高层建筑交通噪声的噪声主要贡献路段探析

随着经济的发展,我国城市呈现高密度特点,高层建筑交通噪声干扰日益严峻。既有对高层建筑交通噪声的研究大多关注建筑本身的噪声分布,忽略对主要产生噪声的路段在空间中的定位。首先对道路细分,模拟计算细分单元对接受点的噪声贡献值,将较最大声压级差值在10 d B内的细分路段作为噪声主要贡献路段。随之构建多场景,比较发现噪声主要贡献路段的长度随道路距建筑距离的增加而增大,随接受点高度的增加而先减小后增加。道路距离对其影响更加显著。以反映空间位置关系的变量为因变量,得到噪声主要贡献路段长度的回归方程。成果可促使建筑规划设计中各种降噪措施的精准实施。

The Main Road Section of Noise Contribution to Traffic Noise in High Buildings

With economic development,the cities in our country are characterized by high density,and the interference of high-rise buildings with traffic noise is increasingly serious.The research on traffic noise of high-rise buildings mostly focuses on the noise distribution at the receiving point,ignoring the spatial location of sound sources on the road.The purpose of this paper is to locate the segment that contributes main noise of the road.First,by subdividing the road and simulating the noise contribution value of the subdivision unit,the main contribution of noise contribution is determined.Second,compared with the multi-way network spacing,get its spatial variation.Finally,taking the spatial and derivative variables as independent variables,the regression equation is obtained.The results can promote the precise positioning of noise reduction measures in the planning and design of buildings.