Gx. Wu et Wdl. Finn, DYNAMIC ELASTIC ANALYSIS OF PILE FOUNDATIONS USING FINITE-ELEMENT METHOD IN THE FREQUENCY-DOMAIN, Canadian geotechnical journal, 34(1), 1997, pp. 34-43
A quasi-three-dimensional finite element method of analysis is propose
d for the dynamic response analysis of pile foundations that is comput
ationally feasible for practical applications. The method uses a simpl
ified three-dimensional wave equation for describing the dynamic respo
nse of the soil. The response of the pile foundation is computed direc
tly without having to use pile-soil-pile interaction factors. The quas
i-three-dimensional solution greatly reduces the computational time fo
r the direct analysis of pile groups. The method is presented here for
an elastic response so that it can be validated against existing more
exact elastic solutions and low-amplitude field vibration tests. The
method is extended to nonlinear dynamic response analysis in an accomp
anying paper.