A tunnel inverted arch construction formwork and tunnel inverted arch construction technology

Abstract

The invention discloses a tunnel inverted arch construction die carrier and a tunnel inverted arch construction process. The die carrier comprises two side die carriers used for respectively constructing two side arch sections of a constructed inverted arch, wherein each side die carrier comprises an arc-shaped steel template for performing shaping construction on the upper surfaces of the side arch section, a template support which is positioned above the arc-shaped steel template and used for supporting the arc-shaped steel template and a front supporting and positioning mechanism positioned at the front side of the arc-shaped steel template. The adopted tunnel inverted arch construction process comprises the following steps of: 1, performing construction of a first inverted arch section, namely installing and positioning the side die carriers, casting inverted arch concrete and detaching a die; 2, performing construction of the other inverted arch section; 3, repeating the step 2 multiple times until the whole construction process of the constructed inverted arch is finished. The tunnel inverted arch construction die carrier is reasonable in design, convenient to realize, and simple and convenient in construction process; in the construction process, the templates are not deviated, the construction effect is god, not only can the tunnel inverted arch construction progress be quickened, but also the construction quality of the constructed and molded inverted arch is easily ensured.

Description

Technical field [0001] The invention belongs to the technical field of tunnel invert construction, in particular to a tunnel invert construction formwork and a tunnel invert construction process. Background technique [0002] The invert is a reverse arched structure set at the bottom of the tunnel to improve the stress conditions of the upper supporting structure. It is one of the main components of the tunnel structure and the foundation of the tunnel structure. On the one hand, the invert should effectively transmit the ground pressure on the upper part of the tunnel to the underground through the side wall structure of the tunnel or the load on the road surface, and it also effectively resists the reaction force from the ground under the tunnel. The invert and the secondary lining of the tunnel constitute the entire tunnel and increase the stability of the tunnel structure. Nowadays, when the tunnel invert is constructed, the combined formwork is usually used for pouring cons...

AI Technical Summary

Problems solved by technology

Nowadays, when constructing tunnel inverts, combined formwork is usually used for pouring construction. Since the tunnel invert is in the reverse arch shape, there are difficulties in supporting and installing the formwork during actual construction, and it takes a long time to support the formwork. The consumption of steel bars for support support is large, the construction cost is high, the concrete pouring is inconvenient, the formwork is easy to shift, and the construction quality is not easy to guarantee, etc.

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