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Method for denoising by sectional bar barrier

A profile and barrier technology, applied in the field of noise reduction, can solve the problems of obstructing the view of the landscape, heavy structural load, and excessive use of materials, and achieve good noise reduction effect, small structural load, and noise reduction

Active Publication Date: 2014-03-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of the existing wall-type noise reduction barriers, such as high height, obstructing the view of the landscape, large structural load, and excessive use of materials, the present invention proposes a noise reduction method using profile barriers

Method used

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  • Method for denoising by sectional bar barrier
  • Method for denoising by sectional bar barrier
  • Method for denoising by sectional bar barrier

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Experimental program
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Effect test

specific Embodiment approach 1

[0030] Specific implementation mode one: combine Figure 1-9 Describe this implementation mode, this implementation mode is realized through the following steps:

[0031] Step 1. Make profile barrier A: place seven profiles at equal intervals in turn, and the outer length T of the seven profiles is 1.8m;

[0032] Step 2. Place the profile barrier A at the sound source B and the receiving point C: place the profile barrier A on the ground parallel to the road in step 1, and between the sound source B and the receiving point C, the starting point of the profile barrier A The distance T1 to the sound source B is 5m~6m, and the distance T2 between the starting point of the profile barrier A and the receiving point C is 5m~6m;

[0033] Step 3. Noise reduction test: Use a sound level meter to perform a noise test on the profile barrier A formed by seven profiles at the receiving point C, and record the sound pressure level at the receiving point C as N1, see figure 1 ; The sound l...

specific Embodiment approach 2

[0043] Specific implementation mode two: combination figure 1 Describe this implementation mode. In this implementation mode, the material of the profile in step 1 is metal material or concrete, and the metal material may be aluminum alloy, copper, iron or zinc. These materials avoid resonance and are durable. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0044] Specific implementation mode three: combination figure 1 This embodiment is described. In this embodiment, the profile is an angle steel type, an L shape, a channel steel type, a dovetail shape or a rectangular shape. Other steps are the same as in the second embodiment.

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Abstract

The invention discloses a method for denoising by a sectional bar barrier, and relates to a denoising method used for solving the problems of high height, landscape sight hindering, big structural load and more used materials of the traditional wall type denoising barrier. The method comprises the following steps of: arranging seven sectional bars at equal intervals in sequence, wherein the outer side length of the seven sectional bars is 1.8m; arranging the sectional bar barrier on a sound source and a receiving point; putting the sectional bar barrier in step one on the ground between the sound source and the receiving point, wherein the sectional bar barrier is parallel to a road, the distance between the starting point of the sectional bar barrier and the sound source is 5-6m, and the distance between the starting point of the sectional bar barrier and the receiving point is 5-6m; carrying out a noise test on the sectional bar barrier formed by the seven sectional bars on the receiving point by a sound level meter; recording the sound pressure level of the receiving point. According to the method for denoising by the sectional bar barrier, which is disclosed by the invention, noise can be lowered by 15dB. The method for denoising by the sectional bar barrier can be used on two sides of the road to be used as a denoising barrier and also can be used for the middle isolation belt of a highway, an earth embankment or a garage roof.

Description

technical field [0001] The invention relates to a noise reduction method, in particular to a noise reduction method using profile barriers. Background technique [0002] Most of the common noise reduction barriers are wall-type, and the height of the wall-type noise reduction barrier is relatively high, generally above 2m. The viewing effect is high, and the structural load is relatively large. In addition, the wall type uses more materials due to its high height. Contents of the invention [0003] In order to solve the problems of the existing wall-type noise reduction barriers, such as high height, obstructing the view of the landscape, large structural load, and excessive use of materials, the invention proposes a noise reduction method using profile barriers. [0004] Described method is realized through the following steps: [0005] Step 1. Make profile barriers: place seven profiles at equal intervals in turn, and the outer length of the seven profiles is 1.8m; ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01F8/00
Inventor 康健
Owner HARBIN INST OF TECH
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