Fabricated tunnel structure and construction method thereof

Abstract

The invention provides a fabricated tunnel structure and a construction method thereof, which can be used for construction of a secondary lining of a newly-built tunnel and repair of an inner sleeve arch of a damaged secondary lining of an existing tunnel, and relates to the field of tunnel construction. The structure comprises a bottom lining, a first arch lining, second arch linings and a third arch lining. The first arch lining, the second arch linings and the third arch lining are all connected with the bottom lining, and the first arch lining is provided with a first matching part. Each second arch lining is provided with a second matching part matched with the first matching part. The third arch lining is provided with a third matching part matched with the second matching part. The method comprises the steps that the first arch lining is connected to the bottom lining; one second arch lining is connected to the bottom lining, and the second matching part is matched with the first matching part; the remaining second arch linings are connected to the bottom lining; and the third arch lining is connected to the bottom lining, and the third matching part is matched with the second matching part. The efficiency and quality of tunnel construction are improved by prefabricating and splicing the lining.

Description

technical field [0001] The present application relates to the field of tunnel construction, in particular, to a prefabricated tunnel structure and a construction method thereof. Background technique [0002] At present, the new Austrian method is used in the construction of mountain tunnels. The new Austrian method has become the most commonly used construction method in the construction of mountain tunnels due to its unique advantages of good geological adaptability, high economic benefits and strong flexibility. The secondary lining is an important part of the tunnel structure of the new Austrian method. The conventional trolley vertical formwork cast-in-place secondary lining construction is prone to defects such as voids behind the wall and secondary lining cracks. It is cumbersome, the construction progress is slow, and the construction efficiency is low. In view of this, considering the prefabricated lining construction technology of factory prefabrication and on-site...

AI Technical Summary

Problems solved by technology

The secondary lining is an important part of the tunnel structure of the new Austrian method. The conventional trolley vertical formwork cast-in-place secondary lining construction is prone to defects such as voids behind the wall and secondary lining cracks. Complicated, slow construction progress, low construction efficiency

The existing tunnel lining assembly technology has the problems of high assembly accuracy requirements, special assembly equipment needs to be developed separately, complex assembly process, and difficult construction

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