Self-propelled inverted arch template construction method

A construction method and self-propelled technology, which is applied in earthwork drilling, shaft lining, tunnel lining, etc., can solve the problems of waste of resources, time-consuming, non-compacting, etc., and achieve the goal of improving construction efficiency, reasonable cycle time, and shortening process time Effect
CN101967985AActive Publication Date: 2011-02-09CHINA RAILWAY TUNNEL GROUP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA RAILWAY TUNNEL GROUP CO LTD
Publication Date
2011-02-09

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Abstract

The invention discloses a self-propelled inverted arch template construction method for a tunnel, which comprises the following construction steps of: setting out a control line for an inverted arch digging section and a longitudinal construction joint according to the design requirement; performing smooth-wall blasting digging on an inverted arch of the tunnel; moving an inverted arch trestle in place; conveying inverted arch stone slag out of the tunnel by using an excavator and a conveying device and abandoning the stone slag in a slag field, and cleaning an inverted arch base; assembling an inverted arch end template; laying steel rails, and moving the inverted arch template to longitudinally move in place per se; starting a hydraulic device to lower the inverted arch template, and supporting the template firmly by using a screw jack; pouring inverted arch concrete; and curing the concrete with equal strength, folding the screw jack, withdrawing a hydraulic cylinder, and releasing a die. The construction method has low cost, is convenient to operate, and improves the construction efficiency; and the longitudinal construction joint is vibrated densely compared with common template construction, and has positive effect of improving the construction quality of tunnel engineering.
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Description

【Technical field】

[0001] The invention relates to a construction method of inverted arch concrete formwork for tunnels and underground engineering, in particular to a self-propelled inverted arch formwork construction method for tunnel inverted arches. 【Background technique】

[0002] Tunnel invert refers to the support under the tunnel pavement. The invert construction is usually poured first in the tunnel lining. After pouring, the formwork trolley can be positioned and supported on the invert concrete, so as to pour the tunnel arch wall concrete.

[0003] At present, there are few examples of integral formwork used in tunnel inverted arch construction in China. Most of them are assembled manually using small steel molds or channel steels, and then use a large number of steel bars to weld, position and reinforce the small steel molds or channel steels; and some If the overall formwork is used for construction, large-scale lifting machines such as excavators and loaders are ...

Claims

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