Abstract

Based on Biot's poroelastic theory, the isolation effectiveness of incident elastic waves by using a row of piles as an isolation barrier is investigated, taking into account the coupling of soil particles and pore water of the soil medium. Utilizing Fourier-Bessel series expansion, the problem is solved according to Graff's addition theorem and the application of suitable boundary conditions. Then linear systems of algebraic equations are obtained, which are subsequently solved by truncating the systems with an appropriate range for the expansions. The influence of certain pile and soil characteristics, such as the permeability of poroelastic soil, spacing between piles, and number of piles, on the isolation performance of a pile barrier is investigated.

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