Radial pushing and pressing fastening type shield segment joint and construction method

A shield segment and fastening technology, which is applied in the field of radial push and fasten shield segment joints and construction, can solve the problems of inconvenience, easy failure and installation of segment joints, and achieve easy replacement and maintenance, The effect of reducing joint waterproof failure and reducing the risk of concrete fracturing

Active Publication Date: 2021-03-12
THE 2ND ENG OF THE 12TH BUREAU GROUP OF CHINA RAILWAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the above-mentioned deficiencies in the prior art, and provides a radial Push fastening type shield segment joint and its construction method

Method used

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  • Radial pushing and pressing fastening type shield segment joint and construction method
  • Radial pushing and pressing fastening type shield segment joint and construction method
  • Radial pushing and pressing fastening type shield segment joint and construction method

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with accompanying drawing:

[0031] Such as figure 1 As shown in , it is a structural schematic diagram of the radial push fastening shield segment joint.

[0032] The radial push fastening type shield segment joint of the present invention includes several connecting grooves 51 arranged symmetrically on the ends of the secondary lining segments 5, and the connecting grooves 51 are connected to the inner side of the tunnel; the connecting grooves 51 The outer arc surface joint 13 and the inner arc surface joint 14 which are parallel to each other are respectively installed inside.

[0033] Such as figure 2 As shown, both the outer arc surface joint 13 and the inner arc surface joint 14 include symmetrically arranged fixing blocks 1 , and the fixing blocks 1 have a rectangular parallelepiped structure. An anchor bar 12 is perforated on the fixing block 1 along a direction perpendicular to the end su...

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Abstract

The invention discloses a radial pushing and pressing fastening type shield segment joint and a construction method. The segment joint comprises a plurality of connecting grooves which are symmetrically formed relative to the end of a secondary lining segment, and the connecting grooves communicate with the faces, connected with each other, of the inner sides of a tunnel; an outer cambered surfacejoint and an inner cambered surface joint which are parallel to each other are installed in the connecting grooves respectively, each of the outer cambered surface joint and the inner cambered surface joint comprises fixing blocks which are symmetrically arranged, anchor bars are arranged on the fixing blocks in the direction perpendicular to the end face of the secondary lining segment in a penetrating mode, and penetrating holes are formed in the fixing blocks in the direction parallel to the end face of the secondary lining segment; and rubber pads are arranged on the opposite end faces ofthe fixing blocks. The construction method comprises the steps of prefabricating the fixing blocks, base plates, bottom plates and inserting plates, and assembling the rubber pads, the anchor bars and the fixing blocks. The problems that in the prior art, under the action of external loads, a segment joint is prone to failure and inconvenient to install can be solved, the structure is simple, reliability is high, the stress concentration effect of the segment joint can be remarkably weakened, and the concrete fracturing risk of the segment joint is reduced.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a radial push fastening type shield segment joint and a construction method. Background technique [0002] The method usually used in existing tunnel construction is the mining method, which includes the traditional mining method, the new Austrian method, the new Italian method and similar construction methods. Reinforced trolleys are used for cast-in-place construction, and the construction efficiency is low. [0003] With the development of construction mechanization and intelligence, the secondary lining reinforcement of tunnels is prefabricated in factories and assembled on site, which can not only improve construction efficiency, but also reduce material waste and environmental pollution. Broad application prospects. [0004] Different from the general circular tunnel section constructed by rock boring machine, the mining method tunnel is generally flat, and the ...

Claims

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Application Information

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IPC IPC(8): E21D11/08
CPCE21D11/083E21D11/086Y02E10/20
Inventor 李自力曹志勇张隽白国锋
Owner THE 2ND ENG OF THE 12TH BUREAU GROUP OF CHINA RAILWAY
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