Scattering of vertically-incident P-waves by an embedded pile |
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| Authors: | Feng Ji Ronald YS Pak |
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| Institution: | Department of Civil, Environmental and Architectural Engineering, University of Colorado, Boulder, CO 80309-0428, USA |
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| Abstract: | An exact theoretical formulation is presented for the analysis of a thin-walled pile embedded in an elastic half-space under vertically-incident P-wave excitation. In the framework of three-dimensional elastodynamics and a shell theory, the axisymmetrical wave-scattering problem is shown to be reducible to a set of Fredholm boundary integral equations. With the incorporation of the singular characteristics of the wave-induced contact load distributions into the solution scheme, a computational boundary element method is developed for a rigorous treatment of the seismic soil-structure interaction problem. Typical results for the dynamic contact load distributions, displacements, complex-valued foundation input motion functions, and resonant pile foundation response are included for direct engineering applications. |
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| Keywords: | soil-structure interaction scattering input-motion function pile foundation load-transfer foundation dynamics seismic loading boundary element mixed boundary value problem singularity |
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