轻轨交通噪声的测量与分析  

Measurement and analysis of light rail transportation noise.

作　　者：龚农斌[1] 汤峰[1] 王吉荣[1] 陈士杰[1] 

机构地区：[1]同济大学声学研究所,上海200092

出　　处：《中国环境科学》2002年第2期170-173,共4页China Environmental Science

摘　　要：对已投入正常运行的上海轻轨明珠线的运行进行了现场测量,结果表明,在列车运行时噪声以低、中频为主,地面轨道和桥架轨道的噪声频谱曲线有明显的差异;在轻轨交通噪声中,桥架振动辐射噪声已占据主导地位,对于轻轨经过的噪声敏感区段仅靠声屏障不能达到理想的降低噪声的效果,只有辅以轨道良好的隔振措施,才能达到复合降低噪声措施的显著效果.其研究结果和分析对轻轨交通噪声的预测和防治具有应用价值.Light rail transportation begins to be the major measures to resolve city traffic problem. In this paper, field measurement of Shanghai light rail Bright Pearl line of normal operation has been taken. The results show that low and intermediate frequency noise is prime during operation. noise spectra curves have evident difference between ground railway and bridge railway; the bridge noise from vibration radiation is dominant in the light railway noise. In order to obtain ideal and distinct compound effect in the noise scusiture area, it is necessary not only to adopt noise barrier, but also to take good bridge vibration isolation measures. The results will be useful for noise prediction and protection of light railway transportation noise.

关 键 词：轻轨交通 交通噪声 声屏障 

分 类 号：X593[环境科学与工程—环境工程]