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Prefabricated sleeve arch for reinforcing and maintaining tunnel lining

A technology for lining and tunneling, applied in the field of prefabricated sleeve arches, can solve the problems of difficult to guarantee the quality of cast-in-place construction, serious overlapping of construction procedures, and increased pressure of local traffic, etc., and achieves the effects of good waterproof effect, simple assembly, and less traffic time.

Inactive Publication Date: 2020-07-24
CHONGQING JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With this construction method, not only the construction process is seriously overlapped, the production capacity is backward, which will increase the pressure on local traffic, but also the quality of cast-in-place construction is difficult to guarantee

Method used

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  • Prefabricated sleeve arch for reinforcing and maintaining tunnel lining
  • Prefabricated sleeve arch for reinforcing and maintaining tunnel lining
  • Prefabricated sleeve arch for reinforcing and maintaining tunnel lining

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 Prefabricated Arches for Tunnel Lining Reinforcement and Maintenance

[0031] This example figure 1 and figure 2 As shown, it includes two first prefabricated lining blocks 1, two concrete pedestals 3 and waterproof cloth 6, the first prefabricated lining block 1 is an arc-shaped sheet structure, and the corresponding central angle of the first prefabricated lining block 1 is 90 degrees Therefore, two first prefabricated lining blocks 1 can be spliced ​​and installed in the circumferential direction to form an arched structure with a semicircular cross section.

[0032] The circumferential end of the concrete pedestal 3 and the first prefabricated lining block 1 is fixedly connected by a socket joint. To the through hole and the bolt 5 on the preset concrete pedestal 3, when installing, insert the circumferential end of the first prefabricated lining block 1 into the groove 4, at this time, the diameter of the bolt 5 and the first prefabricated lining block...

Embodiment 2

[0038] This example figure 1 and Figure 4 As shown, it includes three second prefabricated lining blocks 2, two concrete pedestals 3 and tarpaulin 6, such as Figure 5 As shown, the second prefabricated lining block 2 is an arc-shaped sheet structure, and the corresponding central angle of the second prefabricated lining block 2 is 60 degrees. Therefore, three second prefabricated lining blocks 2 can be spliced ​​and installed in the ring direction so that the section is half Round arched structure.

[0039] The circumferential ends of the concrete pedestal 3 and the second prefabricated lining block 2 arranged at both ends of the arch structure are fixedly connected by a socket joint, and the socket joint includes a groove 4 arranged on the top of the concrete pedestal 3, and a groove 4 arranged on the second The radial through hole on the prefabricated lining block 2 and the bolt 5 preset on the concrete pedestal 3, when installing, insert the circumferential end of the s...

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Abstract

The invention relates to a prefabricated sleeve arch for reinforcing and maintaining a tunnel lining. The prefabricated sleeve arch comprises N prefabricated lining blocks and two concrete pedestals,and N is larger than or equal to 2; the prefabricated lining blocks are arc-shaped sheet bodies, the prefabricated lining blocks can be spliced and installed to form an arch-shaped structure with a semicircular section, the concrete pedestals are arranged at the lower end of the arch-shaped structure, and the concrete pedestals and the annular ends of the prefabricated lining blocks arranged at the two ends of the arch-shaped structure are inserted and fixed. The prefabricated sleeve arch is suitable for the field of tunnel engineering application.

Description

technical field [0001] The invention belongs to the application field of tunnel engineering, and in particular relates to a prefabricated casing arch used for reinforcement and maintenance of tunnel lining. Background technique [0002] During the construction and operation of a two-lane highway tunnel, due to the influence of many factors such as poor geology, groundwater leakage, and improper design and construction, the tunnel will be damaged to varying degrees. Among them, lining cracking is an extremely serious tunnel disease. Lining cracking is not only Seriously affect the stability of the lining structure of the tunnel itself, and if the lining cracks develop to a certain extent, there will be hazards such as peeling of the surface concrete. If the concrete of the tunnel lining peels off to a high-speed car, it will directly lead to a serious safety accident, bringing immeasurable loss. [0003] In the prior art, the lining method is usually used to deal with the cr...

Claims

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Application Information

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IPC IPC(8): E21D11/08E21D11/38
CPCE21D11/08E21D11/083E21D11/38
Inventor 林志杨红运郝理范国宇周江浩谭忠张立媛林昌松
Owner CHONGQING JIAOTONG UNIVERSITY
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