住宅小区内部地铁活塞风井噪声控制技术研究  

Research on noise control technology of subway piston-action ventilation shaft in residential area

作　　者：杨芳乙 李旭巍 李力克 石国兵 YANG Fangyi;LI Xuwei;LI Like;SHI Guobing(CMCU Engineering Co.,Ltd,Chongqing 400039,China)

机构地区：[1]中机中联工程有限公司,重庆400039

出　　处：《声学技术》2023年第3期351-357,共7页Technical Acoustics

摘　　要：地铁隧道活塞风井向外排风的同时,产生较强的噪声,特别是活塞风井置于住宅小区内部时,噪声对周围敏感建筑的影响更大,现场实测噪声超过了国家标准。为了有效控制活塞风井噪声对周围环境的影响,结合地铁已有消声降噪措施降噪量不足的情况,基于声学仿真软件Comsol和Cadna/A对活塞风井消声降噪技术措施进行理论研究,以寻求更优化的降噪技术来解决噪声问题。通过实测和模拟,采用合理设计消声器以后,住宅小区内部敏感建筑的噪声达到标准。文中的研究结果为此类噪声控制工程提供了技术支撑和参考。When the piston air shaft of subway tunnel in the residential area exhausts outward,strong noise is generated,which has a greater impact on surrounding sensitive buildings.The measured noise on site exceeds the requirements of national standards.In order to effectively control the impact of piston air shaft noise on the surrounding environment,combined with the actual situation of insufficient noise reduction of the existing noise reduction measures for subway,the technical measures reducing piston air shaft noise are theoretically studied based on the acoustic simulation software Comsol and Cadna/A,so as to seek the optimal method to solve the noise reduction problem.Through measurement and simulation,it is shown that after adopting reasonably designed silencers,the noise inside the sensitive building in the residential area can meet the requirements of the standards,which provides technical support and reference for this kind of noise control project.

关 键 词：活塞风井 消声降噪 声学仿真 实测和模拟 噪声控制 

分 类 号：TB53[理学—物理]