Alkateeb, DiaaDiaaAlkateebGrabe, JürgenJürgenGrabe2026-01-212026-01-212025-0610th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2025https://hdl.handle.net/11420/61033Simulating the installation effects of piles in numerical finite element models is often neglected due to the complexities of modeling large soil displacements under dynamic loads. This study presents a novel combined modelling approach that integrates two distinct numerical techniques: the zipper method for vibratory driving and the Coupled Eulerian-Lagrangian (CEL) approach for impact driving. This comprehensive simulation captures the complete installation process of a king pile (I-profile). Three-dimensional finite element models in Abaqus are employed to simulate the initial vibratory phase, followed by a seamless transfer of stress states and solution-dependent variables to the CEL model with nearly similar geometry for impact driving simulation. The numerical results reveal significant installation-induced changes in soil state, including void ratio distribution and effective stress patterns, consistent with existing literature. Subsequent static load tests indicate that considering both vibratory and impact driving phases results in notably different predictions of axial capacity. Specifically, simulations that include the vibratory phase show a 14% increase in skin friction and a 13% increase in compressive resistance compared to those that neglect it. This study proposes a promising numerical framework for modeling complex pile installation processes and their effects on soil-structure interaction. The findings provide valuable insights for designing efficient pile foundation systems.ennumerical analysisCELzipper methodpile installationpile-soil interactionTechnology::690: Building, ConstructionConference Paper10.7712/120125.12820.24563Conference Paper