低温条件对板式高速铁路轮轨滚动噪声的影响研究  

Influence of Low Environmental Temperature on Wheel/rail Rolling Noise of Slab High Speed Railway

作　　者：成功[1,2] 陈宗平 肖新标 韩健[3] 圣小珍 CHENG Gong;CHEN Zongping;XIAO Xinbiao;HAN Jian;SHENG Xiaozhen(State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure,East China Jiaotong University,Nanchang 330013;State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031;School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031;School of Urban Railway Transportation,Shanghai University of Engineering Science,Shanghai 201620)

机构地区：[1]华东交通大学轨道交通基础设施性能监测与保障国家重点实验室,南昌330013 [2]西南交通大学牵引动力国家重点实验室,成都610031 [3]西南交通大学机械工程学院,成都610031 [4]上海工程技术大学城市轨道交通学院,上海201620

出　　处：《机械工程学报》2023年第10期187-196,共10页Journal of Mechanical Engineering

基　　金：国家自然科学基金(U1834201);国家重点研发计划战略性国际科技创新合作重点专项(2016YFE0205200);四川省科技计划(2020YJ0076);中国国家铁路集团有限公司科技研究开发计划(N2019G037)资助项目。

摘　　要：中国高铁运营跨越多个气候带,且面临着向更高纬度国家输出高铁设备的契机,低温对滚动噪声的影响有必要进行系统的预测与研究。针对国内应用较广的300-1型和WJ-8型扣件,对其在不同低温时的装配动刚度和损失因子进行试验,基于试验结果和建立的板式轨道高速铁路滚动噪声预测模型,对低温条件下高速铁路滚动噪声开展研究。研究表明,随着环境温度的下降,滚动噪声对标准点等效连续A声级的贡献值也会变小,当温度达到轨垫板材料的玻璃化温度后,温度的下降对贡献值的影响变小,甚至会使滚动噪声小幅上升。对300-1型扣件和WJ-8扣件来说,和10℃的滚动噪声相比,350 km/h运行速度下滚动噪声贡献值的最大降幅分别可以达到4.0dB(A)和3.1d B(A);这个降幅主要来自于钢轨贡献的变化,如果列车运行速度更低,总的A声级将对温度更为敏感;从三分之一倍频的分频上看,在2000 Hz以下的频率,有必要考虑空气参数随温度的变化。The operation of China’s high-speed railway crosses a very large latitude and longitude,and faces the opportunity to export high-speed railway equipment to countries with higher latitudes.The influence of low temperature on rolling noise needs systematic prediction and research.The assembly dynamic stiffness and loss factor of 300-1 fasteners and WJ-8 fasteners,which are widely used in China,are tested at different low temperatures.Based on the test results and the established slab track high-speed railway rolling noise prediction model,the rolling noise of high-speed railway at low temperature is studied.Studies have shown that as the environmental temperature decreases,the contribution of rolling noise to the equivalent continuous A-weighted sound level at the standard point will also decrease.Moreover,when the temperature reaches the glass transition temperature of the railpad materials,the decrease of temperature has little effect on the contribution value,and even makes the rolling noise increase slightly.For 300-1 fasteners and WJ-8 fasteners,compared with the rolling noise at 10℃,the maximum reduction of rolling noise contribution value can reach 4.0 dB(A)and 3.1 dB(A),when the train running at 350 km/h;This drop is mainly due to the change in the rail contribution.If the train runs at a lower speed,the total A-weighted sound level will be more sensitive to temperature.From the perspective of the one-third octave frequency band,at the frequency range below 2000 Hz,it is necessary to consider the change of air parameters with temperature.

关 键 词：滚动噪声 低温 板式高速铁路 

分 类 号：U211[交通运输工程—道路与铁道工程]