Lateral displacement and internal force of single pile induced by far-field earthquake

In the far field earthquake, the energy of the Rayleigh Waves is dominante. In this paper, firstly the analytical solution of dispersion curve of Rayleigh Wave in layered soils was presented. Then, the equation of lateral dynamic response of single pile with a mass on its top in layered soils induced by Rayleigh waves was deduced based on the Winkler beam model. Finally, several numerical examples are discussed. The effects of maxium acceleration,predominant period of ground surface motion and mass of superstructure on the lateral displacement and internal force of the pile were shown. The conclusions of this paper may be meaningful to the anti seismic design of piles.