Wave-induced dynamic response of saturated multi-layer porous media: Analytical solutions and validity regions of various formulations in non-dimensional parametric space

Ulker M. B. C.

SOIL DYNAMICS AND EARTHQUAKE ENGINEERING, vol.66, pp.352-367, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 66
  • Publication Date: 2014
  • Doi Number: 10.1016/j.soildyn.2014.08.005
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.352-367
  • Keywords: Dynamic response, Coupled flow and deformation, Saturated porous media, Semi-analytical solution, Regions of formulations, INDUCED SEABED RESPONSE, TRANSIENT-RESPONSE, EFFECTIVE STRESSES, PORE PRESSURE, CONSOLIDATION, SOIL, LIQUEFACTION, BEHAVIOR, NONLINEARITY, DOMAIN
  • Istanbul Technical University Affiliated: Yes


In this paper, dynamic response of saturated-layered porous media under harmonic waves is evaluated through a semi-analytical solution. The coupled differential equations governing the dynamics of saturated or nearly saturated porous media such as soils containing all the inertial terms of solid and fluid phases are presented for a multi-layer system. Possible simplifications of the equations which are called formulations are introduced based upon the presence of inertial terms associated with the phases. The semi-analytical solutions to the response of multiple layers for all the formulations are presented in terms of pore water pressure and stress variations considering a set of non-dimensional parameters and their respective ratios. Validity of the formulations is presented in a non-dimensional parametric space. The maximum discrepancies in the pore pressure response of the formulations leading to validity regions are illustrated for typical dynamic problems. Subsequently, the effects of layering and drainage conditions on these regions are also presented. The proposed semi-analytical solution may be served as a benchmark one for validating the coupled numerical solutions, which can be used to deal with real scientific and geo-engineering problems in the emerging field of computational geomechanics. (C) 2014 Elsevier Ltd. All rights reserved.