Seismic Pile-Group—Structure Interaction

Abstract

A detailed multi-step procedure is outlined for a complete seismic soil-pile-foundation-structure interaction analysis, within the format of kinematic-inertial decomposition. Newly-developed simplified methods of solution are presented to determine kinematic seismic displacements and bending moments, as well as dynamic impedances, of single piles and pile groups. Characteristic results from the intermediate steps of the analysis are presented, elucidating aspects of the mechanics of soil-pile interaction. Results of unexpected behavior are also displayed and discussed. Extensive comparisons of the developed simplified methods with the extended-Tajimi method reveal a good agreement.