Tunnel compartment wall lining structure

Abstract

The invention discloses a tunnel compartment wall lining structure, wherein compartment walls are a plurality of continuously-arranged cantilever slab body structures; one end part of each compartment wall is fixed on a tunnel bottom plate through a base wall, the base wall is of a stair landing shape, an included angle is formed between the wall body surface of the base wall and the tunnel bottom plate; the other opposite end part of each compartment wall is separated from a tunnel vault and connected with the tunnel vault through top connecting members, the top connecting members are respectively fixed on the top ends of the compartment walls and the tunnel vault, the top connecting members are mutually enclosed with the top ends of the compartment walls and the tunnel vault to form a gap with an opening end; and a plurality of filling layers are filled in the gap and are used for sealing the gap. By adopting the tunnel compartment wall lining structure disclosed by the embodiment of the invention, the construction quality of the compartment wall can be better ensured, an assembly line work is easily formed, and the advantages of high construction speed, low project investment and construction risk, and the like are achieved.

Description

technical field [0001] The invention relates to the field of tunnel engineering, in particular to a partition wall lining structure in a tunnel. Background technique [0002] At present, the partition wall constructed in the horseshoe-shaped tunnel of the mining method generally adopts the method of segmental mold construction of the middle wall concrete with scaffolding and formwork. , and accidents of scaffolding collapse often occur, and the construction wind is relatively strong. At the same time, the flatness and light sensitivity of the surface of the partition wall constructed in this way are not ideal, and phenomena such as platform misalignment, grout leakage and honeycomb pitting often occur, and the construction quality of the partition wall lining is difficult to guarantee. [0003] The lining design of the partition wall in the prior art is mainly divided into two stress systems. One method is that the middle wall is integrally rigidly connected with the second...

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Problems solved by technology

[0002] At present, the partition wall constructed in the horseshoe-shaped tunnel of the mining method generally adopts the method of segmental mold construction of the mid-wall concrete with scaffolding and formwork. , and accidents of scaffold collapse often occur, and the construction wind is relatively strong

At the same time, the flatness and light sensitivity of the surface of the partition wall constructed in this way are not ideal, and phenomena such as platform misalignment, grout leakage and honeycomb pitting often occur, and the construction quality of the partition wall lining is difficult to guarantee

[0003] The lining design of the partition wall in the prior art is mainly divided into two kinds of stress systems. One method is that the middle wall and the second lining vault of the tunnel are integrally rigidly connected, and the load of the tunnel vault is directly transmitted to the middle wall. In the future, after the construction of the middle wall is completed, the bending moment and shear force distribution of the second lining vault of the tunnel will change greatly, so that the design of the reinforcement needs to consider the two-stage bending moment and shear force envelope, resulting in a relatively high reinforcement ratio , and it is not conducive to the stress of the permanent structure of the second lining of the tunnel vault;

[0004] Another method is currently widely used and recognized by the industry, that is, the middle wall is separated from the vault structure of the second lining of the tunnel, and a certain gap is reserved. Although the structure of the middle partition wall will not change the original second lining of the tunnel The force system of the vault, but due to the imperfect structure, it cannot meet the needs of fire safety, and there are certain safety hazards

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