Construction method of a tunnel secondary lining concrete vibrating system

Abstract

The invention provides a construction method of a tunnel second lining concrete vibrating system. The construction method comprises the steps: 1, automatic-inserting-type vibrating devices (1) are arranged at the arch top and on the two sides of an arch part of a second lining trolley in the longitudinal direction; high-frequency pneumatic vibrators (2) are arranged on the two sides of the back face of a second lining trolley steel mold plate (4), wherein each side is annularly provided with the corresponding three rows of high-frequency pneumatic vibrators (2); 2, a pneumatic jack (8) and a gas compressor (3) are connected, the high-frequency pneumatic vibrators (2) and the gas compressor (3) are connected, and the gas compressor, a pneumatic switch solenoid valve (17), a drawing switch and a strip-shaped pressure induction spacer (18) are electrically connected with an electric control box; and 3, the electric control box and the gas compressor (3) are started, the high-frequency pneumatic vibrators (2) are utilized for pneumatic vibrating, and the automatic-inserting-type vibrating devices (1) are utilized for inserting-type automatic vibrating. Automatic-inserting-type vibrating of tunnel second lining concrete is achieved, and the problems that the deep and thick concrete is not vibrated in place, and the concrete is not compact are solved.

Description

technical field [0001] The invention relates to a construction method, in particular to a construction method of a tunnel secondary lining concrete vibrating system, and belongs 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 ground pump, and each sub-window is poured. When pouring, use a hand-held vibrator to vibrate, and when pouring a vault, use an electric flat-plate attached vibrator to vibrate....

AI Technical Summary

Problems solved by technology

However, due to the dense reinforcement of the second-lined vault, the vault concrete cannot be manually vibrated, so there are problems such as the inability to ensure that the vault concrete is compact and the distribution of the second-lined vault concrete is uneven, and there are huge risks in quality and safety. As a result, the concrete strength of the tunnel lining vault is uneven, the concrete is not dense and the cavity is empty, so the traditional tunnel lining technology can no longer meet the construction needs

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