A subway tunnel vibration and noise reduction structure and its construction method

A technology for vibration reduction and noise reduction and tunnel construction. It is used in tunnels, tunnel linings, and earth-moving drilling and mining. It can solve problems such as affecting people's normal work and life, reducing the service life of building structures, etc., to achieve good durability and ensure vibration reduction. Noise effect, effect of improving vibration reduction effect and noise reduction efficiency

Inactive Publication Date: 2020-11-10
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that in the prior art, the vibration and noise generated by the train passing through the tunnel structure under the building will be transmitted to the building structure through the track structure, tunnel structure, surrounding soil layer and other media, reducing the service life of the building structure and affecting people's normal work and life. In order to solve the defects of the subway tunnel, a vibration and noise reduction structure and construction method for subway tunnels are proposed

Method used

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  • A subway tunnel vibration and noise reduction structure and its construction method

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Embodiment 1

[0030] A subway tunnel vibration and noise reduction structure, please refer to figure 1 , comprising a tunnel wall 2, a support column 8, an elastic backing plate 4, a ballastless track plate 5, a sleeper 6, and a rail 7; the bottom of the tunnel wall 2 is provided with a bayonet, and one end of the support column 8 passes through the bayonet and is connected to the Inside the tunnel wall 2; a rectangular ring structure 9 is connected above the support column 8, and an elastic backing plate 4 is connected between the rectangular ring structure 9 and the support column 8; the ballastless track plate 5, sleeper 6 and rail 7 are connected to the inner bottom of rectangular ring structure 9, wherein rail 7, sleeper 6 and ballastless track slab 5 are connected sequentially from top to bottom, and said ballastless track slab 5 is connected to the rectangular ring shape by elastic backing plate 4. The inner bottom wall of the structure 9 is connected.

[0031] In this embodiment, t...

Embodiment 2

[0046] A subway tunnel vibration and noise reduction structure and its construction method, in the actual construction process, specifically include the following steps:

[0047] 1) In the design of the subway line, judge the section where vibration and noise reduction structures need to be designed, and construct the departure shaft and arrival shaft;

[0048] 2) Use the large-diameter shield method for subway tunnel construction, choose a shield machine with a diameter of 10m, and choose a circular structure for the cross section. The tunnel segment structure used in construction is reinforced concrete segment;

[0049] 3) After the construction of the subway tunnel is completed, the specific position where the bridge support structure intersects with the tunnel is determined, and the tunnel segment is opened. The size of the cross-sectional area of ​​the opening is 0.6m×0.6m, and the pile hole is drilled at the opening position by using the pile-exploding method, and the d...

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Abstract

The invention discloses a subway tunnel vibration and noise reduction structure and a construction method. The subway tunnel vibration and noise reduction structure is mainly composed of structural types and materials such as a rectangular circular structure, a vacuum space, vibration reduction rubber, a bridge type supporting structure, a rail, a ballast-less track board and an elastic backing board. According to the subway tunnel vibration and noise reduction structure, the elastic backing board is arranged between the ballast-less track board and the bridge type supporting structure, the vibration reduction rubber is arranged between the bridge type supporting structure and a subway tunnel wall, a transmission route of vibration waves induced during running of a subway train is cut off,and the capacity of weakening diffusion of vibration towards an outside stratum of a tunnel structure is achieved; air in the rectangular structure is extracted to enable the rectangular structure tobecome a vacuum structure gradually, so that a function of isolation between noise and the outside stratum is realized, and the influence of running of the subway train on the outside environment isreduced; and meanwhile, the preparation method of the subway tunnel vibration and noise reduction structure is easy and convenient, the construction technology is simple, the cost is low, and the subway tunnel vibration and noise reduction structure has good application effects and popularization value.

Description

technical field [0001] The invention relates to the technical field of subway vibration and noise reduction, and more specifically, to a subway tunnel vibration and noise reduction structure and construction method. Background technique [0002] At present, more and more cities have built a large number of urban rail transit systems in order to alleviate traffic congestion and save land resources. However, due to the saturation of the existing building density in the city, the lower space left for rail transit construction is narrow, resulting in the inevitable spatial overlap with existing buildings in the process of urban rail transit construction. After operation, the vibration and noise generated by the train passing through the tunnel structure under the building will be transmitted to the building structure through the track structure, tunnel structure, surrounding soil layer and other media, reducing the service life of the building structure and affecting people's no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/38E21D11/00
CPCE21D11/003E21D11/38
Inventor 邹超杨依鹏
Owner GUANGDONG UNIV OF TECH
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