基于道路可视度的高层交通噪声影响因素初探

Study on Factors affecting Traffic Noise in High-rise Building Based on Road Visibility

现代城市以高密度高容积率为主要特征,生活于高层住宅的居民受交通噪声影响严重。既有交通噪声垂直分布的研究成果存在较大差异,这与仅考虑临近道路影响,忽略了对所处城市空间的分析有关。完成了高层建筑在简单场景下的噪声模拟;获取了逐层外窗的道路可视度及与道路的空间距离;而后以交通噪声为自变量,以可视度和空间距离为因变量,进行偏相关分析。结果表明随高度增加,空间距离增大,使噪声减小,但同时道路可视度增加,使噪声变大。二者的交互作用使得交通噪声总体上呈现先增后减的变化规律,噪声变化的转折点因所处城市空间而有差异。成果将在复杂场景下获得进一步的明确。

In modern cities,the high density and high volume ratio are the main characteristics.Residents living in high-rise residential buildings are severely affected by traffic noise.There is a big difference in the research results of the vertical distribution of traffic noise,which only considers the influence of adjacent roads,ignoring the analysis of the urban space.This paper aims to prove that the size of each external window noise value is related to how many roads can be seen,which lays the foundation for the further research on urban noise.Completion of the noise simulation of high-rise buildings in a simple scenario;the visibility of the road from the floor to the outside of the floor and the spatial distance from the road;the visibility as a control variable,the exclusion of the influence of visibility,and the analysis of spatial distance and sound The relationship between pressure levels;taking spatial distance as the control variable,excluding the influence of spatial distance,and analyzing the relationship between visibility and sound pressure level.The results show that with the increase of altitude,the traffic noise has the law of increasing first and then decreasing.This is because as the height increases,the spatial distance increases,so that the noise is reduced,but at the same time the visibility of the road increases,so that the noise becomes larger.The results will be further confirmed in complex scenarios.