Dynamic response and load distribution of pile groups in layered liquefiable ground

Abstract

Three dimensional finite element simulation of 3×5 pile groups in layered liquefiable ground during earthquake was carried out in this paper to investigate the dynamic load distribution within the pile groups. A unified plasticity model for large post-liquefaction shear deformation of sand was used for the appropriate simulation of soil liquefaction. Load distribution over the corner, edge and central piles was studied. The influence of pile spacing on the load distribution was also studied. Numerical results showed the corner piles, the edge piles and the central piles were subjected to varying dynamic loads. The pile spacing had significant impacts on the load distribution of pile groups.