EXPERIMENTAL-STUDY ON REPETITIVE CYCLIC L ATERAL LOADING OF SINGLE PILES IN SAND USING A CENTRIFUGE TEST

This paper presents the results of repetitive cyclic lateral loading t est carried out in a centrifuge on two reduced models of single piles instrumented with strain gauges. The pile models, their instrumentatio n, the experimental setup, and the construction of the soil model are described. Effects of the pile surface roughness and of sand density o n the pile behaviour are studied. The latest part of this paper deals with the construction of P-Y lateral reaction curves and the variation of the horizontal subgrade modulus with the number of cycles.