Abstract
The conventional dynamic tests of composite foundation are reviewed and the velocity or mechanical admittance method for a block on the single-piled composite foundation is then recommended in this paper. The formulation for the mechanical admittance of block-pile-soil system is established by using the axisymmertic coupled finite-infinite element method. Dynamic response of a block on single-piled composite foundation is analyzed with the model. The influences of the pile length, pile diameter, pile defects, and pile-soil stiffness ratio are subsequently studied. The sensitivity analysis for the shear wave velocity of soil, pile length, and pile defects are also presented. The study will be of guide significance on further research of the proposed mechanical admittance method as well as on design optimization for dynamic machines with composite foundations.
Published Version
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