Subway dedicated shield tunneling segment prefabricated construction method

A shield segment and subway technology, applied in underground chambers, shaft linings, tunnel linings, etc., can solve the problems of low turnover efficiency of segment molds and insufficient production speed, and achieve standardized product quality acceptance standards and production efficiency High and productive effect

Active Publication Date: 2009-01-07
GUANGZHOU JISHI CONSTR GRP +1
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AI Technical Summary

Problems solved by technology

However, due to the fact that the production requirements for the segment have not yet formed a unified method, and the production process of each segment manufacturer is not the same, the turnover efficiency of the segment mold is low, and the production speed is not fast enough. In view of this, the subway segment production industry Urgently need a relatively mature production method to guide production and improve production efficiency

Method used

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  • Subway dedicated shield tunneling segment prefabricated construction method

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Embodiment Construction

[0023] First, the production of steel skeleton

[0024] Fabrication and inspection of the steel skeleton: the fabrication of the steel skeleton is carried out in the steel workshop. 2 The arc welding machine performs welding and forming on the fixed-length mold, and then puts the prepared steel skeleton into the standard master form for inspection. After passing the inspection, the steel skeleton is transported from the steel workshop to the segment forming workshop by a forklift.

[0025] 1 The operation should be carried out according to the large-scale drawing of steel bar processing issued by the design engineer, and if there is any change, it should be carried out according to the change notice. The length measurement method and bending size measurement method of the specific shape of the steel bar shall meet the requirements of the drawings.

[0026] 2 Rebar cutting workers should cut and process the steel bars according to the work sheet issued by the foreman of the st...

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Abstract

The present invention relates to a shield segment prefabrication construction method special for subway. The method comprises the steps of manufacturing and installing a reinforcement cage, assembling a mould, stirring, transporting and casting concrete, carring out segment surface, steam maintenance, removing the mould and segment maintenance. The segment is allowed to stand for one hour after the segment surface is finished. Firstly, the segment is covered with a maintaining cover and then is processed for non-pressure steam maintenance. The segment maintenance comprises pool maintenance and spray maintenance. The segment is allowed to stand for 30 to 60 minutes after the mould is removed, the pool maintenance is not less than seven days, and then the segment is transferred to a spray maintenance field. The concrete ring segment prefabrication construction used for an underground large-caliber pipeline shield can also refer to the shield segment prefabrication construction method which has reasonable technical distribution, smooth production, less resource investment, large production capacity, high production efficiency and high automatization degree and is good for forming a segment production line on a large scale.

Description

technical field [0001] The invention relates to the field of civil construction, in particular to a prefabricated construction method for a shield segment of a subway tunnel. Background technique [0002] In recent years, with the continuous expansion of the scale of subway construction, shield construction technology has been more and more widely used in subway construction. Segments are the main concrete prefabricated components of subway shield construction. higher. In the past, the construction accuracy of the subway shield segment could only reach 1mm, but now the finished product is required to reach 0.5mm, so there is an urgent need for a subway shield segment construction method with a high level of precision. [0003] With the continuous increase of segment manufacturers in major cities in China, my country has also formulated technical specifications for subway construction. However, due to the fact that the production requirements for the segment have not yet fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10
Inventor 叶彬彬陈慕贞丁昌银李汉权颜正新冼聪颖柯德辉刘家杰何炳泉
Owner GUANGZHOU JISHI CONSTR GRP
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