An arch yielding support structure and construction method

Abstract

The invention discloses an arch yielding support structure and a construction method. The arch yielding support structure includes an outer arch assembly and an inner arch assembly, and the left arches of the outer arch assembly are connected to each other. There is a left yielding segment, and the right yielding segment is connected between the right arches of the outer arch assembly, and the inner arch assembly includes the left half-circle arch part and the right half-circle arch part, and the left half-circle The respective upper ends of the arch part and the right half-circle arch part are connected by the top relief segment, the respective lower ends of the left half-circle arch part and the right half-circle arch part are connected by the bottom relief segment, and the left half-circle arch part The part, the top yield segment, the right half-circle arch part and the bottom yield segment are sequentially connected to form a closed ring structure, the left yield segment, the right yield segment, the top yield segment and the bottom yield segment Respectively the same yielding structure. It aims to solve the technical problems of poor stability and reliability of the yielding support structure and complicated construction technology in the prior art.

Description

technical field [0001] The invention relates to the technical field of tunnel support structures, in particular to an arch yielding support structure and a construction method. Background technique [0002] With the development of tunnel construction projects in the direction of long, large, and deep burial, it is inevitable to pass through unfavorable geology such as high ground stress and active fault zones. When the tunnel structure passes through these unfavorable geology, it often encounters the problem of deformation of broken rock formations. The performance is that the surrounding rock of the tunnel is deformed greatly, the deformation lasts for a long time, the initial support concrete is squeezed out, and the steel arch is distorted, which eventually leads to increased construction risks and difficulties in the treatment of later diseases. [0003] Relevant research has been carried out on the problem of large deformation of soft rock in the prior art. Most of the ...

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Problems solved by technology

[0006] Based on this, the present invention proposes an arch yielding support structure and a construction method, the arch yielding support structure and construction method aim to solve the problems of poor stability and reliability of the yielding support structure in the prior art, Technical problems with complicated construction techniques

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