【摘要】 为了缓解交通噪声带来的干扰,设立声屏障是一种行之有效的降噪措施。现运用德国Cadna/A环境噪声模拟软件,以江苏沿江高速公路声屏障设计为例,计算了声屏障的插入损失,并将计算结果与按照《声屏障声学设计和测量规范》(HJ/T90-2004)获得的实测结果进行了比较,分析了计算结果与实测结果产生误差的原因,结果表明,在大车流、低本底噪声的情况下,Cadna/A软件可较好地应用于工程设计中。更多还原

【Abstract】 Setting noise barrier is an effective measure to depress interference from traffic noise.Applying the environmental noise simulation software Cadna/A,the insertion loss of noise barrier is calculated for thenoise barrier design of Jiangsu-Yanjiang high way.The calculated results are compared with the measured data obtained in accordance with "Norm on Acoustic Design and Measurement of Noise Barriers",of which the causes of producing errors are analyzed.It can be concluded that in the condition of low background noise and large traffic amount the software Cadna/A is applicable in engineering design.更多还原