高架轻轨列车啸叫声特性分析

Analysis on whistle characteristics of elevated light rail train

为了缓解城市交通拥挤带来的压力,近年来许多城市都开始出现高架轻轨列车,列车沿线的噪声问题严重影响了周围居民的工作和生活.各类噪声中对人体危害最严重的就是啸叫声,为了更好的采取有利措施降低啸叫声,以长春高架轻轨4号线为例进行研究分析.通过分析不同测试情况下噪声的分布特性,以证明啸叫声的存在;结合噪声的频谱规律,进一步分析啸叫声的频谱特性;由钢轨的光带分布位置判断钢轨是否平顺.为以后从根源上降低啸叫声提供帮助,同时也为进一步研究高架轻轨减振降噪措施提供参考.

In order to relieve the traffic congestion in cities, the elevated light rail tram has been built. Meanwhile, the problem of noise becomes more and more serious, and it has an influenee on the working and living of surrounding residents. It is proved that whistling does harm to the body of people. In order to take positive measures to reduce such whistlings, a research analysis is carried on the fourth line of Changchun light rail. The results of the analysis find characteristics of the noise in the article. With the noise spectrum, an analysis on the spectrum characteristics of whistling is made. Furthermore, it can determine whether the rail is smooth by the band distribution location. These are analyzed in detail in this article, which aims to provide some references to reduce the urban rail noise.