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A shield tunnel flexible segment

A technology of shield tunnel and segment, which is applied in the direction of tunnel, tunnel lining, shaft equipment, etc., to achieve the effect of convenient on-site construction, simple structure and guaranteed stability

Active Publication Date: 2018-12-25
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved by the present invention is that the shield tunnel can absorb the axial deformation of the sharp change of the stratum or the active fault during the earthquake, and can bear the pressure generated by the axial deformation, and ensure the sealing. In order to solve the above problems, the present invention The purpose of the invention is to provide a flexible segment of a shield tunnel, which can allow a certain amount of axial deformation of the shield tunnel while maintaining high rigidity, self-stability and waterproofness

Method used

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  • A shield tunnel flexible segment
  • A shield tunnel flexible segment
  • A shield tunnel flexible segment

Examples

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Embodiment

[0030] The flexible segment of the shield tunnel described in this embodiment is an implementation used in a shield tunnel with a diameter of Ф4250mm. The flexible segment of the shield tunnel is as follows figure 1 and figure 2 As shown, it includes: the flexible segment body A20 and the flexible segment body B21, the flexible segment body A20 and the flexible segment body B21 are connected along the longitudinal direction of the shield tunnel, the flexible segment body A20 and the flexible segment body The B21 is connected and transmitted through dowel rods. The flexible segment body A20 and the flexible segment body B21 are composed of a steel frame welded by steel plates on the outside and concrete poured on the inside. The flexible segment main body A20 and the flexible segment main body B21 are connected to adjacent ordinary segments through bent bolts. The thickness and radius of curvature of the flexible segment main body A20 or the flexible segment main body B21 ar...

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Abstract

The invention relates to a flexible segment for a shield tunnel, and belongs to the technical field of shield tunnel shock resistance. The flexible segment comprises a flexible segment main body A and a flexible segment main body B, wherein connection and force transferring are carried out between the flexible segment main body A and the flexible segment main body B through a force transferring bar; and a hermetic seal structure is arranged between the flexible segment main body A and the flexible segment main body B. When an earthquake happens, and an axial deformation in a limiting design value happens on the shield tunnel segment, the stability of the shield tunnel segment can be guaranteed by means of the flexible segment main body structure, the sealing performance during deformation can be guaranteed by means of the hermetic seal structure, and the force transferring bar can be used for transferring earthquake force to an adjacent segment to ensure the whole stability of the shield tunnel. The flexible segment for a shield tunnel has a simple structure, can be processed in factories and assembled on the spot, and is convenient for field construction.

Description

technical field [0001] The invention relates to a flexible segment of a shield tunnel, which belongs to the field of shield tunnel anti-seismic technology. Background technique [0002] Because the unit volume mass of the shield tunnel itself is much smaller than that of the surrounding soil, the inertial force of the earthquake acting on the tunnel section is smaller than the inertial force acting on the surrounding soil. When an earthquake occurs, the tunnel vibrates with the surrounding soil, and the deformation must be coordinated with the relative displacement and deformation of the surrounding soil. The shield tunnel uses bolts to assemble the prefabricated segments together. The overall structure is flexible and has a certain deformation capacity in the longitudinal direction. cracks and tunnel disasters, the deformation capacity of the tunnel junction alone cannot meet the deformation requirements of special sections. Contents of the invention [0003] The proble...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/38
CPCE21D11/383
Inventor 马晓成杨威左雷彬李国辉黄丽杨春玲刘艳东刘思萌
Owner BC P INC CHINA NAT PETROLEUM CORP