铁路声屏障绕射衰减分析计算
nalysis and Calculation on Diffraction Loss of railway noise barrier
通过对高速铁路声屏障进行现场声学测试，发现声屏障的实际降噪效果低于传统理论计算值。分析了列车运行时间间隔对这种偏差的影响，提出了运用等效时间模型对无限长线声源、有限长声屏障绕射损失计算公式进行修正的方法。
In the acoustic measurements of High-speed railway noise barrier, the problem that noise reduction of High-speed railway noise barrier is lower than the theoretical calculation is found. Analyse the reason of the train running time gap effect on the deflection , give the equal time model and the calculative formula of diffraction loss of infinite line sound source and finite noise barrier.
陈林
铁路运输工程声学工程环境污染、环境污染防治
声学，声屏障，车流量，时间，插入损失，绕射损失
acousticsnoise barriertraffic flowstimeinsertion lossdiffraction loss
陈林.铁路声屏障绕射衰减分析计算[EB/OL].(2008-12-24)[2025-08-18].http://www.paper.edu.cn/releasepaper/content/200812-769.点此复制
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