钢轨谐振式浮轨扣件动态变形及减振降噪性能分析
徐宁曾飞李强王彦飞王志强
Analysis of Resonant Floating Rail Fastener Dynamic Deformation and Vibration Noise Reduction Effect
XU NingZENG FeiLI QiangWANG YanfeiWANG Zhiqiang
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作者信息:洛阳双瑞橡塑科技有限公司,471003,洛阳
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Affiliation:Luoyang Shuangrui Rubber & Plastic Science and Technology Co., Ltd., 471003, Luoyang, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2019.05.026
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中图分类号/CLCN:U213.2+44
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栏目/Col:研究报告
摘要:
选用谐振式浮轨扣件对西安地铁1号线某区段原有DTVI2扣件进行改造。测试分析了改造前后的轨道动态变形、轨道振动、敏感建筑物振动及二次辐射噪声变化水平。测试结果表明,谐振式浮轨扣件的轨道变形满足轨道线路安全要求，与DTVI2扣件的轨道相比,道床及隧道壁的振动水平降低至9~13 dB(Z)，地面振动降低7.3 dB(Z)，二次辐射噪声降低4.1 dB(A)，表明谐振式浮轨扣件具有较好的减振降噪效果。
Abstracts:
A section on Xi′an metro Line 1 adopts resonant floating rail fastener to reform the original fastener. The track deformation, vibration of the track system, vibration of sensitive buildings and the change of secondary radiation noise level before and after the reform are tested and analyzed. The testing results show that the deformation of track that adopts resonant floating rail fastener could meet the requirements of track safety. Compared with the DTVI2 fastener, the vibration level of the slab and the tunnel wall is reduced by 9~13 dBZ, the ground vibration is reduced by 7.3 dBZ, and the secondary radiation noise is reduced by 4.1 dB(A). All this proves that the resonant floating rail fastener has better vibration and noise reduction effect.
引文 / Ref:
徐宁，曾飞，李强，等.钢轨谐振式浮轨扣件动态变形及减振降噪性能分析[J].城市轨道交通研究，2019，22(05):121.
XU Ning，ZENG Fei，LI Qiang，et al.Analysis of Resonant Floating Rail Fastener Dynamic Deformation and Vibration Noise Reduction Effect[J].Urban Mass Transit，2019，22(05)：121.
XU Ning，ZENG Fei，LI Qiang，et al.Analysis of Resonant Floating Rail Fastener Dynamic Deformation and Vibration Noise Reduction Effect[J].Urban Mass Transit，2019，22(05)：121.
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