3D failure envelope of a single pile in sand

Zheng Li (1, 2) , Panagiotis Kotronis (2) , Sandra Escoffier (1)

1 IFSTTAR/GERS/SV - Séismes et Vibrations
2 GeM - Institut de Recherche en Génie Civil et Mécanique

Pile foundations are widely used in geotechnical and offshore engineering. When subjected to a combination of horizontal, vertical forces and bending moments, a 3D failure envelope is necessary in order to evaluate the safety of the pile-soil system. We present a study on the failure envelope of a single elastic pile in sand. In order to find it in the three-dimensional space (i.e. horizontal force H, bending moment M and vertical force V), the radial displacement method and swipe tests are numerically performed. An analytical equation providing good agreement with the 3D numerical results is finally proposed.

Domaines: Génie civil; Matériaux; Mécanique [physics.med-ph]

Zheng Li, Panagiotis Kotronis, Sandra Escoffier. 3D failure envelope of a single pile in sand. COMPDYN 2015, 5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, May 2015, Crete Island, Greece. pp.2752-2760. ⟨hal-01235181⟩