铁路噪声预测研究是铁路交通噪声与振动控制技术的基础。美国及法国提出的铁路噪声预测公式,在欧美国家中较成熟、有效。对以上两种铁路噪声预测模型进行分析,探讨此预测方法的可行性。参照上述噪声预测模型,结合现场实测值,为我国建立了一种计算普通客运列车最大噪声级LA,m ax的方法;并将计算结果与现场测试结果进行对比,误差在5%以内,证明了本预测方法的可行性。
Railway noise prediction study is the base of vibration and noise mitigation technology.The railway noise prediction models provided by U.S.Department of Transportation Federal Transportation Administration and French are more mature and more effective in European and American countries.This paper has discussed the feasibility of the two methods.Referring to the above models and using the measurement data on site,this paper has produced a model of LA,max.By comparing the results of computation with those of field testing,the feasibilities of the two models can be verified.