Installation of rail vibration dampers （rail dampers for short） onto rails between sleepers is one of the measures to control rail noise generation and roughness growth. Amid the rapid expansion of high-speed and un...Installation of rail vibration dampers （rail dampers for short） onto rails between sleepers is one of the measures to control rail noise generation and roughness growth. Amid the rapid expansion of high-speed and underground railway networks in China, many suppliers are actively marketing and promoting their products, often giving confusing information. In this paper, a parametric study is used to investigate the effect of rail dampers on the dynamical behavior of a Chinese high-speed railway track. The Fourier transform-based method developed for analyzing dynamics of a railway track as an infinitely long periodic structure, with or without rail dampers, is applied in the investigation. It is hoped that results in this paper can help develop the understanding of the working mechanism of rail dampers, and provide useful information for product design and application.展开更多
基于力锤敲击方法,测试阻尼钢轨和标准钢轨的衰减率,将阻尼钢轨与标准钢轨衰减率对比。结果表明：阻尼钢轨低频部分衰减率接近于标准钢轨,高频部分（钢轨噪声明显部分）衰减率高于标准钢轨;相比于标准钢轨,1号阻尼钢轨垂向衰减率在2 500...基于力锤敲击方法,测试阻尼钢轨和标准钢轨的衰减率,将阻尼钢轨与标准钢轨衰减率对比。结果表明：阻尼钢轨低频部分衰减率接近于标准钢轨,高频部分（钢轨噪声明显部分）衰减率高于标准钢轨;相比于标准钢轨,1号阻尼钢轨垂向衰减率在2 500 Hz倍频程带时高出0.50 d B/m,2号阻尼钢轨垂向衰减率在1 600 Hz倍频程带时高出0.28 d B/m,3号阻尼钢轨在1 000 Hz倍频程带提高了0.21 d B/m。束型阻尼钢轨具有一定的降噪效果,可在标准钢轨的基础上降低1.3 d B（A）~1.5 d B（A）。将其应用于实际线路中,能降低铁路总噪声1.6 d B（A）~1.7 d B（A）。展开更多
基金Project supported by-the National Natural Science Foundation of China （Nos. U1434201 and 51475390）, the Foundation of China Railway （No. 2015Z003-B）, and the Scientific Research Foundation of State Key Laboratory of Traction Power （Nos. 2015TPL_T08 and 2017TPL_T01 ）, China
文摘Installation of rail vibration dampers （rail dampers for short） onto rails between sleepers is one of the measures to control rail noise generation and roughness growth. Amid the rapid expansion of high-speed and underground railway networks in China, many suppliers are actively marketing and promoting their products, often giving confusing information. In this paper, a parametric study is used to investigate the effect of rail dampers on the dynamical behavior of a Chinese high-speed railway track. The Fourier transform-based method developed for analyzing dynamics of a railway track as an infinitely long periodic structure, with or without rail dampers, is applied in the investigation. It is hoped that results in this paper can help develop the understanding of the working mechanism of rail dampers, and provide useful information for product design and application.
文摘基于力锤敲击方法,测试阻尼钢轨和标准钢轨的衰减率,将阻尼钢轨与标准钢轨衰减率对比。结果表明：阻尼钢轨低频部分衰减率接近于标准钢轨,高频部分（钢轨噪声明显部分）衰减率高于标准钢轨;相比于标准钢轨,1号阻尼钢轨垂向衰减率在2 500 Hz倍频程带时高出0.50 d B/m,2号阻尼钢轨垂向衰减率在1 600 Hz倍频程带时高出0.28 d B/m,3号阻尼钢轨在1 000 Hz倍频程带提高了0.21 d B/m。束型阻尼钢轨具有一定的降噪效果,可在标准钢轨的基础上降低1.3 d B（A）~1.5 d B（A）。将其应用于实际线路中,能降低铁路总噪声1.6 d B（A）~1.7 d B（A）。
