摘要
对北京6栋快速路临街建筑物窗外噪声级进行现场实测,道路交通噪声垂向上先增后减的传播规律。通过实测数据分析、理论计算和Cadna/A噪声预测方法相结合对产生该传播规律的原因进行研究。结果表明:道路交通噪声垂向传播规律与其自身特性相关。在一定高度以下,建筑物上噪声传播规律是递增的;达到一定高度后,道路交通噪声符合线声源特性,按照线声源理论衰减。
The vertical propagation regularity, i. e. noise level going up first and then down with height, is verified through measurements of the noise level outside the window on site of six street buildings. For reasoning of the regularly, analysis of measured data, theoretical computation and application of noise prediction software Cadna/A were combined. It is shown that the vertical propagation regularity of road traffic noise correlates with the features of road itself. The noise level increases under certain height, but beyond that height the noise level will attenuate according to line source theory.
出处
《噪声与振动控制》
CSCD
2012年第5期110-113,共4页
Noise and Vibration Control
基金
道路交通噪声监测与评价新方法研究:(2000500301006)
关键词
声学
临街建筑
交通噪声
垂向传播规律
acoustics
street building
road traffic noise prediction
vertical propagation
作者简介
李宪同（1987-），男，山东潍坊人，硕士，助理工程师，研究方向是噪声与振动控制。E—mail：13401099764@139．com
