Investigating the effect of pile configuration and length on thekinematic seismic interaction of pile groups in Clay

A wide range of vital structures is constructed on pile groups. Post-earthquake studies demonstrated that seismic loads cause devastating damage to piles when these structures are located in earthquake-prone areas. Seismic lateral loads influencing piles can be categorized into kinematic interactions between the soil and piles, as well as inertial interactions between the superstructure and soil-pile systems. This investigation will focus on the kinematic seismic response of pile groups. This study developed a series of three-dimensional models of floating pile groups embedded in a clayey stratum using the explicit scheme finite difference program, FLAC3D. Moreover, the simulation assumed a variation in soil stiffness and strength with depth for increased accuracy. Furthermore, the study takes into account the nonlinear behaviour of soil under seismic loading in the clayey-soil medium. The harmonic sinusoidal excitation was imposed at the base of the model. The effect of pile length and pile group configuration on the kinematic interaction occurring in the soil-pile system was investigated. The results showed that both of the mentioned parameters have a substantial effect on the trend of bending moment variation along the pile length

Investigating the effect of pile configuration and length on thekinematic seismic interaction of pile groups in Clay Keywords:

Nonlinear 3D modelling , Clayey soil , Seismic soil-pile group interaction , Pile configuration and length , Kinematic bending moment.