Shield pipe ring structure and assembling method thereof
A technology of shield pipe and annular structure, which is used in vertical shaft equipment, earthwork drilling, wellbore lining, etc., can solve the problems such as the inability to meet the hydraulic cylinder topping process and the large assembly space requirements of the capping block segment, and achieve a small distance. Effect
Active Publication Date: 2020-05-15
SHANGHAI TUNNEL ENG CO LTD
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Problems solved by technology
[0004] The purpose of the present invention is to overcome the defects of the prior art, provide a shield pipe ring structure and its assembly method, and solve the problem of assembling a wider non-standard pipe ring in a local area of the tunnel in the prior art if the original shield equipment is used. There will be a problem that the jacking stroke of the hydraulic cylinder cannot meet the large assembly space requirements of the capping block segments
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[0039] As a preferred embodiment of the shield pipe ring structure of the present invention, the segment 10 includes:
[0040] A plurality of standard blocks 11 that are spliced together are spliced and fixed to form a ring structure with gaps; and
[0041] Two adjoining blocks 12 arranged on opposite sides of the gap and spliced and fixed to the corresponding standard block 11 are left to form a wedge-shaped opening between the two adjoining blocks 12 .
[0042] Specifically, the standard block has a pair of standard splicing sides parallel to each other, a standard butt joint end face for docking with the installed pipe ring unit, a standard top support end face for hydraulic cylinder support, the standard top support end face and the standard butt joint end face are parallel to each other And perpendicular to the side of the standard splice.
[0043] The adjoining block has an adjoining splicing side for splicing with the standard splicing side, a slope near the wedg...
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The invention relates to a shield pipe ring structure and an assembling method thereof, and the method is used for a non-standard pipe ring with the assembling width greater than that of a standard pipe ring in the standard pipe ring assembling process. The assembling method comprises the steps that hydraulic oil cylinders supported on an assembled standard pipe ring are retracted, thus forming aconstruction space between the assembled standard pipe ring and the hydraulic oil cylinders; pipe pieces of the non-standard pipe ring are assembled in the construction space, and an annular structurewith a wedge port reserved in the top is formed; a top sealing block is classified into a front top sealing block body and a rear top sealing block body; the front top sealing block body is placed ina position, corresponding to the wedge port, in the construction space and abuts against the assembled standard pipe ring, and the retracted hydraulic oil cylinders restore and stretch and abut against the side surface of the front top sealing block body; the hydraulic oil cylinders supported on the annular structure and the side surface of the front top sealing block body are stretched and pushed by a set distance in the tunneling direction; the hydraulic oil cylinder in the front top sealing block body is retracted, so that an assembling space is formed in the position of the front top sealing block body; and the rear top sealing block body is arranged in the assembling space and abuts against the front top sealing block body, and the hydraulic oil cylinder restores and stretches to therear top sealing block body, so that assembling is completed.
Description
technical field [0001] The invention relates to the field of building construction, in particular to a shield pipe ring structure and an assembling method thereof. Background technique [0002] In the construction of underground rail transit projects, the shield tunneling method uses the hydraulic cylinder to push the shield cutter head to cut the soil and excavate forward, and then the hydraulic cylinder at the segment assembly position is temporarily retracted for segment assembly. Usually, each complete pipe ring is composed of several standard block segments, two adjacent block segments and one capping block segment. The top block segment is wedge-shaped, and is inserted into the gap formed by the left and right adjacent segment segments along the tunnel axis direction by the segment assembly machine. [0003] Sometimes it is necessary to open transverse holes on the side wall of the pipe ring due to the setting of communication channels or other engineering requirement...
Claims
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IPC IPC(8): E21D11/08
CPCE21D11/08E21D11/083
Inventor 潘伟强朱雁飞魏林春郭彦刘健陈思慧诸颖王彦杰李昊陈怡严振祥
Owner SHANGHAI TUNNEL ENG CO LTD