ABSTRACT
Centrifuge modelling may be an efficient tool to provide experimental data that are needed in the validation processes of design codes. The paper presents the results of two centrifuge research programmes. The first one deals with bearing capacity of shallow footings subjected to inclined and eccentric loads and sometimes installed in or near slopes. The reduction coefficients are for load inclination, i e for load eccentricity and i β for proximity of a slope. In most codes of practice, it is proposed to combine these three coefficients in the following formula : ieδβ = ie × iδ × iβ. The validity of this principle has been investigated by centrifuge model tests. The second programme focuses on the group effects in horizontally loaded piles. Different techniques are used throughout the world to determine the P-y curves for a single pile from laboratory or in situ tests results. The paper gives the main results obtained on group effects on load-deflection curves, bending moment and P-y curves.
