What is the use of the subway construction section?

Subway construction segments are usually shield segments, which are mainly used to resist special loads such as earth pressure.

Shield segment is the innermost barrier of tunnel and the permanent lining structure of shield tunnel. The quality of shield segment is directly related to the overall quality and safety of the tunnel, and affects the waterproof and durability of the tunnel.

High-strength impervious concrete is usually used to make shield segments to ensure reliable bearing capacity and waterproof performance. In production, the finished segment mold can be formed after sealing and pouring concrete.

Extended data:

After the production of subway segments, in order to effectively prevent and avoid segment quality problems and improve segment quality, in addition to the inspection of conventional raw materials and concrete specimens, three-ring horizontal assembly test, segment leak detection test, segment bending performance test and segment pull-out performance test must be done.

High-strength impervious concrete is usually used to make shield segments to ensure reliable bearing capacity and waterproof performance. In production, the finished segment mold can be formed after sealing and pouring concrete. According to the calculation, it takes about 120 minutes to pour a ring segment in the traditional fixed mold production mode. (6 pieces are a ring)

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