The Urban Road Traffic Noise Impact Factor And Spreading Regularity Analysis

Along with the rapid development of urban construction and the rapid expansion of urban population, road construction gradually entered the sustained and rapid development track, the road is useful for the national economic and social development, but the urban road traffic noise is gradually becoming obstacle to improve the quality of life, prevention and control of noise pollution has become the primary problem to be solved for the highway roads, traffic, environmental protection department.According to the actual measurement results of traffic noise, I based on the urban road traffic noise impact factor and spread rule analysis, combined with the actual situation in our country, and proposed the measures of traffic noise.On the analysis of the influence factors of road traffic noise, separately from three aspects: the speed, road traffic and the width of road, using the linear fitting, statistical analysis methods to analyze these three factors. The conclusion is: the noise of vehicles and speed are approximate linear relationship with the increasing speed, the noise has gradually increasing trend with the increase of traffic noise value; in the initial stage, with the number of cars increased, the noise increase significantly, but this trend is not obvious when he number of cars increased to a certain number; When the number of cars is same and the width of road is different, the road traffic noise is negatively related to the width of the road.Analyzing the noise spreading regularity, separately from the longitudinal and lateral, using statistics and comparative analysis method. The conclusion is: when the noise longitudinal spreading, it increase with the floor raising, and it reduce gradually after six layers; when the noise lateral spreading, it reduce gradually with the distance increasing, after 70m, the noise tends to be fixed value.Combined with the traffic noise impact factor and spread rule analysis, and put forward some traffic noise control method, such as using low noise road, sound insulation, greening, sound insulation window, rational planning etc. In practical applications, we can choose feasible method according to the practical situation.