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**Harvard**

Cao, Z., Cai, Y., Boström, A. och Zheng, J. (2012) *Semi-analytical analysis of the isolation to moving-load induced ground vibrations by trenches on a poroelastic half-space*.

** BibTeX **

@article{

Cao2012,

author={Cao, Zhigang and Cai, Y.Q. and Boström, Anders and Zheng, J},

title={Semi-analytical analysis of the isolation to moving-load induced ground vibrations by trenches on a poroelastic half-space},

journal={Journal of Sound and Vibration},

issn={0022-460X},

volume={331},

issue={4},

pages={947-961},

abstract={A semi-analytical model is proposed to investigate the screening efficiency of trenches to moving-load induced ground vibrations. The ground is modeled as a fully saturated poroelastic half-space governed by Biot's dynamic poroelastic theory. The trenches are obtained by placing three rectangular elastic layers with appropriate width upon the poroelastic half-space. By Helmholtz decomposition, the displacement fields of the elastic layers are decomposed into three scalar potentials. Analytical solutions are obtained based on Fourier transform and Fourier series in the transformed domain. The time-domain results are obtained by the fast Fourier transform (FFT). The different performances of trenches on a saturated poroelastic half-space and a single-phase elastic half-space to the moving load-induced ground vibration are identified. It is found that the discrepancy of the screening efficiencies between the two models becomes significant when the load speed approaches the Rayleigh wave speed of the ground surface. Also, some parametric studies for the screening efficiency of the trench on the poroelastic half-space are presented.},

year={2012},

}

** RefWorks **

RT Journal Article

SR Electronic

ID 156985

A1 Cao, Zhigang

A1 Cai, Y.Q.

A1 Boström, Anders

A1 Zheng, J

T1 Semi-analytical analysis of the isolation to moving-load induced ground vibrations by trenches on a poroelastic half-space

YR 2012

JF Journal of Sound and Vibration

SN 0022-460X

VO 331

IS 4

SP 947

OP 961

AB A semi-analytical model is proposed to investigate the screening efficiency of trenches to moving-load induced ground vibrations. The ground is modeled as a fully saturated poroelastic half-space governed by Biot's dynamic poroelastic theory. The trenches are obtained by placing three rectangular elastic layers with appropriate width upon the poroelastic half-space. By Helmholtz decomposition, the displacement fields of the elastic layers are decomposed into three scalar potentials. Analytical solutions are obtained based on Fourier transform and Fourier series in the transformed domain. The time-domain results are obtained by the fast Fourier transform (FFT). The different performances of trenches on a saturated poroelastic half-space and a single-phase elastic half-space to the moving load-induced ground vibration are identified. It is found that the discrepancy of the screening efficiencies between the two models becomes significant when the load speed approaches the Rayleigh wave speed of the ground surface. Also, some parametric studies for the screening efficiency of the trench on the poroelastic half-space are presented.

LA eng

DO 10.1016/j.jsv.2011.09.009

LK http://dx.doi.org/10.1016/j.jsv.2011.09.009

LK http://publications.lib.chalmers.se/records/fulltext/156985/local_156985.pdf

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