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A construction method for the lining of a suspended rail trolley

A construction method, a suspended rail technology, is applied in shaft lining, tunnel lining, earthwork drilling and mining, etc. It can solve the problems of high man-hour consumption, slow construction speed, poor quality, etc., and achieves production cost savings, convenient continuous construction, and sustainable construction. good pressure effect

Active Publication Date: 2016-04-20
CHINA RAILWAY ERJU 1ST ENG CO +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the disadvantages of slow construction speed, poor quality, and many working hours in the conventional two-lining buckle arch construction method in the prior art, and provide a suspension-rail trolley lining construction method, especially a construction method in a cave. In the pile method construction, the method of using the suspended rail trolley to carry out the lining construction of the underground excavation tunnel of the subway

Method used

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  • A construction method for the lining of a suspended rail trolley
  • A construction method for the lining of a suspended rail trolley
  • A construction method for the lining of a suspended rail trolley

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Embodiment 1

[0074] Such as figure 1As shown, in the PBA construction method, the initial support of the pilot tunnel is not completely removed, and the unremoved initial support is used as the main support platform for the trolley formwork and movement. The trolley is composed of I-shaped steel formwork + adjustable formwork. The length of the trolley is 7.5m. ) set a span every 0.75m, each trolley has a total of 11 sets of formwork, which are welded on the I20 longitudinal double-split I-beam (or box steel structural steel) at a distance of 0.75m; between each two sets of formwork Steel pipe connection (set 6 for each group of formwork) to ensure its stability; the formwork adopts 1500x750x5mm adjustable steel formwork, the long side is arranged longitudinally along the buckle arch, the formwork is directly fixed with bolts, and the formwork is welded and fixed with the formwork after assembly. There are 25t screw jacks under the vertical double-span I-beam, and the screw jacks are set...

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Abstract

The invention discloses a lining construction method for a suspension rail type trolley. The method comprises the following steps that (1) a primary support is dismounted, 1 / 3 to 1 / 2 of the primary support of a pilot tunnel is dismounted to adapt to the height of the trolley, then the surface of the dismounted portion is leveled, and the dismounted portion of the primary support of the pilot tunnel is a side wall of the primary support of the pilot tunnel; (2) water preventing construction is carried out, and waterproof plates are arranged on the contact faces of a top longitudinal beam, a buckle arch primary support and a designed two-lining buckle arch; (3) steel bars are machined and mounted, and the pre-machined and formed steel bars are transported to an operating face, and are mounted according to design requirements; (4) the trolley is mounted in place, the trolley is lifted, a formwork is lifted to a design position, and concrete pouring is carried out. According to the lining construction method for the suspension rail type trolley, the two-lining buckle arch concrete construction formwork dismounting and shutting time is greatly shortened, the construction period is shortened, and the continuous construction performance is good. Labor cost for splicing and dismounting the formwork and a scaffold is greatly saved. Pouring precision and quality are improved.

Description

technical field [0001] The invention relates to a tunnel lining construction method, in particular to a method for using a suspension rail trolley to carry out the lining construction of a subway underground excavation tunnel. Background technique [0002] Pile Pile Method (PBA) construction Subway underground excavation stations are all constructed by the reverse method. After the construction of the second lining buckle arch is completed, the settlement of the ground surface, pipelines and surrounding buildings above the station is basically stable, and the safety risk is basically eliminated. The second lining buckle can be quickly constructed. Arch concrete can reduce the cumulative settlement of the ground surface, pipelines and surrounding buildings, and also provide a prerequisite for earthwork excavation. [0003] Under the limited space operation environment of the underground excavation station, due to the segmental removal of the initial support of the original up...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/10E21D11/38
Inventor 赵瑞文王湘华毛明林李阳耿开亮苏凌峰瞿国丽杨龙腾李伟简伟张亚磊王清何寿海钟万波杨泉勇
Owner CHINA RAILWAY ERJU 1ST ENG CO
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