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Tunnel with prefabricated inverted arch modules

A technology for tunnels and pre-embedded sleeves, applied in tunnels, tunnel linings, mining equipment, etc., can solve the problems of many construction procedures, difficult quality control, subsidence, etc., to avoid deformation and settlement, improve stability and construction progress.

Active Publication Date: 2022-05-10
CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the initial support, secondary lining, and backfilling of the inverted arch of the tunnel are all done by tying steel bars on site, and then cast-in-place concrete. This method has many construction procedures, a low degree of mechanization, and difficult quality control. The cast-in-place inverted arch is lagging behind in its formation and stress, which is inconsistent with the design and construction principle of "early closure" of the tunnel. It cannot effectively control the deformation and settlement of the excavated section, and it is easy to cause cracking, deformation, collapse, subsidence, and flooding of the initial support. mud accident

Method used

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  • Tunnel with prefabricated inverted arch modules
  • Tunnel with prefabricated inverted arch modules
  • Tunnel with prefabricated inverted arch modules

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Embodiment Construction

[0027] In order to more clearly understand the above objects, features and advantages of the present disclosure, the solutions of the present disclosure will be further described below. It should be noted that, in the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0028] In the following description, many specific details are set forth in order to fully understand the present disclosure, but the present disclosure can also be implemented in other ways than described here; obviously, the embodiments in the description are only some of the embodiments of the present disclosure, and Not all examples.

[0029] Such as Figure 1 to Figure 8 As shown, the tunnel provided by the present disclosure adopts a prefabricated inverted arch module, including an upper step 1, a lower step 2 and an inverted arch 3, the side walls of the upper step 1 and the lower step 2 are provided with primary support 4,...

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Abstract

The disclosure relates to the technical field of tunnel construction, and discloses a tunnel using prefabricated inverted arch modules. The prefabricated invert module of the tunnel is provided with a pre-embedded sleeve, which extends to the outside of the lateral end of the prefabricated invert module, and the protruding part of the pre-embedded sleeve is provided with a first strip-shaped installation hole. The installation holes are arranged along the horizontal extension, the inner end of the connecting steel frame is provided with the first bolt installation hole, the first bolt installation hole and the first bar-shaped installation hole are connected with fastening bolts, and the lower end of the primary support is provided with a supporting steel plate , the supporting steel plate is arranged along the longitudinal extension, the outer end of the connecting steel frame is provided with a connecting steel plate connected with the supporting steel plate, the supporting steel plate is provided with a second strip-shaped installation hole, the second strip-shaped installation hole is arranged along the vertical extension, and the connecting steel plate is opened There is a second bolt installation hole, and the second bolt installation hole and the second bar-shaped installation hole are connected with fastening bolts; the stability of the tunnel structure and the construction progress are improved.

Description

technical field [0001] The disclosure relates to the technical field of tunnel construction, in particular to a tunnel using prefabricated inverted arch modules. Background technique [0002] With the rapid development of my country's railway construction, railway construction has involved all regions of the country. Railway construction will be limited by the terrain. When encountering mountainous areas, tunnels need to be excavated. Tunnel construction has become an indispensable part of the railway construction process. In actual construction, the tunnel structure usually consists of upper steps, lower steps and inverted arches. At present, the initial support, secondary lining, and backfilling of the inverted arch of the tunnel are all done by tying steel bars on site, and then cast-in-place concrete. This method has many construction procedures, a low degree of mechanization, and difficult quality control. The cast-in-place inverted arch is lagging behind in its forma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/00E21D11/18E21D21/00
CPCE21D11/00E21D11/18E21D21/0026E21D21/0093
Inventor 刘建红王飞靳宝成赵晓勇黄双林陈敬军吉艳雷徐博王煦霖向亮张景何冠男周友权
Owner CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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