城市轨道交通车轮声振特性研究  

Study on Sound and Vibration Characteristics of Wheel on Urban Rail Transit

作　　者：尚婷 钟昊[2] 黄政东 孔云森 SHANG Ting;ZHONG Hao;HUANG Zheng-dong;KONG Yun-sen(Chongqing Rail Transit Group Co.,Ltd.,Chongqing 401120,China;School of Traffic&Transportation,Chongqing Jiaotong University,Chongqing 400074,China;Chongqing Municipal Research Institute of Design,Chongqing 400020,China)

机构地区：[1]重庆市轨道交通(集团)有限公司,重庆401120 [2]重庆交通大学交通运输学院,重庆400074 [3]重庆市市政设计研究院有限公司,重庆400020

出　　处：《四川环境》2024年第6期62-67,共6页Sichuan Environment

基　　金：重庆市建设科技项目(城科字2020第4-6)。

摘　　要：噪声扰民是城市轨道交通高架线路的主要环境污染问题之一。以重庆轨道交通一号线的车轮为研究对象,使用ANSYS对车轮进行模态分析和谐响应分析,然后使用LMSvirtual.lab分析车轮导纳峰值处的相关声振特性并进行了可视化研究。分析结果表明,在1000Hz以上高频域范围内,车轮踏面和辐板出现较大的振动,且随着频率增大,踏面和辐板振动更加显著;在2000Hz以上高频域范围内,径向模态对轮轨噪声的影响更大,在(r,5)模态下,声功率达到最大值107.75dB;车轮声辐射指向性具有一定的对称性,随着频率的增加,指向性的旁瓣个数呈现先增加后减少的趋势,且车轮面向轨道线路以外区域的噪声声压级,大于朝内一侧;将车轮划分为轮缘、轮辋、踏面、辐板及轮毂5个部分进行声学贡献分析,总体而言辐板对车轮噪声的贡献最大,应当针对性的设置降噪措施。Noise disturbance is one of the main environmental pollution problems of overhead lines for urban rail transit.Taking the wheel of Chongqing Rail Transit Line 1 as a research object,ANSYS was applied to analyze the modal and harmonious response of the wheel in this paper.Then,LMS virtual.lab was used to analyze the relevant acoustic and vibration characteristics at the peak of wheel admittance and carry out visualization research.The analysis results showed that the tread and spoke vibrated greatly in the high frequency range above l,000 Hz,and with the increase of frequency,the tread and spoke vibrate more significantly.In the high frequency range above 2,000 Hz,the radial mode had a greater impact on wheel-rail noise.In the(r,5)mode,the acoustic power reached the maximum value of 107.75 dB.The directivity of wheel sound radiation had a certain symmetry.With the increase of frequency,the number of sidelobes of directedness increased first and then decreased,and the noise pressure level of the wheel facing outside the track line was greater than that facing inside.The wheel was divided into 5 parts:flange,rim,wheel tread,spoke plate and hub for acoustic contribution analysis.In general,spoke plate contributed the most to wheel noise,and specific noise reduction measures should be taken.

关 键 词：城市轨道交通 轮轨噪声 噪声特性 有限元法 

分 类 号：X593[环境科学与工程—环境工程] U211.5[交通运输工程—道路与铁道工程]