Field Study of the Interior Noise and Vibration of a Metro Vehicle Running on a Viaduct: A Case Study in Guangzhou

Lei Yan, Zhou Chen, Yunfeng Zou, Xuhui He, Chenzhi Cai, Kehui Yu and Xiaojie Zhu
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Lei Yan: School of Civil Engineering, Central South University, Changsha 410075, China
Zhou Chen: School of Civil Engineering, Central South University, Changsha 410075, China
Yunfeng Zou: School of Civil Engineering, Central South University, Changsha 410075, China
Xuhui He: School of Civil Engineering, Central South University, Changsha 410075, China
Chenzhi Cai: School of Civil Engineering, Central South University, Changsha 410075, China
Kehui Yu: School of Civil Engineering, Central South University, Changsha 410075, China
Xiaojie Zhu: Guangzhou Metro Corporation, Ltd., Guangzhou 510000, China

IJERPH, 2020, vol. 17, issue 8, 1-14

Abstract: The interior noise and vibration of metro vehicles have been the subject of increasing concern in recent years with the development of the urban metro systems. However, there still is a lack of experimental studies regarding the interior noise and vibration of metro vehicles. Therefore, overnight field experiments of the interior noise and vibration of a standard B-type metro train running on a viaduct were conducted on metro line 14 of Guangzhou (China). Both the A-weighted sound pressure level and linear sound pressure level were used to evaluate the interior noise signals in order to revel the underestimation of the low-frequency noise components. The results show that the interior noise concentrates in the low-to-middle frequency range. Increasing train speeds have significant effects on the sound pressure level inside the vehicle. However, two obvious frequency ranges (125–250 Hz and 400–1000 Hz) with respective corresponding center frequencies (160 Hz and 800 Hz) of the interior noise are nearly independent of train speed. The spectrum analysis of the vehicle body vibration shows that the frequency peak of the floor corresponds to the first frequency peak of the interior noise spectrum. There are two frequency peaks around 40 Hz and 160 Hz of the sidewall’s acceleration level. The frequency peaks of the acceleration level are also independent of the train speeds. It hopes that the field measurements in this paper can provide a data set for researchers for further investigations and can contribute to the countermeasures for reducing interior noise and vibration of a metro vehicle.

Keywords: sound pressure level; field measurements; spectrum analysis; interior noise and vibration of vehicle (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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