The Behavior of Pile Foundation in Liquefiable and non-Liquefiable Soil Layers Considering Soil-Pile-Structure Interaction

Abstract Liquefaction has emerged as a primary cause of damage to civil engineering structures in seismically active places. Deep foundation damage from liquefaction can be quite damaging. The seismic behavior of pile foundations immersed in the earth under seismic loads is presented in this work. Bending moments, shear forces, and lateral displacements along the pile’s depth before and after liquefaction have been compared. The soil, pile, and structure interaction was analyzed using SAP2000 finite element (FE) software. The inertial load from superstructure vibrations on piles embedded in the soil layer was calculated using three-dimensional (3D) finite element (FE) modeling. The study examined the effects of multiple factors on the pile response, including the seismic parameters and soil conditions around the pile. According to the research findings, in proportion to the increase in seismic parameters and the transition from non-liquefaction to liquefaction of the surrounding soil, piles experience an increase in internal forces.