A construction method of an automatic plug-in vibrating device for the second lining concrete of a tunnel

Abstract

The invention provides a construction method for tunnel second lining concrete by using an automatic inserting type vibrating device. The method comprises steps as follows: the automatic inserting type vibrating device is mounted on the back of a second lining trolley steel formwork (10), during mounting, a pneumatic jack (5) is firstly mounted on a steel rack (1), a high-frequency vibrator (4) isconnected with a slide steel plate (8) on the steel rack (1), then the steel rack (1) is welded on the second lining trolley steel formwork (10), and the top of the high-frequency vibrator (4) is flush with the surface of the second lining trolley steel formwork (10) when in the initial position; the pneumatic jack (5) is connected with a gas compressor, the gas compressor is connected with an electric control cabinet, and a drawing switch and a strip-shaped pressure sensing spacer (18) are connected with the electric control cabinet; the electric control cabinet and the gas compressor are started, and automatic inserting type vibrating is performed. The automatic inserting type high-frequency vibrating is realized, and second lining arch concrete cavity and concrete quality are improved;manual input is low, and the risk of working aloft is reduced.

Description

technical field [0001] The invention relates to a concrete vibrating device, in particular to a construction method of an automatic plug-in vibrating device for second lining concrete of a tunnel, belonging to the technical field of tunnel lining construction. Background technique [0002] At present, with the rapid development of high-speed rail in my country, there are more and more tunnels; with the continuous improvement of tunnel lining quality and standardized construction requirements, the quality requirements of tunnel lining concrete are getting higher and higher. [0003] In the traditional tunnel lining process, the tunnel second lining trolley is positioned and then the delivery pump pipe is reinforced and installed. The ready-mixed concrete is sent to each sub-window of the second lining trolley through the concrete drag pump, and each sub-window is poured. Use a hand-held vibrator to vibrate while pouring, and use natural pump pressure to punch the top when pou...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the major safety risks such as the second lining vault concrete of the existing tunnel cannot be manually vibrated, relying entirely on the natural topping method of the concrete delivery pump, which easily leads to the void of the second lining of the vault and the concrete is not dense, etc., to provide a tunnel Construction method of automatic plug-in vibrating device for secondary lining concrete

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