Tunnel steel temporary inverted arch with rapid assembly and disassembly

A fast and temporary technology, applied in tunnels, tunnel linings, temporary shields, etc., can solve the problems of high noise, danger, and time-consuming installation process during the demolition process, and achieve improved construction safety, good construction environment, and convenient and quick demolition. Effect

Active Publication Date: 2014-01-15
THE FIFTH ENG CO LTD OF CHINA TIESIJU CIVIL ENG GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the demolition of the steel-concrete temporary inverted arch in this structural form, the process is to first use a hand-held pneumatic pick to break the concrete, and then use oxygen welding to cut off the connecting steel bars and steel arches. During this process, the steel cannot be reused.
The problems of this method are: the installation process takes a long time; the demolition process is noisy and dusty, and a large amount of construction waste and scrap steel are generated; oxygen welding and cutting operations in a narrow space such as a tunnel are dangerous.

Method used

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  • Tunnel steel temporary inverted arch with rapid assembly and disassembly
  • Tunnel steel temporary inverted arch with rapid assembly and disassembly
  • Tunnel steel temporary inverted arch with rapid assembly and disassembly

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Embodiment Construction

[0019] see Figure 4 The structural form of the tunnel steel quick disassembly and assembly temporary invert in this embodiment is that each temporary invert is composed of a fixed section 1 in the middle, a movable section 3 located at both ends of the fixed section, and a fixed section 1 connected to the fixed section. Composed of connection section 2 with activity section 3;

[0020] Such as Figure 1a , Figure 1b and Figure 1c As shown, the fixed section 1 is to weld the fixed section reinforced steel plate 12 on the bottom plate of the fixed section "I" steel plate 11 with a width greater than the fixed section "I" steel bottom plate width, and the fixed section reinforced steel plate 12 and the fixed section I-shaped steel Between the webs of 11, along the length direction of the fixed joint, there are fixed joint reinforcing steel bars 13 welded at intervals, and the fixed joint connecting end plates 15 with the fixed joint bolt holes 14 are fixedly welded at both e...

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Abstract

The invention discloses a tunnel steel temporary inverted arch with rapid assembly and disassembly, which is characterized in that each temporary inverted arch arranged is formed by fixed joints positioned in the middle, movable joints positioned at both ends of the fixed joints and connection joints connected between the fixed joints and the movable joints; and the fixed joints, the movable joints and the connection joints are arranged in a split mode. With the tunnel steel temporary inverted arch, tunnel convergence and settlement and deformation can be effectively controlled, the tunnel steel temporary inverted arch can be conveniently and quickly dismantled after completing desired functions and can be reused, other inputs are not increased so that the tunnel construction cost is greatly reduced. Construction waste is not formed, amounts of dust and high decibel noise are not generated during installation and dismantling, excellent construction environment is supplied for the internal construction of the tunnel, and the construction security is improved.

Description

technical field [0001] The invention relates to a temporary support structure after tunnel excavation, more specifically a temporary inverted arch used as temporary support after tunnel excavation. Background technique [0002] In subway engineering and tunnel engineering, a large number of temporary supports are used in the construction of tunnels or caverns with weak surrounding rocks, among which temporary inverted arches are used very frequently. The composition of the commonly used steel-concrete temporary inverted arch includes: steel grid arch frame or section steel arch frame, connecting steel bars between the section steel arch frames and the concrete layer formed by spraying. The construction process is as follows: in the excavated chamber, first install the steel arch frame, weld the steel arch frame and supporting steel, then weld the steel bars between the steel arch frames, and finally spray concrete to form a concrete layer to form a steel structure. Concrete...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/18E21D19/04
Inventor 白伟
Owner THE FIFTH ENG CO LTD OF CHINA TIESIJU CIVIL ENG GRP
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