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Influence of traffic noise from local and surrounding areas on high-rise buildings
Applied Acoustics ( IF 3.4 ) Pub Date : 2020-09-01 , DOI: 10.1016/j.apacoust.2020.107362
R. Benocci , A. Bisceglie , F. Angelini , G. Zambon

Abstract Acoustic maps are, generally, calculated according to noise directives that evaluate the noise exposure levels of a population at a reference height of 4 m to provide values that correspond to the first floors of buildings. However, in large cities, the requirements for high-density housing, such as high-rise apartment buildings, make this evaluation incomplete. In this paper, we study noise propagation at different heights in the context of a medium-sized road network, such as that of Milan, Italy. Considering the “vertical housing” development trend for buildings in large cities, evaluation of the exposure of the population to noise at different heights becomes crucial, as residents might be subject to noise annoyances despite their distance from the source. Here, we present the results of noise measurements at three sites at different heights to observe the pattern of the noise profiles. A three-dimensional acoustic simulation reproducing the entire building structure of Milan was developed to estimate the noise levels generated by vehicle traffic sources at different heights. The predicted noise levels were compared with the measured data. In addition, over the entire urban area of Milan, we selected buildings higher than 50 m to analyse the variation of the noise level exposure at different heights. In this way, it could be possible to study this particular behaviour over a large scale. The results of this investigation may help plan and design new high-rise buildings to reduce the exposure of building dwellers to noise.

中文翻译:

局部及周边交通噪声对高层建筑的影响

摘要 声学地图通常根据噪声指令计算,该指令评估参考高度 4 m 处人口的噪声暴露水平,以提供与建筑物首层相对应的值。但是,在大城市,对高层住宅等高密度住宅的要求,使得这个评价不完整。在本文中,我们研究了在中等规模道路网络(例如意大利米兰)的背景下不同高度的噪声传播。考虑到大城市建筑物的“垂直住宅”发展趋势,评估人口在不同高度的噪音暴露程度变得至关重要,因为居民尽管距离源头很远,但仍可能受到噪音困扰。这里,我们展示了三个地点不同高度的噪声测量结果,以观察噪声分布的模式。开发了再现米兰整个建筑结构的三维声学模拟,以估计不同高度的车辆交通源产生的噪音水平。将预测的噪声水平与测量数据进行比较。此外,在整个米兰市区,我们选取​​了高于 50 m 的建筑物来分析不同高度下噪声暴露水平的变化。通过这种方式,可以大规模研究这种特殊行为。这项调查的结果可能有助于规划和设计新的高层建筑,以减少建筑居民对噪音的暴露。开发了再现米兰整个建筑结构的三维声学模拟,以估计不同高度的车辆交通源产生的噪音水平。将预测的噪声水平与测量数据进行比较。此外,在整个米兰市区,我们选取​​了高于 50 m 的建筑物来分析不同高度下噪声暴露水平的变化。通过这种方式,可以大规模研究这种特殊行为。这项调查的结果可能有助于规划和设计新的高层建筑,以减少建筑居民对噪音的暴露。开发了再现米兰整个建筑结构的三维声学模拟,以估计不同高度的车辆交通源产生的噪音水平。将预测的噪声水平与测量数据进行比较。此外,在整个米兰市区,我们选取​​了高于 50 m 的建筑物来分析不同高度下噪声暴露水平的变化。通过这种方式,可以大规模研究这种特殊行为。这项调查的结果可能有助于规划和设计新的高层建筑,以减少建筑居民对噪音的暴露。将预测的噪声水平与测量数据进行比较。此外,在整个米兰市区,我们选取​​了高于 50 m 的建筑物来分析不同高度下噪声暴露水平的变化。通过这种方式,可以大规模研究这种特殊行为。这项调查的结果可能有助于规划和设计新的高层建筑,以减少建筑居民对噪音的暴露。将预测的噪声水平与测量数据进行比较。此外,在整个米兰市区,我们选取​​了高于 50 m 的建筑物来分析不同高度下噪声暴露水平的变化。通过这种方式,可以大规模研究这种特殊行为。这项调查的结果可能有助于规划和设计新的高层建筑,以减少建筑居民对噪音的暴露。
更新日期:2020-09-01
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