Numerical modeling of connected piled raft foundation under seismic loading in layered soils

Abstract Until recently, the behavior of connected piled raft foundation was not fully understood in seismically active region due to complex dynamic soil–pile–foundation structure interaction. This concern arises when soil deposit-supported foundations are stratified or heterogynous and subjected high ground motion intensity. In current study, a series numerical analyses using ABAQUS software have been conducted on pile group (3 × 3) arranged into square pattern investigate seismic response embedded dry sandy (homogenous layered), how amplification propagated waves affects bending moment along piles. For mesh generation, an artificial boundary condition tied-nodes approach adopted simulate free-field under earthquake excitation. The used single degree freedom with lumped mass. Moreover, Mohr–Coulomb linear elastic models chosen for pile–raft, respectively. results demonstrate that rocking increases compared homogenous soil, irrespective maximum observed at head shallow depths layered because kinematic interaction interface. also indicated factor (acceleration certain depth acceleration bedrock) found be 203 189% PGA values 0.1 0.33 g , Almost there were no effects intensity amplified transmitted surface.