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Communication Dans Un Congrès Année : 2018

Laterally loaded pile in unsaturated soils: a numerical study

Résumé

The influence of partial saturation on laterally loaded piles response has been studied perform-ing three-dimensional simulation using a finite element code. The analysis simulated a single vertical floating pile embedded in a normally consolidated silty clay, subjected to a static horizontal force applied at pile head. The study aims at exploring the influence of the relative position of water table with respect to the pile length. The hydro-mechanical propriety of soil is kept constant. The constitutive model adopted to simulate the soil stress-strain response is an extension of modified Cam-Clay model that considers the evolution of the yielding surface due to variation of saturation degree. The model is formulated in terms of modified Bishop effective stress, which allows switching continuously from saturated conditions to unsaturated conditions and vice ver-sa. The modified formulation of the hardening parameter allows to correctly reproduce the volumetric behav-iour observed in wetting and drying path.
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Dates et versions

hal-02192787 , version 1 (24-07-2019)

Identifiants

  • HAL Id : hal-02192787 , version 1

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Leonardo Lalicata, Augusto Desideri, Francesca Casini, Luc Thorel. Laterally loaded pile in unsaturated soils: a numerical study. 7th International Conference on Unsaturated Soils 2018, Aug 2018, HONG-KONG, China. 6p. ⟨hal-02192787⟩
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