Acoustic design method for road noise barrier

A technology of acoustic design and sound barrier, which is applied in the field of road traffic noise control and acoustic design of road sound barriers, and can solve problems such as inaccurate design of sound barriers

Inactive Publication Date: 2009-08-26
SHANGHAI SHIP & SHIPPING RES INST
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Problems solved by technology

[0010] The purpose of the present invention is to propose a new sound barrier design method to solve the inac...

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  • Acoustic design method for road noise barrier
  • Acoustic design method for road noise barrier
  • Acoustic design method for road noise barrier

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Embodiment Construction

[0027] The specific implementation method of the present invention is given below, and the present invention is further described.

[0028] Utilize the acoustic design method of the sound barrier introduced in this technical scheme, and use Visual C++ to write the software. The specific implementation method is explained as follows:

[0029] 1) Import the topographic map where the designed sound barrier is located, one is vector graphics in Cad format, and the other is raster graphics in jpg, bmp, tif and other formats. By importing these two graphics, it can basically deal with the actual situation. All topographic basemaps for .

[0030] 2) After the graphic is imported, the next step is to calibrate the graphic. The so-called calibration is to adjust the graphic scale to be consistent with the actual scale. For raster graphics, you can use the calibration function to complete the calibration by inputting calibration points. For Cad vector graphics, you should Before import...

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Abstract

The invention discloses an acoustic design method for road noise barrier, which comprises the steps of: 1) importing a vector diagram with a Cad format for characterizing the terrains of noise barrier or grid maps with formats such as jpg, bmp, tif, and the like; 2) calibrating the imported graph to achieve the consistence of graphic proportion and actual proportion; 3) combining the actual situation to draw entities such as roads, terrains, houses, forests, grasslands, and the like based on the importing of the graph, and adopting a batch conversion function to finishing the basic work of acoustic modeling by adopting a batch conversion function if the graph is a Cad graph; 4) setting a noise prediction point at a protected sensitive point, calculating a noise value when no barrier exists, and determining an noise-reducing index of the barrier; 5) simulating the noise barrier, adjusting the height and the length of the barrier, and preliminarily calculating a geometrical dimension of the barrier which meets the requirement; and 6) re-calculating the noise-reducing effect of the barrier by combining the geometrical dimension of the sound barrier and simulating the barriers with different structures and sound absorption coefficients until the combination of the geometrical dimension, the structure and the sound absorption coefficient of the sound barrier which meets the requirement is calculated.

Description

technical field [0001] The invention relates to road traffic noise control technology, in particular to an acoustic design method for road sound barriers, which belongs to the field of environmental protection engineering. Background technique [0002] The formation of dense and networked roads in modern cities not only brings convenience to transportation and economic prosperity to modern humans, but also brings us harm from noise pollution. Therefore, with the increasing awareness of human environmental protection, the requirements for reducing urban road noise pollution are getting higher and higher, and the sound barriers that can reduce urban road noise have gradually attracted the attention of related technology industries. [0003] At present, there are many design methods for sound barriers, especially with the popularization and use of computer technology, the design methods in this technical field are increasingly dependent on computers. Internationally well-known...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 李晓东龚辉徐碧华汪祥玉褚国红刘俊宇
Owner SHANGHAI SHIP & SHIPPING RES INST
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