声屏障声学特性的模型试验研究

Model Text Research of Noise Barrier's Acoustic Characteristics

应用因次分析法确定声屏障实验室模型试验相似准数,通过模型试验测量声屏障插入损失并与目前工程中常用公式预估结果比较表明,模型与实物之间的声学特性关系可以用相似法准则进行定量描述,其结论对于进行声屏障声学设计有重要参考价值。

The thesis uses dimension analytical method to work out the similitude rule of noise barriers lab model test, via which noise barriers insertion loss can be measured. The comparison between the result of model test and that of engineering formula prediction indicates that the relationship in terms of acoustic characteristics between the model and the original object can be described in quantity by similitude rule.This conclusion has important value in the acoustic design of noise barriers.