噪声与振动控制2019，Vol.39Issue(3)：103-106,4.DOI:10.3969/j.issn.1006-1355.2019.03.020
减振轨道结构对地铁车内振动与噪声的影响
Influence of Vibration Reduction Track Structures on Vibration and Noise in Metro Vehicles
摘要
Abstract
The vibration and noise of the vehicles with different track structures of a metro line are measured and analyzed. The results show that the Z-weighted longitudinal and horizontal vibrations of the steel spring structure are 7.46dB and 0.57 dB higher than those of the ordinary track structure respectively, and the A-weighted interior noise is increased by 9.71 dB in comparison with the noise of the ordinary track structure. The GJ-32 fastener-type vibration reduction track structure has a longitudinal and a horizontal vibration of 4.94 dB and 2.88 dB higher than the ordinary track structure respectively, and the interior noise increases by 8.71 dB in comparison with the noise of the ordinary track structure. Through the analysis of third octave and FFT, it is found that the low frequency noise and vibration mainly appear in the steel spring track structure. The 400 Hz-700 Hz intermediate frequency vibration and noise mainly appear in the GJ-32 type vibration reduction fastener track structure. From this, it can be concluded that the vibration-damping track structure is an important factor that causes vibration and noise anomalies in the vehicles.关键词
振动与波/减振轨道结构/钢弹簧/减振扣件Key words
vibration and wave/ vibration reduction track structures/ steel spring/ vibration reduction fastener分类
交通工程引用本文复制引用
夏放,王安斌..减振轨道结构对地铁车内振动与噪声的影响[J].噪声与振动控制,2019,39(3):103-106,4.基金项目
上海市科学技术委员会科研计划资助项目(1730501100) （1730501100）
