PUBLISHED PAPERS #01.03
| Muhammad Matanov. Soil Structure Interaction Problems: Impedance of Piled Foundations in Saturated Soils |
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| Abstract. This article examines the dynamic impedance of single piles and pile groups in water-saturated soils using a 3D boundary element method (BEM) based on Biot’s two-phase poroelastic theory. Unlike prior studies treating soils as elastic or viscoelastic, this approach models them as fluid-saturated, poroelastic materials and piles as elastic or viscoelastic solids, enabling detailed pile-soil interaction analysis. Validation is achieved through literature comparisons. Results reveal the effects of excitation frequency, soil permeability, and pile flexibility. Key findings highlight soil permeability's impact on horizontal impedance and wave propagation, along with increased foundation stiffness in saturated soils at low frequencies. The study exposes single-phase model limitations and demonstrates the proposed method’s versatility for complex foundation analysis. |
| Keywords: Dynamic impedance, boundary element method (BEM), poroelastic soils, pile foundations, soil-structure interaction, Biot's theory, saturated soils, pile-soil interaction, wave propagation, foundation stiffness |
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| DOI: https://doi.org/10.30546/MaCoSEP2025.073 |