Consolidation behavior of two-pile group system under different loading condition using the bounding surface model

Abstract EN

In this paper, soil-water coupling analyses with finite element method are conducted to investigate the long-term displacements of two-pile foundation installed in saturated cohesive soils under different loading condition.

As constitutive model for clayey soil, elasto-plastic bounding surface model is considered, which a sophisticated elasto-plastic model is for normally and over consolidated soils.

The influence of loading intensity and consolidation process are considered carefully.

The analyses showed that the elasto-plastic bounding surface model may provide a realistic stress distribution within the soil mass around the piles.

Also as conclusion of a series of analyses, the followings are clarified ; 1) the long-term behavior of two-pile group system ; 2) the mechanism of how the space between piles affects the long-term displacements.