Abstract
In order to obtain effect of relative density Dr, pile diameter D and depth z on p-y curves of single pile in sandy ground, a series of divided pile loading tests and single pile loading tests were conducted in geotechnical centrifuge. Relative density Dr, centrifuge acceleration ratio n and model pile diameter D were selected as test parameters. It was found that obtained p-y curves from divided pile loading test could be modeled by hyperbolic p-y curves and single pile loading tests result could be reasonably simulated by the hyperbolic model. The applicability of bi-linear p-y curve were investigated by comparing with test results. Finally, method of evaluation on the coefficient of subgrade reaction khi and and ultimate subgrade reaction pmax were proposed.
