Formwork device and construction method for tunnel water ditch

Abstract

The invention provides a ditch formwork device for a tunnel. The ditch formwork device comprises a first oil cylinder and further comprises an adjusting unit, two oppositely-arranged wedge-shaped formworks and a supporting shaft, the adjusting unit comprises a load bearing beam, an adjusting hand wheel and two oppositely-arranged screws, the adjusting hand wheel is arranged on the load bearing beam which is connected with one end of the first oil cylinder, each screw is mounted between the adjusting hand wheel and one wedge-shaped formwork, and the supporting shaft penetrates the load bearing beam to be connected with the wedge-shaped formworks respectively. The invention further provides a construction method of the ditch formwork device. Compared with the prior art, the ditch formwork device and the construction method thereof have the advantages that construction quality and construction accuracy are high, formwork stripping time is short, and construction period can be shortened effectively.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a tunnel water ditch formwork device and a construction method using the water ditch formwork device. Background technique [0002] Tunnel gutter cable trench is an auxiliary project of tunnel construction, generally the last process of tunnel construction, and construction can only be organized in the middle and late stages of tunnel construction, so there are common problems such as large construction volume and tight construction period. At the same time, there are long-term problems such as poor linearity, many construction joints, and difficult construction joints in the construction of concrete for water trenches and cable trenches. Moreover, since the trenches and cable trenches are located on both sides of the tunnel, their appearance quality will directly affect the overall standardization of tunnel construction. Image, so it is one of the key auxiliary proje...

AI Technical Summary

Problems solved by technology

However, since the formwork of the gutter cable trough is a non-load-bearing plate, and all of them adopt an overall closed U-shaped formwork structure, the demoulding method of lifting the U-shaped formwork vertically must overcome the atmospheric pressure caused by airtightness

When the concrete is not completely solidified or the strength is not enough, lifting the U-shaped plate for demoulding will cause large-scale damage to the concrete structure of the trench cable trench, which will cause the existing construction trolley of the trench cable trench to be affected by the concrete strength factor in the demoulding process time. impact, the demoulding time also needs at least 14 hours

Although the construction time of the existing trench cable trough construction trolley is greatly shortened compared with the traditional construction, the overall construction time is still relatively long

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