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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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI 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, ballastless tracks will be damaged. Significant impact on structural durability, track status, and potential safety hazards
In actual operation, the settlement of the tunnel segment has caused the track bed and the tunnel segment to be separated, which is likely to cause safety accidents

Method used

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

Examples

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Embodiment

[0018] Embodiment: In this embodiment, the rail transit shield tunnel ballast bed connection strengthening device is used to realize the connection strengthening between the rail transit ballast bed and the shield tunnel segment, thereby improving the integrity between the two; especially to ensure that the shield tunnel The connection performance between the tunnel segment and the ballast bed when displacement such as settlement and dislocation occurs, so as to avoid the safety risk caused by the void between the two.

[0019] Such as figure 1 As shown, the rail transit shield tunnel includes a shield tunnel segment 5, and a hand hole for its construction is provided on the shield tunnel segment 5. A reinforced concrete track bed 3 is arranged on the surface of the shield tunnel segment 5, and a prefabricated reinforced concrete sleeper 2 is erected above the reinforced concrete track bed 3, and a steel rail 1 is arranged above the prefabricated reinforced concrete sleeper 2 ...

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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.

Description

technical field [0001] The invention relates to the technical field of rail transit tunnel ballast beds, in particular to a rail transit shield tunnel ballast bed connection strengthening device and an application method thereof. Background technique [0002] With the continuous development of urban rail transit, the operating mileage of urban rail transit continues to increase. At present, because some cities are located in typical soft soil areas, there are generally thick layers of soft clay soils under the ground, which have unfavorable engineering geological characteristics such as high water content, low strength, and high sensitivity. Therefore, rail transit usually requires reinforcement of the base. 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 foundati...

Claims

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Application Information

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IPC IPC(8): E01B1/00E21D11/08
CPCE01B1/00E21D11/08
Inventor 宫寅陆云周萌许琳琪秦艳吴俊郭也清刘富
Owner CHINA RAILWAY SHANGHAI DESIGN INST GRP
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