| The urban roads continue to develop with the high-speed construction of urban, following with the traffic noise became the no neglect factors for normal work and life. The valuation of acoustic environment and the improvement of noise pollution area have turned into the importance of urban construction. Carrying out the effective and rational measures for noise reduction, improving the living acoustic environment, making the influence of urban noise gradually lower, these are the development directions of urban construction. Noise prediction is a most important study of improving the acoustic environment. First of all, doing the prediction and analysis to the noise in key area, drawing a regional noise mapping basic on these data, and then expanding the region to make the coverage areas of noise mapping increasing, these are the usual development step of noise mapping. The study of noise mapping has developed in some countries and region of Europe, but little in our country.This thesis analyses the urban road traffic noise prediction and the noise mapping drawing systematically, which basics on the relevant theoretical basis. By analyzing the domestic and foreign development present situation, testing and collecting the traffic noise, collecting and organizing the synchronous data, cutting out the map of study area, then completing the modeling of this area, calculating in the software of Cadna/A, at last doing the urban road traffic noise prediction and drawing the noise mapping of selected areas. After that, analyzing the prediction compared to the actual measurement, after the amending, to do the noise prediction for other concerned spots.This study proceeds from real condition in China, using the methods of urban road traffic noise prediction and noise mapping, reaches the results of noise prediction. This study is an important guidance for evaluation of urban acoustic environment, analysis of urban road traffic noise influence, improvement of urban acoustic environment. |
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