Vibration damping protection tunnel with constrained damping structure and construction method of tunnel

A technology of constrained damping and construction methods, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve hidden dangers in tunnel operation safety, affect engineering quality and other issues, solve waterproof and leakage problems, improve durability, and ensure driving and personnel safety

Inactive Publication Date: 2012-09-19
青岛市地下铁道公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These will become the direct cause of water leakage in the tunnel lining, seriously

Method used

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  • Vibration damping protection tunnel with constrained damping structure and construction method of tunnel
  • Vibration damping protection tunnel with constrained damping structure and construction method of tunnel
  • Vibration damping protection tunnel with constrained damping structure and construction method of tunnel

Examples

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Embodiment Construction

[0018] Such as figure 1 , figure 2 As shown, the concrete layer 1 for the primary support of the tunnel is included, the viscoelastic damping layer 3 is laid on the concrete layer 1 for the initial support of the tunnel, and the secondary lining concrete layer 2 is provided on the surface of the viscoelastic damping layer 3 .

[0019] The thickness ratio of the viscoelastic damping layer 3 to the secondary lining concrete layer 2 is 1:15. The viscoelastic damping material used in the viscoelastic damping layer 3 has a stiffness modulus between 2-20 MPa, a temperature range of -10°C-50°C with a loss factor above 0.5, and a frequency range of 0-300Hz .

[0020] Method steps of the present invention are as follows:

[0021] (1) First of all, after the initial support of the tunnel is completed, the surface treatment of the concrete layer 1 of the initial support of the tunnel is carried out. The specific method is: firstly, the concrete surface is mechanically treated to remo...

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Abstract

The invention relates to an underground railway tunnel structure and specifically relates to a vibration damping and noise reduction protection tunnel spraying a damping constrained structure and a construction method thereof.. The vibration damping protection tunnel with the constrained damping structure, disclosed by the invention, comprises a tunnel preliminary supporting concrete layer, wherein a viscoelastic damping layer is laid on the tunnel preliminary supporting concrete layer, and a secondary lining concrete layer is arranged on the surface of the viscoelastic damping layer. In the vibration damping protection tunnel disclosed by the invention, the vibration damping and protection structure integrates multiple functions and takes damping, vibration damping and noise reduction functions as main functions; and simultaneously, a waterproof function, an anti-corrosion function, an insulation function and other functions are further provided, waterproofness and leakage problems of the tunnel are solved, the durability of a whole underground structure is improved, stray current in a subway is isolated and the safety of traffic and staff can be ensured.

Description

technical field [0001] The invention relates to an underground railway tunnel structure, in particular to a vibration-reduction and noise-reduction protection tunnel with a spray-painted damping restraint structure and a construction method of the tunnel. Background technique [0002] With the development of the national economy, the increase of urban population, the rapid increase of motor vehicles and the change of urban layout, the traffic problem is becoming more and more prominent. The development of urban rail is an important measure to solve this problem. However, the vibration and noise problems caused by rail transit have increasingly become prominent factors that pollute the urban environment. In particular, as the subway is used as a post-construction infrastructure, and at the same time it must meet the traffic problems in densely populated areas of the city, the above-ground construction is affected by various factors and gradually develops underground. It is g...

Claims

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Application Information

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IPC IPC(8): E21D11/10E21D11/38
Inventor 黄舰黄微波吕平吴学锋盖盼盼杨林
Owner 青岛市地下铁道公司
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