曲线段浮置板轨道横向特征对车内噪声影响分析  

Analysis of Influence of Lateral Characteristics of Floating Slab Track in Curved Section on Interior Noise

作　　者：高晓刚[1] 张震远 周建 王安斌[1] 鞠龙华 GAO Xiaogang;ZHANG Zhenyuan;ZHOU Jian;WANG Anbin;JU Longhua(School of Urban Rail Transit,Shanghai University of Engineering Science,Shanghai 201620,China;Operation Branch of Qingdao Metro Group Co.,Ltd.,Qingdao 266000,Shandong,China)

机构地区：[1]上海工程技术大学城市轨道交通学院,上海201620 [2]青岛地铁集团有限公司运营分公司,山东青岛266000

出　　处：《噪声与振动控制》2022年第5期182-186,共5页Noise and Vibration Control

基　　金：上海市自然科学基金资助项目(17030501100)。

摘　　要：以小半径曲线段浮置板轨道结构为研究对象,建立曲线段浮置板轨道的横向振动模型,结合现场的钢轨-道床-车厢等“三维一体”实时测试,重点挖掘同一时刻同一辆车下浮置板道床横向频响、钢轨粗糙度与车内噪声的频响相互对应特征,深入剖析曲线段浮置板轨道结构横向特征对车内噪声的影响机理。结果表明(:1)半径350 m曲线段浮置板轨道结构的横向中高动态频响400 Hz~630 Hz与车内噪声超标频段范围一致(;2)曲线段浮置板轨道钢轨31.5 mm的波长是导致车厢内噪声异常超标的主要原因(;3)抑制短波长波磨发展及添加谐振式钢轨阻尼器是控制车内噪声的主要方法,研究成果对车内噪声治理与轨道结构设计具有可靠的参考价值。Taking the floating slab track structure in the curved section with a small radius as the research object, its transverse vibration model is established. Combined with the three-dimensional real-time test of rail, track and vehicle, the corresponding characteristics of the transverse frequency response of floating slab track system, the rail corrugation and the vehicle internal noise for the same vehicle at the same time are analyzed. The influence mechanism of the lateral characteristics of curved floating slab track structure on the interior noise is deeply analyzed. The results show that:(1) The transverse medium-high dynamic frequency response of 400 Hz-630 Hz of the floating slab track structure with a radius of350 m is consistent with the frequency range of the excessive noise inside the vehicle;(2) The 31.5 mm wavelength of the floating slab track rail in the curved section is the main reason for the abnormal noise inside the vehicle;(3) Restraining the development of short wave’s corrugation and adding resonant rail damper are the main methods to control the interior noise.This research result has a reliable reference value for the interior noise control and track structure design.

关 键 词：声学 小半径曲线 浮置板道床测试 钢轨波磨测试 车内噪声 横向频响 

分 类 号：U270.16[机械工程—车辆工程]