Transition section tunnel structure combined with shield tunnel

Abstract

The invention relates to a transition section tunnel structure combined with a shield tunnel. The transition section tunnel structure comprises a transition channel, an opening and a transition structure, wherein the transition channel is excavated according to a design route of the transition section tunnel, the transition channel is adjacent to the shield tunnel, and the sectional area of the transition channel is gradually reduced from the end close to a working well to the end away from the working well; the opening is formed by partially dismantling the shield tunnel located in the transition channel, the shield tunnel communicates with the transition channel through the opening, and the shield tunnel is partially exposed in the transition channel to form a connecting end; and the transition structure is arranged on the inner wall surface of the transition channel, and the transition structure is fixedly connected with the outer side wall and the end surface of the connecting end. According to the transition section tunnel structure, the section and the span of the excavated transition channel can be reduced, the construction risk is reduced, the construction amount is reduced, the construction progress is improved, and the construction cost is saved.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a cross-section tunnel structure combined with a shield tunnel. Background technique [0002] A crossing line, a switch section, refers to a section of rail used to connect two parallel rails, so that a train running on a certain route can switch to another route. This type of track is usually equipped with one or more sets of point switches. At present, the shield method is often used in the construction of subway projects. The tunnels in the crossing section are usually constructed by the open cut method or the shallow buried buried excavation method, and the crossing track is converted to the main line track. The open cut construction of the crossing section tunnel refers to the crossing section. The station is combined with open and cut. This construction method occupies a large area and has a great impact on ground transportation and the surrounding environment....

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of the prior art, and provide a cross-over section tunnel structure combined with a shield tunnel, so as to solve the problem that the existing cross-section tunnel has a large construction risk and a large amount of construction due to its large cross-section and large span. , The problem of slow construction progress

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