Effects of pore water pressure on the seismic response of soils : 1D/3 components modeling
type: Dataset
description: During strong earthquakes, the seismic wave propagation in soils involves nonlinear behaviors strongly depending on the strain level. Indeed, for small strain (typically <10^{-6}), a linear constitutive law (modulus and damping independent on the load level) can reproduce the experimental observations on site. However, for larger strains, a nonlinear hysteretic constitutive law is needed to describe the evolution of stiffness and energy dissipation during seismic loading. In addition, as strong earthquakes are characterized by larger amplitudes and durations, the role of pore pressure cannot be neglected for saturated soils. Indeed pore water pressure controls phenomena such as cyclic mobility and liquefaction due to the loss of soil strength. This can lead to a fast decrease of effective stresses and permanent deformations in the soil causing severe damage to structures. This work extends the applicability of existing calculation models for a more detailed analysis of seismic risk. Starting from a FEM approach describing the propagation of seismic waves in the vertical direction, taking into account 3D loading (so-called "1D-3C" approach: 1 direction - 3 components) in nonlinear dry soils, new strategies to consider the role of water are developed. The model is based on the relationship between the pore pressure and the shear work. The three-dimensional stress state of the material is considered. The model is validated by comparison with experimental results. The "1D-3C" approach was used to model the response of soils for four real earthquakes: the Superstition Hills earthquake in 1987 in the United States (M_{w}=6.7), the Tohoku earthquake in 2011 in Japan (M_{w}=9.1), the Kushiro earthquake in Japan in 1993 (M_{w}=7.8) and the Emilia Romagna earthquake in Italy in 2012 (M_{w}=5.9). For the first three earthquakes, records at depth and on the surface are available. The study of the first three cases makes possible the validation of the model by comparing the calc…
identifier: NNT: 2013PEST1184
issued: 2026-05-05T12:36:10.546793
language: fr
modified: 2026-05-05T12:36:10.546800
contact point: Organization
  fn: CCSD
keyword: boundary-condition
keyword: cyclic-mobility
keyword: effets-de-site
keyword: elements-finis
keyword: finite-elements
keyword: infoeu-reposemanticsdoctoralthesis
keyword: liquefaction
keyword: mobilite-cyclique
keyword: nonlinear-soil
keyword: pression-interstitielle
keyword: sol-non-lineaire
keyword: spiotherengineering-sciences-physicsother
keyword: strong-motion
keyword: theses
landing page: https://theses.hal.science/tel-00985465

Effects of pore water pressure on the seismic response of soils : 1D/3 components modeling
type: Distribution
format: HTML
issued: 2026-05-05T12:36:10.548558
modified: 2026-05-05T12:36:10.529294
access URL: https://theses.hal.science/tel-00985465

test_moissonnage_selune
type: Agent