Numerical Analysis on Effects of Soil Improvement on Pile Forces on Existing High-Rise Building

Nowadays, seismic codes are regularly updated with new knowledge and a better understanding of the earthquake phenomenon. With these updates, existing buildings require reevaluation their stability process reinforcement and/or retrofitting. This study investigated effects two types ground improvement which use cement-mixing soil surrounding foundation structure to reduce redistribute forces acting on piles. is especially important when high-rise leads increased in Typically, designed while assuming fixed base boundary conditions at level, without considering soil–pile–structure interaction (SPSI). SPSI significantly influences response supported by soft soil. Increasing lateral resistance can influence SPSI. In this study, detailed dynamic numerical analysis was used investigate an system building under load. A conducted modified layout real building, using real-time motion. The finite element program DIANA FEA perform nonlinear 3D FEM simulations, taking into account essential phenomena, gap-slip between piles soil, free-field conditions. comparison data suggests that bending moment shear reduced magnitude evenly distributed along upper part pile, reduces stress concentration contact pile cap.