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Numerical study on high-frequency effect of rail corrugation on subway-induced environmental vibrations

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Abstract

Rail corrugation is a common phenomenon in railway engineering, but its high-frequency effects on environmental vibrations are neglected in most previous research. Therefore, a hybrid numerical method was proposed in this paper to analyze subway-induced ground vibrations, especially in the high-frequency range caused by rail corrugation. The analysis model composed of a three-dimensional (3D) load generation subsystem and a two-dimensional (2D) wave propagation subsystem was established based on the vehicle-track coupling method and finite element method, and validated by the measured data. Then the high-frequency effects under different tunnel depths and rail fasteners were further studied. The results show that high-frequency vibrations propagate radially from the tunnel wall to the surrounding soil and transmit to the ground by the dominant path under different tunnel depths. The increase of tunnel depths could result in more serious high-frequency effects in the vibration amplification region. When the depth changes from 17 to 29 m, the 250 Hz ground vibration at around 30 m away from the track increases by 5.6 dB. Besides, it was found that in the commonly used range, the reduction of fastener stiffness can effectively eliminate high-frequency ground vibrations, while there is a significant nonlinear relationship between fastener damping and high-frequency vibration. The findings of this paper could provide references for parameter design in subway construction and rail corrugation remediation, and help create better living environments.

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Data availability

The datasets used and analyzed during the current study are available from the corresponding author on reasonable request.

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Funding

This work was supported by the Beijing Nova Program (Z191100001119126), the Fundamental Research Funds for the Central Universities (2020JBM049), the Shanghai Key Laboratory of Rail Infrastructure Durability and System Safety (R202101) and the 111 Project (B20040).

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Contributions

Sen Wang: formal analysis, data curation, writing—original draft, writing—review and editing, investigation. Tao Xin: conceptualization, methodology, formal analysis, writing—review and editing, funding acquisition. Pengsong Wang: data curation, writing—original draft, writing—review and editing. Yi Yang: writing—review and editing, investigation. Peng Chen: project administration, data curation. Lei Zhao: project administration, investigation, funding acquisition. Sihe Zhao: investigation, data curation. Yuming Luo: supervision, investigation.

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Correspondence to Tao Xin.

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The authors declare no competing interests.

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Wang, S., Xin, T., Wang, P. et al. Numerical study on high-frequency effect of rail corrugation on subway-induced environmental vibrations. Environ Sci Pollut Res 29, 80657–80668 (2022). https://doi.org/10.1007/s11356-022-21264-0

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  • DOI: https://doi.org/10.1007/s11356-022-21264-0

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