Bearing capacity of a foundation resting on a soil improved by a group of columns

M. Bouassida , P. de Buhan (1) , L. Dormieux (1)

1 LMS - Laboratoire de mécanique des solides

A new design method for a foundation on a soil reinforced by columns is described. A lower bound of the bearing capacity is determined within the framework of the yield design theory. It takes into account the three-dimensional nature of the problem and is applicable to a wide range of geometries. A parametric study on the improvement of the bearing capacity as a function of the proportion of reinforcement, and on the strength characteristics, is presented. A complete analytical solution is given for the strength of a composite cell subjected to a triaxial loading, which provides an insight into the reinforcement mechanism.

Mots clés: foundations; design; failure; bearing capacity; footings; ground improvement; reinforced soils

Domaines: Génie civil

M. Bouassida, P. de Buhan, L. Dormieux. Bearing capacity of a foundation resting on a soil improved by a group of columns. Geotechnique, 1996, 46, pp.570-572. ⟨10.1680/geot.1995.45.1.25⟩. ⟨hal-00111511⟩