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Method for manufacturing shield tunnel longitudinal prestressing concrete lining segment

A technology for lining segment and shield tunnel, which is applied in the engineering field to achieve the effects of convenient construction, high economic benefit and reduction of longitudinal deformation

Active Publication Date: 2014-05-14
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although the longitudinal issues of shield tunnels have attracted attention, so far, in the design and construction, only simple considerations are given from the cross-section and individual areas

Method used

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  • Method for manufacturing shield tunnel longitudinal prestressing concrete lining segment
  • Method for manufacturing shield tunnel longitudinal prestressing concrete lining segment
  • Method for manufacturing shield tunnel longitudinal prestressing concrete lining segment

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0037] The invention discloses a method for preparing a longitudinal prestressed concrete lining segment of a shield tunnel, which comprises the following steps:

[0038] (1) Permanently embed hole-making devices at predetermined positions on the connecting block, standard block, and arch bottom segment of the lining ring in each group of circulation intervals to make tunnels, and the tunnels on adjacent segments are connected vertically to each other to form multiple tunnels. Preset channels running longitudinally through the circulation area;

[0039] (2) The prestressed steel strands are respectively inserted in multiple preset channels, and when a cycle section is assembled, it is stretched and anchored to form an overall structure.

[0040] The preparation method of the longitudinal prestressed concrete lining segment of the shield tunnel...

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Abstract

A method for manufacturing a shield tunnel longitudinal prestressing concrete lining segment comprises the steps of (1) respectively and permanently embedding hole making devices at the preset positions of a connecting block, a standard block and an arch base block of each set of circulating district lining ring to make a hole way, and hole ways on adjacent pipe pieces are correspondingly and longitudinally communicated to form a plurality of preset channels which longitudinally penetrate through the circulating districts; (2) respectively penetrating prestressing steel strands into the preset channels, and when one circulating district is spliced, conducting tension and anchorage to form the whole structure. The method is combined with longitudinal high-strength steel strands, the tunnel overall rigidity is improved, longitudinal deformation is reduced, and longitudinal uneven sedimentation is especially reduced. Precompression is exerted on the concrete lining segment in the longitudinal direction, the stress between lining rings is kept well, stretching and error lifting of the joint between the lining rings are avoided, and water leakage is prevented and controlled.

Description

technical field [0001] The invention belongs to the technical field of engineering, and relates to rail transit and tunnel technologies, in particular to a method for preparing longitudinal prestressed concrete lining segment of a shield tunnel. Background technique [0002] In the construction of urban rail transit, the shield construction method has become the main construction method of subway tunnels in the urban environment due to its obvious technical and economic advantages and the characteristics of little impact on the urban ground environment. In addition, in the construction of various municipal engineering projects such as cross-river highway tunnels and urban sewage treatment systems, shield tunneling is also widely used. [0003] Generally, the common through-seam shield tunnel is connected longitudinally by the lining ring through the longitudinal bolt hand hole; Hand holes assembled. The arch bottom block is located at the bottom of the lining ring; the sta...

Claims

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Application Information

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IPC IPC(8): E21D11/10
Inventor 柳献刘书唐敏张晨光刘鑫陆仁超
Owner TONGJI UNIV
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