effects of underground cavities on the frequency spectrum of seismic shear waves
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ID: 154223
2014
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Abstract
A numerical method is proposed to study the
scattering of seismic shear waves induced by the presence of underground
cavities in homogeneous soils. The method is based on the superposition
of two solutions: the solution of the free-wave propagation problem in a
uniform half-space, easily determined analytically, and the solution of the
wave scattering problem due to the cave presence, evaluated numerically
by means of an ad hoc code implemented by using the ANSYS Parametric
Design Language. In the two-dimensional setting, this technique is applied
to the case of a single cave, placed at a certain depth from the ground
level. The frequency spectrum of the seismic shear oscillation on the
ground surface is determined for different dimensions and depths of the
cave and compared with the spectrum registered without caves. The
influence of the cave dimensions and depth on the spectrum amplification
is analyzed and discussed.
| Reference Key |
lancioni2014advanceseffects
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|---|---|
| Authors | ;G. Lancioni;R. Bernetti;E. Quagliarini;L. Tonti |
| Journal | acta oncologica (stockholm, sweden) |
| Year | 2014 |
| DOI |
10.1155/2014/934284
|
| URL | |
| Keywords |
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