| 高速铁路WJ-7、WJ-8型扣件减振性能试验研究 |
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| 引用本文： | 王鹏,刘佳,李伟,温泽峰.高速铁路WJ-7、WJ-8型扣件减振性能试验研究[J].中国铁路,2019(5):96-101. |
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| 作者姓名： | 王鹏 刘佳 李伟 温泽峰 |
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| 作者单位： | 西南交通大学牵引动力国家重点实验室;中国核动力研究设计院 |
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| 基金项目： | 国家自然科学基金资助项目(U1434201;51275430) |
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| 摘 要： | 在同时使用WJ-7、WJ-8型扣件的高速铁路无砟轨道线路上,进行现场锤击试验和线路动态行车试验,获得2种扣件轨道跨中轨头、扣件上方轨头以及轨道板振动响应结果,评估2种扣件系统减振效果。力锤敲击试验结果表明WJ-8型扣件轨道垂向振动衰减量比WJ-7型扣件轨道高20 dB左右。高速列车通过时,WJ-8型扣件轨道对钢轨振动有更好的衰减,主要由于CRTSⅡ型板式轨道为纵连式,CRTSⅠ型板式轨道为弹性支承单元板式,结构差异较大。研究结果可为高速铁路轨道结构减振方式的优化、设计、研究提供参考。
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| 关 键 词： | 高速线路 扣件 WJ-7型 WJ-8型 减振 |
Experimental Research on Vibration Damping Performance of HSR Fastenings WJ-7 and WJ-8 |
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| WANG Peng,LIU Jia,LI Wei,WEN Zefeng.Experimental Research on Vibration Damping Performance of HSR Fastenings WJ-7 and WJ-8[J].Chinese Railways,2019(5):96-101. |
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| Authors: | WANG Peng LIU Jia LI Wei WEN Zefeng |
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| Institution: | (State-Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu Sichuan 610031,China;Nuclear Power Institute of China,Chengdu Sichuan 610031,China) |
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| Abstract: | Hammering test and dynamic train operation test were conducted on high speed ballastless tracks installed with WJ-7 and WJ-8 fastenings to get the vibration response results at mid-span rail head,rail head above the fastening and track slab,in a bid to evaluate the vibration damping performance of the two fastenings.The hammering test showed that the vertical vibration attenuation of the track applied with WJ-8 was around 20dB higher than that applied with WJ-7.As a high speed train passing by,WJ-8 showed better damping performance than WJ-7 due to structural difference of CRTSⅡ(longitudinal connection)and CRTSⅡ(elastically supported unit board).The test results can be used as references for optimization,design and study of vibration damping approaches for HSR tracks. |
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| Keywords: | HSR fastening WJ-7 WJ-8 vibration damping |
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