Construction method for pre-positioning water stop belt of setting arc-shaped die of quadratic lining concrete end head

Abstract

The invention discloses a construction method for pre-positioning a water stop belt of a setting arc-shaped die of a quadratic lining concrete end head. The method comprises the steps of welding a steel plate at the end head of a quadratic lining concrete trolley; arranging a U-shaped steel bar loop at the end head of the steel plate by spot welding; mounting one end of an embedded rubber water stop belt into the U-shaped steel bar loop and arranging the other end on the steel plate by reverse pressing to separate the embedded rubber water stop belt embedded into the quadratic lining concrete to be poured from the concrete surface of a poured quadratic lining concrete platform; sealing an end die through a wooden die plate; dismounting the quadratic lining concrete trolley after pouring the quadrate lining concrete so as to separate the U-shaped steel bar loop from the steel plate. According to the construction method for pre-positioning the water stop belt of the setting arc-shaped die of the quadratic lining concrete end head, the setting arc-shaped die of the quadratic lining concrete end head is processed, so that the embedded rubber water stop belt can be embedded into the quadrate lining concrete to be poured of the poured quadratic lining concrete; the setting arc-shaped die is welded on the end head die plate of the quadratic lining trolley; the investment is small, the processing is easy, the construction is simple and convenient, and wide popularization can be carried out.

Description

technical field [0001] The invention relates to the field of tunnel construction, in particular to a method for constructing a back-fixed waterstop of a secondary lining concrete end-shaped arc mold. Background technique [0002] In the construction of the second lining concrete of each slab in railway and highway tunnels, because the traditional waterstop at the end of the second lining of the tunnel is installed and fixed without using special equipment, the waterstop is not centered, offset, and buried in the second lining after the concrete is poured. If there is too much lining concrete or the entire waterstop is not buried in concrete, the waterstop needs to be reworked after the concrete construction is completed. Improper treatment will inevitably cause water seepage hazards and high post-processing costs; therefore, a precise positioning method is required. The construction method of the water stop at the end of the second lining of the tunnel. Contents of the inv...

AI Technical Summary

Problems solved by technology

[0002] In the construction of the second lining concrete of each slab in railway and highway tunnels, because the traditional waterstop at the end of the second lining of the tunnel is installed and fixed without using special equipment, the waterstop is not centered, offset, and buried in the second lining after the concrete is poured. If there is too much lining concrete or the entire waterstop is not buried in concrete, the waterstop needs to be reworked after the concrete construction is completed. Improper treatment will inevitably cause water seepage hazards and high post-processing costs; therefore, a precise positioning method is required. Construction method of water stop belt at the end of the second lining of the tunnel

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