Ground vibration due to a high-speed moving harmonic rectangular load. on a poroviscoelastic half-space

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:45

Article

Lefeuve-Mesgouez, G.¹  Mesgouez, A.¹ 

[1] Univ Avignon, Fac Sci, UMR A Climate Soil & Environm 1114, F-84000 Avignon, France

关键词: moving load;    wave propagation;    porous media;    Biot theory;    high speed;    Mach cone;    P2 wave;   

DOI  :  10.1016/j.ijsolstr.2008.01.026

来源: Elsevier

【 摘 要 】

The transmission of vibrations in the ground, due to a high-speed moving vertical harmonic rectangular load, is investigated theoretically. The problem is three-dimensional and the interior of the ground is modelled as a totally or partially saturated porous viscoelastic half-space, using the complete Biot theory. The solutions in the transformed domain are obtained using a double Fourier transform on the surface spatial variables. A modified hysteretic damping model defined in the wavenumber domain is used, first presented by Lefeuve-Mesgouez et al. [Lefeuve-Mesgouez, G., Le Houedec, D., Peplow, A.T., 2000. Vibration in the vicinity of a high-speed moving harmonic strip load. Journal of Sound and Vibration 231(5) 1289-1309]. Numerical results for the displacements of the solid and fluid phases, over the surface of the ground and in depth, are presented for loads moving with speeds up to and beyond the Rayleigh wave speed of the medium. (C) 2008 Elsevier Ltd. All rights reserved.

【 授权许可】

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