Considering soil anisotropy in seismic CPT data
Considering soil anisotropy in seismic CPT data
This study examines the uncertainty associated with soil anisotropy in estimating shear wave velocity using seismic cone penetration test (SCPT) data. Traditional SCPT-based velocity estimates often assume that soil properties are isotropic, potentially introducing inaccuracies in anisotropic soils. Here, wave propagation theory is applied to examine both of wave arrival time and true travel path, from which we provide more comprehensive understanding of anisotropy-related uncertainty. Four simplified soil models are also explored, with degrees of anisotropy (horizontal-to-vertical velocity ratio) varying from 0 to ±50%. The implications for SCPT data processing and interpretation are discussed. Finally, a method is proposed to more accurately estimate anisotropic velocity values using SCPT.
Joonsang Park; G. Sauvin; M. Vanneste; Jean-Remi Dujardin; Rasmus Tofte Klinkvort; C. Madshus; Roi Soage Santos; John J M Powell
5th International Symposium on Frontiers in Offshore Geotechnics (ISFOG2025)
2 - Site characterization, in-situ and laboratory testing, measurement
https://doi.org/10.53243/ISFOG2025-317
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