Construction method for partition wall lining in tunnel

Abstract

The invention discloses a tunnel compartment wall lining construction method which comprises the following steps of: determining a walking route of a tunnel compartment wall template trolley in a tunnel to be constructed and carrying out a formwork erection operation through the tunnel compartment wall template trolley; carrying out concrete pouring on the tunnel compartment wall template trolley subjected to the formwork erection, controlling pouring time of concrete pouring; and demoulding the tunnel compartment wall template trolley to form a plurality of continuously-arranged compartment walls, which one end part of each of the continuously-arranged compartment walls is separated from a tunnel vault. By adopting the tunnel compartment wall lining construction method disclosed by the embodiment of the invention, the construction quality of the compartment walls 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 construction method for lining a partition wall 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...

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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-bearing system of the vault, but because the structure is not perfect, it cannot meet the needs of fire safety, and there are certain safety hazards

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