Abstract
In this paper, an efficient and robust approach is presented for the prediction of subway train-induced ground vibrations considering random track unevenness. The proposed approach is developed by a two-step approach. Firstly, the power spectral density functions of the wheel–rail interaction forces are obtained through the combination of the vehicle–track–tunnel–soil theoretical model and the pseudo-excitation method (PEM). Secondly, by assuming the geometry of the track, tunnel, and soil to be homogeneous along the track, the nonstationary random ground vibrations are solved by combining the PEM and the 2.5D finite element–perfectly matched layers method. To improve computational efficiency, an efficient wavenumber sampling scheme is proposed. In the numerical examples, the proposed approach is validated by comparing the results obtained with the published results. The influence of the train speed on the ground vibrations are also investigated, in which two types of track structure, namely the direct fixation track and floating slab track, are considered.
| Original language | English |
|---|---|
| Pages (from-to) | 359-379 |
| Number of pages | 21 |
| Journal | Journal of Sound and Vibration |
| Volume | 455 |
| DOIs | |
| Publication status | Published - 1 Sep 2019 |
Keywords
- 2.5D FEM–PML
- Environmental vibration
- Pseudo-excitation method (PEM)
- Random vibration
- Subway
- Track unevenness
Cite this
}
An efficient approach for prediction of subway train-induced ground vibrations considering random track unevenness. / Zhu, Zhihui; Wang, Lidong; Costa, Pedro Alves; Bai, Yu; Yu, Zhiwu.
In: Journal of Sound and Vibration, Vol. 455, 01.09.2019, p. 359-379.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - An efficient approach for prediction of subway train-induced ground vibrations considering random track unevenness
AU - Zhu, Zhihui
AU - Wang, Lidong
AU - Costa, Pedro Alves
AU - Bai, Yu
AU - Yu, Zhiwu
PY - 2019/9/1
Y1 - 2019/9/1
N2 - In this paper, an efficient and robust approach is presented for the prediction of subway train-induced ground vibrations considering random track unevenness. The proposed approach is developed by a two-step approach. Firstly, the power spectral density functions of the wheel–rail interaction forces are obtained through the combination of the vehicle–track–tunnel–soil theoretical model and the pseudo-excitation method (PEM). Secondly, by assuming the geometry of the track, tunnel, and soil to be homogeneous along the track, the nonstationary random ground vibrations are solved by combining the PEM and the 2.5D finite element–perfectly matched layers method. To improve computational efficiency, an efficient wavenumber sampling scheme is proposed. In the numerical examples, the proposed approach is validated by comparing the results obtained with the published results. The influence of the train speed on the ground vibrations are also investigated, in which two types of track structure, namely the direct fixation track and floating slab track, are considered.
AB - In this paper, an efficient and robust approach is presented for the prediction of subway train-induced ground vibrations considering random track unevenness. The proposed approach is developed by a two-step approach. Firstly, the power spectral density functions of the wheel–rail interaction forces are obtained through the combination of the vehicle–track–tunnel–soil theoretical model and the pseudo-excitation method (PEM). Secondly, by assuming the geometry of the track, tunnel, and soil to be homogeneous along the track, the nonstationary random ground vibrations are solved by combining the PEM and the 2.5D finite element–perfectly matched layers method. To improve computational efficiency, an efficient wavenumber sampling scheme is proposed. In the numerical examples, the proposed approach is validated by comparing the results obtained with the published results. The influence of the train speed on the ground vibrations are also investigated, in which two types of track structure, namely the direct fixation track and floating slab track, are considered.
KW - 2.5D FEM–PML
KW - Environmental vibration
KW - Pseudo-excitation method (PEM)
KW - Random vibration
KW - Subway
KW - Track unevenness
UR - http://www.scopus.com/inward/record.url?scp=85066437281&partnerID=8YFLogxK
U2 - 10.1016/j.jsv.2019.05.031
DO - 10.1016/j.jsv.2019.05.031
M3 - Article
VL - 455
SP - 359
EP - 379
JO - Journal of Sound and Vibration
JF - Journal of Sound and Vibration
SN - 0022-460X
ER -