| 钢轨阻尼与声屏障组合降噪效果试验研究 |
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| 引用本文： | 邵琳,李晏良.钢轨阻尼与声屏障组合降噪效果试验研究[J].铁道建筑,2019(4):157-159. |
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| 作者姓名： | 邵琳 李晏良 |
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| 作者单位： | 中国铁道科学研究院研究生部;中国铁道科学研究院集团有限公司节能环保劳卫研究所 |
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| 基金项目： | 中国铁路总公司科技研究开发计划(2016Z001);中国铁路总公司科研试验(SY2016Z001);中国铁道科学研究院基金(2016YJ114) |
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| 摘 要： | 在我国一高速铁路的城市区域低速区段分别选取钢轨阻尼与声屏障组合措施区段、声屏障区段及对照区段3处进行降噪效果对比试验。试验结果表明:在67～146 km/h低速条件下,距离外轨7. 5,25. 0 m处的钢轨阻尼及声屏障组合降噪措施相比单一声屏障措施的附加降噪量分别为1. 6～2. 0,0. 6～0. 8 dB(A);钢轨横向、垂向加速度减振量为2. 1～2. 8 dB;钢轨阻尼对轮轨噪声主要作用频率具备减振降噪效果。
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| 关 键 词： | 高速铁路 组合降噪 试验研究 钢轨阻尼 声屏障 |
Experimental Study on Comprehensive Noise Reduction Effect of Rail Damping and Sound Barrier |
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| SHAO Lin,LI Yanliang.Experimental Study on Comprehensive Noise Reduction Effect of Rail Damping and Sound Barrier[J].Railway Engineering,2019(4):157-159. |
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| Authors: | SHAO Lin LI Yanliang |
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| Institution: | (Postgraduate Department,China Academy of Railway Sciences,Beijing 100081,China;Energy Saving & Environmental Protection&Occoupational Safety and Health Research Institute,China Academy of Railway Sciences Group Co. Ltd. ,Beijing 100081,China) |
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| Abstract: | In order to study the comprehensive noise reduction effect of rail damping and sound barrier,three different testing sites were chosen in the low-speed urban area of a high speed railway in China.The testing sites include combination of rail damping and sound barrier,sound barrier and reference site.The experimental results show that at low speed of 67 through 146 km/h,additional noise reduction effect of rail damping at 7.5 m and 25.0 m is respectively 1.6 through 2.0 and 0.6 through 0.8 dB(A).The vibration reduction effect of lateral and vertical acceleration of rail base is 2.1 through 2.8 dB.Also,rail damping has vibration and noise reducing effect on the domain frequency of wheel-rail noise. |
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| Keywords: | High speed railway Comprehensive noise reduction Experimental study Rail damping Sound barrier |
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