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《Urban Mass Transit》 2005-01
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Vibration and Noise Strength of the Elastic Supporting Block Track

Liu Yang,Lian Songliang, Liu Jiahua The Key Laboratory of Road and Traffic Eng. ,Tongji Univ. ,200331,Shanghai  
Wheel/rail noise is the main part of urban rail transit noise. Based on domestic and overseas researches on the relation between rail vibration strength and noise, which are calculated through the acceleration data on non-elastic elastic supporting block track structures,this paper evaluates the performance of 2 kinds of ballastless track structures from the aspect of reducing noise and illustrates the relation between vibration strength and noise of the elastic supporting block track. This paper also discusses the theory of the effect of ground factors on sound wave propagating, argues that the ground factors shall not be ignored because their strong influence over the noise strength, and therefore the noise shall be reduced from both noise source propagation paths.
【Fund】: 国家自然科学基金项目(50478111)
【CateGory Index】: U239.5
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