A prefabricated station construction method using anchor cables and steel support enclosure structures

Abstract

The invention discloses a construction method of an assembly type subway station adopting an anchor cable and steel support enclosure structure. The construction method comprises the following steps: carrying out construction on enclosure piles, and digging a cast-in-place section foundation pit at the cast-in-place section in the enclosure area of the enclosure piles; manufacturing cast-in-place section bottom plates in the cast-in-place section foundation pit; digging an assembly-section foundation pit at the assembly section, and preserving a space of 14 m as a trolley assembly section forwards in the assembly-section foundation pit from the edge of the cast-in-place section; manufacturing exact leveling strip belts, carrying out splicing construction on bottom plate blocks of the subway station until the length reaches 14 m; assembling a trolley; splicing side wall blocks of the subway station and top sealing blocks of the subway station; continuously splicing the bottom plate blocks of the subway station, removing steel supports, then pushing the trolley to move forwards, and continuously splicing the side wall blocks of the subway station and the top sealing blocks of the subway station. The construction method has the advantages that the construction of the assembly type subway station also can be realized in a complicated geological area, thereby shortening the construction time and guaranteeing the safety of construction.

Description

technical field [0001] The invention relates to the technical field of construction of a prefabricated subway station, in particular to a method for constructing a prefabricated station using anchor cables and steel support enclosure structures. Background technique [0002] Metro prefabricated stations are generally constructed in the center of a bustling city. The main feature is that the station can be quickly assembled after excavation, shortening the exposure time of the foundation pit, speeding up the construction progress, and reducing the time occupied by the road. [0003] The construction method of the traditional subway station assembly trolley is: the air ducts at both ends of the traditional prefabricated station are constructed with concrete cast-in-place structures, the middle is an assembled structure, and the enclosure structure of the cast-in-place section is commonly used enclosure piles + steel supports The enclosure structure of the assembly section is i...

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of the traditional construction method of assembling trolleys in subway stations are: 1) The anchor cable construction has poor adaptability to the ground; 2) When the water content in the ground is high, the friction of the anchor cable will decrease, and the stress loss of the anchor cable will affect the foundation pit. Safety; 3) In the silty clay layer, the connection between the slurry and the formation is poor, and the pulling force of the anchor cable cannot be guaranteed

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