动车组受电弓区域被动降噪技术研究

基金项目: 国家自然科学基金（U1534208）; 国家重大研发计划（2016YFB1200600）

Passive noise reduction technology of EMU pantograph area

1.
CRRC Tangshan Co.Ltd., Tangshan 063035, China;
2.
King Technology Co. Ltd., Beijing 100070, China;
3.
National Engineering Research Center of Rail Traffic Control System, Beijing Jiaotong University, Beijing 100044, China

摘要: 对高速动车组受电弓区域的外装结构及内装材料进行研究,采用实验法测试新结构及新材料加入前后受电弓区域隔声特性的变化,并对新结构及新材料加入前后的隔声特性变化情况进行对比和分析。研究结果表明,在受电弓平顶基础结构施加隔声罩、轻质吸音棉和超薄吸音板,能够在全频段内有效改善受电弓平顶结构的隔声水平。该结论可为动车组受电弓结构的隔声设计提供实验依据。
- 受电弓平顶 /
- 新型结构 /
- 内装材料 /
- 被动降噪
Abstract: In this paper, the exterior structure and interior materials of the pantograph area of the high-speed EMU were studied. The changes of the sound insulation characteristics of the pantograph area before and after the new structure and the new materials were tested, contrasted and analyzed by the experimental method. The results showed that the noise level of the pantograph flat roof structure could be effectively improved in the whole frequency band by applying sound insulation hood, light sound absorbing cotton and ultra-thin sound absorbing plate in the pantograph flat roof foundation. The conclusion of this paper can provide experimental basis for the sound insulation design of the pantograph structure of EMU.
- pantograph flat roof /
- new structure /
- interior materials /
- passive noise reduction

[1]	Noise creation limits for railways[S].[S.1.] UIC Subcommission Nosie and Vabrations,2002.
[2]	EADE P W, HARDY A E J.Railway vehicle internal noise[J].Journal of Sound and Vibration, 1997,51(3):403-415.
[3]	全国声学标准化委员会.建筑和建筑构件隔声测量第3部分:建筑构件空气声隔声的实验室测量:GB/T 19889-2005 [S].北京:中国标准出版社,2007.
[4]	中华人民共和国住房和城乡建设部.室内混响时间测量规范:GB/T 50076-2013[S]. 北京:中国建筑工业出版社,2014.
[5]	尹力军, 叶年发, 潘立超,等. 铁路车站大空间混响时间的测试与分析[J]. 铁路计算机应用,2013, 22(5):37-40.
[6]	中华人民共和国建设部.建筑隔声评价标准:GB/T 50121-2005 [S].北京:中国建筑工业出版社,2005.
[7]	卢瑜. Pulse振动测试软件的后续开发[J]. 宇航计测技术, 2009, 29(4):71-73.
[8]	詹沛,白国锋,牛军川,等. 含空气层与多孔材料的复合结构隔声特性研究[J]. 应用声学,2014,33(5):426-432.