A multilateral analysis of slope failure due to liquefaction-induced lateral deformation using shaking table tests

Abstract

Liquefaction-induced lateral displacement can cause substantial deformations and trigger failure in the saturated sandy slopes. This study elaborates on the results of a shaking table experiment performed on a saturated sandy slope model. A transparent Plexiglass container was used to allow visualization of the time-dependent ground displacements at different grid points. Using colored sand grid along with the video-tracking analysis technique provided an excellent opportunity for instant monitoring of the model deformation in both the time and space domains. Furthermore, the pore pressure buildup and dissipation in the soil medium and acceleration time histories of the model were recorded and analyzed. Detailed and comprehensive analyses of the high-resolution recorded data streams resulted in the determination of the onset of liquefaction and the induced subsidence, acceleration response, deformation behavior, and shear strain progress through time and depth at different slope sections. It was also found that the shear strain rate was different in the on-slope and free field locations, and its value was proportional to the liquefaction duration. It was also observed that the variation of the shear strain rate at different depths in the free field led to a localized sliding event.

Impact of Rock Content and Distribution on the Stability of Soil-Rock Mixture Embankments: Insights from Static Load Experiments

“…Traditional experimental setups often fail to replicate real-world conditions, resulting in discrepancies between experimental results and eld observations 26 . Advanced numerical methods like the discrete element method (DEM) and generalized interpolation material point method (GIMP) have improved understanding but still face issues in capturing particle interactions and the effect of particle shape on mechanical properties [27][28][29] . Given these challenges, there is an urgent need for improved modeling techniques that accurately re ect the strain softening phenomena observed in SRMs.…”

Material Preparation and Geotechnical Properties of Transparent Cemented Soil for Physical Modeling

“…The three types of transparent sand have no, or little, cohesion (≤1 kPa). Such transparent sand is mainly used in physical modeling tests, such as tests on deformation of soil mass around driven piles and uplift-resistant piles (Yuan et al, 2019;Zhou et al, 2019;Chen et al, 2020), stability of tunneling (Ahmed and Iskander, 2011a;Ahmed and Iskander, 2011b;Zhang et al, 2018), soil-geosynthetic interactions (Bathurst and Ezzein, 2015), deformation of simplified slopes under effects of water (Sui and Zheng, 2018;Maghsoudi et al, 2020) and pore flow characteristics of porous media (Serrano et al, 2011;Liang et al, 2019;Wu et al, 2020b).…”