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Shield tunnel segment capable of being reinforced and preparing method thereof

A shield tunnel segment and segment technology, which is used in reinforcement molding, manufacturing tools, ceramic molding machines, etc., can solve the problems of poor durability and fire resistance of structural adhesives, decreased stiffness and bearing capacity, and heavy ring steel plates. Achieve the effect of improving compressive strength, tensile strength, and stress strength

Pending Publication Date: 2020-01-10
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ring-shaped steel plate itself is thick and difficult to construct
Moreover, these reinforcement technologies all use structural adhesives to paste reinforcement materials to reinforce the tunnel. The bonding interface is the weak surface of the structure. In addition, the durability and fire resistance of structural adhesives are poor, and the bonding is prone to failure; after the bonding fails, the structure will become brittle. Destruction, rapid decrease in stiffness and bearing capacity, short reinforcement life

Method used

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  • Shield tunnel segment capable of being reinforced and preparing method thereof
  • Shield tunnel segment capable of being reinforced and preparing method thereof
  • Shield tunnel segment capable of being reinforced and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0030] Figure 1-3 It is shown that a specific implementation of this embodiment is: a shield tunnel segment that can be reinforced, including an arc-shaped segment, and a steel mesh 1 embedded in the segment, characterized in that: the tube The inner arc side of the sheet is also pre-embedded with a bolted steel plate 2, and a bolted connector 3 is fixed, and the end of the bolted connector 3 is flush with the inner arc surface of the segment; the outer arc surface of the bolted steel plate 2 is fixed with The connecting steel bar 4 is bound on the reinforcing bar mesh 1 .

[0031] The bolted connectors 3 in this example are welded or threaded on the inner arc surface of the bolted steel plate 2; and the bolted connectors 3 are distributed around the inner arc surface of the bolted steel plate 2 in a double-row dislocation arrangement.

[0032] The bolt connection part 3 of this example is provided with an internally threaded connection hole, and a rubber plug 3a is plugged ...

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PUM

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Abstract

The invention discloses a shield tunnel segment capable of being reinforced. The segment comprises an arc segment body, and a reinforcing mesh (1) embedded in the segment body and the segment is characterized in that a bolt connecting steel plate (2) is embedded on the inner arc side of the segment body, a bolt connecting part (3) is fixed to the inner arc face of the bolt connecting steel plate (2), the end of the bolt connecting part (3) is flush with the inner arc face of the segment body, the outer arc face of the bolt connecting steel plate (2) is fixedly provided with a connecting reinforcement (4), and the connecting reinforcement (4) is bound on the reinforcing mesh (1). A tunnel built through the segment is convenient to reinforce in the later period, after reinforcing, the tensile strength and the rigidity of a tunnel structure can be effectively improved, the reinforcing effect is good, and the reinforcing service life is long.

Description

technical field [0001] The invention relates to a shield tunnel segment and a preparation method thereof. Background technique [0002] The shield tunnel lining structure is formed by splicing a plurality of arc-shaped segments circumferentially into an annular segment ring, and then splicing the segment rings in depth. During the construction and operation of the shield tunnel lining structure, affected by factors such as engineering hydrogeological conditions, structural mechanical properties, material durability, and surrounding environment, segmental lining structure deformation, water leakage, and segmental cracking will inevitably occur. , Concrete spalling and even structural instability and other diseases of different degrees. These diseases have greatly shortened the service life of the tunnel and seriously affected the safety of tunnel construction and operation. Therefore, the research and treatment of tunnel diseases have always been a hot issue in the field of ...

Claims

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Application Information

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IPC IPC(8): B28B21/56B28B21/04
CPCB28B21/04B28B21/56
Inventor 王士民陈兵王先明
Owner SOUTHWEST JIAOTONG UNIV
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