摘要
提出了城市轨道交通高架线路噪声影响简化预测模型,该模型能够区分高架线路不同噪声源的影响方式,将受声点的总声级分解为轮轨直达声、桥梁结构噪声、混响声和地面辐射声的叠加。给出了每种噪声的预测计算公式。实际线路的预测值与测试值的比较结果表明,所建立的简化预测模型的计算精度可满足城市轨道交通高架线路噪声影响的预测研究要求。
A simplified noise prediction model for urban rail transit elevated line is presented,which could distinguish the influences of different noise sources,classify the total sound level of the acoustic points into a superposition of line direct sound,bridge structural noise,reverberation sound and ground radiated sound,the prediction formula of each noise is give respectively.Compared with the predicted and tested noise values of actual lines,the calculation accuracy of the simplified prediction model model is proven to meet the prediction requirements of rail transit elevated line noise.
作者
王晨
WANG Chen(China Railway Shanghai Design Institute Group Co.,Ltd.,200070,Shanghai,China)
出处
《城市轨道交通研究》
北大核心
2019年第8期153-157,共5页
Urban Mass Transit
关键词
城市轨道交通
高架线路
噪声预测
预测模型
urban rail transit
elevated line
noise prediction
prediction model
