Construction method of shaft locking ring for underground excavation construction of subway

Abstract

The present invention relates to the technical field of shaft construction, in particular to a method for constructing shaft lock rings for subway underground excavation construction, comprising the following steps: determining the shape and size of prefabricated lock ring segments; factory prefabrication; and treating the cushion , lift each prefabricated lock ring segment to the designated position of the cushion and connect each prefabricated lock ring segment, and at the same time, use a bonding layer to consolidate the prefabricated lock ring segment and the cushion layer; the connection is integrated Each prefabricated lock ring segment is respectively punched with grouting anchor pipe, and the lock ring is formed. The construction method of the vertical shaft lock ring for subway underground excavation construction of the present invention reduces the number of times of large-scale construction transport vehicles entering the site, reduces construction noise and the duration of noise, avoids long-term maintenance of concrete components, and can Effectively improve the construction period and improve the construction environment. And it is relatively less affected by the construction ban in smog weather, and it improves work efficiency and is more environmentally friendly than traditional crafts.

Description

technical field [0001] The invention relates to the technical field of shaft construction, in particular to a construction method for a shaft locking ring used in subway underground excavation construction. Background technique [0002] The common construction method of reinforced concrete structures in the construction process is to transport wires, plates and profile steel bars to the construction site, and then cut, manufacture, and bind them into shape on site, and then the external sealing formwork is formed by self-mixing or commercial concrete pouring on site. In the old technology, large transport vehicles and construction machinery need to enter and leave the site many times, and there is a need for sufficient steel storage and processing sites on the construction site, and steel workers, formwork workers, and concrete workers to meet the construction needs, and the construction period is relatively long. With the development of society and the improvement of the re...

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Problems solved by technology

[0003] Based on this, it is necessary to provide a subway underground excavation construction method aimed at the problems that the traditional construction method of the shaft lock ring for underground underground excavation construction takes up a lot of space, many labor (types of work), long construction period, not environmentally friendly, and construction is limited by the weather. Construction method using shaft locking ring

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