Construction method for large-dip-angle tunnel type anchorage secondary lining support

Abstract

The invention discloses a construction method for a large-dip-angle tunnel type anchorage secondary lining support. The construction method comprises the steps that (1) a plurality of secondary lining support piece units are manufactured, and each secondary lining support piece unit is of an arch structure; (2) secondary lining side walls are poured, a plurality of brackets are embedded in the secondary lining side wall on each side, and the brackets are located on the same straight line; a jack is arranged on each bracket, and multiple jacks jointly support a longitudinal adjusting beam arranged in the linear direction; (3) the secondary lining support is installed, specifically, a plurality of secondary lining support piece units are installed in sequence, the two ends of each secondary lining support piece unit are connected with longitudinal adjusting beams on the secondary lining side walls on the two sides of the tunnel respectively, and the secondary lining support piece units are arranged at intervals; and after the secondary lining support piece units on each construction section are installed, the elevations of the secondary lining support piece units are adjusted by adjusting the jacks, and installation of the secondary lining support is completed. According to the construction method, the construction quality is guaranteed, the construction efficiency is improved, and the construction cost is saved.

Description

technical field [0001] The invention relates to the construction technology of tunnel type anchorage, in particular to a construction method for the secondary lining support of tunnel type anchorage with large inclination angle. At present, the construction requirements for the second lining of the tunnel anchor in the construction process. Background technique [0002] Due to the spanning ability and aesthetics of suspension bridges, more and more suspension bridges have been built in my country in recent years. The tunnel anchorage construction of suspension bridges is one of the key control contents of suspension bridge construction. How to speed up the construction progress of tunnel anchors and how to ensure tunnel anchor support Quality has always been a research topic for construction builders. [0003] At present, the construction of the second lining bracket of the tunnel-type anchorage of the domestic suspension bridge is to assemble the steel arch frame with the f...

AI Technical Summary

Problems solved by technology

[0003]At present, the construction of the second lining support of the tunnel type anchorage of the domestic suspension bridge is to assemble the steel arch frame with the full section of the tunnel anchor section in the tunnel, because the working surface in the tunnel is narrow , the weight of the bracket is heavy, it is difficult for large machinery to operate normally in the cave, the height cannot be adjusted accurately, the installation error is large, and the construction is difficult, resulting in uneven thickness of the secondary lining. precision construction method

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