DYNAMIC SOIL-PILE-FOUNDATION-STRUCTURE INTERACTION - RECORDS AND PREDICTIONS

The problem of soil-pile-foundation-super-structure interaction is exa mined, and a simple rational procedure to analyse the response of a st ructure supported on pile groups is presented, This procedure combines theories for the computation of the dynamic impedances and kinematic- seismic response factors of pile foundations with a multi-degree-of-fr eedom structural model, The procedure is applied to compute the respon se of a bridge in Rio DelI, California, which was shaken by the M(s) = 7.0 Petrolia earthquake in 1992. The predicted response agrees well w ith recorded data. The significance of considering the frequency-depen dence of the pile foundation impedances in the analysis of the respons e of the superstructure is discussed.