1. Key words: cone tip resistance, numerical modeling, sand, calibration chamber, Mohr-Coulomb, in situ horizontal stress.

2. 6 In the example horizontal stress unbalance has been simulated by setting, half way between and.

3. The results show that vertical stress is equal to overburden stress at shallow level. Maximum principal stress is sub horizontal stress in the NE direction.

4. Differences between synthetic and reference profile are interpreted in terms of a semiquantitative estimate of the relative impact of the horizontal stress component on gravitational compaction in accretionary wedge environments.

5. Barrettes provide resistance to horizontal stress and to bending moments better than circular piles of the same section, so that one single pile is sufficient under each column or bearing element