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Vibration reduction type shield duct piece joint structure and shield duct piece vibration reduction method

A technology of shield segment and joint structure, which is applied in earthwork drilling, wellbore lining, tunnel lining, etc., and can solve the problems of affecting the limit of train operation, high replacement cost, and large construction impact

Pending Publication Date: 2021-10-26
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing vibration reduction measures mainly include changing the track structure type, replacing elastic track components, etc., which have achieved a certain vibration reduction effect, but there are problems such as high replacement cost, large construction impact, and affecting the train operating limit.

Method used

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  • Vibration reduction type shield duct piece joint structure and shield duct piece vibration reduction method
  • Vibration reduction type shield duct piece joint structure and shield duct piece vibration reduction method
  • Vibration reduction type shield duct piece joint structure and shield duct piece vibration reduction method

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Embodiment 1

[0039] This implementation example is a vibration-damping bolt kit for a subway segment. Segment 1 has an outer diameter of 6.7m, an inner diameter of 5.9m, and a thickness of 350mm.

[0040] Such as figure 1 Shown is a schematic diagram of the vibration-type segment joint structure of the present invention, a vibration-damping shield segment joint structure, the main material of the segment is a reinforced concrete structure, the concrete label is generally C50, and its elastic modulus is 3.45× 10 4 MPa, Poisson's ratio is 0.2, density is 2420kg / m 3 .

[0041] The annular seam bolt hole 3 and the longitudinal seam bolt hole 5 are located inside the segment 1, and are arc-shaped cavity structures with a hole diameter of 42 mm. The wall thickness is 3mm, the material is high-strength plastic, and the outside is in direct contact with the concrete inside the segment.

[0042] The sealing gasket 6 is located at the joint of two adjacent segments, and has the function of seal...

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Abstract

The invention discloses a vibration reduction type shield duct piece joint structure and a shield duct piece vibration reduction method. The shield duct piece joint comprises a sealing gasket which is arranged at the joint of two adjacent duct pieces and is used for sealing and waterproofing; a energy dissipation pad is arranged between the sealing pad and the duct piece and is a strip-shaped elastic body, one side of the energy dissipation pad is tightly attached to the sealing pad, and the other side of the energy dissipation pad is tightly attached to the duct piece; one end of a strip-shaped energy consumption unit is inserted into the concrete of the duct piece, and the other end of the strip-shaped energy consumption unit is fixedly connected with the energy consumption pad. According to the vibration reduction type shield duct piece joint structure, a vibration reduction structure is designed at the joint, so that the effect of reducing vibration generated by train operation is achieved after duct pieces are assembled, meanwhile, long-term vibration cracking of the duct pieces is prevented, and the durability and safety of a tunnel structure are guaranteed.

Description

technical field [0001] The invention relates to the field of rail transit tunnel structure vibration reduction, and relates to a vibration reduction type shield segment joint structure and a shield segment vibration reduction method. Background technique [0002] With the continuous advancement of urban rail transit construction, the problem of environmental vibration generated by rail transit operation has become increasingly prominent. Under the reciprocating action of the train load, the surrounding track structure such as the tunnel will be affected by vibration. Under the long-term water and soil load and vibration, problems such as cracking may occur that affect its service performance. Vibration is transmitted to the surface through the soil outside the tunnel, and it will also adversely affect the ancient buildings along the rail transit and the living experience of residents. Therefore, it is necessary to take vibration reduction measures for the rail transit struct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/08
CPCE21D11/08E21D11/083
Inventor 金浩
Owner SOUTHEAST UNIV
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