摘要
目前我国高速铁路噪声影响评价与控制主要采用A声级指标进行评判,重点考虑了中高频噪声影响。针对高速铁路低频声能量占比高的特点,本文采用现场试验手段,探索了高速列车通过桥梁区段和桥梁声屏障区段的低频噪声影响特性,分析了高速铁路噪声频谱特征,研究了低频噪声随运行速度的变化规律,识别了低频噪声的空间传播特性。通过对比分析不同结构形式声屏障对低频噪声的控制效果,结合特征响度客观心理声学评价量评估了高速铁路低频噪声影响,并为后续研究提出了相关建议。
Railway environmental noise impact assessment and control in China is based on index related with A-weighted sound pressure level, mainly evaluating noise in middle-high frequency. Considering the spectrum features, noise influence characteristics of high-speed railway in low frequency is studied by field test. The noise of high-speed railway in bridge section with/without sound barrier is captured. In this paper, the spectrum characteristics and speed effect of high-speed railway noise are analyzed. The propagation law of exterior radiation noise in low frequency is mastered. Meanwhile, the noise reduction effect of various sound barrier is compared. Exploiting the index of loudness level, the noise impact of highspeed railway in low frequency is investigated. Finally, prospect follow-up study on low frequency noise of high-speed railway is suggested.
作者
陈迎庆
邢星
张毅超
韩立
伍向阳
CHEN Yingqing;Xing Xing;ZHANG Yichao;HAN Li;WU Xiangyang(Energy Saving&Environmental Protection&Occupational Safety and Health Research Institute,China Academy of Railway Sciences Co.,Ltd.,Beijing 100081,China)
出处
《铁路节能环保与安全卫生》
2023年第1期11-16,31,共7页
Railway Energy Saving & Environmental Protection & Occupational Safety and Health
基金
中国国家铁路集团有限公司科技研究开发计划课题(J2021G012)
中国铁道科学研究院集团有限公司科研开发基金项目(2020YJ163)
北京市轨道交通建设管理有限公司双创基金项目(SCJJ2022001)
中国铁道科学研究院集团有限公司节能环保劳卫研究所自主投入研发课题(2022HWZ01)。
关键词
高速铁路
低频噪声
速度影响
传播规律
High-speed railway
Low frequency noise
Influence of speed
Propagation law
