Seismic response of an embedded pile in a transversely isotropic half-space under incident P-wave excitations |
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| Authors: | M Shahmohamadi A Khojasteh M Rahimian RYS Pak |
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| Institution: | 1. Department of Civil Engineering, University of Tehran, P.O. Box 11155-4563, Tehran, Iran;2. Department of Civil, Environmental and Architectural Engineering, University of Colorado, Boulder, CO 80309-0428, USA |
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| Abstract: | A rigorous mathematical formulation is presented for the analysis of a thin cylindrical shell embedded in a transversely isotropic half-space under vertically incident P-wave excitation. By virtue of a set of ring-loads Green's functions for the shell and a group of dynamic fundamental solutions for the half-space under arbitrary interfacial dynamic loads, the problem is shown to be reducible to a pair of Fredholm integral equations. By utilizing an adaptive-gradient family capable of capturing regular-to-singular solution transitions smoothly, an accurate numerical procedure is developed. To assess the effect of material anisotropy on the dynamic load-transfer process, a set of comprehensive numerical results presented for various material and geometrical conditions. The accuracy of the proposed numerical scheme is confirmed by its comparison with a benchmark solution for the corresponding isotropic problem. |
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