Influence of inhomogeneous initial stress field caused by borehole pressure on dynamic longitudinal impedance of saturated soil

HU Wen-tao;XIA Tang-dai;CHEN Wei-yun;HUANG Rui;

Journal of Vibration and Shock ›› 2014, Vol. 33 ›› Issue (9) : 116-121.

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PDF(1538 KB)
Journal of Vibration and Shock ›› 2014, Vol. 33 ›› Issue (9) : 116-121.
论文

Influence of inhomogeneous initial stress field caused by borehole pressure on dynamic longitudinal impedance of saturated soil

  • HU Wen-tao 1,2, XIA Tang-dai 1,2, CHEN Wei-yun 1,2, HUANG Rui 1,2
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Abstract

Based on the theory of incremental dynamic mechanics, longitudinal dynamic response of initially homogeneous isotropic saturated soil under the influence of borehole pressure is investigated theoretically. Firstly,the radial inhomogeneity of soil medium is deduced. Then,longitudinal dynamic governing equation of each annular is deduced based on the plain strain assumption. The analytical solution is also arrived. Finally,the influence of inhomogeneous initial stress field caused by borehole pressure on the longitudinal impedance of soil is analyzed,and available solution is presented for a comparison of present solution.


Key words

pressurized borehole / longitudinal impedance / inhomogeneous initial stress field / radially inhomogeneous saturated soil

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HU Wen-tao;XIA Tang-dai;CHEN Wei-yun;HUANG Rui;. Influence of inhomogeneous initial stress field caused by borehole pressure on dynamic longitudinal impedance of saturated soil[J]. Journal of Vibration and Shock, 2014, 33(9): 116-121
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