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Tunnel rack-free arch frame and installation method thereof

An arch frame installation and arch frame technology, which is applied in tunnels, tunnel linings, shaft equipment and other directions, can solve the problems of long dwell time on the face of the tunnel and hidden safety hazards, so as to reduce construction safety risks, improve construction efficiency, and reduce construction costs. Effect

Pending Publication Date: 2020-09-01
CHINA FIRST HIGHWAY ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a tunnel arch installation method without platform, which solves the potential safety hazard caused by construction personnel staying on the face of the tunnel for a long time without initial support protection

Method used

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  • Tunnel rack-free arch frame and installation method thereof
  • Tunnel rack-free arch frame and installation method thereof

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Embodiment Construction

[0024] As shown in the figure, a tunnel free arch frame includes multiple sets of curved arch body parts and multiple sets of arch diagonal braces, and each group of curved arch body parts includes an upper step arch and a lower step arch. The upper step arch includes a top arch 1N1 at the top of the middle, a middle arch 2N2, N3 on both sides of the top arch 1, and a base arch 3N4, N5 at the bottom of both sides of the middle arch. The step arch includes supporting arches 4N6 and N7 at the bottom of the base arch 3, and two arch diagonal braces 5 are provided symmetrically on both sides of each arched body part, and the arch diagonal braces 5 are respectively arranged on the base On both sides of the arch 3; multiple sets of curved arch-shaped body parts are arranged at intervals along the tunnel depth direction to form an integral tunnel arch protection, and adjacent curved arch-shaped body parts are connected by connecting steel plates; the arch One end of the diagonal brace...

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Abstract

The invention belongs to the technical field of tunnel construction supporting, and particularly discloses a tunnel rack-free arch frame and an installation method thereof. The tunnel rack-free arch frame comprises a plurality of sets of bent arch-shaped body parts and a plurality of sets of arch frame inclined struts, wherein each set of bent arch-shaped body part comprises an upper step arch frame and a lower step arch frame; the upper step arch frame comprises a top arch frame N1 positioned at the top of the middle, middle arch frames N2 and N3 positioned on the two sides of the top arch frame, and base arch frames N4 and N5 positioned at the bottoms of the two sides of the middle arch frames; the lower step arch frame comprises supporting arch frames N6 and N7 positioned at the bottomsof the base arch frames; the two sides of each set of arch-shaped body part are symmetrically provided with two arch frame inclined struts; and the arch frame inclined struts are arranged on the twosides of the base arch frames correspondingly. The tunnel rack-free arch frame has the advantages of being simple in structure and rapid in construction.

Description

Technical field [0001] The invention belongs to the technical field of tunnel construction support, and particularly relates to a tunnel free arch frame and an installation method thereof. Background technique [0002] In the domestic tunnel construction process, when the up-and-down method is adopted, the self-made platform is usually used to install the tunnel arch frame. After the tunnel excavation is completed, the arch frame is first transported to the self-made platform by a loader, and then the operator is on the platform. The frame is assembled in sections on site. When the arch frame is in place, the horizontal position and elevation of the arch frame are manually adjusted. With the existing technology, the construction personnel stay for a long time on the face of the tunnel without initial support protection. The construction progress is slow, the initial support cannot be formed quickly, and there is a greater safety hazard. In addition, the construction personnel per...

Claims

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Application Information

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IPC IPC(8): E21D11/18E21D11/40E21D11/15E21D11/10
CPCE21D11/10E21D11/152E21D11/18E21D11/40
Inventor 车广洲王冬恒姬东东周昭林海张庆祎于春生夏平
Owner CHINA FIRST HIGHWAY ENG
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