Construction method of prefabricated steel cage for rapid tunnel lining

Abstract

The invention discloses an assembled reinforcement cage construction method for fast lining of a tunnel. The method comprises the following steps of 1, according to the digging tunnel diameter of thetunnel, designing the tunnel lining to a state that one tunnel lining unit is arranged every 2 to 4m in the axial direction of the tunnel, and each tunnel lining unit is designed to a state that an bottom building block, a left side part building block, a right side part building block and a top building block are divided in an annular direction and are connected into a ring; 2, prefabricating thebottom building block outside the tunnel, and binding left and right side part building block reinforcement cages and a top building block reinforcement cage; 3, performing tunnel lining construction: laying the bottom building block of the first tunnel lining unit; 4, installing the left and right side part building block reinforcement cages at two sides of the bottom building block in an annular direction, and performing firm lap joint and welding on the annular stress steel bars; and 5, and performing firm lap joint and welding on annular stress steel bars of the top building block reinforcement cage and annular stress steel bars of the connected left and right side part building block reinforcement cages to form a ring. The method has the advantages that the binding and welding efficiency of the tunnel lining reinforcement cage can be effectively improved, and the work environment in the tunnel is improved.

Description

technical field [0001] The invention relates to a construction method for the cast-in-place concrete lining of a tunnel, in particular to a design method for an assembled reinforcement cage in the tunnel lining. Background technique [0002] The construction speed of the tunnel lining has a great influence on the progress and safety of the project, and the speed of the lining construction is often restricted by the binding of the steel cage in the tunnel. At present, the reinforcement cage binding and welding of tunnel lining are mostly carried out in the tunnel. Due to the influence of space and lighting, the efficiency of reinforcement cage binding and welding is very low. In addition, the dust and smoke generated during the binding and welding of a large number of steel bars are also difficult to dissipate in the cave, which seriously endangers the health of the on-site workers. Contents of the invention [0003] To achieve the above object, the present invention takes...

AI Technical Summary

Problems solved by technology

At present, the reinforcement cage binding and welding of tunnel lining are mostly carried out in the tunnel. Due to the influence of space and lighting, the efficiency of reinforcement cage binding and welding is very low.

In addition, the dust and smoke generated during the binding and welding of a large number of steel bars are also difficult to dissipate in the cave, which seriously endangers the health of the on-site staff

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