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详细说明：分享书籍，希望能有用。表面波谱法-SASW 法。
The spectral analysis of surface wave method (SASW) has often been
used as a non-invasive measurement process that can evaluate the material
properties of earth structures. This method uses wave propagation theory to
determine the shear wave velocity profile in soil layers. The limitations of the strata
geometry and background noise are two major difficulties with this method. This
study simulates SASW tests using FLAC for horizontal soil layers. An impulsive
source will be generated for each SASW simulation, and the surface wave velocity
data can be picked up by the equally-spaced sensors at the surface. The
pre-procedure of the signal process includes Hilbert-Huang transform (HHT) and
impulse response windowing filtering (IRF). The test results were compared with the
dispersion curves by different filtering processes. This study shows the proposed
filtering process can improve the separation phenomenon of dispersion curves,
especially for sensors having large offsets from the source. Further, the
pre-procedure can reduce erroneous signal processing in the case of 'inverse' soil
layers. The difficulty of applying the SASW method to inverse soil layers is significantly reduced.
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