Fixing structure and pre-embedment construction method for pre-embedded channel for duct piece in subway shield zone

A fixed structure and pre-embedded channel technology, which is applied in the direction of manufacturing tools, auxiliary molding equipment, ceramic molding machines, etc., can solve problems such as tight construction schedules, complicated electromechanical installation, and frequent cross operations

Inactive Publication Date: 2019-01-08
中铁十二局集团山西建筑构件有限公司 +2
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  • Abstract
  • Description
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Problems solved by technology

In order to meet the operational functions and disaster prevention requirements of urban rail transit, more than a dozen pipelines and equipment such as power supply, communication, signal, and fire p

Method used

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  • Fixing structure and pre-embedment construction method for pre-embedded channel for duct piece in subway shield zone
  • Fixing structure and pre-embedment construction method for pre-embedded channel for duct piece in subway shield zone
  • Fixing structure and pre-embedment construction method for pre-embedded channel for duct piece in subway shield zone

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Embodiment approach

[0042] According to one embodiment of the present invention, the fixing structure 2 further includes a lock nut washer, and the positioning nut 6 has a large end with an outer diameter larger than the inner diameter of the installation hole and a small end with an outer diameter equal to the inner diameter of the installation hole. end, the small end of the positioning nut 6 has a threaded cavity for screwing into the one end of the positioning screw 7, and the lock nut washer is used to be clamped between the large end of the positioning nut 6 and the Between the closed surfaces of the arc-shaped channel steel 4, to increase the frictional force between the large end of the positioning nut 6 and the closed surface of the arc-shaped channel steel 4, to prevent the arc-shaped channel steel 4 from The surface is scratched by the positioning nut 6 during fastening, which disperses the pressure of the positioning nut 6 on the sealing surface of the arc-shaped channel steel 4 .

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Abstract

The invention provides a fixing structure for a pre-embedded channel for a duct piece in a subway shield zone. The pre-embedded channel can be fixedly mounted on a duct piece mold bottom arc plate bythe aid of multiple fixing structures; the pre-embedded channel comprises arc-shaped channel steel and multiple anchor rods fixed to the closed end of the arc-shaped channel steel; each fixing structure comprises a positioning nut, a positioning threaded rod and a locking screw; the positioning threaded rods penetrate through corresponding mounting holes in the arc-shaped channel steel and corresponding positioning holes in the duct piece mold bottom arc plate during mounting; each positioning nut penetrates through the corresponding mounting hole in the arc-shaped channel steel to screw and position one end of the corresponding positioning threaded rod on the closed end surface of the arc-shaped channel steel during mounting; and each locking screw is in threaded connection with the otherend of the corresponding positioning threaded rod in a sleeving manner to lock the other end of the corresponding positioning threaded rod on the duct piece mold bottom arc plate during mounting. Theinvention further provides a pre-embedment construction method for the pre-embedded channel for the duct piece in the subway shield zone. Hole drilling on the duct piece is avoided, the integrity ofthe duct piece structure is guaranteed, and the life of the project is prolonged.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a segment pre-embedded channel fixing structure and a pre-embedded construction method in a shield section of a subway. Background technique [0002] With the acceleration of China's urbanization process, the pressure brought by the increase of urban population to urban traffic is becoming more and more obvious. Therefore, urban rail transit has developed rapidly as a new channel to solve urban traffic pressure. In order to meet the operational functions and disaster prevention requirements of urban rail transit, more than a dozen pipelines and equipment such as power supply, communication, signal, and fire protection need to be installed in the interval. Frequent, tight construction schedule, complex mechanical and electrical installation, poor working environment, easy to damage segments and other shortcomings. Contents of the invention [0003] The purpose of th...

Claims

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Application Information

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IPC IPC(8): B28B17/00
CPCB28B17/00
Inventor 王利忠梁焕章李有兵孟海瑞兰集林邵兆胜王学文栗姜凤
Owner 中铁十二局集团山西建筑构件有限公司
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