高速磁悬浮列车噪声声突发率的研究  

A Study on Onset Rate of High-Speed Maglev Noise

作　　者：汤峰[1] 陈小鸿[1] 李潭峰[1] 

机构地区：[1]同济大学交通运输工程学院,上海200092

出　　处：《噪声与振动控制》2005年第6期34-35,共2页Noise and Vibration Control

摘　　要：高速磁悬浮列车运行速度高,在近轨道处的噪声不仅声级高,而且噪声作用时间短,使得声突发率高。研究了声突发率的计算方法,并对上海浦东高速磁悬浮列车以432km／h行驶时的噪声进行了测量,计算得到在磁悬浮桥架下和距离磁悬浮30m处的声突发率分别为18dB／s和40dB／s。在对应的问卷调查中,75％的居民反映经过磁悬浮桥下时会被磁悬浮噪声“惊吓”,13．5％的居民抱怨会“头疼”,高速磁悬浮列车产生的高声突发率的噪声严重影响了居民生活。Sound onset rate of high-speed maglev is defined in the article; it increases as speed increases for a given distance, and decreases as distance increases for a given speed. At the speed of 432 km/h at Shanghai Pudong, onset rate is 18dB/s and 40dB/s at the distance of 30m to maglev track and under the viaduct track. 88.5 % of the inhabitants along the maglev track complainted that they were startled when they past by the maglev track in the survey of correspondence.

关 键 词：声学 声突发率 磁悬浮 调查 烦恼度 

分 类 号：U237[交通运输工程—道路与铁道工程]