Road sound barrier acoustic design simulation calculation method

Abstract

The invention discloses a road sound barrier acoustic design simulation calculation method, which comprises the following steps of: regarding driving noise on a road as a continuous line sound source, performing most unfavorable noise calculation on a sound source point closest to a sensitive point, calculating a standard exceeding range caused by the most unfavorable noise point, and preliminarily simulating the length and the height of a sound barrier in combination with the range, so as to obtain a sound barrier acoustic design simulation result. And calculating the insertion loss of the sound barrier to obtain a proper length and height combination. When the most unfavorable noise of the sound source point is calculated, traffic volume calculation, noise contribution value calculation, environment reduction, distance attenuation and insertion loss calculation are fully considered, and the calculation precision is high; a pure mathematical calculation mode established on the basis of a table EXCEL is adopted for calculation, digital simulation is achieved by converting traffic factors, environmental factors and space needed by acoustic calculation into digital simulation, the road acoustic calculation threshold is lowered, and the digital calculation vacancy of road acoustic design is filled up.

Description

technical field [0001] The invention relates to an acoustic design simulation calculation method of a road sound barrier, which is mainly applicable to the acoustic calculation required in the design process of the road sound barrier and the length calculation of the noise reduction effect of setting the sound barrier, and belongs to the technical field of road environmental protection engineering. Background technique [0002] With the development of the economy, the improvement of people's living standards and the improvement of road network construction, there are more and more conflicts between traffic noise during road operation and places where noise needs to be controlled, such as residential areas and schools. Attention has also become one of the important indicators for evaluating the rationality of road construction in the later stage. Through the investigation, it was found that most of the early projects had the problem of weak noise reduction design in sensitive...

AI Technical Summary

Problems solved by technology

[0007] The first object of the present invention is to provide a simulation calculation method for the acoustic design of road sound barriers, which provides a new calculation method, which can satisfy the acoustic calculations required for the design of road sound barriers on the one hand, and on the other hand On the one hand, it is relatively simple and easy to operate, which solves the problems of the lack of road acoustic calculation and the cumbersome use of simulation software, and the professional starting point is too high and difficult to operate.

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