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CLC number: U231; U213.2

On-line Access: 2012-10-25

Received: 2012-09-07

Revision Accepted: 2012-09-17

Crosschecked: 2012-09-07

Cited: 14

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Citations:  Bibtex RefMan EndNote GB/T7714

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Journal of Zhejiang University SCIENCE A 2012 Vol.13 No.11 P.870-876

http://doi.org/10.1631/jzus.A12ISGT5


Ground-borne vibrations due to dynamic loadings from moving trains in subway tunnels


Author(s):  Xue-cheng Bian, Wan-feng Jin, Hong-guang Jiang

Affiliation(s):  Department of Civil Engineering, MOE, Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310058, China

Corresponding email(s):   bianxc@zju.edu.cn

Key Words:  Subway tunnel, Moving train loadings, Ground-borne vibration, 2.5D finite element, Gradually damped artificial boundary


Xue-cheng Bian, Wan-feng Jin, Hong-guang Jiang. Ground-borne vibrations due to dynamic loadings from moving trains in subway tunnels[J]. Journal of Zhejiang University Science A, 2012, 13(11): 870-876.

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T1 - Ground-borne vibrations due to dynamic loadings from moving trains in subway tunnels
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A12ISGT5


Abstract: 
In this study, ground vibrations due to dynamic loadings from trains moving in subway tunnels were investigated using a 2.5D finite element model of an underground tunnel and surrounding soil interactions. In our model, wave propagation in the infinitely extended ground is dealt with using a simple, yet efficient gradually damped artificial boundary. Based on the assumption of invariant geometry and material distribution in the tunnel’s direction, the Fourier transform of the spatial dimension in this direction is applied to represent the waves in terms of the wave-number. Finite element discretization is employed in the cross-section perpendicular to the tunnel direction and the governing equations are solved for every discrete wave-number. The 3D ground responses are calculated from the wave-number expansion by employing the inverse Fourier transform. The accuracy of the proposed analysis method is verified by a semi-analytical solution of a rectangular load moving inside a soil stratum. A case study of subway train induced ground vibration is presented and the dependency of wave attenuation at the ground surface on the vibration frequency of the moving load is discussed.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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[8]Sheng, X., Jones, C.J.C., Thompson, D.J., 2006. Prediction of ground vibration from trains using the wavenumber finite and boundary element methods. Journal of Sound and Vibration, 293(3-5):575-586.

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[10]Takemiya, H., 2003. Simulation of track–ground vibrations due to a high-speed train: the case of X-2000 at Ledsgard. Journal of Sound and Vibration, 261(3):503-526.

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