Abstract
This paper presents lateral dynamic response of a pipe pile in saturated soil layer considering the second-order effect of axial loads. The horizontal vibrations of saturated soil layers are simulated by Biot's poroelastic theory. Based on the assumption of perfect contacts between the pipe pile and the saturated soil layers, the dynamic responses of the pipe pile are deduced, which yields the analytical forms of pile displacements, internal forces and complex impedances. Comparison with an existing solution is performed to validate the method proposed in this study. Numerical studies are carried out to clarify the influence of the second-order effect of axial loads and the permeability coefficient on horizontal dynamic responses of the pipe pile.
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