铁道标准设计2018，Vol.62Issue(3)：40-43,74,5.DOI:10.13238/j.issn.1004-2954.201703190004
冲击荷载下CRTSⅡ型板式无砟轨道结构振动与噪声的关联性研究
Research on the Relationship between Vibration and Noise of CRTSⅡSlab Ballastless Track Structure under Impulse Load
摘要
Abstract
In order to study the relationship between vibration and noise of rails in ballastless track structure under impulse load,a 1 : 1 full proportion model is established to test CRTSⅡslab ballastless track with impulse hammering excitation method. Through hammering excitation of different direction and different position on the rail, the noise and acceleration responses of the rail are measured, and the frequency response is obtained by analyzing the rail admittance using origin software. The frequency response graph of noise and acceleration admittance is plotted. The noise and vibration characteristics below 4 000 Hz frequency of the rail-top, the rail-waist and the rail-bottom at the midpoint of the rail-specimen are obtained. The results show that under lateral impulse hammering excitation,the sound intensity of the rail top and rail waist is mainly related to the lateral vibration. The peaks of the sound intensity and vibration correspond well to the spectrum figure. Under vertical impulse hammering excitation,the sound intensity is mainly affected by the vertical vibration at 0~1 500 Hz frequency.关键词
冲击荷载/CRTSⅡ型板式无砟轨道/振动/噪声/关联性Key words
Impulse loads/CRTSⅡslab ballastless track/Vibration/Noise/Relationship分类
交通工程引用本文复制引用
王启好,崔日新,肖宏,田秋实,王冠..冲击荷载下CRTSⅡ型板式无砟轨道结构振动与噪声的关联性研究[J].铁道标准设计,2018,62(3):40-43,74,5.基金项目
北京交通大学大学生创新性实验计划项目资助(160130011) （160130011）
中央高校基本科研业务费专项资金资助(2015JBZ004) （2015JBZ004）
