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Subway car depot testing line composite vibration-isolation barrier

A technology for subway depots and test lines, which is applied in the fields of protection devices, buildings, infrastructure engineering, etc., can solve the problems of the emergence and development of subway depots with a short history, different spatial relationships, and complex spectral components, and achieves a significant vibration isolation effect. , the effect of reducing additional vibration and reducing costs

Active Publication Date: 2015-09-30
GUANGZHOU METRO GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a significant difference between the vibration caused by the train operation of the subway depot test line with superstructure and the ground traffic vibration is that the spatial relationship between the vibration source and the building is different. The vibration of the subway depot test line is located directly below the superstructure. Nearly, the spectrum components are complex
Although the existing vibration reduction measures have a certain vibration reduction effect on buildings adjacent to the track, the history of the emergence and development of subway depots with roof properties is relatively short in my country, and there are not many actual projects, which are still in the exploratory stage. Whether the vibration reduction measures are applicable to the vibration reduction of the test line of the subway depot with a property on the roof remains to be further studied

Method used

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  • Subway car depot testing line composite vibration-isolation barrier
  • Subway car depot testing line composite vibration-isolation barrier
  • Subway car depot testing line composite vibration-isolation barrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, the composite vibration isolation barrier is set up on the test run line of the subway depot with the superstructure property, and the Rayleigh wavelength λ R It is 6.0m.

[0028] The construction steps are as follows:

[0029] A. First determine the size of the composite vibration isolation barrier (D×W1×S) as 4.0m×2.0m×4.5m, of which the size of the physical barrier (D1×W1×S) is 2.0m×2.0m×4.5m, the cable The size of the trench (D2×W2×S) is 1.75m×1.7m×4.5m, the size of the top cover (D3×W1×S) is 0.25m×2.0×4.5m, and the thickness W3 of the cable trench protection wall is 0.15m .

[0030] B. According to the size determined above, excavate an empty trench with a width of 2.0m and a depth of 2.0m at a distance of 4.5m from the center line of the track, and carry out mud protection according to the thickness of the cable trench protection wall of 0.15m to ensure the stability of the soil around the cable trench .

[0031] C, prepare industri...

Embodiment 2

[0039] Such as figure 1 As shown, the composite vibration isolation barrier is set up on the test run line of the subway depot with the superstructure property, and the Rayleigh wavelength λ R It is 7.7m.

[0040] The construction steps are as follows:

[0041] A. First determine the size of the composite vibration isolation barrier (D×W1×S) as 6.0m×2.0m×5.5m, of which the size of the physical barrier (D1×W1×S) is 3.0m×2.0m×5.5m, the cable The size of the trench (D2×W2×S) is 2.75m×1.7m×5.5m, the size of the top cover (D3×W1×S) is 0.25m×2.0×5.5m, and the thickness W3 of the cable trench protection wall is 0.15m .

[0042] B. According to the size determined above, excavate an empty trench with a width of 2.0m and a depth of 3.0m at a distance of 5.5m from the center line of the track, and carry out mud protection according to the thickness of the cable trench protection wall of 0.15m to ensure the stability of the soil around the cable trench .

[0043] C, prepare industri...

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Abstract

The invention discloses a subway car depot testing line composite vibration-isolation barrier. The composite vibration-isolation barrier is arranged in a foundation soil layer under the two sides of a testing line railway ballast. The overall depth D, the overall width W and the distance S between the vertical face, close to the railway ballast, of the inner side of the vibration-isolation barrier and the vertical face where the center line of a testing line rail is located meet the following conditions that D is larger than or equal to 0.5 lambda R, W is larger than or equal to 0.1 lambda R, lambda R is larger than S, and S is larger than or equal to 0.7 lambda R, wherein lambda R is the Rayleigh wavelength of first-layer foundation soil at the bottom of the testing line railway ballast. The vibration-isolation barrier can effectively reduce vibration damage of subway car depot testing line rain operation to a superstructure, and thus reduces influences of vibration of a testing line train on the superstructure.

Description

technical field [0001] The invention relates to a vibration isolation barrier, which belongs to the technical field of underground rail transit, in particular to a composite vibration isolation barrier for a test run line of a subway depot. Background technique [0002] The subway depot is usually used for maintenance and parking of trains, and it is the land with the largest area of ​​land used intensively for subway construction. Property development in its upper space is one of the effective ways to alleviate the shortage of land resources and make up for the gap in subway construction and operating funds. At present, my country's Beijing, Shanghai, Guangzhou, Shenzhen, Hangzhou and other cities have begun to build large-scale depots with superstructure properties. For the depot, the trains on the test line run faster, and the vibration caused by frequent running will be transmitted to the superstructure property through the track, foundation and building structure, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D31/08
Inventor 汪朝晖黄红东邹超陈页开杨玲芝汪益敏何涛陈伟强
Owner GUANGZHOU METRO GRP CO LTD
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