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Suspension rail type construction trolley

A trolley and tunnel construction technology, which is applied to shaft equipment, shaft lining, mining equipment, etc., can solve the problems of slow construction speed, poor quality, and high working hours, and achieve convenient continuous construction, good pressure bearing capacity, and economical production The effect of fees

Active Publication Date: 2014-07-23
CHINA RAILWAY ERJU 1ST ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the disadvantages of slow construction speed, poor quality, and high man-hours in the conventional two-lined buckle arch construction method in the prior art, and provide a tunnel construction trolley, especially a tunnel pile method tunnel secondary construction method. Lining construction trolley

Method used

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  • Suspension rail type construction trolley
  • Suspension rail type construction trolley
  • Suspension rail type construction trolley

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Attached below Figure 1-5 Carry out embodiment 1 explanation.

[0055] like figure 1 As shown, in the PBA construction method, the initial support 8 of the pilot tunnel is not completely removed, and the unremoved initial support is used as the main supporting platform for the trolley formwork and movement. Ensure that there is enough clearance between the trolley and the earthwork 9 at the bottom to facilitate the passage of construction personnel and material transportation. The trolley is composed of I-shaped steel formwork 2 and adjustable formwork 1. The length of the trolley is 7.5m. The extension direction of the lining pouring, that is, the extension direction of the pilot tunnel) is provided with a span every 0.75m, and each trolley has a total of 11 sets of formwork (with figure 1 It is different as shown in ), and welded on the I20 longitudinal double I-beam (or box steel structural steel) at a distance of 0.75m; φ48 steel pipes are used between each two ...

Embodiment 2

[0062] like figure 1 As 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. A span is set every 0.75m, and each trolley has a total of 11 sets of formwork, which are welded to I20 longitudinal double-span I-beams (or box steel structural steel) at a distance of 0.75m; every two sets of formwork are connected by φ48 steel pipes ( Each group of formwork sets 6 pieces) to ensure its stability; the formwork adopts 1500x750x5mm adjustable steel formwork, the long side is set longitudinally along the buckle arch, the formwork is directly fixed with bolts, and the formwork is welded and fixed with the formwork after the formwork is assembled. There are 25t screw jacks under the vertical double-span I-beam, and the ...

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Abstract

The invention discloses a tunnel construction trolley, and relates to a suspension rail type construction trolley which comprises a formwork, mould bases and jacking mechanisms. The mould bases comprise upper arches, middle web members, lower chord pull rods and walking mechanisms. The formwork is fixedly connected with the upper arches. The upper arches are of an arc structure, and the lower chord pull rods are straight rods. Two ends of the upper arches are fixedly connected with two ends of the lower chord pull rods, and the arch structure is formed by the upper arches and the lower chord pull rods. The middle web members are arranged in the middle of the arch structure, and are connected with the upper arches and the lower chord pull rods. The walking mechanisms are arranged at the bottoms of the lower chord pull rods. The jacking mechanisms are arranged at the bottoms of the lower chord pull rods, and are detachably connected with the lower chord pull rods. According to the construction trolley, construction speed can be improved, the construction period is shortened, and continuous construction is facilitated. Labor cost for splicing and dismounting the mould bases can be lowered, rail foundation laying cost can be lowered, and cost can be saved; the problem that pouring precision between adjacent linings cannot be improved and the problem of slab staggering and pulp leakage are solved, and the pouring quality of concrete is guaranteed.

Description

technical field [0001] The invention relates to a tunnel construction trolley, in particular to a "suspension-rail type" trolley for underground excavation tunnel construction of a subway. 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 upper pilot tunnel, the space is narrow,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10
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
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