临街高层建筑道路交通噪声预测及其修正  

Prediction and Correction of Road Traffic Noise on Storefront High-rise Building

作　　者：李娟[1] 陈勇志[1] 檀科明[1] 洪均[1] 

机构地区：[1]重庆大学,重庆400045

出　　处：《城市环境与城市生态》2012年第3期26-30,共5页Urban Environment & Urban Ecology

摘　　要：选取临街高层建筑作为影响点,对现场噪声进行了实测,同时用美国FHWA道路交通噪声预测模式进行了噪声预测,实测值与预测值对比的结果表明,道路交通噪声随高度增加先由小变大再变小,而预测值呈现单一变化。原因为交通噪声垂向分布会受到建筑立面对噪声的反射及散射、车辆车身及路面材质、绿化带植被对噪声的吸收等多方面影响。在给出修正预测模式后,重新对影响点进行预测,修正后预测值与实测值误差可控制在3dB(A)以内,很好地反映出道路交通噪声在垂直方向上的变化趋势。The measured noise data on a storefront high-rise building was compared with the prediction data by the US FHWA model under the assumption of single change. The comparison clearly showed that the road traffic noise initially increased and then decreased with the increase of building height. The difference was caused by the influence of reflection as well as dispersion of building facades, vehicle bodywork of each lane, road surface and roadside vegetation. By modifying the prediction model with the consideration of all the above factors, the error of the prediction value with the actual value was less than 3dB （A） , indicating the modified prediction model could reflect the vertical profiles variation of the road traffic noise correctly.

关 键 词：道路交通噪声 噪声预测模式 建筑立面声反射散射 

分 类 号：X593[环境科学与工程—环境工程]