Numerical Simulation of Piles in a Liquefied Slope Using a Modified Soil–Pile Interface Model

The liquefaction of soil surrounding a pile significantly affects the dynamic interaction between and pile. In particular, sloping ground can induce permanent deformation bending moment on due to lateral displacement liquefied in downslope direction. However, numerical analysis studies piles installed liquefiable slope have been very limited not properly simulated behavior Therefore, modified soil–pile interface model was proposed, which linearly decreases friction angle with increase excess pore pressure ratio. proposed validated by comparing it centrifuge test results Yoo et al. (2023). Simulation crest settlement pile-bending showed good agreement results. A parametric study conducted applying analyze effect inclinations amplitude input motions moment. simulation that affected area sliding mass, causing larger inclination. When motion sufficiently large trigger failure slope, did any further.