Improvement of cyclic liquefaction resistance induced by partial saturation: An interpretation using wave-based approaches

• DOI: 10.1016/j.soildyn.2023.107819
• Publication Date: 2023-02-09T11:24:37Z
• Authors: Fausto Molina-Gómez; António Viana da ...; Cristiana Ferreira; Bernardo Caicedo
• Keywords: Saturation (graph theory)

Methods to estimate the liquefaction resistance in sandy soils have been proposed literature, involving correlations between cyclic ratio and seismic wave velocities measured by situ laboratory tests. However, applicability of these has not validated sands improved with induction partial saturation. This study addresses assessment improvement induced saturation using wave-based approaches. For this purpose, an experimental plan comprising triaxial bender elements was carried out a Portuguese natural sand. The studied soil is TP-Lisbon sand, historically liquefiable collected 'Terreiro do Paço' site — next Tagus River centre Lisbon. Notwithstanding, results presented herein are compared against other from Japan. controlled P-wave velocity measurements, which were contrasted theoretical predictions performed light Biot's theory. confirmed increase inducing Experimental revealed that provides reliable prediction partially saturated conditions rather than S-wave velocity. suitableness approaches attributed presence occluded air bubbles soils, can be detected S-wave.