阵列式消声器在地铁工程中的应用研究

Application of array muffler in subway engineering

地铁风亭是地铁项目对外界声环境产生影响的重要环节之一,降噪措施为设置消声器。相对片式消声器,阵列式消声器在以较小的通风阻力获得所需消声效果的方案选择上范围更大、更灵活;在通过改变吸声体排列方式及数量来提升消声量时,阵列式消声器比片式消声器多了1个维度,可以在宽度方向和高度方向2个维度作出改变,调整的灵活性更好、精确度更高。实例研究表明:运用消声器性能曲线进行消声设计,可以比较直观、快速地进行定量分析并优选合适的方案提高设计人员工作效率;在地铁项目中应用阵列式消声器可以以较少的成本满足不同的降噪要求。

The subway wind pavilion is one of the important links of the subway project that has an impact on the external sound environment. The noise reduction measure is to install mufflers. Compared with the chip muffler, the array muffler has a wider range and is more flexible in selecting the scheme to obtain the required noise reduction effect with less ventilation resistance. When changing the arrangement and number of sound absorbers to improve the sound reduction, the array muffler has one more dimension than the chip muffler, which can be changed in the width direction and height direction. The adjustment is more flexible and accurate. The case study shows that the muffler performance curve can be used to carry out the quantitative analysis more intuitively and quickly, and the appropriate scheme can be selected to improve the working efficiency of designers. The application of array muffler in subway projects can meet different noise reduction requirements with less cost.