Study On The Influence And Countermeasures Of Traffice Noise In Qingdao Expressway

With enhancement of economic strength and rapid development of Qingdao Civil economy, road traffic has advanced drastically. A late-model road traffic situation, which is tridimensional and interlacedis , is coming into being. At the same time, road traffic noise pollution emitted on several express way which had been completed and opened to traffic is getting more and more serious . We cannot overlook the influence of traffic noise.Residents living environment surrounding expressway was affected . So assessment and prevention on urban road traffic noise has become a high spot reviews of road environment evaluation in Qingdao. Aim at this phenomenon,this paper proposed"study on the influence and countermeasures of traffic noise in Qingdao expressway".The theories used multiple evaluation indexes and basic theory of related noise propagation and statistics. Combining with monitoring on-the-spot of traffic noise through detail monitoring nine sensitive points selected Yan-an express way on the spot, combining with layout,traffic volume and car type ratio to carry out statistical analysis. The following researches have been completed:1,I had come to the conclusion that the proportions of sensitive points which noise exceeded the standards in the total number of sensitive points have exceeded 25% in the daytime and the all noise exceeded the standards during the night .That is to say the traffic noise pollution is serious along Qingdao expressway.2,The distribution law of noise evaluation indices in the given period of time can be statistical analyzed , educed the temporal distribution law of traffic vehicle flow. The different is significant among all evaluation indices on space.3,The paper analyzed the sound field distribution and the declining trend of traffic noise at either side of the expressway vertically and horizontally on Yan-an road expressway in Qingdao .With increasing height, traffic noise enhances firstly, then reduces.4,The changes of traffic noise is smaller with increase at traffic volume in the daytime, however, the influent of traffic volume during the night is significant.5,The relation between the proportion of large vehicles and all evaluation indices is weak dependence in the daytime and strong dependence during the night. Traffic noise increases in upslope and reduce downhill.6,In view of present situation which that expressway passed old city having a big building density,the prevention measures to reduce the noise are control bicycle noise,optimized transportation organization,sound barrier,soundproofing window and rooms depending on roadside changing their ruction.The studies in this thesis not only provide theoretical methods on traffic noise's prediction,comprehensive treatment of region environment and city layout and construction, but also lay on important foundation for the further development of traffic noise treatment on another road construction project in China.