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A Construction Method of Concrete Vibration for Tunnel Vault

A construction method and concrete technology, which is applied in the direction of earthwork drilling, tunnel, tunnel lining, etc., can solve the problems that the construction effect cannot be guaranteed, and it is not suitable for the concrete vibration construction of the vault, so as to achieve convenient operation, high quality and less time-consuming Effect

Active Publication Date: 2021-02-26
CHINA HYDROPOWER ELEVENTH ENG BUREAU ZHENGZHOU CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this invention is not suitable for the vibration construction of vault concrete, and the construction effect cannot be guaranteed

Method used

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  • A Construction Method of Concrete Vibration for Tunnel Vault
  • A Construction Method of Concrete Vibration for Tunnel Vault

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0042] The construction method of the tunnel vault concrete vibration specifically comprises the following steps:

[0043] Step 1, Measure the scribe line:

[0044] Use the leveling and setting-out instrument equipment to draw a line in the center of the vault along the axis of the tunnel, and draw two side lines at 60° on both sides of the line, and use the position between the two side lines as the construction scope of the vault.

[0045] In this embodiment, red paint is sprayed from a spray gun for scribing.

[0046] Step 2, preset bellow 1:

[0047] Within the construction scope of the vault, one Φ80mm corrugated pipe 1 is arranged every 60cm along the tunnel ring direction. The distance between the center of the corrugated pipe 1 and the lining formwork 2 is 50cm. Each corrugated pipe 1 runs through the entire 12m-long warehouse along the tunnel axis direction. , where, every 60cm along the ring direction of the tunnel refers to the data measured by the tape measure ap...

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Abstract

The invention belongs to the technical field of tunnel lining construction, and in particular relates to a construction method for vibrating tunnel vault concrete. The specific steps include: 1. measuring and marking lines; 2. presetting corrugated pipes; 3. installing lining formwork; 4. pouring concrete ; 5. Attached vibrator; 6. Inserted vibrator; 7. Perfusion bellows. The construction method for vibrating the concrete of the tunnel vault in the present invention improves the vibrating quality by adopting the mode of coordinating the attachment type vibrating and the inserting type vibrating.

Description

technical field [0001] The invention belongs to the technical field of tunnel lining construction, in particular to a construction method for vibrating tunnel vault concrete. Background technique [0002] Most hydraulic tunnels use steel formwork trolleys for concrete lining. When concrete is poured, use the attached vibrator that comes with the steel formwork trolley to vibrate outside the formwork. However, with the development of the hydropower industry, the thickness of the concrete lining of the tunnel is increasing. Using an attached vibrator can only vibrate and compact the concrete material close to the formwork, but cannot vibrate and compact all the surrounding concrete material. [0003] With the vigorous development of the hydropower industry, the scale of hydropower stations is getting larger and larger, the diameter of diversion tunnels is getting bigger and bigger, and the thickness of tunnel lining concrete is also gradually increasing. It is not uncommon to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/10
CPCE21D11/10E21D11/102E21D11/105
Inventor 许东升高超马宏亮尹红军刘刚龙蛟刘龙吴彦双王蒙
Owner CHINA HYDROPOWER ELEVENTH ENG BUREAU ZHENGZHOU CO LTD
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