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

The technology of a formwork and a tunnel is applied in the field of tunnel inverted arch construction formwork and tunnel inverted arch construction technology, and can solve problems such as long time required for supporting formwork, difficult construction quality assurance, and difficulty in formwork installation.

Active Publication Date: 2016-08-17
CHINA RAILWAY 20 BUREAU GRP CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

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Embodiment Construction

[0082] Such as figure 1 , figure 2 and image 3 As shown, the constructed invert is divided into a middle arch section 1-1 and two side arch sections 1-2 located on the left and right sides of the middle arch section 1-1 along the transverse width direction of the tunnel 4 under construction. The structure of the side arch sections 1-2 is the same and the two are arranged symmetrically. The tunnel invert construction formwork of the present invention includes two side arch sections 1 respectively for the constructed inverted arch. -2 The side formwork for construction, the structure of the two side formwork is the same and the two are arranged symmetrically, and the two side formwork is arranged along the longitudinal direction of the tunnel 4 to be constructed. The side formwork includes an arc-shaped steel formwork for forming the upper surface of the side arch section 1-2, a formwork support frame 3 that is located above the arc-shaped steel formwork 2 and supports the arc-...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/18
CPCE21D11/18
Inventor 翟德平吴应明冀卫青赵鹏涛张云飞李兴加武荣杨军峰刘广庆
Owner CHINA RAILWAY 20 BUREAU GRP CORP LTD
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