballast bed and the shield tunnel segment, the adaptability during operation is high, and potential safety hazards caused by disengagement between the ballast bed and the shield tunnel segment are avoided; and construction is convenient, installation is fast, and popularization is facilitated.

Application Domain

Underground chambersBallastway +2

Technology Topic

RebarShield tunneling +4

Image

Examples

Experimental program(1)

Example Embodiment

[0018] EXAMPLES: In this embodiment, the rail transit shield tunnel tunnel line joint reinforcing device is used to achieve linkage between the Tong Double Tunnel Tubes between the track traffic, thereby increasing the overall performance between the two; especially the guaranteed shield Tunnel tubes occur, such as settling, misconduct, and the coinability between the Tao bed, avoiding security risks between the two due to intermounce.

[0019] like figure 1 As shown, the rail transit shield tunnel includes a shield tunnel sheet 5, and a hand hole used in the shield tunnel tube sheet 5 is provided. A reinforced concrete bed 3 is provided on the surface of the shield tunnel sheet 5, and the upper frame of the reinforced concrete Tu 3 is provided with a prefabricated reinforced concrete sleeper 2, and there is a rail 1 above the prefabricated reinforced concrete sleeper 2 for the rail transit train.

[0020] Combine Figure 1 to 3 As shown, the main body of the linkage reinforcing device 4 of the rail transformer tunnel tunnel in this embodiment includes a connection rod 9 and a connecting head 10, wherein one end of the connecting rod 9 has a hook, the internal shape, size of the hook. The other end of the connecting rod 9 is coupled to the connection head 10 and the connecting rod 9 can be hinged, i.e., the connection rod 9 is rotated, and the connecting head 10 is rotated. The structure is fitted with the structural phase of the shield handle nut 6 at the manif hole 8 of the shield tunnel 5, so that the connecting head 10 can be configured with the shield handset nut 6.

[0021] like figure 1 As shown, in use, the connecting rod 9 of the coupling reinforcing device 4 has one end of the hook, and the longitudinal steel bar 7 extending in the line direction, and the other end is fixed by the connecting head 10 with the shield handle nut 6, thereby Based on the non-destroying the shield tunnel tube 5, the shield manifunction nut 6 facilitated at the hand hole 8 of the shield tunnel piece 5 realizes the strengthening linkage of the Tue Due to the Shield Tunnel Tunnel 5, which is effectively improved. The overall performance between the two. In general, the connecting head 10 can employ a joint having an internal thread to form a connection to the shield manifold 6 by a threaded fit, even when the coupling reinforcing device 4 needs to be replaced, there is no destruction of the shield tunnel tube sheet 5 The structure does not affect the durability of the tunnel tube sheet.

[0022] During the operation period, even if the shield tunnel piece 5 is settled by the soft soil region or other factors, there is a certain buffer adjustment through the hinge structure, and the shield tunnel sheet 5 can still be maintained as a whole; In some cases, under the action of the coupling reinforcing device 4, the reinforced concrete Tao bed 3 can generate a small settlement of the shield tunnel piece 5 to avoid undressing between the two. At the same time, when the tinner direction of the shield tunnel tube 5 occurs in the horizontal direction, the connecting rod 9 and the connecting head 10 generate a certain amplitude rotation by the articulation between the two, and can guarantee the shield tunnel tube sheet 5 and The overall performance between the reinforced concrete Tao.

[0023] This embodiment includes the following steps:

[0024] 1) The hook portion of the connecting rod 9 of the coupling reinforcing device 4 is hanging on the longitudinal steel bar 7 of the Tue Due, and the connecting head 10 of the coupling reinforcing device 4 and the shield of the shield tunnel tube sheet are connected to the shield. The mounting position of the coupling reinforced device 4 is located in the range of the reinforced concrete row bed 3 in the direction of the shield tunnel tube sheet 5, such as figure 2 The four handles 8 shown are within the range of the reinforced concrete Tao 3, and therefore, the coupling reinforcing device 4 can be provided at the position of the four handles 8.

[0025] When the coupling reinforcing device 4 is mounted, the mounting angle position of the connecting rod 9 and the hinged tip of the connecting head 10 can be utilized. For example, first connect the connecting head 10 to the shield manifile nut 6, and then rotate the hook of the connecting rod 9 to the corresponding road bed longitudinally, improve the construction capacity to improve construction efficiency. .

[0026] 2) After the installation of the coupling reinforcing device 4, the pouring of the concrete portion of the reinforced concrete Tao Tu 3 is completed, and the reinforcing coupling between the reinforced concrete Tao 3 and the shield tunnel tube sheet 5 is realized.

[0027] In order to further improve the integrality between the reinforced concrete Tao Tu 3 and the shield tunnel tube sheet 5, the hook portion of the connecting rod 9 and the longitudinal reinforcing bar 7 of the cable 9 can be configured to be connected by a means of binding or welding.

[0028] like image 3 As shown, the end set on the end portion of the hook portion of the connecting rod 9 is provided as an insulating layer to achieve relative insulation between the reinforced concrete Tu 3 and the shield tunnel sheet 5. Similarly, the insulation performance can also be further improved by providing an insulating sleeve or other components between the connecting head 10 and the shield manifile nut 6.

[0029] In particular, the connection rod 9 and the connecting head 10 may have sufficient strength and rigidity with a 304 stainless steel material or other integral casting material.

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Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

improve link performance
improve integrity

Method and apparatus to improve CDMA reverse link performance

ActiveUS20050073975A1improve link performanceimprove reception

Owner:TELEFON AB LM ERICSSON (PUBL)

Track traffic shield tunnel ballast bed connection reinforcing device and application method thereof

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

PUM

Description & Claims & Application Information

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