The variation of permeability throughout the liquefaction and post liquefaction phase was more tackled by exhaustive empirical methods to produce numerical models. However, no thorough studies took into consideration the transformation of the physical soil properties and the impact of the significant parameters in the post-seismic phase. more Many efforts have been invested in the establishment of pore pressure models and evaluation of the influence factors in the seismic behavior of a saturated soil. Many efforts have been invested in the establishment of pore pressure models and evaluation of th.
This study demonstrate the effectiveness of the P-RAT technique. This paper presents a brief description of the P-RAT technique as well as the results of 3D numerical simulations conducted using the computer code, COMSOL in order to study the interaction between the P-RAT components and the tested sample (soil or solid). A new technique, piezoelectric ring-actuator technique (P-RAT) has been developed in the geotechnical laboratory at the Université de Sherbrooke to minimize/eliminate the difficulties associated with other techniques, in particular, the penetrating of the used sensors into the tested specimens that may be inescapable in BE technique.
These techniques, however, are associated with several difficulties including the mixed radiation of both primary and shear waves, near-field effects, boundary effects, and uncertain detection of first arrivals. more Shear wave velocity of soil is commonly measured in the laboratory using piezoelectric elements such the bender elements (BE). Shear wave velocity of soil is commonly measured in the laboratory using piezoelectric elements s.
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